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844 Keysight N9938-90006 User’s Guide

Safety Considerations
Environmental Requirements

Environmental Requirements

Refer to the FieldFox Specifications in

Appendix B:, “Specifications/Data

Sheet,” on page 857

.

Electrical Requirements

The FieldFox allows you to use either the lithium-ion battery or the AC/DC
adapter - both are included.

Electrostatic Discharge (ESD) Precautions

The FieldFox was constructed in an ESD protected environment. This is

because most of the semiconductor devices used in this instrument are

susceptible to damage by static discharge.
Static charges are generated in numerous ways, such as simple contact,

separation of materials, and normal motions of persons working with the

FieldFox. To prevent instrument damage, practice industry accepted

techniques for handling static sensitive devices when using the FieldFox.
Very often, coaxial cables and antennas also build up a static charge, which, if

allowed to discharge by connecting to the FieldFox, may damage the

instrument input circuitry. To avoid such damage, it is recommended to

dissipate any static charges by temporarily attaching a short to the cable or
antenna prior to attaching to the instrument.

FieldFox Markings

The table below lists the definitions of markings that may be on or with the

product. Familiarize yourself with each marking and its meaning before
operating the instrument.

All labels and symbols may not apply to the instrument.

This symbol marks the standby position of the power line switch.

This symbol marks the ON position of the power line switch.

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Summary of Contents for N9913B

Page 1: ...914B N9915B N9916B N9917B N9918B N9933B N9934B N9935B N9936B N9937B N9938B N9950B N9951B N9952B N9953B N9960B N9961B N9962B N9963B This is the unabridged version of the abridged N9938 90003 User s Guide that is available in printed format The abridged User s Guide can be found here https www keysight com us en assets 9018 04841 usermanuals 9018 04841 pdf ...

Page 2: ...andard commercial license which is embodied in its End User License Agreement EULA a copy of which can be found at http www keysight com find sweu la The license set forth in the EULA represents the exclusive authority by which the U S government may use modify distribute or disclose the Software The EULA and the license set forth therein does not require or permit among other things that Keysight...

Page 3: ...receive the latest updates by email subscribe to Keysight Email Updates at the following URL http www keysight com find MyKeysight Information on preventing instrument damage can be found at https www keysight com find PreventingInstrumentRepair Is your product software up to date Periodically Keysight releases software updates to fix known defects and incorporate product enhancements To search fo...

Page 4: ... to https www keysight com us en products software html Electromagnetic Field Measurements EMF Option 358 Added Manual EMF measurements with corrections feature Noise Figure mode Noise Figure measurement Added Smart Noise Source feature OTA mode 5G NR EVM Added Constellation Diagram Added Frame Summary for Constellation Diagram Added IQ data demodulation setting Added Auto Range feature General Im...

Page 5: ...sation refer to the Keysight product by its model number and full serial number With this information the Keysight representative can determine whether your product is still within its warranty period To contact Keysight for sales and technical support refer to support links on the following Keysight websites http www keysight com find support product specific information and support software and ...

Page 6: ...6 ...

Page 7: ...2 FieldFox High Temperature Protection 32 How to monitor the internal FieldFox temperature 32 Temperature Control Mode 33 High Temp Shutdown Warning RTSA Mode Only 35 Avoid Overpowering the FieldFox 36 Take the FieldFox Tour 38 Front Panel 38 Top Panel 41 Right Side Panel 42 Left Side Panel 43 Screen Tour 44 How to Enter Numeric Values 46 Multiplier Abbreviations 46 Connector Care 47 3 CAT Cable a...

Page 8: ...ment Format 66 DTF Start and Stop Distance 67 Frequency Mode 67 Coupled Frequency 68 Cable Correction Specifications 69 Window Settings 72 DTF Units 73 Calculated DTF values 73 About Alias Faults 73 5 TDR Time Domain Reflectometry Option 215 TDR Measurement Settings 78 TDR Measurement Format 78 TDR Settings Table 78 TDR Start and Stop Distance 79 TDR Sweep 79 Frequency Mode 80 Cable Correction Spe...

Page 9: ...oints 104 Sweep Time 104 Triggering NA 105 Output Power 107 System Impedance Z0 108 Port Extensions 108 Velocity Factor 109 Big Marker Display States A and B 110 Increase Dynamic Range 112 7 Time Domain Option 010 Overview 115 Time Domain Transform Settings 116 Transform Settings Table 116 Start Stop Frequency Range and Points 116 Stimulus Mode 117 Set Frequency Lowpass 117 Start Stop Time 117 Dis...

Page 10: ...41 Interpolation 142 Cal ON Questionable Accuracy 142 Compatible Mode Calibrations 142 Save the Calibration 143 CalReady Properties 143 Apply Nearest NA Mode Only 144 Verifying Calibration and Jumper Cable Integrity 144 Verify a Calibration 144 Test the Jumper Cable 145 Calibration Method Summary 146 9 SA Spectrum Analyzer Mode Option 233 Mixed Analyzers SA Mode Settings 151 How to select SA Mode ...

Page 11: ...Single Continuous Restart 201 Points 201 Trace Display States SA Mode 201 Average Type 202 Average Count 203 Alignments 204 Detection Method 211 Display Line 212 Noise Marker 213 Band Interval Power Marker 214 Frequency Counter at Marker 215 Time Zero Fixed Marker 215 Audio Beep at Marker Power 216 Meas UNCAL Error 216 Old Data Indicator 217 Channel Measurements 217 Radio Standards and Channel Mea...

Page 12: ...Units 258 External Gain 258 Attenuation Control 259 Preamplifier Control Opt 235 260 Check for Compressed Measurements 260 Spectrum Selection 261 Setting the IF Path 265 Resolution Bandwidth Res BW 265 Triggering 266 Single Continuous Restart Time Per Div 269 Acq Time 270 Points not user settable 270 Trace Display States RTSA 271 Detection Method 272 Average Count Show Density Blue and Red Percent...

Page 13: ...n Marker Waveform Only 311 Coupled Markers Waveform Only 311 Continuous Peak Search Marker 313 Alignments 314 Trace Display States IQA Mode 314 How to display the Trace States 314 Other Features Available 316 12 Electromagnetic Interference EMI Measurements Option 361 Using EMI Measurements Option 361 321 EMI Measurements Mode Settings 322 How to select EMI Measurements Mode 322 Frequency Range 32...

Page 14: ...s P O Option 378 358 How to Set Up Over the Air OTA Mode Settings 359 OTA Setup Procedure 359 Optional Using RTSA to verify the signal quality Requires Option 350 and Preamp Option 235 377 How to Define a Cell or Cell s and Use OTA 378 How to Set Up EMF Mode Settings Requires EMF Option 358 and 5G NR Option 378 394 EMF Features 394 EMF Setup Procedure 397 How to Use Data Logging OTA Options 370 37...

Page 15: ...61 Other Features Available 465 Troubleshooting 466 16 Indoor and Outdoor Mapping Option 352 Requires Spectrum Analyzer Mode Option 233 and GPS Receiver Option 307 How to Install Node js and Running the FieldFox Mapping Software 472 Downloading and Using the FieldFox Map Support Tool 474 Importing a zip File to the FieldFox 479 How to Set Up Mapping Settings 482 How to Set Up Mapping When the Fiel...

Page 16: ...530 Spectrogram Display SA Option 530 Common Settings for Waterfall and Spectrogram 532 Waterfall Display 533 Record Playback SA Option 535 About Sessions 535 FieldFox Setting Changes during Record and Playback 536 About State and User Tags 537 How to Record a Session 538 How to Playback a Session 539 Recording Configuration 539 Frequency Mask Trigger Configuration SA Mode Only 541 Record Source 5...

Page 17: ...aging 568 Single or Continuous Measure 568 Step Detection Mode 569 Limits 569 Troubleshooting 570 LAN Sensors 570 23 Frequency Offset Using Power Sensor FOPS Option 208 Overview 575 FOPS Settings 577 How to select Power Meter USB Sensor 577 Measurement Selection 577 Sweep Type and Frequency 578 Power Sensor Settling 580 Sweep Settings 580 Amplitude Markers 581 Trace Math 581 24 Pulse Measurements ...

Page 18: ...M Mode Settings 604 How to select VVM Mode 604 Measurement Selection 604 Frequency Selection 604 Display Resolution 604 IF Bandwidth 605 Output Power 605 Averaging 606 Single or Continuous Measure 607 VVM Calibration 607 Zeroing 607 1 Port Cable Trimming Measurements 609 How to make a 1 Port Cable Trimming Measurement 609 2 Port Transmission Measurements 611 How to make a 2 Port Transmission Measu...

Page 19: ...Channel Scanner 638 How to Set Up Channel Scanner 639 How to Define a Channel and Use Channel Scanner 642 Field Strength Measurements 656 Using the Antenna Cable Editor 662 Using Mapping 662 Using Resolution Bandwidth Tradeoff Res BW Tradeoff 662 29 Noise Figure Mode Option 356 Using Noise Figure 666 How to Define a Noise Figure Measurement 672 Example Typical Noise Figure Measurement Procedure 67...

Page 20: ...r Trace IQA and SA Mode 730 Marker Format 731 Searching with Markers 732 What Is a Peak 737 Marker Functions 739 I Q Analyzer IQA Marker Functions 740 SA Marker Functions 740 All about Limit Lines 741 How to Create Fixed Limit Lines 741 Relative Limit Lines 742 Build From Trace 742 Limit Options 743 How to Save and Recall Limits 744 Creating and Importing csv Limit Line Files 744 Display Line I Q ...

Page 21: ... Title 760 Edit Keywords 761 Full Screen Mode 761 Utilities 762 How to view and change Utilities Settings 762 Preferences 770 Quick Settings Table 770 Save and Reset Preferences 772 Language 772 Global Settings Overview 772 How to select a Language 773 Battery Saver 773 Startup Mode 774 Display 774 Audio 775 Date and Time 776 GPS Distance Settings 776 How to select CAT distance units 776 Frequency...

Page 22: ...attery 798 Internal Temperatures 798 Erase User Data 799 How to Erase User Data 799 Understanding the Fan Controls 800 32 File Management Saving and Recalling Files 804 Save Files 804 Recall Files 809 Move Copy Files 809 Set File Type and Select Device 810 Manage Files 813 Manage Folders 815 Edit Keywords 815 Prefixes and Suffixes for Filenames 816 Press Printing 820 How to print the current scree...

Page 23: ...9910X 876 836 Standard Capacity Battery N9910X 870 838 Battery Protective Functions 840 Battery Protective Functions N9910X 876 840 Battery Protective Functions N9910X 870 842 Batteries Safe Handling and Disposal 843 Battery Transportation 843 Environmental Requirements 844 Electrical Requirements 844 Electrostatic Discharge ESD Precautions 844 FieldFox Markings 844 Battery Markings 847 Packaging ...

Page 24: ...Calibration How Often Should Calibrate My Instrument 859 How do I Get an Instrument Calibration 859 What Are My Choices of Instrument Calibration 860 D Korean Battery Safety Translation E Russian Battery Safety Translation 872 F Keysight Software End User Licensing Agreement EULA 884 ...

Page 25: ...Spectrum Microwave Analyzer N9934B 6 5 Spectrum Microwave Analyzer N9935B 9 Spectrum Microwave Analyzer N9936B 14 Spectrum Microwave Analyzer N9937B 18 Spectrum Microwave Analyzer N9938B 26 5 Spectrum Microwave Analyzer N9950B 32 Vector Network Analyzer AND Spectrum Microwave Analyzer N9951B 44 Vector Network Analyzer AND Spectrum Microwave Analyzer N9952B 50 Vector Network Analyzer AND Spectrum M...

Page 26: ...ories that are available for the FieldFox please visit http www keysight com find fieldfox Table 1 2 Accessories Accessory Part Number Description N9910X 873 AC DC Adapter except for US Canada a a Depending on your region the FieldFox comes with either a N9910X 873 AC DC adapter or a N9910X 877 AC DC adapter N9910X 876 Lithium Ion Battery High Capacity N9910X 877 AC DC Adapter for US Canada onlya ...

Page 27: ... Firmware Software and Product Support FieldFox Data Link Software and Help Free download Includes help on editing calibration kits and cable files Refer to FieldFox Data Link Software Keysight Service Guide Free download FieldFox MW VNA SA Service Guide keysight com Firmware Updates Check to see if you have the latest FieldFox firmware FieldFox Current Firmware New CPU Keysight Conventions that a...

Page 28: ...ety Considerations on page 831 Denotes a hazard It calls attention to a procedure that if not correctly performed or adhered to would result in damage to or destruction of the product or loss of important data Do not proceed beyond a caution note until the indicated conditions are fully understood and met Denotes a hazard It calls attention to a procedure which if not correctly performed or adhere...

Page 29: ... options are included in the shipment according to the Box Contents List 3 For any question or problems refer to Contacting Keysight on page 5 Meeting Power Requirements for the AC DC Adapter The AC DC adapter supplied with the analyzer is equipped with a three wire power cord in accordance with international safety standards The power cable appropriate to the original product shipping location is...

Page 30: ...lly charge the battery Battery charge status is viewable In the upper right corner of the screen On the Battery screen To access the screen select System Service Diagnostics Battery Step Notes 1 Open the battery door Push the button on the battery compartment door while sliding the door outward 2 Insert the battery The terminals end of the battery is inserted into the compartment 3 Close the batte...

Page 31: ...e FieldFox either ON or OFF The battery can be fully charged externally using the external battery charger in about 4 hours When the battery is removed the FieldFox can still be powered by the AC DC adapter FieldFox ON OFF Settings To turn power ON briefly press the power button Boot up takes about 1 minute To switch to Standby mode low battery drain briefly press the power button See the Note abo...

Page 32: ...hardkey Press Mode Then More Then Shut down You can make a setting to automatically Power ON the FieldFox when a power source is connected Learn how on Power ON on page 795 Power Button LED Status FieldFox High Temperature Protection The following features prevent degradation or damage in the event of high internal temperatures in the FieldFox How to monitor the internal FieldFox temperature Press...

Page 33: ...ture which preserves measurement accuracy and maintains the long term reliability of the FieldFox Refer to Figure 2 1 In addition duty cycling is enabled when the internal average temperature of the FieldFox reaches the duty cycling threshold of above 64 C All applications except RTSA Power for internal circuitry is turned off between sweeps and delaying occurs for the next sweep In RTSA mode powe...

Page 34: ...ment When temperature reaches the maximum protection threshold 75 C some applications take additional measures Figure 2 1 Entering Auto Protect mode message above 64 C Displays for 3 sec Exiting Maximum Auto Protect Threshold Temperature Mode When the temperature drops to approximately 73 5 C a message is displayed indicating that the FieldFox is leaving Temperature Control Mode and normal operati...

Page 35: ...o shut down the FieldFox will display a warning of imminent shut down and the instrument turns off At above approximately 77 C a Maximum Auto Protect message Top WARNING message displays for 9 sec Red text at left bottom corner of display remains on until internal temperature returns to 75 5 C At above 78 C High Temperature Shut down will engage and turn OFF the FieldFox Refer to Figure 2 3 See al...

Page 36: ...ld of 64 C Power is turned off between sweeps and delaying occurs for the next sweep In RTSA mode power is only turned off in Single Sweep or Hold This enables you to control your instrument s temperature when you don t need to make a measurement by using the Run Hold hardkey to pause the sweep All applications including RTSA Display dims to 40 at 64 C Maximum Protect Initial 75 C When temperature...

Page 37: ... B N996xA B DC Input 19VDC 4ADC 60 Watts maximum when charging battery Learn more about Maximum power and voltages in the FieldFox Data Sheet Refer to https www keysight com us en assets 7018 06516 data sheets 5992 3702 pdf Very often coaxial cables and antennas build up a static charge which if allowed to discharge by connecting to the FieldFox may damage the instrument input circuitry To avoid s...

Page 38: ...38 Keysight N9938 90006 User s Guide Preparing for Initial Use of Your New FieldFox Take the FieldFox Tour Take the FieldFox Tour Front Panel ...

Page 39: ...FF charging Power Button LED Status on page 32 3 System Displays a sub menu for system setup System Settings on page 755 4 Function keys Includes Freq Dist Scale Amptd BW Sweep Trace Meas Setup Measure and Mode Refer to specific Mode 5 Preset Returns the analyzer to a known state How to Presetthe FieldFox on page 757 6 Enter Confirms a parameter selection or configuration 7 Marker Activates marker...

Page 40: ...l changes to values 17 Softkeys Allows selection of settings for configuring and performing measurements and for other FieldFox functions 18 Screen Transflective screen viewable under all lighting conditions If you are using your FieldFox in direct sunlight you do not need to shield the display from the sunlight In bright lighting conditions the display is brighter and easier to read when you allo...

Page 41: ...on page 147 Port 2 SA RF Input For SA use to make all measurements For CAT NA and VVM mode use to make Port 2 transmission measurements Maximum 50 VDC 27 dBm RF SA Mode Settings on page 151 GPS Ant SMA f connector for use with built in GPS Produces a settable 3 3 VDC or 5 VDC bias voltage for the antenna pre amplifier Use with a GPS antenna such as N9910X 825 Other GPS antennas can also be used GP...

Page 42: ...r Output ERTA mode Chapter 26 ERTA Extended Range Transmission Analysis Mode Option 209 on page 613 Secure Digital slot Use to extend the memory of the FieldFox Saving and Recalling Files on page 804 The mini USB port can be connected to your PC s standard USB port to send SCPI commands IMPORTANT It is recommended that only USB certified cables are used with the FieldFox Chapter 33 Using the Mini ...

Page 43: ...or Description Learn More Audio output jack for use with SA Mode Tune and Listen Tune Listen AM FM on page 168 DC Voltage Source for use with external DC Bias Variable Voltage Source Opt 309 on page 790 DC power connector used to connect to the AC DC adapter Maximum 19 VDC 4 ADC Internal Charging with the AC DC Adapter on page 825 ...

Page 44: ... Mode dependent 5 Scale division Mode dependent 6 Calibration Status CAT and NA Detection Method SA Cal ON Questionable Accuracy on page 142 7 Velocity Factor Fault Meas About Velocity Factor and Cable Loss on page 69 8 Averaging Status and Count Mode dependent 9 Data Mem Display CAT and NA Step FFT SA All about Trace Math on page 750 Resolution Bandwidth Res BW on page 185 10 Resolution Setting M...

Page 45: ...ower on page 57 14 Measurement Stop Freq or Distance Mode dependent 15 Actual Sweep Time Mode dependent 16 Limit Line Status All about Limit Lines on page 741 17 Time and Date Date and Time on page 776 18 Marker Readout All about Markers on page 726 19 Battery Status Viewing the Battery Charge Status on page 823 20 Measurement Type CAT and NA 21 Acquisition Mode dependent 22 Reference Position Mod...

Page 46: ... a set of values Back erases previously entered values Esc exits data entry without accepting the new value To complete the setting press Enter or a different softkey or hardkey Multiplier Abbreviations Many times after entering numeric values a set of multiplier or suffix softkeys are presented The following explains the meaning of these abbreviations Select Frequency multipliers as follows GHz G...

Page 47: ...ls and microscopic particles of dirt are difficult to remove from these surfaces Do not set connectors contact end down on a hard surface The plating and mating plane surfaces can be damaged if the interface comes in contact with any hard surface Wear a grounded wrist strap and work on a grounded conductive table mat This helps protect the analyzer and devices from electrostatic discharge ESD Refe...

Page 48: ...48 Keysight N9938 90006 User s Guide Preparing for Initial Use of Your New FieldFox Connector Care ...

Page 49: ...tware and product s upport 589310103 html via FieldFox Manuals Firmware Software and Product Support CAT Mode Distance to Fault measurements are discussed in Chapter 4 DTF Distance to Fault Measurements IMPORTANT For CAT and NA modes limit lines do not apply where F1 F2 Measurement Selection on page 51 Quick Settings Table on page 52 Frequency Range on page 53 Scale Settings on page 53 Averaging o...

Page 50: ...er 8 Calibration for NA CAT and VVM Modes on page 125 All about Markers on page 726 All about Limit Lines on page 741 All about Trace Math on page 750 Learn more in Making 75Ω ohm Measurements in the Supplemental Online Help at https www keysight com us en lib resources service manuals keysight fieldfox library help and manuals 2153870 html Keysight FieldFox Library Help and Manuals FieldFox Onlin...

Page 51: ... disruption in the transmission line Units are in return loss format expressed as a positive number in dB unless the measurement selected is DTF VSWR Learn more about DTF Measurements refer to Chapter 4 DTF Distance to Fault Measurements Return Loss DTF Displays both a Return Loss measurement and a DTF measurement Use this format to display the frequency settings that are used to make the DTF meas...

Page 52: ...w the FieldFox Configuration Guide at https www keysight com us en assets 7018 06515 configuration guid es 5992 3701 pdf DTF Lin Distance to Fault in Linear format TDR Lin rho The Y axis of the display is linear real unitless values A trace without reflections shows as 0 zero Maximum reflections from an open or short show as 1 TDR ohm The Y axis of the display is impedance ohms TDR DTF Both TDR an...

Page 53: ...changed after a calibration is performed the cal becomes interpolated Learn more in Interpolation on page 142 How to set Frequency Range Press Freq Dist Then choose from the following Start and Stop frequencies beginning and end of the sweep Center and Span frequencies the center frequency and span of frequencies half on either side of center Follow each setting by entering a value using the numer...

Page 54: ...the Top graticule Bottom to set the value of the Bottom graticule Enter a negative value by pressing Run Hold either before or after typing a value Averaging Trace Averaging helps to smooth a trace to reduce the effects of random noise on a measurement The FieldFox computes each data point based on the average of the same data point over several consecutive sweeps Average Count determines the numb...

Page 55: ... Trace smoothing does NOT significantly increase measurement time Smoothing can be used with any CAT format When enabled Smo appears on the FieldFox screen How to set Smoothing 1 Press BW 2 2 Then Smoothing ON OFF 3 Then Sm Aperture and enter a value between 0 and 25 percent using the numeric keypad 4 Press Enter Single or Continuous Measure This setting determines whether the FieldFox sweeps cont...

Page 56: ... set Resolution 1 Press Sweep 3 Resolution 2 Then choose one of the following 101 201 401 601 801 1001 1601 4001 10001 Using SCPI Resolution can be set to any number of points between 3 and 10001 See the Programming Guide at https www keysight com us en lib resources service manuals keysight fiel dfox library help and manuals 2153870 html Sweep Time The fastest possible sweep time is always used a...

Page 57: ... set Output Power 1 Press Meas Setup 4 Power 2 Then Output Power High Sets output power to the maximum achievable power at all displayed frequencies Output power is NOT FLAT across the displayed FieldFox frequency span Use the High power setting when better dynamic range and lower noise is desired Please see Appendix B Specifications Data Sheet on page 857 for expected power levels Low Sets output...

Page 58: ...ime without affecting calibration accuracy How to set Interference Rejection 1 Press Meas Setup 4 Interference Rejection current setting 2 Then choose from the following Off No interference rejection and fastest possible sweep speed Minimum The lowest level of Interference rejection Medium The medium level of Interference rejection Maximum The highest level of Interference rejection Coupled Freque...

Page 59: ...ely 0 dB return loss is displayed When measuring a LOAD very little power is reflected and values of 40 dB to 60 dB are displayed The minus sign is usually ignored when conveying return loss For example a component is said to have 18 dB return loss rather than 18 dB How to Measure Return Loss Connect the jumper cable or any adapter used to connect the device under test DUT Select Preset then Prese...

Page 60: ... 1 Port 3 Connect the cable to be tested 4 Press Freq Dist and enter Start and Stop frequency values of the measurement 5 Press Sweep 3 then Min Swp Time Increase the Sweep Time until a stable trace is visible on the screen The amount of time that is required increases with longer cable lengths Learn more in the Supplemental Online Help at https www keysight com us en lib resources service manuals...

Page 61: ...reen below the graticules 2 Port Insertion Loss Measurements A 2 port Insertion Loss measurement is used to measure the loss through a DUT device under test or cable over a specified frequency range The FieldFox signal source is transmitted out the RF OUT connector through the DUT and into the RF IN connector Both ends of the DUT must be connected to the FieldFox either directly or indirectly usin...

Page 62: ...tion setting Press Cal 5 then perform a calibration Learn more on How to Perform a Calibration on page 127 Connect the DUT and view the insertion loss measurement results When measuring very long lengths of cable it may be necessary to increase the sweep time Learn how on page 56 Learn how in the Supplemental Online Help at https www keysight com us en lib resources service manuals keysight fi eld...

Page 63: ...ransmission line In this chapter the cable to be tested is referred to as the DUT Device Under Test Settings that are NOT unique to DTF measurements are documented in the CAT Mode Chapter 3 CAT Cable and Antenna Test Mode In this Chapter How to make DTF Measurements on page 64 DTF Settings Table on page 66 DTF Measurement Format on page 66 DTF Start and Stop Distance on page 67 Frequency Mode on p...

Page 64: ...hen Preset to return the FieldFox to the default settings 3 Then Mode then CAT 4 Then Meas 1 then DTF 5 Press Freq Dist then Stop Distance and enter the length of the DUT You can optionally set the Start Distance 6 Press Cal 5 and follow the Cal prompts Learn all about Calibration in How to Perform a Calibration on page 127 7 Disconnect any components or antenna that should NOT be measured and con...

Page 65: ...les then Recall Cable or directly enter the Velocity Factor Cable Loss of the DUT using the Velocity Factor and Cable Loss keys 10 Connect the start end of the DUT to the FieldFox 11 Press Meas Setup 4 then Settings then Next Page If the Alias free Range setting is False then you may see Alias faults on the screen Learn more on page 73 ...

Page 66: ...ange the value When finished changing a value press Done Edit 4 Press Dock Window to relocate the Settings table to a position relative to the trace window The setting persists through a Preset Choose from the following Full Default setting Only the Settings table is shown on the screen The trace window is temporarily not shown Left The Settings table is shown to the left of the trace window Botto...

Page 67: ... following Start Distance Enter a value using the numeric keypad the arrows or the rotary knob then Enter By default the Start Distance is set to 0 Meters This means that the measurement will display faults starting at the point at which calibration standards are connected Stop Distance Enter a value between the start distance and 5 km or 16 404 ft using the numeric keypad the arrows or the rotary...

Page 68: ... for the DTF measurement 3 Then Max Stop Freq and type the stop frequency to use for the DTF measurement OR 1 Press More 2 Then Max Freq Span and type the frequency range to use for the DTF measurement 3 Then Center Frequency and type the center frequency of the range to use for the DTF measurement When the DTF frequencies are set manually they may not be the optimum frequencies for measuring the ...

Page 69: ... 100 m 1dB m Because the FieldFox performs this measurement with 1 port the test signal travels down the cable and then back for a total loss of 20 dB After a calibration has been performed for the purpose of illustrating this point connect an OPEN to the end of the cable a maximum sized fault for 100 reflection of the 300 MHz test signal Without compensation for the loss of the cable a 20 dB resp...

Page 70: ... edit these files or create new cable files using the following procedure or using the FieldFox Data Link Software The Cable correction data survives a Mode Preset and Preset With a DTF measurement present 1 Press Meas Setup 4 DTF Cable Specifications DTF Cable Specifications 2 Press New Cable then Yes to clear all data from the existing DTF Cable table and reset header information to default sett...

Page 71: ...Choose from Internal default setting USB must be connected or SD card About Cable files Cable files are saved to and recalled from the Cables folder If the folder does not already exist on a USB or SD card it is created automatically before storing the file Cable files are stored as xml files Existing cable files that are preloaded into the FieldFox firmware can be overwritten Your edited file wil...

Page 72: ...y to choose between optimizing DTF measurements for resolving closely spaced faults or for the ability to measure low level faults How to select Window settings 1 Press Meas Setup 4 Settings 2 Then press arrows to move to the Window row 3 Then press Edit 4 Then press Window and choose from the following Maximum Maximum Optimized for dynamic range the noise floor is lowered to provide the ability t...

Page 73: ...o fault measurement For example with range resolution of 500 mm if the distance to fault is 10 meters this value could be inaccurate by 500 mm or between 9 5 to 10 5 meters This value is calculated from frequency span resolution points Response Resolution not displayed indicates the distance that could be between two faults and still show as separate faults Learn more in Window Settings on page 72...

Page 74: ...n distance That is if a true fault is present at 10 3 meters changing the stop distance from 15 m to 20 m will not move the fault the fault will remain at 10 3 meters However an alias response will appear to move An unterminated cable with NO perfect load at the end will show faults that appear to be beyond the end of the cable These are NOT alias faults These faults appear as the signal reflects ...

Page 75: ... type of problem in a length of cable or transmission line Settings that are NOT unique to TDR measurements are documented in Chapter 3 CAT Cable and Antenna Test Mode on page 49 In this chapter the cable to be tested is referred to as the DUT Device Under Test In this Chapter TDR Measurement Format on page 78 TDR Settings Table on page 78 TDR Start and Stop Distance on page 79 TDR Sweep on page 7...

Page 76: ...ettings 3 Then Mode then CAT TDR 4 Then Meas 1 then More then DTF Lin or TDR Lin rho or ohm 5 Press Freq Dist then Stop Distance and enter the length of the DUT You can optionally set the Start Distance 6 Press Cal 5 and follow the Cal prompts Learn all about Calibration in How to Perform a Calibration on page 127 7 Disconnect any components or antenna that should NOT be measured and connect a LOA...

Page 77: ... or directly enter the Velocity Factor Cable Loss of the DUT using the Velocity Factor and Cable Loss keys 10 Connect the start end of the DUT to the FieldFox 11 Press Meas Setup 4 then Settings then Next Page If the Alias free Range setting is Off then you may see Alias faults on the screen Learn more in About Alias Faults on page 86 ...

Page 78: ...TF Lin The Y axis of the display is linear real unitless values X Axis displays distance to fault in meters TDR DTF TDR and DTF are displayed TDR Settings Table You can set and view all of the TDR settings including some calculated values on the TDR Settings table Learn more in Calculated TDR values on page 85 How to make settings on the TDR settings table Press Meas Setup 4 Then Settings Press Ne...

Page 79: ...ent The minimum value of this setting is 100 MHz TDR Start and Stop Distance In TDR measurements you set the physical length of the DUT The FieldFox calculates the frequency range of the measurement from this distance The longer the DUT the lower the frequencies that are used You can NOT set the frequencies manually in TDR However you CAN limit the maximum frequency using the TDR Sweep setting Lea...

Page 80: ...1601 Frequency Mode All TDR measurements are made with frequency settings and using Inverse Fourier Transform IFT the time and distance to faults are calculated How to set Frequency Mode With a TDR measurement present Press Meas Setup 4 Then Freq Mode Choose one of the following Lowpass The frequency range of a TDR measurement is set automatically based on the Start and Stop Distances Use Lowpass ...

Page 81: ...r 100 m 1dB m Because the FieldFox performs this measurement with 1 port the test signal travels down the cable and then back for a total loss of 20 dB After a calibration has been performed for the purpose of illustrating this point connect an OPEN to the end of the cable a maximum sized fault for 100 reflection of the 300 MHz test signal Without compensation for the loss of the cable a 20 dB res...

Page 82: ...he following procedure or using the FieldFox Data Link Software The Cable correction data survives a Mode Preset and Preset With a TDR measurement present Press Meas Setup 4 Then DTF Cable Specifications Then Edit Save Recall Cables Press New Cable then Yes to clear all data from the existing DTF Cable table and reset header information to default settings Then Edit Cable to open the Cable Editor ...

Page 83: ...folder If the folder does not already exist on a USB or SD card it is created automatically before storing the file Cable files are stored as xml files Existing cable files that are preloaded into the FieldFox firmware can be overwritten Your edited file will NOT be overwritten when firmware is updated To DELETE a Cable file use the Manage Files feature Learn more in Manage Files on page 813 How t...

Page 84: ...izing TDR measurements for resolving closely spaced faults or for the ability to measure low level faults How to select Window settings Press Meas Setup 4 Then Settings Then press arrows to move to the Window row Then press Edit Then press Window and choose from the following Maximum Maximum Optimized for dynamic range the noise floor is lowered to provide the ability to measure low level response...

Page 85: ...ault X axis units for TDR measurement settings are displayed in Meters How to change TDR units With a TDR measurement present press Freq Dist Then More then Distance Unit m feet The current selection is underlined m meters Feet The TDR Units setting is also available on the TDR Settings table Calculated TDR values Press Next Page on the TDR Settings Table to view the following calculated Values no...

Page 86: ...ty factor c speed of light Points resolution Bandwidth frequency range Alias free Range On Off On No Alias images Off Alias images may appear in the response About Alias Faults An alias fault is not a true device response An alias fault appears because of the method used to convert frequency to time On the TDR Settings page above the c Alias free Range Off setting indicates alias images MAY appear...

Page 87: ...s The largest fault is the open end of the cable To avoid confusion set the Stop distance shortly after that fault How to Prevent Undersampling Undersampling is when the TDR measurement is inaccurate because the frequency step size resolution is too large The predominant symptom of this is when the measured impedance is incorrect For example when measuring a 75Ω cable a marker that is on a part of...

Page 88: ...88 Keysight N9938 90006 User s Guide TDR Time Domain Reflectometry Option 215 TDR Measurement Settings ...

Page 89: ...pter About S parameters on page 91 Mixed Mode S Parameters on page 92 Parameter Conversion on page 93 Receiver Measurements on page 94 Multi Trace Configurations on page 95 Quick Settings on page 96 Calibration Settings on page 97 Format on page 98 Frequency Range on page 99 Scale Settings on page 99 Magnitude Offset on page 100 Electrical Delay on page 101 Phase Offset on page 101 Averaging on pa...

Page 90: ...namic Range on page 112 Why and When to Calibrate on page 126 All about Markers on page 726 All about Limit Lines on page 741 All about Trace Math on page 750 Learn how to make 75Ω ohm Measurements in the Supplemental Online Help https www keysight com us en lib resources servic e manuals keysight fieldfox library help and manua ls 2153870 html Keysight FieldFox Library Help and Manuals FieldFox O...

Page 91: ... in out FieldFox receiver port in FieldFox source port The FieldFox automatically switches the internal source and receivers to make both forward and reverse measurements Therefore the FieldFox can measure all four S parameters with a single connection When the source comes from port 1 the measurement is said to be in the forward direction When the source comes from port 2 the measurement is said ...

Page 92: ...ulti Trace Configurations on page 95 3 Press Freq Dist then either Start and Stop or Center and Span to enter a Frequency Range for the measurement 4 Press BW 2 then IFBW to select the IF Bandwidth for the measurement Narrower bandwidths require more time to sweep but lowers trace noise 5 Press Sweep 3 then Resolution to select the number of data points for the measurement More data points require...

Page 93: ...converts the active S parameter trace to an equivalent impedance Z admittance Y or reciprocal 1 S parameter How to select parameter conversions Press Measure 1 Then select an S parameter Then More Then Conversion Then choose from the following Off default No conversion is performed Z Conv or Y Conv Perform conversion for impedance Z or admittance Y Then choose from the following for either Auto Th...

Page 94: ...ox sets the source port based on the selected receiver Port 1 Select when measuring transmission at B receiver Port 2 Select when measuring reverse transmission at A receiver Learn more about Raw Receiver Measurements at the FieldFox Supplemental Online Help https www keysight com us en lib resources service manuals keysight fi eldfox library help and manuals 2153870 html Keysight FieldFox Library...

Page 95: ...Frequency Range IF BW Resolution Average and Output Power settings are common for all displayed traces All other trace settings such as measurement format and limit lines are applied individually to the ACTIVE trace in the same manner as when a single trace is present By default a marker is created on ALL traces However they can be created individually by disabling Coupled Markers Learn more in Co...

Page 96: ...e viewing of the active trace 1 Press System 7 Full Screen 2 Press any key to return to the standard display Quick Settings Both CAT and NA Modes allow you to view and change most relevant settings from a single location All of these settings are discussed in this chapter and unless otherwise noted ALL of these settings can also be made using the standard softkey menus x1 1 trace standard configur...

Page 97: ... setting persists through a Preset Choose from the following Full Default setting Only the Settings table is shown on the screen The trace window is temporarily not shown Left The Settings table is shown to the left of the trace window Bottom The Settings table is shown below the trace window When finished changing ALL settings press Done to save your settings Calibration Settings NA Mode has a pa...

Page 98: ...ainly for S11 and S22 which are plotted on a Smith Chart Displays series resistance and reactance More then Polar Used mainly for S11 and S22 Displays magnitude and phase of the reflection coefficient Group Delay Used mainly for S21 and S12 Displays signal transmission propagation time through a device in seconds The Group Delay aperture is the current Smoothing aperture Default is 1 5 of the X ax...

Page 99: ...alue using the numeric keypad the arrows or the rotary knob After using the arrows or the rotary knob press Enter The increment setting of the arrows is based on the current span and can NOT be changed in NA Mode After using the keypad select a multiplier key Learn more in Multiplier Abbreviations on page 46 Scale Settings Adjust the Y axis scale to see the relevant portions of the data trace The ...

Page 100: ...t the value of the reference line Enter a negative value by pressing Run Hold either before or after typing a value Ref Pos Manually set the position of the reference line Values must be between 0 TOP line and 10 BOTTOM line Magnitude Offset Magnitude Offset allows you to offset the magnitude not phase data by a fixed and or sloped value in dB If the display format is Linear Magnitude or Real unit...

Page 101: ...e Use the electrical delay feature to compensate for the linear phase shift through a device and view only the deviation from linear phase of the device You can set the electrical delay independently for each measurement trace To apply an electrical delay to all measurement traces use Port Extensions Learn how in Port Extensions on page 108 Learn how to set Phase formats in Phase Offset on page 10...

Page 102: ...en set before calibration each calibration standard is measured n times and averaged More time is needed to perform the calibration but there will be less noise in the resulting error terms which means that subsequent measurements will also have less noise In addition noise is further reduced by continuing to average after calibration How to set Averaging 1 Press BW 2 2 Then Average n where n is t...

Page 103: ...kHz Smoothing Trace smoothing averages a number of adjacent data points to smooth the peak to peak noise values on a displayed trace The number of adjacent data points that are averaged is known as the smoothing aperture Aperture is set by specifying a percentage of the X axis span Trace smoothing does NOT significantly increase measurement time Smoothing is used in Group Delay measurements althou...

Page 104: ...m a trace Select more data points to increase measurement resolution However more data points also takes more time to complete an entire measurement sweep When the Resolution is changed after a calibration is performed the cal becomes interpolated Learn more in Interpolation on page 142 How to set Resolution 1 Press Sweep 3 Resolution 2 Then choose from the following 101 201 401 601 801 1001 1601 ...

Page 105: ...t the Ref In Trig In connector on the FieldFox top panel See External Triggering for SA Mode in Triggering on page 195 Trigger Source 1 Press Sweep 3 Trigger Trig Source 2 Then choose from the following Int Internal Sweeps are initiated by the FieldFox internal circuitry When Sweep is set to Continuous a new sweep begins automatically when the previous sweep ends Ext External A sweep is initiated ...

Page 106: ...ires forward and reverse sweeps or displaying multiple parameters that would require forward and reverse sweeps If the FieldFox is in a state requiring two sweeps and the user selects point mode triggering an error Error Point trigger not compatible with 2 port cal will be displayed and point mode trigger will revert to Internal trigger IMPORTANT If trigger signals come faster than the FieldFox ca...

Page 107: ... 15 dBm After calibration the power level can be decreased for amplifiers or increased for higher dynamic range How to set Output Power 1 Press Meas Setup 4 2 Then Output Power High Sets output power to the maximum achievable power at all displayed frequencies Output power is NOT FLAT across the displayed FieldFox frequency span Please see Specifications Data Sheet on page 857 for expected power l...

Page 108: ...ou are unable to perform a calibration directly at your device because the location is not accessible Perform a calibration at a convenient place then use port extensions to compensate for the time delay phase shift to the desired reference plane On the FieldFox port extensions does not compensate for the loss of the additional electrical length nor any mismatch errors beyond the calibration refer...

Page 109: ...rent Velocity Factor setting is visible to the right red box in above image Velocity Factor The electrical delay or port extension value is entered as delay or electrical length in units of time Entering the velocity factor causes the FieldFox to accurately display the equivalent physical length in meters NOT available in feet that corresponds to the entered electrical delay Velocity factor is the...

Page 110: ...The A or B display state is recalled If none have been defined then the default display state is recalled OFF The B display state is visible but without the Big Marker Readout With A or B selected then press Edit Big Marker A or B Then edit the following display state settings Num Traces Choose the Multi Trace configuration x1 x2 or x3 Only Overlayed configurations are allowed Learn more in Multi ...

Page 111: ...OFF The default marker 1 is created in Normal Learn more in Marker Functions on page 739 Enabled Turns the Big Readout of the corresponding marker ON and OFF The default marker 1 is set ON by default To move a marker press Marker then Marker then scroll to the marker number to be moved The new marker position can NOT be saved with the A or B display state Settings that are NOT listed above are NOT...

Page 112: ...nt to be valid input signals must be within these boundaries The following settings will increase the dynamic range of your NA mode measurement Increase Power Level Press Meas 4 then Output Power High Lower the IFBW Press BW 2 then IF BW Increase Averaging Press BW 2 then Average The following procedure MAY increase the dynamic range of your NA mode measurement The results you see will depend on t...

Page 113: ... NOT unique to Time Domain are documented in Chapter 6 NA Network Analyzer Mode on page 89 In This Chapter Time Domain Transform Settings Trace Settings Overview on page 115 Transform Settings Table on page 116 Start Stop Frequency Range and Points on page 116 Stimulus Mode on page 117 Set Frequency Lowpass on page 117 Start Stop Time on page 117 Distance Units on page 118 Window Layout on page 11...

Page 114: ...114 Keysight N9938 90006 User s Guide Time Domain Option 010 Gating Settings Start Stop Center and Span Gate Times on page 123 Gating Type on page 123 ...

Page 115: ...end creates a mismatch or change in the line impedance The frequency domain of an S11 measurement shows reflections caused by mismatches in the cable It is impossible to determine where the mismatches physically occur in the cable The Time Domain response shows both the location and the magnitude of each mismatch The responses indicate that the second cable bend is the location of a significant mi...

Page 116: ... settings require that you then press a softkey to change the value When finished changing a value press Done Edit Press Dock Window to relocate the Settings table to a position relative to the trace window The Dock Window setting persists through a Preset Choose from the following Full Default setting Only the Settings table is shown on the screen The trace window is temporarily not shown Left Th...

Page 117: ...s disabled Bandpass Impulse Easiest method can be used with any frequency sweep Most useful for measuring band limited devices such as filters and DC blocked cables This mode does NOT show capacitive and inductive reactance For the same frequency span and number of points band pass mode has twice the impulse width which hides closely spaced responses degrading the response resolution Set Frequency...

Page 118: ...se from m meters or Feet Window Layout This setting is used to create additional traces or select a new layout for traces that are already created Choose from x1 x2 x2H x3H x3 x4H Learn more about multi trace configurations in Multi Trace Configurations on page 95 Transform Window There are abrupt transitions in a frequency domain measurement at the start and stop frequencies causing overshoot and...

Page 119: ...form Settings table Learn how in Transform Settings Table on page 116 Line Loss and Velocity Factor By default the FieldFox does NOT correct Time Domain measurements to account for the inherent loss of a cable However to make more accurate measurements Line Loss and Velocity Factor should be considered Any of the following four methods can be used to make this same Window setting Impulse Width val...

Page 120: ...the end of the cable a maximum sized fault for 100 reflection of the 300 MHz test signal Without compensation for the loss of the cable a 20 dB response would be visible at 100 meters which is the OPEN at the end of the DUT This is from 10 dB of loss through the cable in each direction With compensation for the loss using the manufacturer s specification the FieldFox compensates the trace as thoug...

Page 121: ...the specific trace Select the trace Press Measure Setup 4 Then Transform Then choose from Transform On Trace displays Time Domain data Transform Off Trace displays frequency domain data Gate Enable Enable Gating for the specific trace Select the trace Press Measure Setup 4 Then Transform Then choose from Gating On Trace displays Time Domain data Gating Off Trace displays frequency domain data ...

Page 122: ...med while viewing a Time Domain trace Then either disable Transform or separately view a frequency domain trace to see the trace with the gated effects removed The following image shows how gating can affect measurement results All 4 traces show the same S11 measurement Trace 1 shows the frequency response without gating enabled Trace 2 shows the transform response without gating enabled Trace 3 s...

Page 123: ...ither Start and Stop or Center and Span Press Gating Start Stop A settings table appears that allows you to navigate and select the following settings These settings are made exactly like those made on the Transform Settings table Learn how in Transform Settings Table on page 116 Gating Type This setting defines the type of filtering that will be performed for the gating function The gate start an...

Page 124: ...e stopband For all filter shapes T2 is equal to T3 and the filter is the same on both sides of the center time Minimum gate span is twice the cutoff time Each gate shape has a minimum recommended gate span for proper operation This is a consequence of the finite cutoff rate of the gate If you specify a gate span that is smaller than the minimum span the response will show the following effects dis...

Page 125: ...e 126 CalReady on page 127 How to Perform a Calibration on page 127 Mechanical Cal on page 129 ECal on page 131 Simple Response Cals on page 134 View Cal on page 136 Calibration Type on page 136 Enhanced Response Optimization on page 141 Interpolation on page 142 Cal ON Questionable Accuracy on page 142 Compatible Mode Calibrations on page 142 Save the Calibration on page 143 CalReady Properties o...

Page 126: ... Level IF BW and Resolution Therefore make these measurement settings before calibrating Increased Averaging lower IF BW and higher Resolution all cause slower sweeps and slower calibration times Learn about Interpolation and Questionable Accuracy in Interpolation on page 142 When the FieldFox temperature changes more than about 10 F 5 C Learn more in How to monitor the internal FieldFox temperatu...

Page 127: ...e frequency range of the FieldFox using a number of data points that allows reasonable interpolation over the FieldFox frequency range This calibration known as CalReady allows you to immediately make measurements of a DUT that is connected directly at the test ports PORT 1 and or PORT 2 CalReady corrects measurements when the FieldFox is turned ON and when a measurement is created with no other c...

Page 128: ...lable with FieldFox Learn more in ECal on page 131 User Cal OFF ON Turns ON and OFF the effects of the user calibration that you performed The OFF state reverts to CalReady View Cal Shows the properties of the current calibration Learn more in View Cal on page 136 More Learn about Cal Ready Properties in CalReady on page 127 Source Unleveled errors During calibration the frequency range of the mea...

Page 129: ...procedures How to perform a Mechanical Cal Disconnect the DUT from the FieldFox If a jumper cable or adapter is required to connect the DUT to the FieldFox then connect those components to the FieldFox connectors The effects of those components will be measured and removed during the calibration and only the effects of the DUT will be displayed in the measurement results These should be high quali...

Page 130: ...rrect for the DUT ports to be calibrated then Press Change DUT Connectors to select the correct connector types that are on your DUT For each port Use the arrows or rotary knob to change the DUT connector type Press Change Gender to change the gender of the DUT connector Then press Next to confirm the selection and continue the process For each port Use the arrows or rotary knob to select the Cal ...

Page 131: ...ed at the factory and the data stored within the memory of the ECal module The FieldFox uses this stored data along with the measured data to calculate the error terms for a measurement calibration If an error appears Failure to compute calibration steps check to ensure that the frequency range of the Cal Kit covers the frequency range of the measurement You can verify the frequency range of your ...

Page 132: ...ibration Using ECal 1 Make measurement settings on the FieldFox frequency range number of points etc Simple ECal ON When choosing Full 2 port calibration if you are able to connect your ECal simultaneously to both device ports you should use Simple ECAL i e this ensures that you are using the correct Thru calibration model Simple ECal OFF Set simple ECal to OFF when you have a test setup where you...

Page 133: ...er to the ECal module is too low it cannot detect which FieldFox ports it is connected to If you are having this problem select OFF Then during the calibration the FieldFox will prompt you to connect the ECal module ports to specific FieldFox ports 9 Optionally press Advanced then Extended Cal N995xB 6xB Only ON The FieldFox Extended Cal measures additional points outside the current frequency ran...

Page 134: ...nknown THRU When prompted Connect port 1 to port 2 then connect port and port 2 using a coaxial cable or an appropriate thru adapter Do NOT use the internal ECal THRU because the ECal thru calibration model is incorrect for this calibration type Flush THRU When prompted Connect port 1 directly to port 2 then you must connect the ports directly together at the calibration reference plane with no ad...

Page 135: ...onse or Short Response for the port to be calibrated The availability of this calibration on Port 2 may require an option Connect an OPEN or SHORT standard to the specified port and press Measure 4 For 2 port measurements Select Normalization Connect a short high quality phase stable cable between the FieldFox port 1 and port 2 connectors then press Measure 5 Press Finish 6 Connect the DUT CAL ON ...

Page 136: ...e bottom box shows the S parameters that are displayed but NOT corrected by the current performed calibration but rather the CalReady calibration Learn more about CalReady in CalReady on page 127 Calibration Type The FieldFox simplifies the calibration process by recommending the most accurate and efficient calibration type based on the displayed S parameters However there may be times when you ma...

Page 137: ...ow result in correction that requires background measurements sweeps in both directions regardless of the displayed measurements The displayed traces are updated at a slower rate than Enhanced Response and 1 port calibrations which require sweeps in one direction only 1 Port OSL DUT No restrictions S parameters Corrected S11 or S22 Standards OPEN SHORT LOAD Sweeps in ONE direction FULL 2 Port May ...

Page 138: ...eps in BOTH directions Enhanced Response Cal Forward OR Reverse May require an option Faster measurements than Full 2 Port DUT Non Insertable or Insertable S parameters PARTIALLY Corrected S21 and S11 Forward OR S12 and S22 Reverse Standards OPEN SHORT LOAD on ONE port Defined or Flush THRU between ports Sweeps in ONE direction TRL Mechanical Cal ONLY A complete 2 Port calibration with potentially...

Page 139: ...is the internal signal leakage between the test ports The Isolation step measures Load standards that are connected to one or both FieldFox test ports Perform an isolation calibration when you are testing a device with high insertion loss such as the stop band of a filter or a switch in the open position The isolation step can add noise to the error model when the measurement is very close to the ...

Page 140: ... being calculated in DTF measurements CAT mode and Time Domain NA mode When the media is waveguide the velocity factor changes with frequency FieldFox calculates this effective velocity factor automatically However the settings are different for CAT mode and NA mode CAT Mode How to make Waveguide settings These settings are necessary ONLY when making DTF measurements 1 Press Measure 1 then Distanc...

Page 141: ... or if using Time Domain Transform 1 Press Meas Setup 4 Transform Transform Settings 2 Under Transform Stimulus Settings set the Start and Stop frequencies to those of the Waveguide 3 Set Stimulus Bandpass Impulse 4 Press Done 5 Press Meas Setup 4 or Back 6 Then Calibration Settings 7 Set Media Waveguide 8 Set Cutoff Frequency This is the absolute minimum frequency of the waveguide This value must...

Page 142: ...ERY accurate measurements continue to be made Interpolated Calibrations are only slightly less accurate than a calibration performed at the measurement settings Learn more about the relative accuracy of FieldFox calibrations in Cal ON Questionable Accuracy on page 142 When a calibration that you performed is being interpolated an asterisk is added to the Cal annotation For example Cal ON U is show...

Page 143: ...setting does NOT survive Preset or Power ON OFF 1 Press Cal 5 More 2 Then press CalReady to toggle between the following selections 2 Port Cal default Corrects all four S parameters Requires a forward and reverse sweep which causes slower trace measurements Learn why in Calibration Type on page 136 Enh Response Corrects forward S21 and S11 and reverse S12 and S22 measurements separately Therefore ...

Page 144: ... cable or at FieldFox PORT 1 connector In CAT Mode select Return Loss In NA Mode select S11 with Log Mag format For frequencies lower than 9 GHz observe the trace on the FieldFox screen Lower than 35 dB indicates a GOOD calibration Higher than 30 dB indicates that you should recalibrate Verifying Phase Accuracy Connect a LOAD standard at the calibration reference plane where calibration standards ...

Page 145: ...cy In general the measurement result should agree with the characteristics of the calibration standard Test the Jumper Cable With the LOAD standard still connected move the jumper cable while observing the trace If the measurement trace is relatively stable the jumper cable is of good quality If you observe significant movement in the peaks of the measurement trace when moving the cable 5 dB the j...

Page 146: ... standards to ensure the most accurate calibration Even with the optional Load phase accuracy begins to degrade when the return loss is greater than about 20dB CalReady is accurate ONLY when the DUT is directly connected at the test ports and most accurate at room temperature For highest accuracy a new Mechanical Cal should be performed When the temperature changes more than about 10 F 5 C When th...

Page 147: ... us en assets 7018 06714 application notes 595 2 0292 pdf For information on using the FieldFox Remote Viewer which enables you to view the FieldFox from your iOS device refer to https www keysight com us en assets 7018 04070 application notes 599 1 2938 pd f Figure 9 1 SA Display with Markers To better reflect the enhancements implemented during the alignment process for firmware versions A 10 15...

Page 148: ... for Compressed Measurements on page 160 Field Strength Measurements on page 161 Using the Antenna Cable Editor on page 163 Source Tracking Offset and Offset Reversal on page 167 Tune Listen AM FM on page 168 Analog Demod on page 172 Independent Source Tracking Generator on page 184 Resolution Bandwidth Res BW on page 185 Video Bandwidth Video BW on page 186 AF RBW Audio Frequency Resolution BW on...

Page 149: ...Error on page 216 Old Data Indicator on page 217 Radio Standards and Channel Measurements on page 217 Measurement Preset on page 217 Averaging on page 218 Traces on page 218 Channel Power CHP on page 218 How to Set Up EMF Settings Requires EMF Option 358 GPS Option 307 and SA Mode Option 233 Mixed Analyzers on page 227 Spectrum Emission Mask SEM SA Mode Only on page 240 IQ Analysis Requires Option...

Page 150: ...eysight N9938 90006 User s Guide SA Spectrum Analyzer Mode Option 233 Mixed Analyzers Optional Settings All about Markers on page 726 All about Limit Lines on page 741 Saving and Recalling Files on page 804 ...

Page 151: ...ency In addition the Reverse Swap feature can be used to quickly reverse the Start and Stop frequencies Learn how in Reverse Swap on page 156 The frequency range of the measurement can be changed using the following methods Set Center and Span frequencies Set Start and Stop frequencies Toggle between Zero and Last selected span Set Full Span of the FieldFox Using Channel selection Learn how in Cha...

Page 152: ...Enter The increment setting of the arrows is based on the current span This can be changed in SA Mode See How to change frequency step size on page 153 below After using the keypad select a multiplier key Learn more in Multiplier Abbreviations on page 46 Two more ways to change the frequency range Press Freq Dist Then choose from the following Zero Last Span Each key press toggles the frequency sp...

Page 153: ...elects the entire frequency span of the FieldFox The Center frequency is set automatically Radio Standard A Radio Standard is a collection of settings that are applied to the FieldFox for specific RF protocols When a Radio Standard is applied the FieldFox frequency and channel settings change to that of the standard By default the FieldFox locates the center frequency of the standard in the middle...

Page 154: ...read and presented at the top of the list of internal Radio Standards How to Import and Delete a Custom Radio Standard First press Save Recall and select the Device from which the Radio Standard will be read Most likely this will be USB or SD Card Press Measure 1 OR Freq Dist then More Then Radio Standard Then Radio Standard Then Import Radio Standards Then select the csv file using the arrows or ...

Page 155: ...Radio Standard Press Freq Dist Then choose from the following Center Channel Places the center frequency of the specified channel in the middle of the X axis Start Channel Places the lowest frequency of the specified channel at the beginning of the X axis Stop Channel Places the highest frequency of the specified channel at the end of the X axis Freq Span Changes the span of frequencies while the ...

Page 156: ...er Channel or Freq Span is specified the X axis shows the Center Freq Channel and Frequency Span When Start or Stop Channel is specified the X axis shows the Start Freq Channel and Stop Freq Channel Change Channel Step Size Optional This setting allows you to use the arrows to increment the channel number by the specified value The Channel Step softkey appears only when it is valid Learn how to ma...

Page 157: ...ss Enter Ref Level Manually set the value of the reference line Enter a negative value by pressing Run Hold either before or after typing a value This can also change the RF Attenuation setting See Attenuation Control on page 159 Preamp Refer to Preamplifier Control Opt 235 on page 160 RF Atten Refer to Attenuation Control on page 159 More opens another set of scale softkeys Manually set Scale Typ...

Page 158: ...ired units setting Learn more in Manage Files on page 813 External Gain When using an external amplifier or attenuator the SA mode trace amplitude values can be offset to compensate for the effect of the external device This effectively moves the reference plane of the SA measurement port out to just beyond the external device For example when using an external preamp with gain of 10 dB enter this...

Page 159: ...d 2 Then RF Atten Auto Man Auto RF Attenuation is set by adjusting the acquisition As the acquisition is lowered for example from 10 dBm to 30 dBm the FieldFox assumes that you are looking at low level signals The RF Attenuation value is automatically lowered in 5 dB steps to allow low level signals to be viewed The RF Attenuation value is never automatically lowered below 5 dB Man RF Attenuation ...

Page 160: ...er into an amplifier causes it to no longer amplify in a linear manner When too much power goes into the FieldFox RF Input connector the amplifiers in the SA receiver compress and signal power will not be displayed accurately This can occur even if ADC Over Range is not displayed because devices other than the ADC such as the mixer might be compressed Increase the RF Attenuation value to prevent t...

Page 161: ...ace state is View For information refer to Trace Display States SA Mode on page 201 Pink Trace Current correction factor See below Learn how to set Y Axis Units on How to Set Y axis Units on page 158 Use a Band Power marker to measure total power over a range of frequencies Learn how in Band Interval Power Marker on page 214 How to select and edit corrections for Field Strength measurements The An...

Page 162: ...OFF Pink Trace Antenna Cable corrections This is a composite of all cable antenna corrections that are currently applied Available as a useful visual aid the zero dB level no net correction is mapped to appear at the 50 dBm on screen level Amp Corr Select Triaxial XYZ then choose one of the following Default Receiver side only antenna measurements Src Rcvr Split to work with non triaxial receiver ...

Page 163: ...e specified Storage Device Storage Device Choose from Internal USB SD Learn more about these selections in Set File Type and Select Device on page 810 When finished press Back to return to the previous menu Using the Antenna Cable Editor The Antenna Editor and the Cable Editor menus are very similar Both tables include header information and a Frequency Value table Figure 9 2 FieldFox Antenna Edit...

Page 164: ...ription Enter a description for the antenna or cable correction table This is NOT the filename used to save the file Antenna Factor Unit Determines whether Field Strength measurement Amplitude units will be available or not and how to convert between them Select None default setting if you just want standard Amplitude units with a simple dB offset supplied by the correction table This makes the co...

Page 165: ...isting gain Antenna Factor describes the dB value needed to accurately display a far field signal in terms that are in the units listed below When the antenna has low gain or low efficiency the dB value to be added is larger Antenna Factor Unit sets the type of antenna factor unit used in your measurement i e dB m or dB S m When one Freq Value pair is entered that correction value is applied to th...

Page 166: ... 807 Learn more about Antenna and Cable files below Optional Press Recall Antenna or Recall Cable to load an Antenna or Cable file from the specified Storage Device Storage Device Changes the device used to save or recall files Choose from Internal default setting USB must be connected or SD card This is a different setting from the Save Recall Storage Device setting About Antenna and Cable files ...

Page 167: ...et Reversal This feature requires N991xB and N995xB FieldFox Combination Analyzers to have Options 209 210 and 233 N993xB and N996xB Spectrum Analyzers to have Options 209 and 220 Source offset tracking is used to offset the Source frequency from the Receiver frequency by a fixed offset at every tune frequency This feature is used when the DUT contains a frequency translation device or mixer How t...

Page 168: ...his allows you to listen to one frequency while displaying a different range of frequencies The Tune Listen measurement alternates between normal SA sweeps for the display and performing audio demodulation at the Tune Frequency See the Listen Time setting for more information Figure 9 4 Tune Listen ON In the graphic above Tune Listen ON with Tune Frequency is indicated by a vertical bar highlighte...

Page 169: ...e modulation type to AM upper sideband Annotation AM USB Center Frequency displayed at the top of display See also TnL AM SSB Gain AM LSB Sets the modulation type to AM lower sideband Annotation AM LSB Center Frequency displayed at the top of display See also TnL AM SSB Gain See also How to select Analog Demod Metrics on page 173 TnL AM SSB Gain When you select AM USB or AM LSB softkeys the TnL AM...

Page 170: ...nter a value using the numeric keypad arrows or the rotary knob Then select a multiplier key Learn about multiplier abbreviations Multiplier Abbreviations on page 46 3 Using Mkr Tune Freq Create a normal marker at the frequency of interest Learn how in How to create Markers on page 726 a Press Mkr Tools b Then Mkr TuneFreq to change the Tune Frequency to that of the marker Listen Time While Tune L...

Page 171: ... perform only the normal SA sweeps select the following Press Meas Setup 4 Audio Demod ON OFF OFF Setting the Marker Counter Precision Softkey When AM Tune Listen FM narrow Tune Listen or FM wide Tune Listen are selected you can choose from the following Press Marker Peak Press Mkr Tools More Mkr Properties Counter Precision Sets the AM or FM Metric demodulated signal s marker precision 1 Hz 1 Hz ...

Page 172: ...M or FM signal can be heard through the internal speaker or through headphones using the 3 5 mm jack located on the FieldFox side panel The Analog Demod spectrum is displayed alongside the SA displayed trace This enables you to listen and display a carrier frequency and it s harmonics The Analog Demod measurement displays a normal SA sweeps for the display while performing audio demodulation at th...

Page 173: ...alog Demod Tune Listen Analog Demodulation Demod Type Then choose a demodulation metric type Select a setting based on the type of interfering signal you suspect is being broadcast This section contains the following How to select Analog Demod Metrics on page 173 How to make Analog Demodulation Metrics Settings on page 174 Setting the Alternate Frequency AF Freq Dist Softkeys on page 176 Setting t...

Page 174: ...r Power Carrier Freq Modulation Rate Tune Listen OFF Opens a menu of Tune Listen demod softkeys Tune Listen can be set when you are in Analog Demodulation mode so you can enable Tune Listen sweeps in between your Analog Demod sweeps To learn more about the Tune Listen softkey menu choices refer to Tune Listen AM FM on page 168 See also How to make Analog Demodulation Metrics Settings on page 174 H...

Page 175: ...the main metrics measurement For example in FM peak ON will include peak positive Peak and negative Peak frequency deviation metrics to appear Peak ON will also enable peak traces on the demodulation waveform and audio frequency spectrum Default OFF Demod Type Sets the demodulation type Choose from AM AM SSB FM FM Stereo RDS and PM Then press More opens a menu of softkeys Average Type Average Coun...

Page 176: ... BW 2 then choose AF RBW Sets the audio frequency AF resolution BW for the AM or FM demodulated signal Manual or Auto default Auto Setting the Audio Capture Playback Softkeys The FieldFox analog demodulation audio capture playback feature allows you to capture record the demodulated audio associated with an analog demodulation measurement AM DSB AM SSB FM FM Stereo or PM and save it as an audio fi...

Page 177: ...Default 1 Settable 1 to 10K Capture Time sets the capture time Default 100 ms Minimum Maximum capture times vary with other settings Stereo Channel When Demod Type FM Stereo RDS this softkey sets the type of audio to be captured and stored Choose single channel Mono L R Left L Right R and Difference L R Or choose two channel Stereo L R Default Mono L R Then Choose Then File Settings then Filename ...

Page 178: ...toff 300 000 Hz When the Lowpass filter is set to Custom sets the customized LPF 3 dB cutoff frequency for the lowpass filter Default 300 Hz Minimum 90 Hz Maximum 5 MHz None No lowpass filter is selected 300 Hz 5 Pole Butterworth LPF with 3 dB cutoff frequency of 300 Hz 3 kHz 5 Pole Butterworth LPF with 3 dB cutoff frequency of 3 kHz 15 kHz 5 Pole Butterworth LPF with 3 dB cutoff frequency of 15 k...

Page 179: ...sis T Sets the amount of de emphasis applied to the demodulated signal Setting the Marker Counter Gate Softkey When AM Metric or FM Metric are selected you can choose from the following Press Marker Peak Press Mkr Tools More Mkr Properties Counter Gate Sets the AM or FM Tune Listen demodulated signal s counter window time Minimum 1 ms and Maximum 2s default 100 ms The Counter Gate softkey is not a...

Page 180: ...80 Keysight N9938 90006 User s Guide SA Spectrum Analyzer Mode Option 233 Mixed Analyzers SA Mode Settings See also How to use Marker Functions on page 739 Figure 9 6 AM DSB Metrics Demodulation Waveform ...

Page 181: ...Keysight N9938 90006 User s Guide 181 SA Spectrum Analyzer Mode Option 233 Mixed Analyzers SA Mode Settings Figure 9 7 FM Metrics Demodulation Spectrum Figure 9 8 FM Metrics Demodulation Waveform ...

Page 182: ...182 Keysight N9938 90006 User s Guide SA Spectrum Analyzer Mode Option 233 Mixed Analyzers SA Mode Settings Figure 9 9 FM Metrics Counter Gate and FM Demodulation Waveform ...

Page 183: ...Keysight N9938 90006 User s Guide 183 SA Spectrum Analyzer Mode Option 233 Mixed Analyzers SA Mode Settings Figure 9 10 Audio Capture with Annotation Examples ...

Page 184: ... source OFF Turns OFF the internal source Source Mode Choose from the following Tracking The internal source frequency can track the SA receiver Center frequency Src is annotated on the screen CW The source is set to a CW frequency independent from the SA settings Srcw is annotated on the screen Coupled CW The source is set to a CW frequency but that frequency tracks the SA receiver Center Frequen...

Page 185: ...Individual Alignments on page 208 Press Cal 5 Then Amptd Alignment OFF Resolution Bandwidth Res BW In SA Mode the Res BW provides the ability to resolve or see closely spaced signals The narrower lower the Res BW the better the spectrum analyzer can resolve signals In addition as the Res BW is narrowed less noise is measured by the spectrum analyzer ADC and the noise floor on the display lowers as...

Page 186: ...the Video BW is set lower However as the Video BW is narrowed the sweep speed becomes slower How to set VBW 1 Press BW 2 2 Then Video BW 3 Then choose from the following Auto Couples Video BW to the ResBW in a 1 to 1 ratio Man Enter a Video BW value using the numeric keypad the arrows or the rotary knob Then press a multiplier if necessary or press Enter Setting VBW higher than RBW may smooth the ...

Page 187: ... the FieldFox uses two sweep types to process inputs signals The sweep type that is currently being used FFT or Step is displayed in the lower left corner of the FieldFox screen For a more comprehensive tutorial see Spectrum Analysis Basics App Note 150 at https www keysight com us en assets 7018 06714 application notes 595 2 0292 pdf How to set Sweep Type 1 Press BW 2 Advanced Sweep Type 2 Then c...

Page 188: ...ector on the FieldFox right side panel See the connector in Right Side Panel on page 42 The IF Out signal centered at approximately 33 75 MHz Narrow or 225 MHz with Wide path Option B04 or Option B10 is simply a down converted version of the RF Input signal that is present at the tuned frequency While outputting an IF signal the FieldFox stops performing the InstAlign process Therefore the amplitu...

Page 189: ...an Measurements on page 193 At least one sweep must be made in order to tune the FieldFox 1 Press BW 2 Advanced IF Output Use 2 Then choose from the following OFF The translated IF signal at the IF OUT connector is no longer guaranteed to be centered at 33 75 Narrow or 225 MHz Wide Requires Option B04 or B10 respectively Narrow The IF output signal has approximately 10 MHz bandwidth Wide Requires ...

Page 190: ...190 Keysight N9938 90006 User s Guide SA Spectrum Analyzer Mode Option 233 Mixed Analyzers SA Mode Settings Figure 9 12 SA Display Wide BW IF Out Center Frequency 4 GHz Requires Option B10 ...

Page 191: ...g in order to increase the probability of intercepting and viewing pulsed RF signals For example with SwpAcquisition set to Auto a pulsed GSM signal is NOT visible on the FieldFox screen as shown in a blue trace in the following image While watching the trace increase the SwpAcquisition value until the pulse spectrum rises out of the noise and reaches its maximum level Increasing the SwpAcquisitio...

Page 192: ...n is NOT an absolute measure of time but a relative number between 1 fastest and 5000 slowest sweep time The actual time that was required to complete a sweep is annotated on the screen 1 Press Sweep 3 2 Then SwpAcquisition Auto Man 3 Then choose from the following Auto Sweep is set to the fastest sweep possible with the current settings Man Enter a relative acquisition value between 1 and 5000 wh...

Page 193: ...rmational message Alert Very long sweep in progress is annotated on the screen for the duration of the sweep When the sweep time exceeds 4000 seconds about 1 hour Meas UNCAL is annotated on the screen Accuracy cannot be guaranteed InstAlign is always performed only at the beginning of the sweep regardless of the sweep time Learn more in How to Access Individual Alignments on page 208 Zero Span Mea...

Page 194: ...n Set Center to the frequency of interest then set Span to 0 Hz or select Zero Last Span Each key press toggles the frequency span between 0 Hz and the last specified frequency span How to change Sweep Time in Zero Span Press Sweep 3 Then Sweep Time Enter a value using the numeric keypad Sweep time is limited to 1000 seconds for N991xB 2xB 3xB models Then select a multiplier key Learn more in Mult...

Page 195: ... Slope setting below Periodic sets a trigger that repeats at the period rate entered Periodic trigger s phase can be altered by the Offset value The following two selections are similar in that they both trigger a sweep from a signal at the SA RF Input connector Experiment with both selections to find the best trigger type for your application Video A sweep is initiated when the displayed amplitud...

Page 196: ... or RF Burst trigger signal initiates a sweep 1 Press Sweep 3 Trigger Settings Trig Slope 2 Then choose from the following Pos Sweep is triggered by the rising positive edge of signal Neg Sweep is triggered by the falling negative edge of signal Trigger Delay After a valid trigger signal is received the sweep begins after the specified Trigger Delay time To see the rising edge of a repetitive sign...

Page 197: ...el The units depend on the Units setting Learn more in Scale and Units on page 157 RF Burst Trigger Level uses an alignment process which is performed in the background to set the detected signal level accuracy Learn more in RF Burst Amplitude Alignment on page 209 Video Trigger Level is a zero span signal level comparison Therefore the sweep will trigger close to the displayed level in zero span ...

Page 198: ...lly set the Trigger Delay by positioning the trigger event also known as T zero at any graticule along the X axis With T zero in the center of the screen you can zoom in and out by increasing or decreasing the sweep time Using the Trigger Position and Sweep Time settings is a quick and efficient way to examine artifacts of a pulse much easier than trying to set the Trigger Delay manually When Trig...

Page 199: ... the separation of these signals you can perform the following operations Measure any one of several signals separated in time for example you can separate the spectra of two radios time sharing a single frequency Measure the spectrum of a signal in one time slot of a TDMA system Exclude the spectrum of interfering signals such as periodic pulse edge transients that exist for only a limited time F...

Page 200: ...pan measurement is tuned to the center frequency of the non zero span measurement with about 5 MHz of bandwidth The Y axis scale is the same for both windows Gate View Time Set the X axis span for the non zero span window Enter a value using the numeric keypad the arrows or the rotary knob This value is annotated as Swp nn below the window FFT Gating OFF ON When ON the trigger type gate width and ...

Page 201: ...ake ONE sweep then Hold The Hold annotation changes to an arrow while the sweep occurs Single Automatically sets Continuous OFF and causes the SA to make ONE sweep then Hold Restart Resets the Average counter to 1 The Average counter also is used with MaxHold and MinHold Trace States Learn more in Average Count on page 203 Points Points is the number of measurements that are displayed along the X ...

Page 202: ...d Displays the minimum response of the input signal at each data point over multiple sweeps See also Average Count in Average Count on page 203 Average Each data point is averaged over multiple sweeps as set by the Average Count setting Learn more in Average Count on page 203 View Displays and then holds the last complete measurement trace on the screen This is similar to storing a trace in memory...

Page 203: ...hown on the left side of the FieldFox screen when selected Power Linear Averaging Best for measuring true power levels Used in Detection Average and Noise Marker Average Mathematically trace noise is 2 5 dB higher than when using Log Average PAvg is shown on the left side of the FieldFox screen when selected Voltage Averaging Converts the amplitudes to a magnitude unit before averaging e g Volts A...

Page 204: ...ent update is predetermined in the factory Until the update is performed annotation indicating questionable amplitude is displayed AMPTD When All Alignment is enabled by default the FieldFox performs an alignment process using the internal RF source Although some sweeps are delayed measurement results are never disturbed If the Independent Source tracking generator is enabled for your measurement ...

Page 205: ...Path Burst Trigger Alignment Channel Equalization Channel Scanner InstAlign Amplitude Alignment EMI Measurements InstAlign Amplitude Alignment WidePath Burst Trigger Alignment Channel Equalization ERTA InstAlign Amplitude Alignment IQA InstAlign Amplitude Alignment RF Burst Amplitude Alignment Channel Equalization Built in Power meter InstAlign Amplitude Alignment Default settings and recommended ...

Page 206: ... All Now softkey Each of the individual alignments could be in one of three states Off the alignment is not applied and is not updated automatically Auto default the alignment will be updated over time and temperature as needed no user interaction required Hold the unit holds the alignment values from the last alignment execution and does not execute another alignment automatically can be updated ...

Page 207: ... you would prefer to have manual control over the individual alignments then refer to the SA Individual Alignment Control setting in Preferences on page 770 in Chapter 31 System Settings The notification AMPTD displayed on screen means the InstAlign amplitude alignment or channel equalization is stale if its state is Hold and requires an update or it is in the OFF state This situation does not occ...

Page 208: ...llowing Auto Default setting Alignments are required and are performed automatically when necessary at times when interrupting the RF Output is deemed acceptable The alignment process is performed opportunistically when changes in settings require the measurement to stop momentarily and a significant time elapsed since the last alignment predetermined in the factory or the internal instrument temp...

Page 209: ...ieldFox screen when amplitude alignment is questionable This is always true when OFF and is conditionally true in Auto or Hold when the most recent alignment is deemed stale RF Burst Amplitude Alignment RF Burst alignment calibrates the circuitry to provide accurate external RF Burst triggering Learn more about RF Burst triggering in Triggering on page 195 When enabled by default the FieldFox perf...

Page 210: ...ings do NOT survive a Preset or Mode Preset 1 Press Cal 5 Individual Align ChanEq Alignment 2 Then choose from the following Auto Default setting SA measurement applications monitor changes in internal temperature and the time since last alignment update and trigger the need for a new update when the alignment becomes stale The alignment is deemed stale after a significant change in temperature or...

Page 211: ...p whenever the current channel equalization is deemed stale Detection Method In SA Mode the X axis is comprised of data points also known as buckets The number of data points is specified using the Points setting Learn more in Points on page 201 Regardless of how many data points are across the X axis each data point must represent what has occurred over some frequency range and time interval From...

Page 212: ...ed as noise does NOT rise and fall then Normal is equivalent to Positive Peak Positive Peak Pk Displays the maximum value of all the measurements in each bucket This setting ensures that no signal is missed However it is not a good representation of the random noise in each bucket Negative Peak NPk Displays the minimum value of all the measurements in each bucket Sample Smp Displays the center mea...

Page 213: ... actual measurement at a 1 Hz Res BW is extremely slow A Noise Marker unique to SA Mode mathematically calculates the noise measurement as though it were made using a 1 Hz bandwidth Several data points or buckets are averaged together to calculate the Noise Marker readout To accurately measure noise the Noise Marker should NOT be placed on or too close to a signal The distance from a signal depend...

Page 214: ...ment Channel Power CHP on page 218 When the frequency span is set to Zero span the marker is referred to as an Interval Band Marker because it averages power over a specific time interval In this case the range is specified as the Interval Span Learn more about Zero span measurements in Zero Span Measurements on page 193 If the Detection method and Averaging type are set to Auto when you enable a ...

Page 215: ... in the marker annotation area The marker does not move to the signal peak When Freq Counter is ON measurement sweeps are considerably slower How to use Frequency Counter 1 Press Marker 2 Press Normal Delta or Peak or select an existing marker to use as a frequency counter 3 Locate the marker somewhere on a CW signal It does NOT have to be on the peak 4 Then More Freq Count ON 5 With Freq Count ON...

Page 216: ...of the screen Learn more about Scale in Scale and Units on page 157 Audio Beep can be used with any marker type or function including Band Interval Power Learn more in Audio on page 775 How to use Audio Beep 1 Press Marker 2 Optionally press Marker 1 2 3 4 5 6 to select an existing marker to use with Audio Beep A marker will be created if one does not already exist 3 Then More Marker Function Audi...

Page 217: ...adio Standard then select Units CHAN Learn how to select a Radio Standard and channels in How to select a Radio Standard on page 154 When you first select a Radio Standard then select a Channel Measurement With Units FREQ selected the center frequency and span will ALWAYS change to the full frequency range of that standard Uplink and Downlink to allow for a quick scan of energy The X axis annotati...

Page 218: ... set to Average Detector is set to Average Count is set to 15 Any of these settings can be changed manually during a Channel measurement Learn more about these settings starting in Average Type on page 202 To change Averaging 1 Press Meas Setup 4 2 Then Average Enable ON OFF OFF effectively sets the Average Count to 1 3 Then Average Count 4 Enter a value between 1 and 10 000 using the numeric keyp...

Page 219: ...ame algorithm as Noise Marker Learn more about the Noise Marker in Noise Marker on page 213 How to select Channel Power 1 Press Measure 1 2 Then Channel Power When Channel Power is selected the following settings are maintained from a previous measurement Center Frequency Preamp ON OFF and RF Attenuation Integration Bandwidth When Channel Power is selected vertical posts appear on the display to m...

Page 220: ...er a value between 100 Hz and 5 GHz using the numeric keypad arrows or the rotary knob 3 Press Enter Other Channel Power Settings All relevant FieldFox settings are made automatically to ensure the highest accuracy such as ResBW VideoBW and sweep SwpAcquisition speed These and all other SA Mode settings can be changed manually in a Channel Power measurement Learn about Measurement Preset in Measur...

Page 221: ...s 3 Then Occupied BW When Occupied Bandwidth is selected the following settings are maintained from a previous measurement Center Frequency Preamp ON OFF and RF Attenuation Frequency Span Occupied BW is calculated from power that is measured over the entire displayed Frequency Span The frequency span can be entered using arbitrary frequencies or by using a Radio Standard in conjunction with channe...

Page 222: ...lly to ensure the highest accuracy such as ResBW VideoBW and sweep SwpAcquisition speed These and all other SA Mode settings can be changed manually in a Occupied Bandwidth measurement Learn about Measurement Preset in Measurement Preset on page 217 Learn about Averaging in Averaging on page 218 Adjacent Channel Power Ratio ACPR ACPR measures the power of a carrier channel and the power in its adj...

Page 223: ...PR graphical chart is always presented in dBm for the carrier and dBc dB below the carrier for the offsets This can NOT be changed Use the Meas Type setting next page to change how the data is presented in the table below the graph How to select ACPR Press Measure__1 Then Channel Measurements Then Adjacent Channel Power When ACPR is selected the following settings are maintained from a previous me...

Page 224: ...ob 3 Press Enter How to define adjacent Offset channels An offset represents a difference in center frequencies of the carrier channel and its adjacent channel to be measured The frequency range for each offset is specified with an Offset Freq and Integ BW Each offset that is created has a Lower carrier MINUS Offset Freq and Upper carrier PLUS Offset Freq set of frequencies 1 Press Meas Setup 4 Of...

Page 225: ...presented as dBc dB below the carrier PSD Ref Power Spectral Density Integrated carrier power is normalized to a 1 Hz density as dBm Hz using a similar algorithm as Noise Marker Learn more about the Noise Marker in Noise Marker on page 213 For both Meas Types choose the reference for the offset data 3 Press Ref Value to toggle between these settings Auto dB or dBc value is computed by subtracting ...

Page 226: ...o accurately measure a channel that has RRC weighting set the same value of RRC weighting as that used in the transmitter and receiver Figure 9 21 Channel power measurement with 22 RRC applied RRC Weighting is set and enabled automatically when included in a selected radio standard To set and enable RRC Weighting 1 Press Meas Setup 4 RRC Weighting ON OFF More RRC Alpha current setting 2 Enter a va...

Page 227: ...Antenna to a particular axis X Y or Z The manual control thus allows any SA Receiver measurement to sweep that axis just like any other antenna transducer however without license the imported corrections are not usable from the Apps But with license the SA provides for easy use of the imported XYZ corrections thus allowing presentation of correctly compensated FieldStrength measurements for 1 axis...

Page 228: ... EMF Setup Procedure on page 230 EMF Features EMF has the following features EMF Measurement Results Measure and display corrected field strength in RMS average power Antenna control over X Y and Z antenna factors downloaded via USB Pass Fail limit testing supported External PC not required EMF uses the following data formats Field Strength units dBµV m For use with E field signals dBµA m For use ...

Page 229: ...User s Guide 229 SA Spectrum Analyzer Mode Option 233 Mixed Analyzers How to Set Up EMF Settings Requires EMF Option 358 GPS Option 307 and SA Mode Option 233 Mixed Analyzers Figure 9 22 Example of EMF with Triaxial Antenna ...

Page 230: ...n this may take 5 seconds or so and vary with the Triaxial antenna This softkey is only active when Antenna Select is set to Tri Axial Then Antenna Select Tri Axial verify Triaxial is selected Default Manual When the USB antenna correction factors are imported EMF Option 358 couples many settings to ease setting up the EMF measurement e g Apply Corrections is enabled all X Y and Z antenna axes are...

Page 231: ...e switched between the three different antennas three dipoles and the resulting summation of the total power collected and averaged Alternatively you can select either of three axes to individually measure the field strength in the one direction c Else to manually set one of the triaxial antenna s three axes to individually measure the field strength in one direction i Press EMF Off EMF Axis Selec...

Page 232: ...ting when a compatible USB antenna s correction factors have been imported via the System softkeys Then verify the X axis Antenna Y axis Antenna and Z axis Antenna are all OFF These can each be enabled or disabled individually but for EMF measurements all three axes should be enabled i e Antenna Off the applications are setting the X Y Z Then Press Cable Off to open the cable correction softkeys m...

Page 233: ...asurements f Optional Example of editing X Y and Z axes manually Press X axis Antenna opens the X axis Antenna softkey menus Then choose one or more of the following X axis Antenna enable disable the X axis antenna factors default is coupled to other settings Edit Antenna to edit the current imported X factor if available Refer to Editing Antenna Correction Factors and Adding New Antenna Factors o...

Page 234: ...st the antenna axes when the antennas are to be moved physically and then the X Y and Z axes setting values are assigned Importing and selecting the X Y Z antenna factors 1 Press System Utilities EMF Antennas 2 Press Antenna Select Manual Default then 3 Verify you are measuring Channel Power refer to step 1 on page 230 then 4 Press Meas Setup 4 EMF Off then 5 Press EMF Axis Select Off to select an...

Page 235: ...active antenna measuring data Axis Y softkey behaves similarly after it is saved and Axis Z is pressed 12 Sum Channel Power Press Save Axis Result The Live Sum CHP value now displays the summed values of the 3 axes Other softkey choices are Restart Corrections Clear Saved Results and Save Traces Blank View Editing Antenna Correction Factors and Adding New Antenna Factors This section contains two ...

Page 236: ...ep for details on editing the antenna Settings table b Use the arrows the rotary knob or numeric keypad to select the table cell value to be edited i e the Frequency Interpolation value is not editable Then i Press Edit Antenna to edit your existing antenna factors or press New to add a a new antenna s factors or to write over your existing antenna s file i e Overwrite existing Antenna data is dis...

Page 237: ... GNSS GPS and GPS on page 784 Figure 9 24 Example Editing and Adding a New X axis antenna is shown Editing Cable Correction Factors and Adding New Cable Factors This section contains two procedures illustrating how to edit the Cable Factors settings table values 1 Selecting an cable softkey menu Press Scale Amptd More Corrections then choose one of these softkey menus If New is selected under the ...

Page 238: ... to a particular frequency Refer to next step for details on editing the cable Settings table b Use the arrows the rotary knob or numeric keypad to select the table cell value to be edited i e the Frequency Interpolation value is not editable Then Press Edit Cable to edit your existing cable loss data or press New to add a a new antenna s factors or to write over your existing antenna s file i e O...

Page 239: ...ed Analyzers Back To exit to previous softkey menu Press Done when finished editing to exit c Press Save Cable to save your changes See also Chapter File Saving Naming Options and then to Alpha Numeric Editing on page 778 For more information See also GNSS GPS and GPS on page 784 Figure 9 25 Example Editing and Adding a New X axis antenna is shown But the Cable Loss table is similar ...

Page 240: ...and relates them to the carrier power The integration bandwidth method is used to perform a data acquisition The reference channel integration bandwidth Meas BW is analyzed using the user defined resolution bandwidth Res BW which is much narrower than the channel bandwidth The measurement computes an average power of the channel or offset region over a specified number of data acquisitions automat...

Page 241: ...on 233 Mixed Analyzers Spectrum Emission Mask SEM SA Mode Only Spectrum Emission Mask Pass Fail A PASS indicates the displayed SEM is within the current boundaries specified A FAIL indicates the current signal fails with the specified parameters Figure 9 26 SEM Example ...

Page 242: ...gs are maintained from a previous measurement Center Frequency Preamp ON OFF and RF Attenuation Setting up the FieldFox for Spectrum Emission Mask SEM Measurement 1 Press Measure 1 Channel Measurements Spectrum Emission Mask 2 Press Meas Setup 4 then optionally select Averaging Enable disables averaging and sets the number of trace averages Default is OFF Meas Type Then select one of the following...

Page 243: ... Integrated bandwidth Ref Chan Span Sets the reference channel span usually set equal or greater than the Integ BW it is simply a way to reserve additional freq range to be measured for display presentation if that range is not overlapped by the offset regions The reference channel is always measured completely as specified but only the central part of the reference channel that is NOT overlapped ...

Page 244: ...nsider the unit being used dBm or dBm Hz depending on the Meas Type selected If Power Ref is left AUTO Default then its value will track the Meas Type and change units automatically Both fixed and Auto settings display the power reference value measured 3 Setting Center Frequency and Span Press Freq Dist then Center sets the center frequency SEM Auto Span Enables disables the SEM Auto Span Freq Sp...

Page 245: ...imit value hence creating a FLAT horizontal Limit Line segment But the Stop value can be manually set as well creating sloped Limit segments Abs Start Sets the start of an absolute limit line segment Abs Stop Sets the stop of an absolute limit line segment Rel Start Sets the amplitude limit at the start frequency of the offset relative to the reference power level Rel Stop Auto Sets the amplitude ...

Page 246: ...its There is only 1 Trace available and like the other Channel Measurements it is set to average Press Trace 6 then State sets the measurement state Refer to Trace Display States SA Mode on page 201 Default All Sets the SEM settings to default Chan Detector Sets the Reference Channel detector default Auto is Average to facilitate the Power Integration See also Detection Method on page 211 Offset D...

Page 247: ...to another computer That computer or another one will act as a SCPI controller and is required for actually controlling the streaming in particular setting up network configuration data and starting and stopping the streaming IMPORTANT IQ Streaming is used by configuring the desired setup and then starting the acquisition data stream In order to make measurement changes bandwidth center frequency ...

Page 248: ...her VITA49A or Decodio formats If locked to GPS will populate the timestamp applied to streamed data packets If not locked to GPS the system clock time is used to stamp the streamed data packets Refer to Chapter 31 System Settings and to Frequency Reference on page 777 General setup for IQ Streaming 1 Press Meas Setup 4 IQ Analysis Streaming 2 Then IQE SampRate Manual 1 25 MHz default when set to ...

Page 249: ...eldFox Handheld Analyzer SCPI Programming Guide on www keysight com Destination Host Destination Port default is 4991 Protocol Choose Vita or Decodio Samples per packet 5 Start Streaming Refer to the FieldFox Handheld Analyzer SCPI Programming Guide on www keysight com 6 When done press Exc to stop streaming or refer to the FieldFox Handheld Analyzer SCPI Programming Guide on www keysight com Or v...

Page 250: ...tch speed rate 1 Hz to 50 kHz Assume 600 Series 50ꭥ coaxial cable with 2 5 dB 100 feet 1 Press Measure 1 Channel Measurements Channel Power EIRP Off then choose from the following EIRP Meas OFF ON Enables and disables the EIRP measurement Rx Ant Gain Enter the receiver ant gain 100 db to 100 db default 0 dB For this example 30 dB Enter Dist to Ant Enter the distance between the receiving and trans...

Page 251: ...ure Center frequency Span Preamp and RF Attenuation Press Freq Dist Center 2 GHz Press Freq Span 3 MHz default Press Scale Amptd Preamp ON default OFF Press RF Atten Auto default Auto 3 Summary of EIRP setup per step 1 Press Rx Ant Gain For this example 30 dB Enter Press Dist to Ant For this example 100m default Press Rx Cable Loss For this example 2 5 dB Press Margin Comp 4 Start EIRP Press Resta...

Page 252: ...252 Keysight N9938 90006 User s Guide SA Spectrum Analyzer Mode Option 233 Mixed Analyzers Effective Isotropic Radiated Power EIRP SA Mode Only ...

Page 253: ...IN connector For a comprehensive RTSA mode tutorial see Understanding and Applying Probability of Intercept in Real time Spectrum Analysis App Note at https www keysight com us en assets 7018 04381 application notes 599 1 4317 pdf Figure 10 1 RTSA Display using Markers The graphic above shows an RTSA display of a Bluetooth signal using markers ...

Page 254: ...0006 User s Guide RTSA Real time Spectrum Analyzer Mode Option 350 Figure 10 2 The graphic above shows an RTSA display shows an RTSA display of an 80 MHz linear FM chirp with a center frequency of 1 GHz requires Option B10 ...

Page 255: ...W on page 265 Triggering on page 266 Single Continuous Restart Time Per Div on page 269 Points not user settable on page 270 Trace Display States RTSA on page 271 Average Count Show Density Blue and Red Percentage Limits on page 273 Average Count on page 274 Alignments on page 274 Detection Method on page 272 Display Line on page 274 Spectrogram Display RTSA Option on page 277 Record Playback RTSA...

Page 256: ...p frequencies Toggle between Zero and Last selected span Using Marker Center When you initially select I Q Analyzer Real time SA or some of the other spectrum settings such as center frequency a factory channel Equalization measurement is applied to the signal During channel equalization measurement the FieldFox displays a Start Channel Equalization Stopping channel equalization is not permitted S...

Page 257: ...screen shows the Start and Stop frequencies Optionally press More then CF Step then type a step size value using the numeric keypad then select a multiplier key Freq Annotation and one of the following Full Span the frequency span changes the instrument s full frequency span frequency span is model dependent Follow each of these when prompted by entering a value using the numeric keypad the arrows...

Page 258: ...nter Ref Level Manually set the value of the reference line Enter a negative value by pressing Run Hold either before or after typing a value This can also change the RF Attenuation setting See Attenuation Control on page 259 Ref Pos Manually set the position of the reference line Values must be between 0 top line and 10 bottom line Default position is zero top External Gain When using an external...

Page 259: ...l attenuation to protect the internal circuitry from being damaged The displayed power level is automatically adjusted for RF Attenuation As the attenuation value changes the displayed power level should NOT change How to set Attenuation Press Scale Amptd Then RF Atten Man Auto Auto RF Attenuation is set by adjusting the acquisition As the acquisition is lowered for example from 10 dBm to 40 dBm t...

Page 260: ... to the acquisition When the acquisition reaches a certain value the preamp is turned on and PA is shown to the left of the graticules on the display Check for Compressed Measurements Compression occurs when too much power into an amplifier causes it to no longer amplify in a linear manner When too much power goes into the FieldFox RF Input connector the amplifiers in the RTSA receiver compress an...

Page 261: ...isplayed is a real time spectrum with a spectrogram bitmap Spectrogram views are valuable in capturing signals that include both time and frequency variations Refer to Figure 10 5 on page 263 Real time Spectrum The signal is displayed as a real time spectrum Use real time spectrogram to quickly display measurements Refer to Figure 10 6 on page 264 In all three spectrum measurements there are four ...

Page 262: ...262 Keysight N9938 90006 User s Guide RTSA Real time Spectrum Analyzer Mode Option 350 RTSA Mode Settings Figure 10 3 Density Spectrum Histogram FM Signal with 1 MHz FM Deviation 400 Hz FM Rate ...

Page 263: ...de 263 RTSA Real time Spectrum Analyzer Mode Option 350 RTSA Mode Settings Figure 10 4 Density Spectrum Histogram with 2 Pulses 100 MHz Span Blue color indicates pulse that occurs less frequently Figure 10 5 Spectrogram 100 MHz Span ...

Page 264: ...264 Keysight N9938 90006 User s Guide RTSA Real time Spectrum Analyzer Mode Option 350 RTSA Mode Settings Figure 10 6 Real time Spectrum ...

Page 265: ... as a result This allows low level signals to be seen and measured How to set Res BW Press BW 2 Then Res BW Then choose from the following Auto Res BW is coupled to the frequency span As the frequency span is narrowed the Res BW is also narrowed providing increased ability to resolve signals To change this setting from Man to Auto press Res BW twice When in full span ADC dither raises the noise fl...

Page 266: ...er Settings Then Trig Type Then choose from the following Free Run Triggering is provided by the FieldFox internal circuitry A new sweep begins when the previous sweep ends External A sweep is triggered on an external TTL signal at the Ref In Trig In connector on the FieldFox top panel Choose to trigger on the rising slope at about 1 7 V or on the falling slope at about 1 0 V using the Trigger Slo...

Page 267: ...eats at the period rate entered Periodic trigger s phase can be altered by the Offset value Then choose from the following Period Enter a value for the trigger to repeat 100 ns to 400 ms Offset Enter a offset value to offset the phase of the periodic trigger 100 ms to 100 ms Reset Offset Display Resets Offset to default 0 000000 s Trigger Slope Trigger Slope determines which edge of an External Vi...

Page 268: ... can cause broadband e g pulsed signal energy to display at lower power levels than the peak power levels of the time domain signal Therefore you may need to the set trigger level higher than the displayed spectral level Press Sweep 3 Then Trigger Settings Then Trig Level Enter a value using the numeric keypad the arrows or the rotary knob 210 to 30 dBm Then select a multiplier key or press Enter ...

Page 269: ...ure Also you can press Trig Hold Off OFF Trigger Settings Annotation Trigger settings are annotated on the FieldFox screen as shown in the following figure Trig Type VidT AutoTrigger a Pos Slope Horizontal arrow Trig Level green horizontal graticule at 35 dBm Single Continuous Restart Time Per Div This setting determines whether the FieldFox measures continuously or only once each time the Single ...

Page 270: ...inuous sweep is OFF it also causes Average Count n sweeps to occur if any Trace State is set to RMS Average MinHold or MaxHold This softkey is also used to clear the Spectrogram display Learn more in Average Count on page 274 Acq Time Use the Acq Time setting to adjust acquisition time interval for each trace update in Density or Real time Spectrum measurements How to set Acq Time Press Sweep 3 Th...

Page 271: ...lowing Trace States Clr Wr W Clear Write Displays the actual measured data for each sweep MaxHold M Displays the maximum response of the input signal at each data point over multiple sweeps See also Average Count in Average Count on page 274 MinHold m Displays the minimum response of the input signal at each data point over multiple sweeps See also Average Count in Average Count on page 274 RMS Av...

Page 272: ...led on the left edge of the screen A corresponding letter appears below the corresponding Trace number selected For example N means that Normal was the selected detector Press Trace_6 Then Detector Then choose from the following Auto Displays the most appropriate Detection method based on other settings Normal N Provides a better visual display of random noise than Positive peak and avoids the mis...

Page 273: ...nsity Spectrum Only Changes the percentage of the trace that has a blue limit 0 05 to 100 default is 0 05 This setting is coupled to the color bar in the upper right corner of the FieldFox display Red Limit Density Spectrum Only Changes the percentage of the trace that has a blue limit 0 05 to 100 default is 100 This setting is coupled to the color bar in the upper right corner of the FieldFox dis...

Page 274: ...of these Trace States RMS Average MaxHold or MinHold when Sweep 3 Continuous is set to OFF press Restart to reset the sweep count to 1 perform n sweeps then return to Hold How to set Average Count Press Meas Setup 4 Then Average Count Enter a value from 1 to 10 000 using the numeric keypad the arrows or the rotary knob Press Enter Alignments The RTSA mode requires all three alignment types amplitu...

Page 275: ... Audio Beep feature emits a repetitive beep sound which varies in tone pitch and repetition rate to indicate the relative power level of the active marker The highest tone pitch and fastest beep rate occurs when the marker Y axis position is at the top of the display Conversely the lowest pitch and repetition rate occurs at the bottom of the display Therefore it is important to scale the signals t...

Page 276: ...marker to use with Audio Beep A marker will be created if one does not already exist 3 Then More Audio Beep ON OFF Audio Beep does NOT beep when the FieldFox is in Hold mode While Audio Beep is ON press Marker 1 2 3 4 5 6 to toggle Audio Beep through the existing markers To set FieldFox speaker volume control press System then Volume Learn more in Audio on page 775 ...

Page 277: ...draws the most recent trace record at the bottom of the stack of previously drawn trace records Drawing the live trace on the display is optional Figure 10 8 Spectrogram display Overlay view How to select Spectrogram Press Meas 1 Then Spectrogram How to modify the Spectrogram You can change how the spectrogram is displayed relative to the data trace This setting affects the total number of trace r...

Page 278: ...o the power levels that you expect to measure The Blue limit must always be less than the Red limit For RTSA Mode Press Meas Setup 4 Then choose from the following Red Limit Using the arrows rotary knob or keypad select the HIGHEST power level that you expect to measure This power level and those measured higher than this level appear Red Blue Limit Using the arrows rotary knob or keypad select th...

Page 279: ...or Mode Preset an Instrument State is recalled or when Mode is changed from RTSA Each session is saved as a folder containing a set of files on the specified storage device How long can a recording session last There are many variables that determine the possible length of a recording session But one key variable is the amount of available memory When a session is opened or a new session is initia...

Page 280: ...ce is saved as a record RangeTraces AllTraces All active traces are recorded 4 Optional Clear All Records Empties that session of recorded traces Learn more in Manage Sessions on page 286 FieldFox Setting Changes during Record and Playback During Recording When any of the following State settings are changed during recording the State counter is incremented About State and User Tags on page 281 an...

Page 281: ... cannot be modified No measurement post processing is allowed and no Density or Spectrogram information can be recovered This is because RTSA s Real time Spectrum and Density displays are not derived from the trace data but instead require independent high speed hardware acquisition Record Playback Exceptions Markers can be activated and moved to help analyze recorded data However marker position ...

Page 282: ...h each new session The name can be changed using Manage Sessions Learn more in Manage Sessions on page 286 92 95 is the current and total trace number currently trace is 92 of 95 total traces state 4 5 is the current and total state tag or user tag number 4 of 5 total tags Asterisk indicates that a state has changed Pound indicates that a User Tag has been inserted Sep 22 is the date and time of r...

Page 283: ... State and User Tags in About State and User Tags on page 281 How to Playback a Session 1 Press Trace 6 2 If the session is already open skip the following step Otherwise 3 Press Record Playback Setup Press Recall Session Then select a session to playback and press Open 4 Press Recorder Player 5 Press Play PLAY is displayed in the left of screen graticules during playback When the end of the recor...

Page 284: ...all an existing session 3 Press Recording Configuration 4 Then choose from the following Record Time Sets the amount of time to record traces Default is MAX which is to record indefinitely Enter a value between 1s and 1 Ms million seconds using the numeric keypad arrows or the rotary knob When set a timer appears during recording in the lower left corner which counts DOWN from the specified time R...

Page 285: ...ngs Record Source Figure 10 9 FieldFox RTSA Mode Data Flow and Record Playback Data Points RTSA Data Recording Data is recorded at the trace state processing block Data can be recorded from Traces 1 2 3 or 4 which includes the trace state Max Hold Min Hold and so forth Data is ALWAYS played back into the same trace number that was recorded If four traces were active during the recording but only o...

Page 286: ...r the rotary knob After using the keypad select a multiplier key Learn about multiplier abbreviations 5 Press Enter Manage Sessions 1 Press Trace 6 Record Playback 2 Press Record Playback Setup The following selections are available ONLY when a session is NOT open 3 Press Storage Device to select the media which stores the sessions to be managed This is a different setting from the Save Recall Sto...

Page 287: ...vented Copy All Copies ALL of the listed sessions to a different storage device or the same storage device with Copy n _ appended to the beginning of the names so that duplication is prevented Delete All Deletes ALL of the listed sessions Record Playback Example RTSA Mode Only The following Interval Recording example shows how you can record spectral activity over a longer period of time with less...

Page 288: ...288 Keysight N9938 90006 User s Guide RTSA Real time Spectrum Analyzer Mode Option 350 Record Playback RTSA Option ...

Page 289: ...installed Figure 11 1 IQ Analyzer IQA Display LTE TDD signal captured using the FieldFox s I Q analyzer IMPORTANT 85571A 028 28 GHz 5G Phased Array Antenna accessories not suitable for use in wet locations The FieldFox can be used with an OML frequency extender Refer to Utilities on page 762 the B Series FieldFox Configuration Guide 5992 3701EN and to Contacting Keysight on page 5 ...

Page 290: ...938 90006 User s Guide IQ Analyzer IQA Option 351 Figure 11 2 IQ Analyzer IQA Display Window Shape Flat Top spur free 1 GHz center frequency span 100 MHz captured using the FieldFox s I Q analyzer Requires Option B10 ...

Page 291: ...on page 310 Band Span Marker Spectrum Only on page 311 Interval Span Marker Waveform Only on page 311 Coupled Markers Waveform Only on page 311 Continuous Peak Search Marker on page 313 Alignments on page 314 Trace Display States IQA Mode on page 314 How to display the Trace States on page 314 Other Features Available on page 316 Constellation and Frame Summary IQ Analysis Requires Option 351 IQ A...

Page 292: ...ide IQ Analyzer IQA Option 351 See Also Why and When to Calibrate on page 126 All about Markers on page 726 All about Limit Lines on page 741 All about Trace Math on page 750 Chapter 30 Data Analysis Features Chapter 32 File Management ...

Page 293: ...urement are based on the same I Q acquisition The following acquisition parameters are automatically calculated to satisfy these requirements 1 RBW and IF BW specified in Spectrum measurement BW BW 2 menu 2 Start time and Stop time specified in Waveform measurement Sweep Sweep 3 menu and IF BW specified in Waveform measurement BW BW 2 menu 3 I Q signal capture related parameters specified in the M...

Page 294: ...a File on page 295 1 Press Preset then Mode Preset Factory 2 Press Measure 1 then choose from the following Spectrum Freq Domain Default Selects frequency spectrum as the current displayed measurement Waveform then choose one of the following RF Envelope Selects log RF envelope in time domain default IQ Waveform Selects linear Real and imaginary I Q waveform values User Defined Selects a default u...

Page 295: ...menu to set the file choices File Count File count can be set to Single or 1 all data saved into a single file for the current displayed data or Multiple When using Multiple as the file count the user can enter the number of files to save and the FieldFox is auto coupled to Continuous acquisition mode and to Multiple capture and all data is saved to either an external SD card or USB storage device...

Page 296: ...gement on page 803 default IQDataFile Back Returns to the previous softkey menu Capture Settings then choose one of the following Capture Time Sets the length of the I Q trace capture time default 100 μs range 80 ns to dynamic i e Maximum capture time is 1 07374s which is associated with a sample rate of 125 MHz Sample Rate Sets the I Q data sample rate value default 125 MHz maximum 125 MHz coupli...

Page 297: ...hh mm ss ffff csv If you press Stop before the 200 I Q data files have been saved the FieldFox stops interrupts the multiple I Q data file saving at the number of the current file So if you press Stop on file number 175 the saving process stops If file number 175 has not been saved it is deleted But I Q data files 1 through 174 that have been saved prior to pressing Stop are still saved for refere...

Page 298: ... length of the complex I Q data points I Q pairs vector that is used for spectrum analysis expressed in the number of samples Couplings In Auto this setting is directly coupled to the Res BW and to Span Minimum 8 Maximum 524 288 Where each FFT length point is equal to 1 I and 1 Q point So 237 is equal to 237 I and 237 Q points Adjusting the Bandwidth Settings on page 298 Changing between the Conti...

Page 299: ...r a three term cosine window Blackman Harris This is the four term Blackman Harris window This has the minimum side lobe level for a four term cosine window with 60 dB decade roll off Gaussian Top This is a five term cosine window that resembles a Gaussian window Flat 4 This is a four term flat top window Flat Top default This is the five term flat top window Flat 6 This is a six term flat top win...

Page 300: ...inuous acquisitions and Hold When Continuous is OFF each Run Hold or Single press causes the application to make one acquisition Restart When pressed Restart causes the FieldFox to restart trace averaging at count of 1 When in Single sweep mode the IQA will perform a complete set of averages before returning to the hold state K B 120 dB This is a Kaiser Bessel window whose maximum side lobe level ...

Page 301: ...he maximum time domain display length is 524 288 points Time Domain Display Length pts Sample Rate pts s x Stop Time s Start Time s 1 Where pts points s seconds Stop Time Waveform only Sets the stop time for the waveform display default 100 μs minimum 0s maximum dynamic In Waveform mode Setting the Start and stop time enables you to display a subset of the data on the display in order to speed up ...

Page 302: ...ins when the previous acquisition ends External An acquisition is triggered on an external TTL signal at the Ref In Trig In connector on the FieldFox top panel Choose to trigger on the rising slope at about 1 7 V or on the falling slope at about 1 0 V using the Trigger Slope setting below Video An acquisition is initiated when the displayed amplitude of an incoming signal crosses the settable Trig...

Page 303: ...lowing Average Type Opens a menu of averaging softkeys Then select one of the following Power Linear Averaging Best for measuring true power levels Used in Noise Marker Average Mathematically trace noise is 2 5 dB higher than when using Log Average PAvg annotation is displayed Log Averaging default Best for displaying Trace Averaging Also known as video averaging LgAvg annotation is displayed Volt...

Page 304: ... traces of the data result are displayed and the trace data type Clr Wr MaxHold MinHold Average View or Blank that are displayed for each measurement Press Trace 6 Then choose from the following Window 1 2 3 4 Changes the selected window default 1 Then select one of the following Win State ON OFF Enables or disables the current Window 1 2 3 or 4 selected by the Window 1 2 3 4 softkey default Windo...

Page 305: ...pectrum Only Sets the frequency span of the measurement trace The analyzer s digital IF bandwidth is always equal to this value Changing the span causes the IF bandwidth and the sample rate to change automatically Span IF bandwidth sample rate 1 25 IF bandwidth Res BW Span 50 if resolution bandwidth Auto Default 100 MHz minimum 10 Hz maximum 120 MHz Adjusting the Scale and Amplitude Settings Enabl...

Page 306: ...urrent Unit selection Y axis graticules show percent of acquisition below or above the reference line Spectrum Y axis graticules show voltage V RF Envelope Manually set Scale Unit Acquisition and Reference Position Autoscale Automatically adjusts the Y axis to comfortably fit the Minimum and Maximum amplitude of the trace on the screen Also optimizes the FieldFox s signal level at the mixer and ad...

Page 307: ...ry from being damaged The displayed power level is automatically adjusted for RF Attenuation As the attenuation value changes the displayed power level should NOT change How to set Attenuation Press Scale Amptd Then RF Atten Auto Man Auto RF Attenuation is set by adjusting the input power level As the acquisition is lowered for example from 10 dBm to 40 dBm the FieldFox assumes that you are lookin...

Page 308: ...ed for the increase in system gain How to control the Preamp By default the preamp is OFF Press Scale Amptd Then More Then Preamp Off The displayed setting is the current setting When ON PA is shown to the left of the graticules on the display default OFF When OFF nothing is displayed in the left graticules When Auto is selected the preamp setting is determined by the RF attenuation and to the inp...

Page 309: ...the Noise Marker until consistent measurements are displayed in adjacent data points With a Noise Marker present the Res BW can be changed and the displayed noise floor will also change but the Noise Marker readout will remain about the same IMPORTANT When using I Q markers it is important to either be in Single acquisition mode or for Continuous acquisition mode to set the measurement in advance ...

Page 310: ...annel power measurement see SA chapter Channel Power CHP on page 218 When the IQA is set to a waveform measurement the marker is referred to as an Interval Marker because it averages power over a specific time interval In this case the range is specified as the Interval Span How to measure Band Interval Power with a marker Press Marker to create or select a Normal or Delta marker to use to measure...

Page 311: ...n press More Then Marker Function Band Int Power Enables or disables the Band Interval Power marker default 5 of the start time stop time minimum 1 ns maximum 10s Coupled Markers Waveform Only When a Coupled marker is enabled in a window on the FieldFox the current active marker in that window is enabled as the reference coupled marker on the current trace and the x axis value of any other active ...

Page 312: ...mal 5 Press Esc 6 Repeat steps 3 through 5 while selecting the other measurement windows and markers Real using marker 2 and Imaginary using marker 3 7 Press Marker More Coupled Markers ON 8 Press Marker and use the arrows or the rotary knob to move the coupled markers along the traces in Window 2 Waveform Window 3 Real and Window 4 Imaginary Figure 11 3 IQ Analyzer IQA Display Coupled markers wit...

Page 313: ...page 726 Summary Cont Peak Search Enables or disables the continuous peak search The rules for finding the peak are exactly the same as for Peak Search including the use of peak criteria rules How to measure with the Continuous Peak Search marker Press Mkr Tools to create or select a Normal or Delta marker to use the Continuous Peak Search marker Then press More RF Spectrum Only Then press Mkr Pro...

Page 314: ...d in the following colors Trace 1 Yellow Trace 2 Blue Trace 3 Orange Trace 4 Green Then State current setting Then choose from the following Trace States Clr Wr Clear Write Displays the actual measured data for each acquisition MaxHold Displays the maximum response of the input signal at each data point over multiple acquisitions See also Average Count in Adjusting the Measurement Setup Settings o...

Page 315: ...ons See also Average Count in Adjusting the Measurement Setup Settings on page 303 Average Each data point is averaged over multiple acquisitions as set by the Average Count setting Learn more in Adjusting the Measurement Setup Settings on page 303 View Displays and then holds the last complete measurement trace on the screen This is similar to storing a trace in memory Blank Displays no trace ...

Page 316: ...tures Available External Gain Refer to refer to the SA chapter s section External Gain on page 158 Limit Lines For information on using Limit Lines refer to All about Limit Lines on page 741 Display Lines For information on using Limit Lines refer to the SA chapter s section Display Line on page 212 ...

Page 317: ...e stabilization network LISN conducted emissions testing Transient limiter conducted emissions testing Calibrated antenna radiated emissions testing Signal generator e g EXG MXG Set of antennas Set of near field probes e g Keysight N9311X Series of antennas and field probes EMI Option 361 measures radiated and conducted emissions With EMI you can measure the unintentional generation propagation an...

Page 318: ...ge 322 Scale and Units on page 324 CISPR International Special Committee on Radio Interference Control on page 325 Resolution Bandwidth Res BW on page 330 Single Continuous Restart on page 331 Points on page 332 Trace Display States EMI Mode on page 332 Detection Method on page 334 Input Trace Input for APD Measurements on page 335 About Electromagnetic Interference EMI Measurements on page 337 EM...

Page 319: ...age 318 see EMI Measurements on page 318 Preamplifier Control Opt 235 on page 330 Resolution Bandwidth Res BW on page 323 see EMI Measurements Single Continuous Restart on page 324 see EMI Measurements on page 318 Points on page 325 see EMI Measurements on page 318 Trace Display States EMI Mode on page 325 see EMI Measurements on page 318 Trace Averaging on page 334 Alignments on page 334 Detectio...

Page 320: ... Corrections SA How to select and edit corrections for Field Strength measurements on page 161 Preamp Control SA Preamplifier Control Opt 235 on page 160 Source Tracking Offset and Offset Reversal SA Source Tracking Offset and Offset Reversal on page 167 Independent Source Tracking Generator SA Independent Source Tracking Generator on page 184 Scale Settings SA and Data Analysis Scale and Units on...

Page 321: ...nce Electromagnetic Interference Features EMI Option 361 Amplitude Probability Distribution APD Statistics both CCDF and Histogram Selectable CISPR bands A B C D E Fast SA Scan for quick setup check Frequency range coupled to CISPR bands Logarithmic frequency axis 200 Hz 9 kHz 120 kHz 6 dB resolution bandwidths and 1 MHz impulse bandwidth auto coupled to CISPR bands EMI Detector settings selectabl...

Page 322: ...cies are dependent on the CISPR band selected The frequency range of the measurement can be changed using the following methods Set Center and Span frequencies Frequency Span varies with instrument model Set Start and Stop frequencies Using Marker Center When you initially select EMI I Q Analyzer Real time SA or some of the other spectrum settings such as center frequency a factory channel Equaliz...

Page 323: ...e screen shows the Start and Stop frequencies Start and Stop are not active choices for CISPR Zero Scan i e for CISPR Band Scan and CISPR Zero Scan ZSpan in the lower right of the display indicates you are at the span limit Zero Last Span For EMI mode which defaults to log sweep this softkey toggles between log FFT previous screen and start stop frequencies and linear Time in zero Span Optionally ...

Page 324: ...hese when prompted by entering a value using the numeric keypad the arrows or the rotary knob When using the arrows press Enter The increment setting of the arrows is based on the current span After using the keypad select a multiplier key Learn more in Chapter 2 Preparing for Initial Use of Your New FieldFox and Multiplier Abbreviations on page 46 Scale and Units Learn more refer to Scale and Uni...

Page 325: ...5 on page 329 This section contains How to Set the EMI Measurement Settings Fast SA Scan CISPR Band Scan CISPR Zoom Scan and APD Statistics on page 325 How to set a CISPR Band on page 327 Learn more see How to set the EMI Traces on page 332 How to Set the EMI Measurement Settings Fast SA Scan CISPR Band Scan CISPR Zoom Scan and APD Statistics Screen defaults to Log sweep but you can toggle using F...

Page 326: ...eting a specific RF frequency within the current CISPR band i e A B C D E Individual trace annotation is displayed for the three traces P Q and A and ZSpan is displayed in the lower right side of the display See also How to set the EMI Traces on page 332 APD Statistics Sets a measurement that evaluates pulses statistically APD statistics is essentially a Zero Span measurement of the Center Frequen...

Page 327: ...race replacing Detector on the Trace menu APD annotation is displayed on the left side when enabled See also Input Trace Input for APD Measurements on page 335 and How to set the EMI Traces on page 332 How to set a CISPR Band By default the preamp is OFF Press Measure 1 CISPR Band then choose A 9 kHz to 150 kHz B 150 kHz to 30 MHz C 30 MHz to 300 MHz Default D 300 MHz to 1 GHz E 1 GHz to 18 GHz Le...

Page 328: ...90006 User s Guide Electromagnetic Interference EMI Measurements Option 361 EMI Measurements Mode Settings Figure 12 2 CISPR Band C Zoom Example 1 Response to Pulse Figure 12 3 CISPR Band C Example 2 Response to CW Signal ...

Page 329: ...t N9938 90006 User s Guide 329 Electromagnetic Interference EMI Measurements Option 361 EMI Measurements Mode Settings Figure 12 4 APD Statistics Example 1 Pulse 5µS 1mS Figure 12 5 APD Statistics Example 2 CW ...

Page 330: ...s CISPR band StartFreq limited to 30000000 and CISPR band StopFreq limited to 300000000 CISPR Banda EMI 6 dB Resolution Bandwidthd CISPR Band Scan Maximum Span Valueb a c CISPR Zoom Scan Minimum Span Valued e A 9 kHz to 150 kHz 200 Hz 3 735 MHz 19 6 kHz B 150 kHz to 30 MHz 9 kHz 168 1 MHz 882 kHz C 30 MHz to 300 MHz 120 kHz 2 243 GHz 11 76 MHz D 300 MHz to 1 GHz 120 kHz 2 243 GHz 11 76 MHz E 1 GHz...

Page 331: ...e States Learn more in on page 334 c The 75001 point limit is put in place to keep the mode from trying to build traces that are any bigger than neces sary Basically enough to cover CISPR Band E 1 GHz to 18 GHz with its 1 MHz bandwidth plus a little extra mar gin This same point limit 75001 is applied to the other resolution bandwidths Res BW and also to the other CISPR Band Scan Maximum Span Valu...

Page 332: ...9 and then Points on page 201 Trace Display States EMI Mode The behavior of EMI mode is similar to SA mode This section describes the softkeys that have similar but also different behaviors than SA mode Learn more refer to Chapter 9 SA Spectrum Analyzer Mode Option 233 Mixed Analyzers See also Marker Trace IQA and SA Mode on page 730 How to display the Trace States Press Trace 6 Default All is mea...

Page 333: ...s displayed This softkey is inactive when APD Statics is ON QuasiPeak T2 Enable Disable trace 2 to display quasi Peak data that weighs each component based on its repetition rate the faster repetition rate the higher the weight given to that component Default on Q annotation is displayed This softkey is inactive when APD Statics is ON and or CISPR Band E is selected EMIAverage T3 Enable Disable tr...

Page 334: ...per trace e g up to three detectors and three traces simultaneously Learn more refer to Trace Display States EMI Mode on page 332 APD Statistics uses trace inputs in lieu of detection Learn more refer to Input Trace Input for APD Measurements on page 335 How to set Detection Method The current Detection method for each trace is labeled on the left edge of the screen A corresponding letter appears ...

Page 335: ...is not a good representation of the random noise in each bucket The following softkeys are only available when the CISPR Band softkey is set to CISPR Band Scan scan or CISPR Band Zoom Scan Quasi Peak Q Displays the quasi peak response as defined by CISPR 16 EMI Average A Displays the Root Mean Squared RMS average power of all the EMI measurements in each bucket This is the preferred method when ma...

Page 336: ...336 Keysight N9938 90006 User s Guide Electromagnetic Interference EMI Measurements Option 361 EMI Measurements Mode Settings Histogram Displays the power levels detected over the APD Dwell Time ...

Page 337: ...tity also changes proportionally since every FFT spectral sample measured undergoes detection by the FieldFox firmware and becomes part of the trace Maximum points 75001 Learn more see CISPR International Special Committee on Radio Interference Control on page 325 When selected CISPR Band and Zoom Scan measurements use one of the 5 CISPR band frequency ranges to set the frequency range Start and S...

Page 338: ...ram CCDF traces displayed Center frequency active with APD Statistics Selectable CISPR Bands A B C D or E Positive Peak trace active with APD Statistics OFF Quasi Peak trace active with APD Statistics OFF EMI Average trace active with APD Statistics OFF 200 Hz 9 kHz 120 kHz 6 dB resolution bandwidths and 1 MHz impulse bandwidth Frequency bands can be coupled to CISPR bands Logarithmic frequency ax...

Page 339: ... Band Scan these traces become active and begin sweeping Optional for this example press PosPeak T1 QuasiPeak T2 or EmiAverage T3 to enable disable each detector trace default all on Learn more see How to set the EMI Traces on page 332 4 Setting the EMI detectors for each trace For this example press CISPR Band C 30 300 MHz default Learn more see How to set a CISPR Band on page 327 5 Setting the L...

Page 340: ...escription of some of the terms used in the FieldFox s EMI mode Table 12 1 EMI Abbreviations and Descriptions Abbreviation Description APD Statistics Amplitude Probability Distribution Statistics Evaluates pulses statistically Measurement done in zero span at the specified center frequency with a specific APD dB resolution bandwidth CCDF Complementary Cumulative Density Function The probability of...

Page 341: ...r radio access technology The FieldFox OTA measurements support LTE FDD Option 370 LTE TDD Option 371 Verizon 5G TF Option 377 and 5G NR Option 378 over the air demodulation for single or multiple component carriers CCs and multiple cell towers for each CC Additionally 5G NR EVM Conducted provides EVM measurement capabilities for conducted signals The FieldFox display can be configured to show dat...

Page 342: ...tings on page 359 OTA Setup Procedure on page 359 Optional Using RTSA to verify the signal quality Requires Option 350 and Preamp Option 235 on page 377 How to Define a Cell or Cell s and Use OTA on page 378 How to Set Up EMF Mode Settings Requires EMF Option 358 and 5G NR Option 378 on page 394 How to Use Data Logging OTA Options 370 372 377 and 378 on page 401 Screen Annotation on page 401 How t...

Page 343: ...r the Air Measurements OTA LTE FDD Option 370 LTE TDD Option 371 5G TF Option 377 5G NR 5G NR EVM Conducted Option 378 See Also Why and When to Calibrate on page 126 Chapter 31 System Settings Changing display colors Chapter 32 File Management ...

Page 344: ...ort Cells component carriers CCs Frequency RSRP RSRQ RSSI PSS SSS and SINR scan results displayed by low to high or high to low or Auto no order is involved 5G NR Sort Cells component carriers CCs Frequency RSRP RSRQ RSSI SINR PSS SSS DMRS Freq Error SSB Index and Time Offset us scan results displayed by low to high or high to low or Auto no order is involved 5G TF Sort Carrier Info PSS SSS Sync C...

Page 345: ...chronization signal measurements Single acquisition multiple simultaneous measurements Measure CC Cell IDs and KPI s for multiple cells SSB Beam index a When multiple component carriers are selected the results of the component carrier CC with the highest power is displayed b LTE FDD LTE TDD and 5G NR can measure and display multiple cells 5G TF and 5G NR EVM Conducted only have the ability to mea...

Page 346: ...nal Received Power dBm RSRQ Reference Signal Received Quality dB RSSI Received Signal Strength Indicator dBm PSS Primary Synchronization Signal dBm SSS Secondary Synchronization Signal dBm SINR Signal to Interference Noise Ratio dB Frequency error Hz Refer to step 11 in the OTA Setup Procedure on page 359 Display Types User can set up and display 1 2 3 or 4 simultaneous measurements of key perform...

Page 347: ...wer bar graph of selectable cell scan result metric with adjustable color heat amplitude scale for up to 5 CCs or 6 cells And color coded based on the selected scheme i e CC PCC and Level Refer to Figure 13 2 on page 348 Figure 13 3 on page 348 and Figure 13 4 on page 349 Spectrum Magnitude frequency spectrum fixed span for a selected CC Strip Chart Magnitude of selectable cell scan result metric ...

Page 348: ...Over the Air Measurements OTA LTE FDD Option 370 LTE TDD Option 371 5G TF Option 377 5G NR 5G NR EVM Conducted Option 378 About Over the Air OTA Measurements Figure 13 2 LTE FDD Bar Chart CC Example Figure 13 3 LTE FDD Bar Chart PCC Example ...

Page 349: ...asurements OTA LTE FDD Option 370 LTE TDD Option 371 5G TF Option 377 5G NR 5G NR EVM Conducted Option 378 About Over the Air OTA Measurements Figure 13 4 LTE FDD Bar Chart Level Example Figure 13 5 Example of the 5G TF with Four Multiple Display Options ...

Page 350: ...uide Over the Air Measurements OTA LTE FDD Option 370 LTE TDD Option 371 5G TF Option 377 5G NR 5G NR EVM Conducted Option 378 About Over the Air OTA Measurements Figure 13 6 Spectral Emission Mask Example Figure 13 7 SSB Index Example ...

Page 351: ...D Option 371 5G TF Option 377 5G NR 5G NR EVM Conducted Option 378 About Over the Air OTA Measurements Figure 13 8 5G NR Center Frequency and SSB Offset Before Multiple Cell IDs Example Figure 13 9 5G NR Center Frequency and SSB Offset and SSB Index and PCI Single With Multiple Cell IDs Example ...

Page 352: ...A LTE FDD Option 370 LTE TDD Option 371 5G TF Option 377 5G NR 5G NR EVM Conducted Option 378 About Over the Air OTA Measurements Figure 13 10 5G NR EVM Constellation Example Measure Data set to All Figure 13 11 5G NR EVM Constellation Example Measure Data set to PBCH ...

Page 353: ...Measurements OTA LTE FDD Option 370 LTE TDD Option 371 5G TF Option 377 5G NR 5G NR EVM Conducted Option 378 About Over the Air OTA Measurements Figure 13 12 5G NR EVM Frame Summary Example Figure 13 13 5G NR EVM Constellation and Frame Summary Example ...

Page 354: ... through CC7 up to 8 carriers in any combination of the following Table Cell scan numeric results for up to 6 cell sites ID s including Cell ID Channel Power PSS SSS Sync Corr Bar Chart Vertical power bar graph of selectable cell scan result metric for up to 8 cell sites with adjustable color heat amplitude scale And color coded based on the selected scheme i e CC PCC and Level See also Figure 13 ...

Page 355: ...the following features Refer to step 11 and 5G NR on page 367 See also 5G NR EVM Conducted Features P O Option 378 on page 358 Cell Scan Results Center frequency PCI Physical Cell Identifier Cell ID Sector ID Group ID C S G SSB Synchronization Signal Block Index RSRP Reference Signal Received Power dBm RSRQ Reference Signal Received Quality dB IMPORTANT 5G NR only demodulates PSS SSS and PBCH DMRS...

Page 356: ...2 3 or 4 simultaneous measurements of key performance indicators KPI s for any component carrier CC0 through CC7 up to 8 carriers in any combination of the following Table Cell scan numeric results including PCI RSRP RSRQ RSSI PSS SSS SINR and Freq Err for up to 8 CCs and 6 cells for each CC Bar Chart Vertical power bar graph of selectable cell scan result metric with adjustable color heat amplitu...

Page 357: ...E FDD Option 370 LTE TDD Option 371 5G TF Option 377 5G NR 5G NR EVM Conducted Option 378 About Over the Air OTA Measurements Figure 13 15 Example of 5G NR Single Carrier and Single Cell Figure 13 16 Example of 5G NR Multi Beam Displaying Multiple Beams From Cell Site 378 ...

Page 358: ... on making FieldFox EVM related measurements with the X Series Multi touch Signal Analyzers refer to http rfmw em keysight com wireless helpfiles 5GNRMode FlexUI htm and then http rfmw em keysight com wireless helpfiles 5GNRMode FlexUI htm me as_5gnr_evm Modulation Analysis htm content The FieldFox can make more comprehensive EVM measurements with the 89600 VSA software using the FieldFox s Remote...

Page 359: ...e adjacent Satellite Power chart The right portion of the screen displays Satellite Power Carrier to Noise C No dBHz values on the tops of the satellite power chart Then System System Configuration Frequency Ref Freq Ref Source GPS Back For more information Refer to Figure 13 18 called Example of the LTE FDD Scan Results Table Five CCs and one cell LTE TDD is similar on page 373 And refer to Figur...

Page 360: ...sen begins scanning for signals Additional FieldFox setting changes are required for OTA to display the available signals Refer to the steps below and see also How to Define a Cell or Cell s and Use OTA on page 378 4 Define some carrier and cell measurement information See also How to Define a Cell or Cell s and Use OTA Then modify the carrier and cells based on the selected OTA technology i e LTE...

Page 361: ...ist Freq Mode Chan This changes the Center frequency value Press Channel Table opens a softkey menu where you can select define your carrier by Band and Channel The Center frequency value is auto coupled to the Band Channel entered Option 370 LTE FDD and Option 371 LTE TDD Only Then Band n Enter The Channel Band and the Center values are auto coupled Then Favorites List Option 370 LTE FDD and Opti...

Page 362: ...N minimum and maximum values vary with band setting and licensed frequency Then Sync ARFCN sets the ARFCN reference signals to be synchronized Then Sync GSCN sets the GSCN signals to be synchronized Then Center sets the GSCN center frequency Then Offset sets the offset from the Center frequency Then Back 7 Select Trace 6 choose Window 1 2 3 4 Then Win State OFF ON to ON Then Display Type Table or ...

Page 363: ... Power Default PSS 5G NR RSRP RSRQ RSSI SINR PSS SSS or DMRS Default RSRP 5G NR EVM RSRP RSRQ RSSI PSS SSS PBCH DMRS or Power Default PSS Then Sort Order and choose Up or Down Default Auto Refer to About Over the Air OTA Measurements on page 346 When this softkey is inactive the Sort Order is set to Auto Then Sort Data n Then select the type of data to be sorted LTE FDD and LTE TDD RSRP RSRQ RSSI ...

Page 364: ...ata c 5G NR EVM Only When Display Type is set to Constellation or Frame Summary Press More Then Demod Data All choose the demodulation data type PSS SSS PBCH PBCH DMRS or All default All Then Data Logging to record data Refer to How to Use Data Logging OTA Options 370 372 377 and 378 on page 401 9 Optional Display Type Table Different softkey menus are displayed for up to six different Display Typ...

Page 365: ...onent Carrier associated with each bar PCI to set the PCI Physical Cell Identifier associated with each bar Level to set the level of the value associated with each bar When level is selected you can set the channels red and blue power level limits with the Scale Amptd softkeys Press Scale Amptd Then one of the following Red Limit to set the power level and color scale for high power channels Blue...

Page 366: ...f the reference line Enter a negative value by pressing Run Hold either before or after typing a value More opens a menu of softkeys that are the same as those that are defined when the Display Type Table Others optional Autoscale e Optional When Display Type Constellation or Frame Summary Modify RF attenuator Preamp and other settings Press Scale Amptd and Then choose from the following Press Ran...

Page 367: ...s SSBs and can be used to enable dynamic spectrum sharing DSS MBSFN OFF ON Enables the MBSFN frames for NR control channels SSBs Default OFF Toggle All Subframes Enables or disables all of the MBSFN frames Enabled by default when MBSFN is set to ON Subframe 3 OFF ON Enables or disables subframe 3 as one of the MBSFN frames for NR control channels SSBs Subframe 4 OFF ON Subframe 7 OFF ON Subframe 8...

Page 368: ...efault Auto Then Bandwidth Sets the FR1 FR2 bandwidth Default FR1 100 MHz Then Resource Grid Opens a softkey menu to select the component carrier and optionally export scan results to 5G NR Then SCS Auto the SCS value is coupled to the center frequency and FR1 and FR2 Manual choices are 15 kHz and 30 kHz Default Auto Then Grid Start only settable when SSB Auto is set to OFF Default 0 Then Grid Siz...

Page 369: ...ults Setup Opens a softkey menu to select the component carrier and optionally export scan results to 5G NR Then CC CC0 Selects the cc signal information to be scanned CC0 to CC4 Default CC0 Then Copy to Manual Setup Selects the cc signal information to be copied to the manual SSB Then Export to 5G NR Setup Export the current scanned table of information to 5G NR SCS Common The signal sub Carrier ...

Page 370: ... Record Settings Record Save Recall and Indoor Map Data Logging Record Outdoor Logging or Play If you have previously stored data recordings a To set the Record Settings Outdoor Mapping only then choose Then Meas Interval ON Then Interval Type choose Time or Distance Then if applicable Time Interval enter time interval in seconds Or Then if applicable Distance Interval enter distance interval in m...

Page 371: ...ry log file e g TempAutoSave csv is automatically saved after each new record is recorded to guard against data lose in the case of an unexpected shutdown The temporary log file is automatically deleted after you stop recording and manually save the log file or Back c Indoor Map Data Logging then Record Indoor Data or Recall Indoor Log File Then choose Navigate OFF ON Data Selection Zoom Pan Recor...

Page 372: ...ble disable map data point labels and icon types Save Image PNG Saves the current displayed map to a png file default filename is MapImageFile 14 Export KML file into 3rd party mapping software i e Google Map or Google Earth Refer to Step 6 Import and Play back KML Files into 3rd Party Software Example Google Earth with Animation Tool on page 392 Labels OFF ON Enables Disables map data point label...

Page 373: ...3 17 Single cell selected but other cells displayed when CC0 to CCn has been enabled If ALL is selected only the CC with the highest power is displayed Not all of the detected data is displayed Figure 13 18 Example of the LTE FDD Scan Results Table Five CCs and one cell LTE TDD is similar1 1 When multiple component carriers are selected the results of the component carrier CC with the highest powe...

Page 374: ...Over the Air Measurements OTA LTE FDD Option 370 LTE TDD Option 371 5G TF Option 377 5G NR 5G NR EVM Conducted Option 378 How to Set Up Over the Air OTA Mode Settings Figure 13 19 Example of the 5G TF Scan Results Table Two cc and one cell ...

Page 375: ... OTA LTE FDD Option 370 LTE TDD Option 371 5G TF Option 377 5G NR 5G NR EVM Conducted Option 378 How to Set Up Over the Air OTA Mode Settings Additional LTE FDD Examples LTE TDD is Similar Figure 13 20 Example of LTE FDD with Single Carrier Multiple Cell Sites KPIs ...

Page 376: ... the Air Measurements OTA LTE FDD Option 370 LTE TDD Option 371 5G TF Option 377 5G NR 5G NR EVM Conducted Option 378 How to Set Up Over the Air OTA Mode Settings Figure 13 21 Example of LTE FDD with Multiple Carriers Single Cell Site and KPI s ...

Page 377: ...Default Press Freq Dist Center Default 751 MHz For this example Center 751 MHz Press Scale Amptd Then Preamp ON Then Ref Level Default Then use the arrows the rotary knob or numeric keypad to position the trace for optimum viewing on the FieldFox display Refer to Figure 13 22 on page 377 You should see a 20 dB or greater LTE FDD signal to noise level If not refer to Troubleshooting on page 410 Fig...

Page 378: ...cording to DUT requirements Define cell settings Define component carrier s CCs settings Example Using OTA LTE FDD or 5G TF refer to Step 1 LTE FDD Option 370 LTE TDD Option 371 5G TF Option 377 and 5G NR Option 578 Component Carrier CC and Cell Defined on page 378 Then Step 2 Select Trace Type on page 384 Step 3 Modify Scale and the Display Color Bar Settings on page 386 Step 4 Enable Data Loggin...

Page 379: ...All Measurement Setups Press CC CCO Press Enabled OFF ON Enable disable selected component carriers If only one CC is enabled the OFF key press is ignored default ON Press Center to select the currently displayed component carrier center frequency For LTE FDD and LTE TDD instrument dependent Optional LTE FDD and LTE TDD only Freq Mode Chan Then Channel Table Opens a menu to choose your CC Band Cha...

Page 380: ...pplicable for Spectrum When All is specified for Spectrum the FieldFox defaults to CC0 or CC0 CC1 CC2 CC3 or CC4 i e 5G TF and 5G NR has up to seven component carrier choices Then PCI All select PCIs All Not applicable for Spectrum When All is specified for Spectrum PCI is set to single For all other display types the results for any cells with any PCI are displayed default All Single displays the...

Page 381: ...ired if scan does not display data LTE FDD and LTE TDD Press FreqError Th and change to 5 kHz Wait a few seconds until Table populates or set FreqLock Range to Extended Then change back to the desired Frequency Error Threshold for your measurement 5G TF Press SyncCorr Th and change to 0 wait a few seconds until the Table populates and Then change back to the desired Sync Correlation Threshold for ...

Page 382: ...ynchronization raster When the results are snapped to the synchronization raster the ARFCN GSCN is included in the results Then Results Setup opens a menu of SSB offset copy related softkeys of to copy the selected SSB offset and SSB Freq to the selected component carrier s center frequency Then choose Then LTE Coexistence NSA DSS opens the LTE Coexistence softkey menu Then NSA DSS OFF ON Enables ...

Page 383: ...d 11 Then 5G NR Setup opens a menu of softkey menu choices to set the LTE signal values Freq Dist Meas Setup and Trace For details on these softkey menus refer to the hardkey descriptions and their related softkeys in steps 5 6 7 and 11 Then EMF opens the EMF softkey menu See also How to Set Up EMF Mode Settings Requires EMF Option 358 and 5G NR Option 378 on page 394 Then EMF Meas OFF ON Enables ...

Page 384: ...RS OFF ON Enables disables the current synchronized signal s demodulation reference signal 8 Press Trace 6 And set up your Windows and component carriers CCs as indicated in How to Set Up Over the Air OTA Mode Settings on page 359 9 Press System Press GNSS GNSS Receiver Internal Esc Press System FrequencyRef Internal Back Step 2 Select Trace Type Select one of the following display orientations Pr...

Page 385: ... LTE FDD Option 370 LTE TDD Option 371 5G TF Option 377 5G NR 5G NR EVM Conducted Option 378 How to Set Up Over the Air OTA Mode Settings Figure 13 24 Table and Bar Chart Display Types LTE FDD LTE TDD is similar Figure 13 25 Spectrum and Strip Chart Display Type 5G TF ...

Page 386: ...tep 3 Modify Scale and the Display Color Bar Settings To assign colors to low and high power values 1 Press Scale Amptd Red Limit to set high power values and to set the color 2 Press Blue Limit to set low power values and to set the color 3 And then press System Display Display Colors to set Indoor Outdoor or other display colors See also Chapter 31 System Settings If Freq then Meas Setup More SS...

Page 387: ...M Conducted Option 378 How to Set Up Over the Air OTA Mode Settings Figure 13 27 Outdoor Display Colors Figure 13 28 Indoor Display Colors Step 4 Enable Data Logging and Playback the Results Spectrum and Strip Chart information is not recorded Only the Table and Bar Chart data are saved See How to Record a Data Log Procedure on page 402 ...

Page 388: ...ude results See also GNSS GPS and GPS on page 784 Data results can be logged Data results can be saved to a CSV or KML file Refer to Save 5 Save the Log Results on page 391 User specifies how often results are stored Time Store results every n seconds Altitude Store results every n meters GPS must be enabled to store results by altitude Procedure 1 Press Trace 6 More Data Logging to view the Data ...

Page 389: ...e 803 Then File Type KML default or CSV Then Save Log File or Then Recall Log File Auto Save OFF ON default OFF Press to toggle to ON to enable Auto Save Then Back c Optional Press Indoor Map Data Logging then Record Indoor Data or Recall Indoor Log File Refer to How to Use Data Logging OTA Options 370 372 377 and 378 on page 401 Learn more refer to Chapter 16 Mapping and Option 352 Indoor Maps Se...

Page 390: ...to a png file default filename is Pilgrimage 4 When done press Stop The log file is automatically saved to the defined Device Type and File Type i e when you press Done Else edit the file name and then press Done See also Chapter 16 Mapping and Setting up Data Logging on page 497 5 Press Back Playing a Data Log and Viewing the Data To play the log results 1 Press Record Save Recall Recall Log File...

Page 391: ...o change the top reference position in the Bar Chart Strip Chart and Spectrum Red Limit to change the red color high power value dBm Bar chart only Blue Limit to change the blue color low power value dBm Bar chart only 4 Press Stop to exit the log playing To pause the log play 1 Press Pause Resume to pause or resume the log playing 2 Press Stop to exit the log playing Learn more refer to Chapter 1...

Page 392: ...File Folder where the file results will be stored 5 Press Back Learn more refer to Chapter 16 Mapping and Setting up Data Logging on page 497 Step 6 Import and Play back KML Files into 3rd Party Software Example Google Earth with Animation Tool Features Use the Playback Slider to replay measurement results See also Google Maps and or Google Earth s help Open the FieldFox KML file in Google Earth T...

Page 393: ...DD Option 370 LTE TDD Option 371 5G TF Option 377 5G NR 5G NR EVM Conducted Option 378 How to Set Up Over the Air OTA Mode Settings Click on each color coded balloon to see the table of measurement results for that location Figure 13 29 Importing a KML File Into Google Earth ...

Page 394: ...s Full Capability Requires EMF Option 358 and either SA mode Option 233 Mixed Analyzers or OTA 5G NR 5G NR EVM Conducted Option 378 This section consists of EMF Features EMF Setup Procedure EMF Features EMF has the following features EMF Measurement Results Measure and display corrected field strength in RMS average power Antenna control over X Y and Z antenna factors downloaded via USB Pass Fail ...

Page 395: ...Option 371 5G TF Option 377 5G NR 5G NR EVM Conducted Option 378 How to Set Up EMF Mode Settings Requires EMF Option 358 and 5G NR Option 378 EMF uses the following data formats Field Strength units dBµV m For use with E field signals dBµA m For use with H field signals dBG dB Gauss dBpT dB Tesla ...

Page 396: ... the Air Measurements OTA LTE FDD Option 370 LTE TDD Option 371 5G TF Option 377 5G NR 5G NR EVM Conducted Option 378 How to Set Up EMF Mode Settings Requires EMF Option 358 and 5G NR Option 378 Figure 13 30 Example of EMF with Triaxial Antenna ...

Page 397: ...o Chapter 15 USB Antennas Full Capability Requires EMF Option 358 and either SA mode Option 233 Mixed Analyzers or OTA 5G NR 5G NR EVM Conducted Option 378 and to Chapter Figure 15 1 FieldFox With USB Antenna 3 Importing and selecting X Y Z antenna factors Press System Utilities EMF Antennas When the USB antenna correction factors are imported EMF Option 358 couples many settings to ease setting u...

Page 398: ...ous softkey menu For more details on editing the USB antenna refer to Chapter 15 USB Antennas Full Capability Requires EMF Option 358 and either SA mode Option 233 Mixed Analyzers or OTA 5G NR 5G NR EVM Conducted Option 378 5 Once you have finished with your USB antenna setup a Press Sweep 3 Single Restart The FieldFox should display in order Analyzing CCO X Axis Analyzing CCO Y Axis and Analyzing...

Page 399: ...i Press Freq Span 120 GHz then iv Press System Utilities EMF Antennas Antenna Axis Auto default Auto then v Press X to view the X axis vi Press Y to view the Y axis and vii Press Z to view the Z axis 6 Verify EMF in 5G NR Mode a Press Mode OTA 5G NR then b Press Meas Setup 4 More EMF dBuV m i e For this example Other units are selectable For more information Refer to Figure 13 31 on page 399 See a...

Page 400: ...nts OTA LTE FDD Option 370 LTE TDD Option 371 5G TF Option 377 5G NR 5G NR EVM Conducted Option 378 How to Set Up EMF Mode Settings Requires EMF Option 358 and 5G NR Option 378 Figure 13 32 Using SA Mode Example to Verify the Triaxial Values Axis Y is Displayed ...

Page 401: ...he top center area of the screen Rec 55 55 2018 12 31 03 26 11 PM where 55 55 is the current and total trace number currently trace is 55 of 55 total scans 2018 12 3103 26 11 PM is the date and time of recording The name of a recording can be changed using Manage Sessions Learn more in To change Data Logging Configuration settings on page 403 See also Chapter 31 System Settings Spectrum and Strip ...

Page 402: ...abeler on page 807 Record Settings Outdoor Mapping only opens a softkey menu to enable you change your record related settings For more refer to To change Data Logging Configuration settings on page 403 Recall Save Recall opens a softkey menu to enable you to save and recall your data log and related file settings For more refer to To change Data Logging Configuration settings on page 403 Learn mo...

Page 403: ...e or Distance If applicable Time Interval Enter time in seconds 1s to 3 6 ks or If applicable Distance Interval Enter time in miters 10m to 10 km b To set the Record Save Recall File Folder Default System Default Sets the default User Folder path List files csv and kml are save recalled to CurrentDevice RecordPlayback CS Data Log Play files are save recalled to CurrentDevice RecordPlayback CS Or S...

Page 404: ...w to Play a Data Log Press Trace 6 If the session is already open skip the following step Otherwise Then More Data Logging Playback Then Recall Log File and select a file Then Recall File Then Play to playback your Table data is displayed in the left of screen graticules during playback When the end of the recording is reached playback begins again at trace 1 and continues to loop indefinitely Dur...

Page 405: ...en 1 and the record length MAXimum 2000 multiple CC and 1000 single CC Other Features Available Alignments For information on using alignments refer to the SA chapter s section Alignments on page 204 Scale Settings For information on using scale settings refer to the Data Analysis chapter s section All about Scale Settings on page 752 not all settings apply to OTA Options 370 and 377 External Gain...

Page 406: ... input signal See also OTA Setup Procedure on page 359 Couplings The current measurement settings help determine the auto range parameters If more than one CC is enabled when an auto range is executed the range is determined for each CC separately and the final range setting is set using the maximum Figure 13 33 OTA 5G NR Signal Before Auto Range Table Executing an auto range sets the Range RF Att...

Page 407: ...Measurements OTA LTE FDD Option 370 LTE TDD Option 371 5G TF Option 377 5G NR 5G NR EVM Conducted Option 378 About the Auto Range Feature Figure 13 34 OTA 5G NR Signal Before Auto Range Spectrum Figure 13 35 OTA 5G NR Before Auto Range Windows State ON ...

Page 408: ...TA LTE FDD Option 370 LTE TDD Option 371 5G TF Option 377 5G NR 5G NR EVM Conducted Option 378 About the Auto Range Feature Figure 13 36 OTA 5G NR Ongoing Auto Range Performing Auto Range Figure 13 37 OTA 5G NR After Auto Range but RF Atten or Preamp Settings Changed ...

Page 409: ...User s Guide 409 Over the Air Measurements OTA LTE FDD Option 370 LTE TDD Option 371 5G TF Option 377 5G NR 5G NR EVM Conducted Option 378 About the Auto Range Feature Figure 13 38 OTA 5G NR After Auto Range and Clean Sweep ...

Page 410: ... TDD Verify that the Extend Freq Lock value is enabled and then adjust settings to improve your measurement For 5G TF Check that the Frequency Correction Threshold value Sync Corr Th is small enough or not too large ADC errors Use Scale Amptd Range to adjust the absolute power level dBm For some data views you need to press More to view the Range softkey No data displayed Press Meas Setup 4 Only r...

Page 411: ... Signal Received Quality dBm RSSI Reference Signal Strength Indicator dBm SINR Signal to Interference Noise Ratio dB SSS SSS is the Secondary Synchronization signal for an LTE downlink frame dBm Freq Error Th LTE FDD and LTE TDD Frequency Error Threshold Hz Any data that is does not meet the defined Frequency Error value is not displayed 5G TF Center Frequency The specified 5G TF carrier center fr...

Page 412: ...l for a 5G NR frame SSS dBm SSS is the Secondary Synchronization signal for a 5G NR downlink frame dBm DMRS dBm Physical Broadcast Channel Demodulation Reference Signal dBm Used by 5G NR receiver to produce channel estimates for demodulation of associated physical channel Freq Error Hz Frequency error is the difference of the transmitted signal quality from the ideal Hz Chan Freq Chan Freq is the ...

Page 413: ...ffset SB RB Offset SSB SC Offset Synchronization Signal Block SSB SC Offset SSB Delta Center kHz Synchronization Signal Block Delta Center SSB Delta Center kHz Sync Corr Synchronization Correlation Sync Corr Channel Power dBm Channel power Freq Error Hz Frequency error Hz Time Offset ms Time Offset ms is one of the required EVM calculations PSS EVM rms PSS EVM rms is the Primary Synchronization si...

Page 414: ... x SS RSRP NR carrier RSSI Here N refers to number of resource blocks in NR carrier RSSI measurement Bandwidth The measurements in N Numerator and D Denominator are made over the same set of resource blocks RBs RSSI dBm Received Signal Strength Indicator measures the average received power found only in OFDM symbols that for an antenna port that are part of the measurement bandwidth over N resourc...

Page 415: ...adiated from gNB Calibrated metrology milli meter wave phased array antenna simulates 5G UE antenna performance Troubleshoot the 5G radio access network with 3D test coverage and path loss measurements utilizing the built in CW generator Phased array performance verification showing bore sight polar antenna pattern with compass heat map and beam sweep to map display views In this Chapter IMPORTANT...

Page 416: ...ation settings on page 450 How to Playback a Data Log on page 451 Using Mapping on page 452 Other Features Available on page 452 Alignments SA chapter Alignments on page 204 External Gain SA chapter External Gain on page 158 Field Strength Corrections SA How to select and edit corrections for Field Strength measurements on page 161 Scale Settings Data Analysis All about Scale Settings on page 752 ...

Page 417: ...e Site Heat Map Polar Antenna Park Antenna Polar with Image Overlay Color Coded Display Types Specify high and low power with color bars Azimuth and Elevation 8 x 8 phased array antenna Covers beam sweep 60 to 60 degrees azimuth 90 degree elevation with 1 degree per step Individually factory characterized elements magnitude and phase Data Logging GPS stamped data measurements Define measurement in...

Page 418: ...he following Bore Sight Elevation angle is fixed Scan azimuth 60 degrees to 60 degrees Heat Map Scan both elevation and azimuth angle with adjustable color heat amplitude scale Polar ANT Scan azimuth angle Elevation is fixed Park ANT Polar image overlay load image Resize polar coordinates Specify alignment angles Specify compass true north Define antenna direction azimuth degrees IMPORTANT Option ...

Page 419: ...sight N9938 90006 User s Guide 419 5G Rapid Prototype Phased Array Antenna Option 360 About Phased Array Antenna Measurements Figure 14 1 Example of local point to point LAN connection Tripod not included ...

Page 420: ... Keysight N9938 90006 User s Guide 5G Rapid Prototype Phased Array Antenna Option 360 About Phased Array Antenna Measurements Figure 14 2 Bore Sight Scan CW RF Figure 14 3 Polar Scan with compass displayed ...

Page 421: ...Keysight N9938 90006 User s Guide 421 5G Rapid Prototype Phased Array Antenna Option 360 About Phased Array Antenna Measurements Figure 14 4 Heat Map Azimuth vs Elevation Parked Antenna ...

Page 422: ...06 User s Guide 5G Rapid Prototype Phased Array Antenna Option 360 About Phased Array Antenna Measurements Figure 14 5 Heat Map and Undocked Active Entry Parked Antenna Scan elevation angles 90 degrees and azimuth 60 degrees ...

Page 423: ...Keysight N9938 90006 User s Guide 423 5G Rapid Prototype Phased Array Antenna Option 360 About Phased Array Antenna Measurements Figure 14 6 Polar Assign Orientation and Polar with Compass Orientation ...

Page 424: ...eysight N9938 90006 User s Guide 5G Rapid Prototype Phased Array Antenna Option 360 About Phased Array Antenna Measurements Figure 14 7 Polar Measurement with Compass with Recalled Image of Indoor Auditorium ...

Page 425: ... About Phased Array Antenna Measurements CW vs Pulsed RF Measurements Figure 14 8 Bore Site Measurement with CW RF Dwell Time 10 ms Max Hold OFF IMPORTANT For pulsed RF measurements increasing the Dwell Time is recommended for faster throughput and accurate signal capture in a single sweep ...

Page 426: ...pid Prototype Phased Array Antenna Option 360 About Phased Array Antenna Measurements Figure 14 9 Bore Site Measurement with Pulsed RF Dwell Time 10 ms Max Hold OFF Figure 14 10 Bore Site Measurement with Pulsed RF Dwell Time 100 ms Max Hold OFF ...

Page 427: ... Up a Scan and Use Option 360 This section consists of Option 360 Setup Procedure Figure 14 11 Setting Up Option 360 Using Other Modes Option 360 Setup Procedure 1 Connect your equipment similar to Figure 14 1 on page 419 2 Set FieldFox to use static IP address Press System Then System Configuration More LAN a In the Setting screen use the arrows the rotary knob or numeric keypad to highlight Obta...

Page 428: ... 3 fields must match the Static IP address of FieldFox For example if the Ball Antenna IP address is 192 168 1 10 set FieldFox Static IP address to 192 168 1 xx xx must be different number than shown in the last field of the for Ball Antenna Refer to Figure 14 15 on page 437 IMPORTANT If you forget you N9910X 028 Ball Antenna s static IP address refer to this link and the Support tab for assistanc...

Page 429: ...ght N9938 90006 User s Guide 429 5G Rapid Prototype Phased Array Antenna Option 360 How to Set Up Phased Array Antenna Settings Figure 14 13 Site Wide LAN Configurations and Field Measurements Configurations ...

Page 430: ... Guide 5G Rapid Prototype Phased Array Antenna Option 360 How to Set Up Phased Array Antenna Settings Figure 14 14 Site Wide LAN Configurations and Field Measurements Configurations Azimuth and Elevation Alignment Orientation Diagram ...

Page 431: ...age 438 Select Meas Setup Antenna Settings choose Ball Antenna LAN Address Settings choose Res BW or Video BW Beam Width Array Antenna choose Center Azimuth Ref Elevation Ref Polar Display Ref Sweep Dwell Time Optional For pulsed RF measurements it is recommended that the Dwell Time is increased Sweep Max Hold Optional For pulsed RF measurements it is recommended that Max Hold is set to OFF when u...

Page 432: ...Marker Trace You can set up to four traces Marker Table Enable or disable the marker table that displays the current markers and their values Learn more about markers Refer to the Chapter 30 Data Analysis Features See also Figure 14 5 on page 422 8 Enable the Data Logging settings Press Trace 6 Data Logging then Record Outdoor Logging or Play If you have previously stored data recordings or To set...

Page 433: ...n The incoming trace continues to sweep Press again to continue recording Stop Immediately The Save the log file menu opens Edit the filename and press Done to exit menu See Settings below and To change Data Logging Configuration settings on page 450 To change your file settings or measurement interval Learn more refer to To change Data Logging Configuration settings on page 450 Press Record to be...

Page 434: ...ap data point labels and icon types Save Image PNG Saves the current displayed map to a png file default filename is MapImageFile 11 Export KML file into 3rd party mapping software i e Google Map or Google Earth Refer to Step 7 Import and Play back KML Files into 3rd Party Software Example Google Earth with Animation Tool on page 447 12 Select Trace 6 choose For this step refer to Figure 14 6 on p...

Page 435: ...ased array antenna settings Ball Antenna LAN address Settings Resolution BW Video BW Beam Width Array Antenna Center frequency Azimuth Ref Elevation Ref and Polar Display Ref For details refer to step 6 above Then Start Azimuth 45 degrees Default 45 degrees Then Stop Azimuth 45 degrees Default 45 degrees Then Ref Elevation 45 degrees Default 0 degrees 14 Optional choose change sweep dwell time and...

Page 436: ...SV save files as a CSV file Learn more refer to Chapter 32 File Management 16 Optional Modify scale and amplitude values Press Scale Amptd Then one of the following Autoscale Automatically adjusts the Y axis minimum and maximum values Scale Manually enter a scale per division values Others Scale Ref Level etcetera as desired Learn more refer to Chapter 30 Data Analysis Features 17 Optional Modify ...

Page 437: ...60 How to Set Up Phased Array Antenna Settings Figure 14 15 Example of Phased Array Antenna and FieldFox Static IP Setup First Three Static IP Fields Are the Same Setting the phased array antenna IP address Setting the FieldFox static IP address First three fields the same as the antenna ...

Page 438: ...438 Keysight N9938 90006 User s Guide 5G Rapid Prototype Phased Array Antenna Option 360 How to Set Up Phased Array Antenna Settings Figure 14 16 Example Antenna Settings Table ...

Page 439: ... the Results on page 443 Step 7 Import and Play back KML Files into 3rd Party Software Example Google Earth with Animation Tool on page 447 Step 1 Connect Your Equipment Connect your equipment similar to Figure 14 1 on page 419 Step 2 Set FieldFox to Use Static IP with Your Ball Antenna The Ball antenna s default static IP address is 192 168 1 10 Set FieldFox to use static IP address Press System ...

Page 440: ... the rotary knob or numeric keypad to select Apply Settings 10 Press Edit then select Now 11 Press Done Edit Done Step 3 Define the measurement 1 Press Preset then Mode Preset Factory 2 Selecting Phased Array Antenna mode Press Mode Phased Array Antenna Depending on the number of options loaded on your FieldFox it may be necessary to press More 3 Optimizing the FieldFox to scan for signals a Run t...

Page 441: ... Log File Recall or f Record or g Play if you have a previously stored data scan See also How to Set Up Phased Array Antenna Settings on page 427 and Step 6 Enable Data Logging and Playback the Results on page 443 Learn more refer to Chapter 16 Mapping and Setting up Data Logging on page 497 h Optional Press Sweep 3 and modify select items Single Continuous OFF ON to ON default Restart Dwell Time ...

Page 442: ...ze Max Med Min or Polar Orientation or Image Enable OFF ON or Recall Image or Compass Image OFF ON or Compass North or Step 5 Modify Scale and Attenuator Settings To set the scan s scaling and receiver corrections Learn more see How to select and edit corrections for Field Strength measurements on page 161 1 Press Scale Amptd Corrections then choose Apply Corrections OFF ON RcvrSide Antenna then c...

Page 443: ...stamps Timestamps are included in log files with or without GPS GPS must be enabled for log altitude results See also GNSS GPS and GPS on page 784 Data results can be logged Data results can be saved to a CSV DREC Option 360 only or KML file Refer to on page 447 User specifies how often results are stored Time Store results every n seconds Altitude Store results every n meters GPS must be enabled ...

Page 444: ...m Default Sets the default User Folder path List files csv and kml are save recalled to CurrentDevice RecordPlayback PAA Data Log Play files are save recalled to CurrentDevice RecordPlayback PAA Or System Sets the User Folder to the user defined system folder path name List files are save to from CurrentDevice UserSelectedFolde r Data Log Play files are save recalled to CurrentDevice UserSelectedF...

Page 445: ...in a new recording and then Pause Resume Temporarily halts recording until pressed again The incoming trace continues to sweep Press again to continue recording Stop Immediately stops recording and a Save the Log File menu opens to rename and save your data log file Press Record to begin a new recording Then Maps To enable map view and related features e g Data Selection Red Blue Limits Labels Ico...

Page 446: ...is MapImageFile 4 When done press Stop The log file is automatically saved to the defined Device Type and File Type Else edit the User Folder and File Type under Record Save Recall where the file results will be stored 5 Press Back Playing a Data Log and Viewing the Data To play the log results 1 Press Record Save Recall Recall Log File And use the Use the RPG or the arrow keys to highlight the fi...

Page 447: ...to 3rd Party Software Example Google Earth with Animation Tool Features Use the Playback Slider to replay measurement results See also Google Maps and or Google Earth s help Refer to Figure 14 17 on page 447 Open the FieldFox KML file in Google Earth The time slider appears in upper left of the map Manual Mode Move the time slider cursor to see color coded icons pop up according to the timestamp L...

Page 448: ...nt and total trace number currently trace is 55 of 55 total scans 2018 12 3103 26 11 PM is the date and time of recording The name of a recording can be changed using Manage Sessions Learn more in To change Data Logging Configuration settings on page 450 See also the FieldFox User s Guide s System Settings chapter When GPS is enabled GPS R is indicated at the bottom of the FieldFox display Learn m...

Page 449: ...th Annotation that can be Logged and Played Back If Data Logging or Playback is not occurring when you think it should check the following Is the sweep in HOLD upper left annotation or check the Sweep menu for Continuous set to OFF Is Recording or Playback Paused mid left annotation Is the Data Logging or Playback Interval set too long Configuration settings ...

Page 450: ...450 Press Save Log File to save the current Table data i e default save device is Internal Then Record Settings Outdoor Logging To change your measurement interval settings Learn more refer to To change Data Logging Configuration settings on page 450 To change Data Logging Configuration settings Press Trace 6 Then Data Logging then choose Then Record Settings Outdoor Mapping Only Optional Then Mea...

Page 451: ...ble data is displayed in the left of screen graticules during playback When the end of the recording is reached playback begins at the start of scan and continues to loop indefinitely During playback choose from the following Pause Resume Temporarily halts playback Then choose from the following Pause Resume Press to continue playing Stop Immediately stops playback Then choose from the following P...

Page 452: ...to Chapter 16 Indoor and Outdoor Mapping Option 352 Requires Spectrum Analyzer Mode Option 233 and GPS Receiver Option 307 Other Features Available Alignments For information on using alignments refer to the SA chapter s section Alignments on page 204 External Gain Refer to refer to the SA chapter s section External Gain on page 158 Field Strength Corrections How to select and edit corrections for...

Page 453: ...fy the correct Antenna Settings have been entered The FieldFox s displayed annotation indicates Check LAN connection Check IP address during pinging Verify The LAN address for first 3 fields matches the Static IP address of FieldFox For example if the Ball Antenna IP address is 192 168 1 10 set FieldFox Static IP address to 192 168 1 xx xx must be different number than shown in the last field of t...

Page 454: ...454 Keysight N9938 90006 User s Guide 5G Rapid Prototype Phased Array Antenna Option 360 Troubleshooting ...

Page 455: ... over the air demodulation of single acquisition multiple cell towers or multiple acquisitions for multiple component carriers CCs Additionally 5G NR 5G NR EVM Conducted among other 5G NR capabilities has new FR1 and FR2 spectrums The FieldFox display can be configured to show data formats such as table bar chart spectrum and strip chart of key performance indicators KPI s By integrating over the ...

Page 456: ...ated metrology milli meter wave triaxial antenna simulates 5G UE antenna performance Troubleshoot the 5G radio access network with 3D test coverage and path loss measurements utilizing the built in CW generator Triaxial antenna performance verification showing bore sight polar antenna pattern with compass heat map and beam sweep to map display views Measure and display corrected field strength in ...

Page 457: ...tures on page 459 How to Set Up a USB Antenna Also Known as EMF Antenna on page 461 USB Antenna Setup Procedure on page 461 Other Features Available on page 465 Alignments SA chapter Alignments on page 204 External Gain SA chapter External Gain on page 158 Record Playback Record Playback SA Option on page 535 Scale Settings All about Scale Settings on page 752 Troubleshooting on page 466 Why and W...

Page 458: ... Antenna Cable Amplitude Correction Types Triaxial antenna X Y Z Cable triaxial connection Cable Receiver Side Antenna Receiver side Cable Source Side Antenna Source Side Antenna Triaxial off Source and Receiver sides Color Coded Display Types Specify high and low power with color bars Features Automatic detection of previously imported USB antenna corrections i e to view pre Apply Corrections OTA...

Page 459: ...A 5G NR Some measurement parameters are auto coupled and are not user settable USB Antenna Features USB antenna feature has the following features SA mode automatically detect if Import antenna factors are present applies correct X Y Z antenna amplitude corrections for EMF measurements SA mode X Y Z factors if available are enabled by default OTA mode 5G NR EMF can be manually enabled Figure 15 2 ...

Page 460: ...ll Capability Requires EMF Option 358 and either SA mode Option 233 Mixed Analyzers or OTA 5G NR 5G NR EVM Conducted Option 378 About USB Antenna Also Known as EMF Antenna Measurements Figure 15 3 Example Verifying the Triaxial Values Axis Y is Displayed ...

Page 461: ...up Procedure 1 Select the mode and set up your measurement Refer to Chapter 13 Over the Air Measurements OTA LTE FDD Option 370 LTE TDD Option 371 5G TF Option 377 5G NR 5G NR EVM Conducted Option 378 or to Chapter 9 SA Spectrum Analyzer Mode Option 233 Mixed Analyzers 2 Connect a USB antenna Refer to Figure 15 1 3 Importing and selecting the X Y Z antenna factors a OTA 5G NR and SA Mode Press Sys...

Page 462: ...e How to Set Up EMF Mode Settings Requires EMF Option 358 and 5G NR Option 378 on page 394 6 If you need to edit or add new antenna factors or cable factors then repeat step 5 as required for Y Z and the Cable Factors See also How to Set Up EMF Settings Requires EMF Option 358 GPS Option 307 and SA Mode Option 233 Mixed Analyzers on page 227 and How to Set Up EMF Mode Settings Requires EMF Option ...

Page 463: ...apability Requires EMF Option 358 and either SA mode Option 233 Mixed Analyzers or OTA 5G NR 5G NR EVM Conducted Option 378 How to Set Up a USB Antenna Also Known as EMF Antenna Figure 15 4 Example Summing of Triaxial Values Figure 15 5 Example Verifying EMF ...

Page 464: ...table values refer to SA Mode How to Set Up EMF Settings Requires EMF Option 358 GPS Option 307 and SA Mode Option 233 Mixed Analyzers on page 227 OTA Mode How to Set Up EMF Mode Settings Requires EMF Option 358 and 5G NR Option 378 on page 394 Figure 15 6 SA Mode Example Editing and Adding a New X axis antenna Keysight does not recommend editing a USB antenna s correction factors If New is select...

Page 465: ... s section Alignments on page 204 Scale Settings For information on using scale settings refer to the Data Analysis chapter s section All about Scale Settings on page 752 not all settings apply to a USB antenna External Gain Refer to refer to the SA chapter s section External Gain on page 158 Record Playback Refer to refer to the Interference Analyzer chapter s section Record Playback SA Option on...

Page 466: ...played verify the USB antenna is connected correctly or Unable to communicate with antenna Ensure it is connected Verify the antenna connection i e Disconnect and reconnect the USB cable Press EMF Antennas Import Antenna If the FieldFox still displays the USB antenna error try a different USB antenna If you are unable to view the X Y and Z antenna correction factors then Press Scale Amptd More Cor...

Page 467: ...358 provides a unique portable solution for indoor and outdoor mappings in the field Option 352 adds indoor and outdoor mapping capability to FieldFox analyzers so that FieldFox can import maps from OpenStreetMap OSM for data collection and data plotting to the map directly on the FieldFox instrument display The FieldFox Map Explorer resides at the System level and enables you to download import e...

Page 468: ...ll automatically load the corresponding map to match the GPS coordinates With Indoor Mapping Using the FieldFox Import floor plans or site maps from picture files PNG JPG BMP Interactive Walk Test data collection with location pointer Save Indoor Map files kDAT Indoor Map file Viewer with results presentation options With RF Coverage Mapping Using the FieldFox Begin with Data Logging recorded data...

Page 469: ...o Add Directional Finding DF Bearing on page 507 How to Record a Data Log Outdoor Logging Only on page 510 To change Data Logging Configuration settings on page 511 How to Play a Data Log on page 511 Update Available Message on page 516 Troubleshooting on page 512 General Troubleshooting on page 514 Port 5000 in Use Error on page 514 Miscellaneous Mapping Errors on page 517 Other Features Availabl...

Page 470: ...door mapping Two Mapping Types Indoor Maps Outdoor Maps Requires Option 307 Color Coded Display Types Specify high and low power with color bars Store Geo location to external or connect to LAN and Download to PC memory SD card Connect to LAN and download to PC memory USB card Data Logging GPS stamped data measurements Define measurement interval by time or distance Show results in TableChart Add ...

Page 471: ...r and Outdoor Mapping Option 352 Requires Spectrum Analyzer Mode Option 233 and GPS Receiver Option 307 Figure 16 2 Maps With Current Position Marker Displayed OpenStreetMaps Figure 16 3 Using Mapping Option 352 Satellite View for Indoor Mapping ...

Page 472: ...r and download Node js to a PC e g Google Chrome Mozilla Firefox Safari or Microsoft Edge https nodejs org en download 2 Run the Node JS installation file by accepting the wizard s defaults i e including leaving the Automatically install the necessary tools Note that checkbox empty unchecked Refer to Figure 16 4 and Figure 16 5 on page 473 IMPORTANT If your FieldFox is connected directly to the LA...

Page 473: ...quires Spectrum Analyzer Mode Option 233 and GPS Receiver Option 307 How to Install Node js and Running the FieldFox Mapping Software Figure 16 4 Downloading the Node js Installer to a PC Figure 16 5 Default Download Path for Node js Installer to a PC IMPORTANT Do not change path ...

Page 474: ...nloads folder Refer to www keysight com find fieldfoxsupport and then download the FieldFoxMapping zip Refer to Figure 16 7 2 Run the FieldFox Map Support Tool software s installation software by going to the folder where the FieldFox Tool software is installed and double click Run bat Refer to Figure 16 6 on page 474 3 Paste and Enter the address into a HTML5 compatible browser Refer to Figure 16...

Page 475: ...a Step 1 Select Draw An Area to map Enter a location in the search area and click on the map and use the Zoom In Zoom Out buttons to select the area to map Also your mouse scroll wheel can be used for zooming in and out Hint The larger the map area selected for final mapping the longer it takes for the file download Click on the box button and click and drag to select the map area Hint To clear an...

Page 476: ...ieldFox Map Support Tool Select all Zoom levels of the map you wish to save Hint To select Zoom levels click the zoom boxes The more Zoom levels checked the more map images that have to be saved and it will take longer to download the images c Step 3 Input a filename to store your requested images from OpenStreetMaps The zip file is then stored in your PC s Downloads folder ...

Page 477: ...he FieldFox Map Support Tool Figure 16 8 FieldFox Mapping Opens in HTML5 Compatible Browser Zoom 5 Saving your zip file to a storage device and importing your zip to the FieldFox a Insert an SD card or USB storage device into your PC For FTP refer to Refer to Move Copy Files on page 809 and to the MMEM SCPI commands in the FieldFox Programming Guide on www keysight com ...

Page 478: ... the zip file to your SD card or USB storage device d Remove the SD card USB storage device from your PC e Insert the SD card USB storage device into the FieldFox Figure 16 9 New Maps Zip File MapExample_1 IMPORTANT In the folder that contains your unzipped files do not change any of the Map file folders or filenames Doing so will prevent the FieldFox from being able to recognize the map files New...

Page 479: ...ess Source Device Internal SD Card USB 3 Press Import Maps ZIP 4 In the Select zip file to import window that opens if there is more than one zip file listed select the zip file you want to load by using the arrows or the rotary knob and then press Recall File Refer to Figure 16 11 on page 481 and Figure 16 11 on page 481 5 Press Back to return to the previous menu For FTP refer to Refer to Move C...

Page 480: ... s Guide Indoor and Outdoor Mapping Option 352 Requires Spectrum Analyzer Mode Option 233 and GPS Receiver Option 307 Importing a zip File to the FieldFox Figure 16 10 Example of a Maps zip Being Recalled From a USB Storage Device ...

Page 481: ...tdoor Mapping Option 352 Requires Spectrum Analyzer Mode Option 233 and GPS Receiver Option 307 Importing a zip File to the FieldFox Figure 16 11 Example of Maps Folder Containing Imported Maps zip Files to the FieldFox s InternalSD UserData Maps Folder ...

Page 482: ...s in setting up an Option 352 Mapping measurement This section consists of How to Set Up Mapping When the FieldFox Is On The LAN Option 352 Indoor Maps Setup Procedure Figure 16 12 Overview Setting Up Option 352 Indoor Mapping Using Other Modes Option 352 Outdoor Maps Setup Procedure Requires GPS Option 307 Figure 16 13 Overview Setting Up Option 352 Outdoor Mapping Using Other Modes IMPORTANT See...

Page 483: ...oom opens a menu of Zoom In and Zoom Out softkeys Press Pan Opens a menu of softkeys to move East West North and South on the current displayed map area Save Image PNG To save the current map as a PNG file When selected the Save Map picture file feature opens to the current storage location default INTERNAL where you can name and save your current displayed map area 3 Enter a Zoom by using the RPG...

Page 484: ...door and Outdoor Mapping Option 352 Requires Spectrum Analyzer Mode Option 233 and GPS Receiver Option 307 How to Set Up Mapping Settings 5 Repeat step 4 for Longitude Figure 16 14 Example of Current Area Center Latitude and Longitude Values ...

Page 485: ...d either SA mode Option 233 Mixed Analyzers or OTA 5G NR 5G NR EVM Conducted Option 378 Optional For setting up GPS Option 307 refer to Chapter 31 System Settings and then GNSS GPS and GPS on page 784 2 Plan your Indoor Map a Save mapping pictures to the FieldFox using USB storage device SD card or connect to LAN with internet and download b Import floor plans or site maps to the FieldFox from pic...

Page 486: ...Logging softkeys and set the Record Settings Record Save Recall and More Indoor Map Data Logging or Signal Locate For Outdoor Mapping Record Save Recall File Folder Default System Default Sets the default User Folder path List files csv and kml are save recalled to CurrentDevice RecordPlayback CS Record Play files are save recalled to CurrentDevice RecordPlayback CS Or System Sets the User Folder ...

Page 487: ...nter is in desired position to enter a new data point e Repeat step c and d for all other required position locations Else continue to next step f When done press Back If you used the Pan softkey menu More Save Map to save results to a KDAT file If a Error This data point not ready is displayed verify the measurement setup including the antenna setup if applicable and ensure the measurement is suc...

Page 488: ... Guide Indoor and Outdoor Mapping Option 352 Requires Spectrum Analyzer Mode Option 233 and GPS Receiver Option 307 How to Set Up Mapping Settings Figure 16 15 Example of an Indoor Building Map with Single Icon and Bore Sight Pointer ...

Page 489: ...ixed Analyzers or OTA 5G NR 5G NR EVM Conducted Option 378 2 Plan the area you want to map with GPS Option 307 enabled a Optional Can be done later Save mapping pictures to the FieldFox using USB storage device SD card or connect to LAN with internet and download Refer to How to Install Node js and Running the FieldFox Mapping Software on page 472 For FTP refer to MMEM SCPI in the FieldFox Program...

Page 490: ...7 Utilities Mapping Map Explorer Get Maps then Move the position cursor to current location Then use the arrows the rotary knob or numeric keypad locate the position cursor to current location Then Edit to change the value of Zoom If a zoom value is not found the FieldFox ignores the entered value and returns to the previously displayed Zoom setting i e values must be between 4 and 17 Latitude If ...

Page 491: ... File and change latitude and longitude values to view site maps from pictures KML 3 If not done connect your equipment similar to Chapter 14 5G Rapid Prototype Phased Array Antenna Option 360 Chapter 15 USB Antennas Full Capability Requires EMF Option 358 and either SA mode Option 233 Mixed Analyzers or OTA 5G NR 5G NR EVM Conducted Option 378 and to Figure 14 1 on page 419 See also For setting u...

Page 492: ...d from USB SD card or internal drive if the maps are saved to the FieldFox Connect the FieldFox to the LAN with internet access and use the FieldFox Mapping software to download a maps image zip file If necessary you can download the maps at later time 5 Using Discrete Colors softkey Menu set the red maximum and blue minimum values For setting color coded bar scale preferences refer to Chapter 31 ...

Page 493: ...s Discrete Colors Discrete Colors and change value as desired Maximum 6 Figure 16 18 Display Example Color Coded Bar Scale Before Selecting x6 Colors Figure 16 19 Display Example Color Coded Bar Scale After Selecting x6 Colors 6 Verify you have enabled GPS Refer to your measurements procedure and to GNSS GPS and GPS on page 784 7 Then press Esc Back Trace 6 More required for OTA only Data Logging ...

Page 494: ...ord Play files are save recalled to CurrentDevice UserSelectedFolder Refer to File Management on page 803 Then File Type KML or CSV default Then Save Log File or Then Recall Log File Optional Auto Save ON default OFF To avoid loss of data if power loss occurs Then Back 8 Set up the outdoor mapping a Press Trace 6 Data Logging b Then press Record c When done Stop d Save results to KML file 9 View K...

Page 495: ...n 307 How to Set Up Mapping Settings Figure 16 20 FieldFox Display with View Map ON and OFF Displayed Import and Play back KML Files into 3rd Party Software Example Google Earth with Animation Tool Features Use the Playback Slider to replay measurement results See also Google Maps and or Google Earth s help Refer to Figure 16 21 on page 496 ...

Page 496: ...gs Open the FieldFox KML file in Google Earth The time slider appears in upper left of the map Manual Mode Move the time slider cursor to see color coded icons pop up according to the timestamp Loop mode has a Fast Slow Replay Option Click on each color coded balloon to see the table of measurement results for that location Figure 16 21 Importing a KML File Into Google Earth ...

Page 497: ...ogging If you have already setup your outdoor or indoor map logging Then Record to being logging data or Then Play If this softkey is active you are currently recording or you have recalled a previously stored data logging file When Play is pressed then choose Cursor Position use this softkey to move the data log play cursor in the current data log being played i e Cursor Position is active only w...

Page 498: ... Recall Opens a softkey menu to manage your data logging filenames and file folder locations Save Log File or Recall Log File if you have previously stored data File Folder Default System Default Default or File Type Default CSV KML or DREC DREC applies to Option 360 only Auto Save OFF ON To enable disable auto save to protect your data if power is lost Default OFF Then Back 3 Then choose from the...

Page 499: ...oose Red Blue Limits Opens a softkey menu to assign power values to the red high power limits and blue low power limits heat map display limits defaults Red Limit 20 dBm Blue limit 90 dBm Zoom Zoom in out on the map displayed Labels Icons Opens a softkey menu to enable disable map data point labels and icon types Then choose from the following Channel 1 Sets the data channel being recorded Availab...

Page 500: ...and map data to previously saved files Re save them and resume data collection at a later time After a png is opened for a new recording or a kdat file is recalled for editing and displayed on the FieldFox then choose from the following Icons Flag Point Line Sets the type of icon that is used to display a map s data points Record Play files are saved to If File Folder is set to Default then Record...

Page 501: ...ls and icons A KDAT file is the file FieldFox uses to recall an indoor mapping data logging session Recall Indoor Log File It s an archive file that contains information about the original image file the location of the recorded data on the image and the actual recorded data KDAT files can only be opened with FieldFox itself KDAT files cannot be opened via Data Link An auxiliary CSV data file is g...

Page 502: ...ions Save Image and Back Labels Icons Opens a softkey menu where you can enable disable and select map icons Labels OFF ON Enables Disables map data point labels When enabled a label is displayed for every map data point e g Data 1 When disabled labels are not displayed for the map data points Icons Flag Point Line Sets the type of icon that is used to display a map s data points Pointer OFF ON En...

Page 503: ...softkey menu to enable you to save your map kdat or your image png Save Map Opens Save the log file where you can name and save your map file kDAT Softkey is only visible when data is recorded on a png file using Labels Icons feature and the Record softkey Save Image PNG Saves the current displayed map to a png file default filename is MapImageFile This softkey is on active when View Maps O Back R...

Page 504: ...k Outdoor Mapping Only Export KML File Into 3rd Party Mapping Software Export KML file into 3rd party mapping software i e Google Map or Google Earth Refer to Import and Play back KML Files into 3rd Party Software Example Google Earth with Animation Tool on page 495 Record Play files are saved to If File Folder is set to Default then Record Play files are save recalled to CurrentDevice RecordPlayb...

Page 505: ... page 511 Screen Annotation During a record or playback session the following is displayed in the top center area of the screen Rec 55 55 2018 12 31 03 26 11 PM where 55 55 is the current and total trace number currently trace is 55 of 55 total scans 2018 12 3103 26 11 PM is the date and time of recording The name of a recording can be changed using Manage Sessions Learn more in To change Data Log...

Page 506: ... or dbuA Default Units dBm See Figure 16 22 on page 506 Figure 16 22 Field Strength Annotation that can be Recorded and Played Back If Data Logging or playback is not occurring when you think it should check the following Is the sweep in HOLD upper left annotation or check the Sweep menu for Continuous set to OFF Is Recording or Playback Paused mid left annotation Is the Data Logging measurement I...

Page 507: ...r Press Recall Indoor Log File if you have previously stored data kdat You can recall a log file and add delete directional finding lines of bearing and map data to previously saved files Re save them and resume data collection at a later time Indoor and Outdoor Data Logging Then Signal Locate Then Add Point adds a new bearing location then Press Direction Line OFF ON Enables disables the line of ...

Page 508: ...en you can directly enter a new angle or line length or use the arrows or the rotary knob to edit these values Press Direction Line OFF ON Enables disables the direction line default OFF Press Adjust Angle Enters the angle of the current point s line Rotate the line about the current point your current location to point towards the highest signal strength seen by your directional antenna You can r...

Page 509: ...Guide 509 Indoor and Outdoor Mapping Option 352 Requires Spectrum Analyzer Mode Option 233 and GPS Receiver Option 307 How to Use Data Logging Option 352 Figure 16 23 Directional Finding DF Bearing Outdoor Map Data Logging Example ...

Page 510: ...How to Record a Data Log Outdoor Logging Only For Indoor Logging refer to Enabling and Setting Up Indoor Map Logging on page 500 Press Trace 6 Then Data Logging Then Record Outdoor Logging Only Data Log Play files are saved to If File Folder is set to Default then Data Log Play files are save recalled to CurrentDevice RecordPlayback Current mode If File Folders are set to System then Data Log Play...

Page 511: ...le to save the current Table data i e default save device is Internal Then Record Settings Outdoor Mapping only To change your measurement interval settings Learn more refer to To change Data Logging Configuration settings on page 511 To change Data Logging Configuration settings Press Trace 6 Then Data Logging then choose Then Record Settings Outdoor Mapping only Optional Then Meas Interval ON Th...

Page 512: ... from the following Pause Resume Press to continue playing Stop Immediately stops playback Then choose from the following Play Start playback from start of scan Recall Log File Opens a list of stored data files Select a file to playback Recall File Back Cursor Position use this softkey to move the data log play cursor in the current data log being played i e Cursor Position is active only when pla...

Page 513: ...ooting Port 5000 in Use Error on page 514 Miscellaneous Mapping Errors on page 517 IMPORTANT Do not change the default name of the directory path for downloading the Node js program because FieldFox uses the default program path name to run the Mapping feature Refer to Figure 16 4 Examples of Web Browsers that not supported are Internet Explorer 6 7 and 8 ...

Page 514: ...nna Settings have been entered The FieldFox s displayed annotation indicates Check LAN connection Check IP address during pinging Verify The LAN address for first 3 fields matches the Static IP address of FieldFox For example if the Ball Antenna IP address is 192 168 1 10 set FieldFox Static IP address to 192 168 1 xx xx must be different number than shown in the last field of the for Ball Antenna...

Page 515: ...ermination of the batch job and close Refer to Figure 16 25 Figure 16 25 Example of This port because 5000 is in use Error If the Map Support Tool displays the error shown in Figure 16 26 it means the selected map area is outside the current viewable area You can either Move the map area by clicking the left mouse to the area you have selected or Click the Red X to cancel the download Figure 16 26...

Page 516: ...If you see this message after opening and running the Run bat file ignore it and follow the procedure listed in Downloading and Using the FieldFox Map Support Tool on page 474 If you are unsuccessful in opening and running the FieldFox Map Support Tool when using the Run bat then refer to Contacting Keysight on page 5 Refer to Figure 16 27 Figure 16 27 Example of UPDATE AVAILABLE Message ...

Page 517: ...nd Figure 16 29 on page 517 If you see a fetch checkerboard or other map errors 1 Close your current browser window with OpenStreetMaps org 2 Open a different browser 3 If necessary re run the FieldFox mapping script run bat to re copy the localhost 5000 address into your clipboard 4 Paste the localhost 5000 address into a different browser and use OpenStreeMaps org to save your Map image zip file...

Page 518: ...518 Keysight N9938 90006 User s Guide Indoor and Outdoor Mapping Option 352 Requires Spectrum Analyzer Mode Option 233 and GPS Receiver Option 307 Troubleshooting ...

Page 519: ...t 2 connector The FieldFox requires Option 390 for TDoA direction finding and GPS Option 307 installed To install the Pathwave Keysight Signal Management Software KSMS on your PC refer to https www keysight com us en products software pathwave test softwar e pathwave measurements html For help using the Pathwave Keysight Signal Management Software KSMS refer to the KSMS web help https www keysight...

Page 520: ...f Arrival TDOA Requires Option 390 on page 521 Troubleshooting on page 522 GPS lock Errors on page 522 Other Features Available Alignments SA chapter Alignments on page 204 External Gain SA chapter External Gain on page 158 Scale Settings Data Analysis chapter All about Scale Settings on page 752 Why and When to Calibrate on page 126 Chapter 31 System Settings Changing display colors Chapter 32 Fi...

Page 521: ...s set up as receivers sensors capable of detecting the signal of interest All FieldFox units are synchronized using a GPS signal The Spectrum measured by all FieldFox units selected is measured and used to identify the signal of interest which is then geo located using TDoA Learn more about time difference of arrival TDoA Option 390 by referring to S9910A Keysight Signal Measurement Software KSMS ...

Page 522: ...ake some time to achieve lock condition Allow enough time for the GNSS receivers to achieve lock after activating them on all FieldFox units The following error message is displayed when the GNSS receiver is unlocked Figure 17 1 GPS Error Messages Possible solutions Running the test again after this error is usually successful because the GNSS receiver would have enough time to lock Alternatively ...

Page 523: ...t com us en products software pathwave test softwar e 89600 vsa software html 1 To order the 89600 VSA Software refer to https www keysight com find assist 89600 VSA via the Remote Server feature are compatible with the frequency converter heads but cannot apply or edit the frequency head corrections Refer to Utilities on page 762 The FieldFox can be used with an OML frequency extender Refer to Ut...

Page 524: ...vant when connected via LAN to the 89600 VSA software on your remote PC In Remote Server mode only System 7 hardkey lets you change the system settings Esc escape hardkey lets you forcefully disconnect from the PC based software To gracefully disconnect recommended from the software exit using the PC based software s disconnect option or shutdown the software Refer to Initial Waiting for a Connect...

Page 525: ...sed procedures refer to 89600 VSA Software Overview Requires N991xB 3xB 5xB 6xB and SA Option 233 on page 527 Figure 18 1 Initial Waiting for a Connection from a PC based and Compatible Licensed Software or No Remote Connection The graphic above shows the FieldFox in the process of connecting to a PC based and compatible licensed software IMPORTANT When using a frequency converter head with remote...

Page 526: ...the frequency converter head settings while using the VSA first it is necessary to disconnect from the 89600A VSA 1 Disconnect from the 89600A VSA software using the VSA s disconnect icon 2 Change modes to another frequency converter compatible mode e g SA RTSA IQA 3 Change the settings on your frequency converter head The frequency range in the VSA should always reflect the frequency converter he...

Page 527: ...GSM EDGE cdma2000 1xEV DO TD SCDMA Wireless connectivity 802 11ax 802 11n ac 802 11a b g j p 802 16 WiMAX fixed mobile 802 15 4 Wi SUN RFID Digital satellite video and other satellite signals radar LMDS Up to 400K bin FFT for the highest resolution spectrum analysis A full suite of time domain analysis tools including signal capture and playback time gating and CCDF measurements Unlimited trace di...

Page 528: ...phical user interface For a comprehensive FieldFox VSA mode help refer to http rfmw em keysight com wireless helpfiles 89600B WebHelp 89600 ht m For additional information on the 89600 VSA Software brochure refer to https www keysight com us en assets 7018 02714 brochures 5990 6553 pdf For Technical Overview refer to https www keysight com us en assets 7018 02679 technical overviews 5 990 6405 pdf...

Page 529: ...Common Settings for Waterfall and Spectrogram on page 532 Waterfall Display on page 533 About Sessions on page 535 FieldFox Setting Changes during Record and Playback on page 536 About State and User Tags on page 537 How to Record a Session on page 538 How to Playback a Session on page 539 Recording Configuration on page 539 Playback Configuration on page 543 Manage Sessions on page 543 Record Pla...

Page 530: ... can be recorded from or played back into any measurement type such as Channel Power or Occupied BW or any display type such as Spectrogram and Waterfall See How to Record a Session on page 538 to learn how to save traces Spectrogram Display SA Option Spectrogram draws the most recent trace record at the bottom of the stack of previously drawn trace records Drawing the live trace on the display is...

Page 531: ...O graticules Total trace records 340 Full Screen Displays the spectrogram with NO data trace Total trace records 340 Top Displays the data trace below the spectrogram Total trace records 130 Bottom Displays the data trace above the spectrogram Total trace records 130 How to create Time Markers SA Only Use Time Markers to determine the elapsed time between any two displayed records The most recent ...

Page 532: ...er levels Adjust the Red and Blue limits to the power levels that you expect to measure The Blue limit must always be less than the Red limit For SA Mode Press Meas Setup 4 Then Spectrogram Settings or Waterfall Settings Then choose from the following Red Limit Using the arrows rotary knob or keypad select the HIGHEST power level that you expect to measure This power level and those measured highe...

Page 533: ... individual trace and therefore the total elapsed time that can appear on the screen in Waterfall display Frequency Range Learn more in Frequency Range on page 151 Resolution BW and Video BW Learn more in Resolution Bandwidth Res BW on page 185 and Video Bandwidth Video BW on page 186 Sweep Time Acquisition Learn more in Sweep Acquisition on page 191 Resolution Number of Points Learn more in Point...

Page 534: ...User s Guide Interference Analyzer SA Mode Option 236 Spectrogram and Waterfall Displays Wide Angle Moderate angle with increased space between records Learn how to set Red and Blue Limits in Set Red and Blue Limits on page 532 ...

Page 535: ...You close the session when finished recording or playing A session is also closed when the FieldFox is Preset or Mode Preset an Instrument State is recalled or when Mode is changed from SA Each session is saved as a folder containing a set of files on the specified storage device How long can a recording session last There are many variables that determine the possible length of a recording sessio...

Page 536: ...of the following State settings are changed during recording the State counter is incremented About State and User Tags on page 537 and the settings are saved to the Session file along with the first trace to be recorded with the new setting During playback the trace and display annotation will reflect the change on the screen State settings Refer to Table 19 1 for a list of the applicable state s...

Page 537: ... Markers can be activated and moved to help analyze recorded data However marker position control is only available when playback is Paused Field Strength Corrections is saved with the session file and it is also allowed during playback Learn about this Field Strength Corrections in Field Strength Measurements on page 161 Frequency Counter at Marker is NOT allowed during Recording or Playback Lear...

Page 538: ...the playback display Learn more in GPS Distance Settings on page 776 Is the sweep in HOLD upper left annotation Is Recording or Playback Paused mid left annotation Is the Record or Playback Interval set too long Configuration settings How to Record a Session Press Trace 6 Then Record Playback SA Only Optionally set resolution points Learn how in Points on page 201 This can NOT be changed after a s...

Page 539: ...g Pause Resume Press to continue playing Playback State Tag Allows you to continue playback from a state tag or scroll through the state tags Enter a value between 1 and the total number of state tags using the numeric keypad arrows or the rotary knob Active when playback is paused Learn more in About State and User Tags in About State and User Tags on page 537 Playback Trace Activated automatical...

Page 540: ... Default is MAX which is to record indefinitely Enter a value between 1s and 1 Ms million seconds using the numeric keypad arrows or the rotary knob When set a timer appears during recording in the lower left corner which counts DOWN from the specified time Record Source Sets where in the FieldFox data flow data is recorded Learn more in Record Source on page 542 Choose from the following RawMeas ...

Page 541: ...es that exceed the limit set Segment Count to 1 To record ALL traces after a limit is exceeded set Segment Count OFF When used with Record Time the timer counts down even when traces are not being recorded limits are not being exceeded Recording starts when a limit is exceeded and stops when the timer reaches 0 When used with Record Interval a trace is recorded when a limit is exceeded then no rec...

Page 542: ...Mask Limit Line table in All about Limit Lines on page 741 Save Mask Saves the current mask to a file Recall Mask Loads a mask file Record Source For SA mode the simplest way to use Record Playback is to record RawMeas data which can then be played back into all of the current Trace States However for more complicated processing refer to the following diagrams These figures illustrate where in the...

Page 543: ... Configuration By default trace sweeps are played back as fast as the trace can be drawn on the screen The following setting allows you to slow playback In addition you can manually scroll through individual traces using Playback Trace or scroll through State and User Tags using Playback State Tag Learn more in How to Playback a Session in How to Playback a Session on page 539 To slow playback of ...

Page 544: ...elected session from the list Copy Copies the selected session to a different storage device or the same storage device with Copy n _ appended to the beginning of the name so that duplication is prevented Copy All Copies ALL of the listed sessions to a different storage device or the same storage device with Copy n _ appended to the beginning of the names so that duplication is prevented Delete Al...

Page 545: ...e Play the Max Hold recording into a Clear Write trace to see the data exactly as it was recorded Press Trace 6 then with Trace 1 and press State then Clr Wr Then Record Playback Then Play Play the Max Hold recording into a Max Hold trace to show the accumulation of Max Hold activity over the entire recording Press Trace 6 then with Trace 1 and press State then Max Hold Then Record Player Then Pla...

Page 546: ...546 Keysight N9938 90006 User s Guide Interference Analyzer SA Mode Option 236 Record Playback SA Option ...

Page 547: ...nly models The FieldFox source is routed internally to Port 1 and used to stimulate a Device Under Test DUT The energy that is reflected off the DUT is measured and displayed on the screen Option 320 requires Option 220 Tracking Generator N9938B models require Option 100 3 5 mm connectors and Option 220 Option 100 3 5 mm connectors must be installed by the factory Option 100 is only available on N...

Page 548: ... measurements are CalReady Learn more in CalReady on page 127 In addition Normalization is available Learn how Normalize on page 550 However other calibration types are NOT offered In this Chapter How to select Reflection Mode on page 550 Measurement Selection on page 550 Normalize on page 550 ...

Page 549: ...hey function in CAT mode Frequency Range on page 53 Scale Settings on page 53 Averaging on page 54 Single or Continuous Measure on page 55 Resolution Number of Data Points on page 56 Sweep Time on page 56 Output Power on page 57 Interference Rejection on page 58 All about Markers on page 726 All about Limit Lines on page 741 ...

Page 550: ...gher the trace is on the screen the more energy being reflected back to the FieldFox VSWR Voltage Standing Wave Ratio also known as SWR 1 port reflection measurement that displays the ratio of the maximum reflected voltage over the minimum reflected voltage The higher the trace is on the screen the more energy being reflected back to the FieldFox Normalize Normalization can be used to effectively ...

Page 551: ...ts are to be normalized Press Trace 6 Then Normalize The yellow data trace displays the current measurement with trace math applied The math operation symbol D M is displayed on the lower left corner of the screen Learn more about Trace Math in All about Trace Math on page 750 Data interpolation is NOT supported If the Resolution setting is changed with Trace Math enabled the FieldFox will disable...

Page 552: ...552 Keysight N9938 90006 User s Guide Reflection Mode SA Models Option 320 Reflection Mode Settings ...

Page 553: ...selectable frequency band A power sensor is NOT required In this Chapter See Also The following Built in Power Meter settings are identical to the standard Power Meter settings Frequency Span Step on page 555 Radio Standard on page 556 How to set Attenuation on page 556 Scale on page 565 Relative and Offset Power Measurements on page 566 Display Units on page 567 Averaging on page 568 Single or Co...

Page 554: ...06 User s Guide Built in Power Meter Mode Option 310 Limits on page 569 The following Built in Power Meter settings are identical to SA Mode settings Radio Standard on page 556 How to Access Individual Alignments on page 208 ...

Page 555: ...which power is detected and displayed The maximum measurement span is 100 MHz How to enter center frequency step size and span The default frequency is 50 MHz Press Freq Dist Then Center Then type a value using the numeric keypad Then press a multiplier key Learn about multiplier abbreviations Multiplier Abbreviations on page 46 The current frequency f is shown on the FieldFox screen Optionally us...

Page 556: ...ard Then select a standard using the arrows or rotary knob and press Enter Attenuation The Attenuation setting controls the power level into the FieldFox To compare Built in Power Meter Mode measurements to SA Channel Power measurements use the same attenuation settings Built in Power Meter Mode defaults to 30 dB attenuation while SA mode defaults to 10 dB attention In Built in Power Meter the att...

Page 557: ... the FieldFox screen In this Chapter Supported Power Sensors on page 559 How to Connect a USB Power Sensor on page 559 How to Connect a LAN Power Sensor on page 560 How to select Power Meter Mode on page 562 Average Peak on page 563 Zeroing on page 563 Frequency on page 564 Source Control on page 564 Source Power Measurements on page 566 Relative and Offset Power Measurements on page 566 Display U...

Page 558: ...67 Averaging on page 568 Single or Continuous Measure on page 568 Step Detection Mode on page 569 Limits on page 569 Troubleshooting on page 570 FOPS Settings on page 577 All about Markers on page 726 All about Limit Lines on page 741 All about Trace Math on page 750 All about Scale Settings on page 752 ...

Page 559: ...ering Time Gated Burst Power Measurement Power Sweep Operation and Frequency Sweep Operation External Zeroing is NOT allowed on the U2020 X series Power Sensors Please refer to your USB and LAN Power Sensor User s Guide and observe the damage levels of your device IMPORTANT When a USB power sensor is initially connected to the FieldFox it may take 10 seconds for the USB power sensor to finish zero...

Page 560: ...shipped from Keysight This allows the LAN sensor to automatically obtain an address on the network The LAN sensor communicates with the DHCP server to obtain the LAN interface configuration If the DHCP server is not detected then either the DHCP server is not present or it does not allow the LAN sensor to obtain an IP address The LAN sensor will then try to obtain the LAN configuration using AutoI...

Page 561: ...Fox to identify a LAN power sensor This softkey is inactive Sensor I D is set to IP Address Press LAN IP Addrs Not Specified to enter an IP address to enable the FieldFox to identify a LAN power sensor This softkey is inactive Sensor I D is set to DNS Ser Num Press Reconnect While it is not recommended to remove the LAN cable from either the Sensor or the FieldFox during a LAN Sensor based measure...

Page 562: ...and LAN Power Meter Settings Select Power Meter Mode before making any setting in this section How to select Power Meter Mode Press Mode_ Then Power Meter USB LAN Sensor IMPORTANT When a LAN power sensor is initially connected to the LAN it may take 10 seconds for the LAN power sensor to finish zeroing and for the FieldFox to recognize the LAN power sensor If your LAN power sensor is not operating...

Page 563: ...an internal switch Internal Zeroing does NOT require that the power source be turned OFF For highest measurement accuracy when measuring power levels below 30 dBm External Zeroing should be performed During External Zeroing the power source MUST be turned OFF or the power sensor disconnected from the power source device under test Power is OFF when power sensor measurements are below 60 dBm 50 dBm...

Page 564: ...s 50 MHz Then press a multiplier key Learn about multiplier abbreviations in Multiplier Abbreviations on page 46 The current frequency is shown on the FieldFox screen Source Control This feature may require an option on some FieldFox models With the FieldFox internal source enabled these settings allow you to make simple absolute power measurements The source and the power sensor can be physically...

Page 565: ...be changed Although the scale settings are limited you can view measurements beyond these settings by performing Autoscale How to Scale the Power Meter Display These softkeys are not available when Rx Power is enabled See also Source Power Measurements on page 566 Manually Press Scale Amptd Then choose from the following Scale Min Sets the low power level of the power meter display Type a number a...

Page 566: ...f the source and receiver power Press Src Power Memory to store the source power measurement Press Gain applies the stored source power measure Relative and Offset Power Measurements Power measurements can be made that are relative to another reading or that are offset by a fixed value Use Relative to measure the difference between power levels Use Offset to account for components or a long length...

Page 567: ...alues are limited to 100 dB default 0 000 dB Display Units Select whether to display power in dBm or Watts When making relative power measurements these change to dB and These softkeys are not available when Rx Power is enabled See also Source Power Measurements on page 566 How to set Power Meter display units Press Meas Setup 4 or Scale Amptd More Then Unit Then choose from the following dBm dB S...

Page 568: ...ayed When the number is changed Averaging is automatically set to Man Single or Continuous Measure This setting determines whether the FieldFox measures continuously or only once each time the Single button is pressed Use Single to conserve battery power or to allow you to save or analyze a specific measurement This setting can be changed at any time without affecting calibration accuracy How to s...

Page 569: ...Enables step detection default setting OFF Disables step detection Limits In Power Meter Mode Minimum and Maximum limits set a visible range of acceptable readings between these two values Readings that are below the minimum or above the maximum are clearly visible on the power meter display How to set Limits Press Limit 8 Then choose from the following Min Limit OFF ON Toggles the display of the ...

Page 570: ...x has obtained its IP address via the connection A self assigned IP address may be shown briefly while FieldFox tries to get connected to the LAN again after it has been removed Before proceeding to the next step ensure the correct IP has been obtained by the FieldFox a You can view the IP address by selecting System System Configuration More LAN to display the current IP address b Press Done to e...

Page 571: ...ed The other LED next to it should be off as well c Then press Meas Setup 4 More LAN Sensor Settings Reconnect The LEDs may turn on and off during the reconnection and the sensor may report Zeroing or Attempting to connect messages This reconnection attempt could take up to a minute or so The data acquisition will resume once the connection is re established ...

Page 572: ...572 Keysight N9938 90006 User s Guide Power Meter USB LAN Mode Option 302 Troubleshooting ...

Page 573: ... installed you can send a signal with the FieldFox internal source at one frequency and measure this signal with a Keysight U Series USB Power Sensor at another frequency Figure 23 1 Display for FOPS In this Chapter How to select Power Meter USB Sensor on page 577 Measurement Selection on page 577 Sweep Type and Frequency on page 578 Power Sensor Settling on page 580 Sweep Settings on page 580 ...

Page 574: ...574 Keysight N9938 90006 User s Guide Frequency Offset Using Power Sensor FOPS Option 208 See Also Amplitude Markers on page 581 Trace Math on page 581 All about Trace Math on page 750 ...

Page 575: ...ent The FieldFox source stimulates the DUT and the power sensor is used as the measurement receiver Since power sensors are inherently broadband devices not frequency selective it is your responsibility to ensure that ONLY the signal of interest is present at the power sensor input and that all others signals are filtered appropriately For some DUTs the output frequency may sweep in a reverse dire...

Page 576: ...s Guide Frequency Offset Using Power Sensor FOPS Option 208 Overview The dynamic range with FOPS may be significantly different when using various power sensors In general the lower frequency range sensors have better dynamic range ...

Page 577: ... a normalization cal this selection guides you through the following steps to make a measurement at the reference plane and then store the data trace into memory Connect the power sensor to the measurement reference plane This is the location to where power measurements are to be referenced For example to measure only the conversion loss through a converter attach the power sensor to the cable tha...

Page 578: ...ress Freq Dist Then Sweep Type Then choose from the following CW Used to make standard non offset power meter measurements at a single frequency Learn more in USB and LAN Power Meter Settings on page 562 Swept Used to make swept FOPS measurements Then enter source Src frequencies as either Center and Span or Start and Stop Both methods set the FieldFox internal source sweep range out the Port 1 RF...

Page 579: ...er the Receiver Start and Stop frequencies Then press Calculate Offset Press Rx Sweep to select the receiver sweep direction Fwd Used for systems for which the output frequency is Offs Src The output frequency of the DUT and the receiver sweeps in the same direction as the source Rev Used for systems for which the output frequency is Offs Src The output frequency of the DUT and the receiver sweeps...

Page 580: ...ensor settling Press BW 2 Then Tolerance Enter a value in dB between 0 and 10 using the numeric keypad the arrows or the rotary knob Tolerance of 0 will never be achieved so the Max Readings will always be made Press Enter Then Max Readings Enter a value between 1 and 20 using the numeric keypad the arrows or the rotary knob Press Enter Sweep Settings These settings provide added control of the FO...

Page 581: ... make Amplitude Marker settings Press Marker Then More Then Ampl Markers Then choose from the following OFF Amplitude markers are NOT displayed ON Amplitude markers ARE displayed at their previous positions Then Ampl Mkr 1 or 2 Enter a value in dBm for the marker using the numeric keypad the arrows or the rotary knob Press Delta Ampl Mkr Then choose from the following ON AmplMkr 2 value is relativ...

Page 582: ...582 Keysight N9938 90006 User s Guide Frequency Offset Using Power Sensor FOPS Option 208 FOPS Settings 3 View Data Memory 4 Meas Src Power ...

Page 583: ...rain of pulses at the RF input This data is queried from the USB and LAN Power Sensor and displayed on the FieldFox screen You can then analyze the data using several selectable settings Refer to Table 24 1 on page 585 In this Chapter Supported Power Sensors on page 585 Measurement Selection on page 589 Frequency Time on page 589 Zoom Window on page 590 Scale on page 591 Averaging on page 591 Vide...

Page 584: ...surements Mode are discussed in detail in the following documents USB Power Sensorsa Keysight U2020 X Series USB Peak Power Sensors User s Guide U2021 90002 https www keysight com us en assets 9018 02579 user manuals 9018 02 579 pdf Keysight U2020 X Series USB Peak Power Sensors Programmer s Guide U2021 90003 https www keysight com us en assets 9018 06011 programming guides 9 018 06011 pdf LAN Pow...

Page 585: ...ause one or both modes to hang or at least report inaccurate data Supported Using one X Series Average Power Sensor connected to the top USB port for Power Meter Mode and one X Series Peak Power Sensor connected to the bottom USB port for Pulse Measurement Mode USB and LAN Power Sensorsa Best Practices For Making The Most Accurate Radar Pulse Measurements https www keysight com us en assets 7018 0...

Page 586: ...tails refer to your LAN power sensor s User s Guide Connect the LAN sensor via any of the following LAN operating modes Dynamic IP Dynamic Host Configuration Protocol or DHCP Auto IP Local PC control or isolated non site LAN Static IP Manual mode The default LAN operating mode of the LAN sensor is Dynamic IP Dynamic IP and Auto IP are enabled on the LAN sensor shipped from Keysight This allows the...

Page 587: ...AN power sensor IP Address Enter the IP address of your LAN power sensor as a way for the FieldFox to connect with your LAN power sensor Press DNS Ser Num to enter a DNS serial number s last 5 digits to enable the FieldFox to identify a LAN power sensor This softkey is inactive Sensor I D is set to IP Address Press LAN IP Addrs Not Specified to enter an IP address to enable the FieldFox to identif...

Page 588: ...wer sensor This is the case when in Hold mode or when NOT in Power Meter Mode IMPORTANT When a LAN power sensor is initially connected to the LAN it may take 10 seconds for the LAN power sensor to finish zeroing and for the FieldFox to recognize the LAN power sensor If your LAN power sensor is not operating as expected Verify the latest firmware is loaded on the FieldFox Refer to www keysight com ...

Page 589: ...r display Peak Peak power Meter display Pk to Avg Displays the difference between the above two measurements Meter display Trace Graph default The primary trace Tr 1 plots pulse data in amplitude versus time Optionally you can enable a secondary zoom trace Learn how in Zoom Window on page 590 When a Meter display measurement is selected the following Pulse Measurement Mode settings are identical t...

Page 590: ... detects a pulse signal or T zero Follow each by entering a value using the numeric keypad the arrows or the rotary knob After using the keypad select a multiplier key Learn about multiplier abbreviations Zoom Window When Trace Graph is selected as the measurement a secondary Zoom Trace can be used to view a zoomed portion of Tr 1 When Zoom Window is ON blue vertical posts appear on Tr 1 to indica...

Page 591: ...to comfortably fit the Minimum and Maximum amplitude of the trace on the screen Set Scale acquisition and Reference Position Scale Manually enter a scale per division to view specific areas of the trace Ref Level Manually set the value of the reference line Enter a negative value by pressing Run Hold either before or after typing a value Ref Pos Manually set the position of the reference line Valu...

Page 592: ...verages setting Off Averaging is OFF Num Averages Select a value using the numeric keypad then press Enter Video Bandwidth The Video Bandwidth setting enables an FIR finite impulse response filter within the USB Power Sensor The filter setting affects the appearance of the trace results Video Bandwidth is allowed for all pulse measurements How to set Video Bandwidth Press BW 2 Then Video Bandwidth...

Page 593: ... trigger signal is present This is the typical setting when battery power is not critical You can also use Run Hold to toggle between Single and Continuous Resolution Resolution is the number of individual acquisitions that occur in the USB Power Sensor This data is read by the FieldFox and plotted across the X axis to form a trace More data points increases measurement resolution However more dat...

Page 594: ...input The following Trigger settings determine the validity of the trigger signal External The USB Power Sensor acquires data when a valid TTL signal is detected at the USB Power Sensor external trigger input Trigger Edge This setting determines which edge of a trigger signal initiates data acquisition Press Sweep 3 Then Trigger Then Trigger Edge Then choose from the following Pos Acquisition is t...

Page 595: ... current trigger level setting Data acquisition occurs when the RF input signal crosses the line This setting can be used with either Positive or Negative edge triggering Qualification Use the qualification setting to avoid triggering on false pulses and to aid in stabilizing the power trace The qualification time defines the time the signal has to remain below the trigger threshold before a trans...

Page 596: ...ns minimum 25 ns maximum 50 μs Trigger Settings Annotation Trigger settings are annotated on the FieldFox screen as highlighted in red in the following image In the previous graphic the settings are Trig Level 10 dBm Trig Type Int Pos Slope Delay Marker Settings Markers are not allowed with Meter style measurements Markers are displayed on Tr 1 and also on the zoom trace if the marker is within th...

Page 597: ...th the pulse measurement traces How to make Amplitude Marker settings Press Marker Then More Then Ampl Markers Then choose from the following OFF Amplitude markers are NOT displayed ON Amplitude markers ARE displayed at their previous positions Then Ampl Mkr 1 or 2 Enter a value in dBm for the marker using the numeric keypad the arrows or the rotary knob Press Delta Ampl Mkr Then choose from the f...

Page 598: ... in dB Delta markers are created and placed at the Peak and at the specified value AFTER the Peak Auto Analysis Auto Analysis reports the following TEN pulse measurements Rise and Fall time in Marker Search uses different criteria than in Auto Analysis and will therefore result in different reported values For more information on peak power measurements refer to the documentation for your power se...

Page 599: ...hen Pulse Top Then enter a percent value between 0 and 100 using the numeric keypad the arrows or the rotary knob When set to 10 10 dB down from the 100 acquisition is reported When set to 50 3 dB down from the 100 acquisition is reported When set to 90 0 5 dB down from the 100 acquisition is reported Grid Enables and disables the display of a 10 x 10 grid on the FieldFox screen How to enable Grid...

Page 600: ...It can be displayed on the screen by itself or with a pulse trace for comparison purposes The Tr 1 data trace is displayed in yellow The memory trace is displayed in blue How to display data and memory traces Press Trace 6 Then Trace Memory Then Data Mem to store the current live trace into memory A beep sounds to confirm the data trace has been saved to memory There is no display annotation that ...

Page 601: ...asurement displays the electrical length in both Magnitude and Phase Figure 25 1 Display for the 1 Port Cable Trimming measurement In this Chapter Overview on page 603 Measurement Selection on page 604 Frequency Selection on page 604 Display Resolution on page 604 IF Bandwidth on page 605 Output Power on page 605 Averaging on page 606 Single or Continuous Measure on page 607 VVM Calibration on pag...

Page 602: ...ysight N9938 90006 User s Guide VVM Vector Voltmeter Mode Option 308 Procedures 1 Port Cable Trimming Measurements on page 609 2 Port Transmission Measurements on page 611 A B and B A Measurements on page 612 ...

Page 603: ...e the electrical length of a DUT or cable to be trimmed Separate paths are used to measure the Incident signal A and Reflected signal B To measure the ratio of the Reflected Incident signals you were required to select B A for both the Magnitude and Phase display In the FieldFox the source and directional coupler are inside the instrument This allows you to connect the DUT to ONLY the FieldFox POR...

Page 604: ...easurement in 2 Port Transmission Measurements on page 611 B A and A B 2 port ratioed receiver measurements using external sources Learn more in A B and B A Measurements on page 612 Frequency Selection How to set Frequency Press Freq Dist Then Frequency Enter a value using the numeric keypad the arrows or the rotary knob After using the arrows or the rotary knob press Enter The increment setting o...

Page 605: ...00 Hz 3 kHz 30 kHz Output Power Set the power level out of the FieldFox to High Low or manually set power level to a value between High and Low Generally the high power setting is used when measuring passive high loss devices to place the signal farther from the noise floor Increasing the power can also help reduce trace noise However for devices that are sensitive to high power levels such as amp...

Page 606: ... stop frequency Then press Power Level Then enter a value using the numeric keypad the arrows or the rotary knob Press Enter Averaging Averaging helps to reduce the effects of random noise on a measurement The FieldFox computes the displayed value over several consecutive readings Average count determines the number of readings to average The higher the average count the greater the amount of nois...

Page 607: ...s ON Makes continuous measurements This is the typical setting when battery power is not critical You can also use Run Hold to toggle between Single and Continuous VVM Calibration CalReady is accurate for most zeroed VVM measurements at frequencies below about 6 GHz For the very highest accuracy especially above 6 GHz then perform a Mechanical Cal Learn more in How to Perform a Calibration on page...

Page 608: ...ction is made in place of a DUT Learn more in 2 Port Transmission Measurements on page 611 Press Zero OFF before performing a Mechanical Cal sets Zero to OFF How to select Zeroing Press Meas Setup 4 Then Zero Ref Open select to display Phase 0 0 Deg when zeroed Short select to display Phase 180 0 Deg when zeroed Then Zero ON Select Zero OFF to turn zeroing off ...

Page 609: ...optional Measurement Verification procedure a Connect a short standard to PORT 1 where cables to be trimmed will be connected b Press Meas Setup 4 and press Zero c Remove the short standard and connect the open standard d Confirm that magnitude measurement is less than 0 1 dB and that the phase value reads 180 degrees 7 Attach the shortest cable to the FieldFox PORT 1 connector This cable is the r...

Page 610: ...or 11 Observe the displayed phase difference between the reference cable and the untrimmed cable 12 Carefully trim the cable until the phase shift reads zero The attached cable s electrical length is now matched to the reference cable 13 Repeat steps 10 through 12 for the remaining cables to be trimmed The VVM phase reading shows a maximum of 180 Therefore the electrical length of the untrimmed ca...

Page 611: ...er How to make a 2 Port Transmission Measurement 1 Press Mode then VVM then 2 Port Transmission 2 Press Freq Dist and enter the measurement frequency 3 Press Meas Setup 4 then More then Output Power Select High for passive devices Select Low for amplifiers 4 Calibrate the FieldFox using one of the methods described in VVM Calibration on page 607 Before performing a Mechanical Cal press Meas Setup ...

Page 612: ...rocedure 1 Connect the external source s frequency reference output to the FieldFox Freq Ref IN on the top panel If you are unable to use a common frequency reference then increase the IFBW to ensure you are measuring the peak of the correct signal After locating and tuning to the signal you may be able to lower the IFBW to reduce noise 2 On the FieldFox select System 7 then System Configuration t...

Page 613: ...asurements One unit is the source and the other unit is the Receiver In this Chapter Overview on page 614 Requirements and Limitations on page 615 Start Connection Wizard on page 616 Configure Measurement Settings on page 620 Select Measurement on page 620 Normalize on page 621 Source Tracking Offset and Offset Reversal on page 621 Improve Dynamic Range on page 622 Source Enable and Source Mode on...

Page 614: ...unit responds as secondary supplying signal at the DUT input The two units possibly separated by hundreds of meters step together through the selected frequency range making measurements such as long cable characterization With a power splitter at the Source unit the SA Receiver can be used to measure the reference signal to make a true B R ratio measurement Because the reference trace is updated ...

Page 615: ...tion 209 Channel Measurements Tune and Listen Interference Analysis Radio Standards and Sweep Triggering The following SA features are disabled during partnership synchronization Video BW SwpAcquisition Frequency Count Record Playback and certain Amplitude Units The only keystrokes allowed on the Source unit are Send Text Message and Exit When you change network connections it may take up to 2 min...

Page 616: ...tart when ready Press Start At any step press Exit to end the wizard STEP 2 Connect Trigger and LAN cables LAN Connect a LAN cable to each unit The units can either both be connected to the internet on the same network through a switch or router or they can be connected directly to each other a crossover cable may be necessary Trigger signals On each unit connect the Ref Trig Out SMB m connector o...

Page 617: ... IP address of the Source unit If 10 10 10 1 appears then NO FieldFox units were found The LAN setting Obtain IP Address using MUST be set to DCHP Learn more in LAN Settings on page 793 Also be sure that Opt 209 has been installed correctly on the Source unit Press Continue STEP 4 Test Partnership Press Test Partnership If the Source unit is NOT already in ERTA mode it will be started which may ta...

Page 618: ...een the DUT output and the Receiver unit Figure 26 1 Input and Output jumper cables are measured on the Receiver unit If your DUT input AND output is connected directly to the FieldFox or you choose to ignore the loss of BOTH jumper cables then press Skip this step Otherwise press Measure Jumper Cables Do the following for both the Input and Output jumper cables Press Skip this step to skip the ca...

Page 619: ...Start Connection Wizard Press Re measure or Continue Press Apply Corrections Auto to remove the jumper cables from subsequent DUT measurements Default Auto Press Done to exit the Connection Wizard On the Receiver unit press Primary ERTA Partnership The Source unit enters ERTA mode as the secondary ...

Page 620: ...y are all configured as Clear Write Press Meas 1 then choose one or more of the following Figure 26 2 Input power Output power and gain measurement traces To change the trace numbers of these three measurements or to select a trace state other than Clear Write press Trace 6 Softkey Shown on screen Description Input Power R 2 w r R receiver Reference power measured by the Source unit before enterin...

Page 621: ... any of these settings change Normalize is deactivated How to Normalize the B trace Press Meas Setup 4 Then Remote Source Then Normalize ON Source Tracking Offset and Offset Reversal Source offset tracking is used to offset the Source frequency from the Receiver frequency by a fixed offset at every tune frequency This feature is used when the DUT contains a frequency converter How to set Tracking ...

Page 622: ... dB then turn the Preamp ON Learn how in Preamplifier Control Opt 235 on page 160 Decrease the Res BW Learn how in Resolution Bandwidth Res BW on page 185 Set Frequency Reference to GPS on both units This requires Option 307 Built in GPS and two GPS antennae The GPS reference can be enabled for several sweeps Then if you move to a location without an adequate GPS signal Hold over Mode will occur L...

Page 623: ...u to make the following measurements And can be enabled disabled simultaneously with Tune and Listen Overview of Measurement Types If you are familiar with the AM FM measurements and terms skip to How to Set Up AM FM Metrics on page 626 The FieldFox assumes you have manually set up the CF span and amplitude settings Refer to Chapter 9 SA Spectrum Analyzer Mode Option 233 Mixed Analyzers Using AM F...

Page 624: ...oise component in the total unwanted signal It helps the user to troubleshoot the root causes of modulation distortion S Signal Power D N Noise THD D N S D N RF spectrum of the modulated signal This is the most traditional spectrum analyzer measurement viewing the modulated carrier signal power in frequency domain Prior to being modulated the signal power of a sinusoidal carrier concentrates at th...

Page 625: ...n to which the baseband signal modulates the carrier signal The quantity being measured is the peak frequency deviation that is the maximum frequency excursion from the carrier frequency Carrier power This measures the power of the carrier signal without the modulation Ideally power for a sinusoidal carrier signal is concentrated around its carrier frequency Table 27 1 Measurement Details ...

Page 626: ...esolution BW on page 186 Optionally Freq Dist Tune Listen OFF Opens a menu of Tune Listen demod softkeys Tune Listen can be set when you are in Analog Demodulation mode so you can enable Tune Listen sweeps in between your Analog Demod sweeps To learn more about the Tune Listen softkey menu choices refer to Tune Listen AM FM on page 168 Metrics are displayed in the AM FM Modulation Metrics table on...

Page 627: ...Keysight N9938 90006 User s Guide 627 AM FM Metrics SA Only and Option 355 Using AM FM Metrics Figure 27 1 AM Metrics Example 1 ...

Page 628: ...628 Keysight N9938 90006 User s Guide AM FM Metrics SA Only and Option 355 Using AM FM Metrics Figure 27 2 AM Metrics Example 2 ...

Page 629: ...Keysight N9938 90006 User s Guide 629 AM FM Metrics SA Only and Option 355 Using AM FM Metrics Figure 27 3 FM Metrics Wide band Example ...

Page 630: ...yed Refer to Figure 27 4 on page 630 The FFT waveform is used to calculate SINAD and THD distortion metrics The fundamental signal harmonics and noise from 0 Hz to 24 kHz are applied to the formulas Refer to Figure 27 5 on page 631 For more on calculations refer to Overview of Measurement Types on page 623 See also https www keysight com us en assets 7018 04493 application notes 5991 4913 pdf Figu...

Page 631: ...Keysight N9938 90006 User s Guide 631 AM FM Metrics SA Only and Option 355 SINAD and THD Calculations Figure 27 5 SINAD and THD Results Example 1 ...

Page 632: ...632 Keysight N9938 90006 User s Guide AM FM Metrics SA Only and Option 355 SINAD and THD Calculations Figure 27 6 SINAD and THD Results Example 2 ...

Page 633: ...ion discusses possible AM FM Metrics error messages and how to correct them Test Tone Not Found A Test Tone Not Found message is displayed under the following circumstances FieldFox frequency span is too wide No side lobes are displayed in the results Refer to the examples in Test Tone Not Found Example on page 634 and Test Tone Not Found Corrected Example on page 635 ...

Page 634: ...ics Error Messages Test Tone Not Found Example The following response had the following settings Source CF 140 MHz FM Deviation 18 kHz Modulation Rate 1 kHz Reasons for error Frequency span of 1 0 MHz is too wide No side lobes displayed so test tone not found Figure 27 7 Test Tone Not Found Example ...

Page 635: ...requency span of 50 kHz Ideally the frequency span should show the modulation envelope down to 60 dB below the RF power level Response corrected because Narrowing the frequency span enables the modulation envelope s side lobes to be identified FM algorithm identifies the side lobes The algorithm matches the modulation envelope to the mathematically calculated FM modulation or distortion patterns F...

Page 636: ...636 Keysight N9938 90006 User s Guide AM FM Metrics SA Only and Option 355 Interpreting AM FM Metrics Error Messages ...

Page 637: ...Scanner on page 639 Field Strength Measurements on page 656 Using the Antenna Cable Editor on page 662 Using Mapping on page 662 Why and When to Calibrate on page 126 Chapter 16 Indoor and Outdoor Mapping Option 352 Requires Spectrum Analyzer Mode Option 233 and GPS Receiver Option 307 Chapter 31 System Settings Changing display colors Chapter 32 File Management ...

Page 638: ...x Display Types Bar graph vertical display orientation Bar graph horizontal display orientation Channel Power Strip Chart Strip Chart and Overlay Scan Listen Color Coded Display Types Specify high and low power with color bars Flexible Data Sorting Sort results displayed by power or frequency low to high or high to low Data Logging GPS stamped data measurements Define measurement interval by time ...

Page 639: ...ay Type choose Bar ChartV or Bar ChartH or Channel Pow or Strip Chart or Then More and Chart Overlay or Scan Listen 3 Modify scale and specify color bar coding Modify the scale and assign colors to low and high power channels bars Press Scale Amptd Then one of the following Red Limit to set the power level and color scale for high power channels Blue Limit to set the power level and color scale fo...

Page 640: ...e recalled to CurrentDevice RecordPlayback CS Data Log Play files are save recalled to CurrentDevice RecordPlayback CS Or System Sets the User Folder to the user defined system folder path name List files are save to from CurrentDevice UserSelectedFolde r Data Log Play files are save recalled to CurrentDevice UserSelectedFolde r Refer to File Management on page 803 Then File Type KML default or CS...

Page 641: ...ng Stop Immediately stops recording and a Save the Log File menu opens to rename and save your data log file Press Record to begin a new recording Then Maps To enable map view and related features e g Data Selection Red Blue Limits Labels Icons Zoom Data Selection Opens a softkey menu to set the active data channel sort type and sort order Learn more refer to Chapter 16 Mapping and Setting up Data...

Page 642: ... x Integration BW Power is measured over the Integration BW Using Channel Scanner refer to Step 1A Scan Mode Range Channel Defined on page 643 or Step 1B Scan Mode Custom List Channel Defined on page 644 Then Step 2 Select Display Type on page 645 Step 3 Modify Scale and the Display Color Bar Settings on page 649 Step 4 Enable Data Logging and Play Results on page 650 Step 5 Save the Log Results o...

Page 643: ...on 312 How to Set Up Channel Scanner Figure 28 2 Channel Definition Step 1A Scan Mode Range Channel Defined 1 Define some channels Press Measure Scan Mode Range 2 Press Edit Range and modify table items Total Channels Search Count Start Channel CF CF Step Size ...

Page 644: ...hannel Defined 1 Define some channels Press Measure Scan Mode Custom List 2 Press Edit Custom List and modify table items Add table rows Then for each row Edit Center Frequency CF Edit Integration BW IBW Integration BW IBW is coupled to the Frequency Span setting Frequency Span is 50 wider than the IBW e g if the IBW value is 1 MHz then the Frequency Span value is 1 5 MHz ...

Page 645: ... Save Recall List Save List to save a custom list See also How to use the FieldFox labeler on page 807 Step 2 Select Display Type Select one of the following display orientations Select Display Type choose Bar ChartV or Bar ChartH or Channel Pow or Strip Chart or Chart Overlay or Scan Listen Press Recall List to bring back a previously stored custom list ...

Page 646: ...646 Keysight N9938 90006 User s Guide Channel Scanner Option 312 How to Set Up Channel Scanner Figure 28 5 Bar Chart Vertical Display Type Figure 28 6 Bar Chart Horizontal Display Type ...

Page 647: ...Keysight N9938 90006 User s Guide 647 Channel Scanner Option 312 How to Set Up Channel Scanner Figure 28 7 Channel Power Display Type Figure 28 8 Strip Chart Display Type ...

Page 648: ...648 Keysight N9938 90006 User s Guide Channel Scanner Option 312 How to Set Up Channel Scanner Figure 28 9 Strip Chart Overlay Display Type Figure 28 10 Scan Listen Display Type ...

Page 649: ...olors to low and high power values 1 Press Scale Amptd Red Limit to set high power values and to set the color 2 Press Blue Limit to set low power values and to set the color 3 And then press System Display Display Colors to set Indoor Outdoor or other display colors See also Chapter 28 Channel Scanner Option 312 on page 637 Figure 28 11 Outdoor Display Colors ...

Page 650: ...include a GPS stamp Features Log files contain measured channel results including timestamps and or distance stamps Timestamps are included in log files with or without GPS GPS must be enabled for log results to include distance stamps Data results can be logged Data results can be saved to a CSV or KML file Refer to Step 5 Save the Log Results on page 653 User specifies how often results are stor...

Page 651: ...t Default File Type CSV or KLM Auto Save OFF ON default OFF Press to enable disable then Back Learn more see How to Set Up Channel Scanner on page 639 step b 4 To begin outdoor logging recording Press Record If Auto Save is On default OFF Measurements are stored automatically accorded to the specified time or distance interval values Refer to step 5 5 Optional Auto Save OFF default When Auto Save ...

Page 652: ...e Resume to pause or resume the log recording 2 Then choose Optional Use the RPG fine adjust or the arrow keys coarse adjust to change the color bar Cursor Position to change the position along the time record s results i e Cursor Position is active only when playback is paused Maps Red Blue Limits then Red Limit to change the color bar Blue Limit to change the color bar 3 Press Stop or Esc to sto...

Page 653: ... can be imported into 3rd party applications like Google Earth or Google Maps CSV file format Files stored into this format can be imported into spreadsheet applications 1 Press Record Save Recall File Type CSV or KLM Back 2 To begin recording Press Record Measurements are stored automatically according to the specified time or distance interval values 3 When done press Stop The files save dialog ...

Page 654: ...all a previously stored kdat to modify Learn more refer to Chapter 16 Mapping and Option 352 Indoor Maps Setup Procedure on page 485 and Setting up Data Logging on page 497 3 Measurements are displayed on the current indoor map in the specified intervals Use More Data Selection softkey menu to select the Channel displayed the Sort Power Freq and the Sort Order Up Down Then Back Use the Labels Icon...

Page 655: ...rt and Play back KML Files into 3rd Party Software Example Google Earth with Animation Tool Features Use the Playback Slider to replay measurement results See also Google Maps and or Google Earth s help Open the FieldFox KML file in Google Earth Time Slider appears in upper left of the map Manual Mode Move the time slider cursor to see color coded icons pop up according to the timestamp Loop mode ...

Page 656: ...to the FieldFox The Field Strength feature allows you to enter the frequency response of the receiving antenna the Antenna Factor and associated cabling and then have amplitude corrections automatically compensate the displayed trace for that response Figure 28 15 Overview of Field Strength for Channel Scanner See also Figure 28 16 on page 657 FieldFox Field Strength Channel Scanner Refer to Figur...

Page 657: ...Keysight N9938 90006 User s Guide 657 Channel Scanner Option 312 How to Set Up Channel Scanner Figure 28 16 Editing Antenna Factor See also Figure 28 15 on page 656 ...

Page 658: ...ker to measure total power over a range of frequencies Learn how in Band Interval Power Marker on page 214 How to select and edit corrections for Field Strength measurements The Antenna and Cable correction data survives a Mode Preset and Preset All Correction ON OFF states survive a Mode Preset but NOT a Preset Press Scale Amptd Then More Then Corrections Then choose from the following Apply Corr...

Page 659: ...ion ON or OFF for this Antenna Cable Edit Antenna Cable Edit an Antenna Cable Correction table See Using the Antenna Cable Editor below for more information New Create a new Antenna Cable See Using the Antenna Cable Editor below for more information Save Antenna Cable Save the modified Antenna Cable to a file on the specified Storage Device Recall Antenna Cable Read an existing Antenna Cable file ...

Page 660: ...660 Keysight N9938 90006 User s Guide Channel Scanner Option 312 How to Set Up Channel Scanner Figure 28 18 Apply Corrections Set to Auto ...

Page 661: ...Keysight N9938 90006 User s Guide 661 Channel Scanner Option 312 How to Set Up Channel Scanner Figure 28 19 Apply Corrections Set to Disabled ...

Page 662: ...ing capability Refer to Chapter 16 Indoor and Outdoor Mapping Option 352 Requires Spectrum Analyzer Mode Option 233 and GPS Receiver Option 307 Using Resolution Bandwidth Tradeoff Res BW Tradeoff This feature controls the resolution bandwidth for the current measurement To use this feature press BW 2 Res BW Tradeoff then choose from the following High Sensitivity Use this setting for greatest accu...

Page 663: ...ollowing message for ten seconds Ensure your Noise Source is connected to the VVS DC Output It VVS will be driven up to 28V during the measurement When connecting a Smart Source similar to a U1832 U1833A B C D please wait 10 to 20 seconds for the FieldFox analyzer to recognize your device Noise figure requires these options Spectrum analyzer mode Option 233 Combination Analyzers Only Preamplifier ...

Page 664: ...6 Figure 29 1 Example of Jitter Uncertainty 21 points with Uncertainty Bars Learn more in How to use Auto Integration on page 716 Figure 29 2 Example of Jitter Uncertainty 21 points with Uncertainty Bars Disabled Learn more in How to use Auto Integration on page 716 ...

Page 665: ...Points on page 699 Alignments on page 700 Calculating Noise Figure Measurement Uncertainty on page 701 Using ENR Tables on page 706 About ENR enr Preamplifier amp and DUT dut Files on page 707 Using Markers Noise Figure on page 709 Calibration Wizard on page 710 How to use Auto Integration on page 716 Other Features Available on page 722 Troubleshooting on page 723 All about Markers on page 726 Al...

Page 666: ...echnique to accurately verify and characterize the noise figure of devices Option 356 has these features Five Measurement Types Noise Figure Noise Factor Gain Noise Temperature Y Factor Four Measurement Setup Types Noise Source DUT Integration Uncertainty Four Pre configured DUT Measurement Types Amplifier Downconverter Upconverter Multi Stage Converter Uncertainty Contribution Values can be Custo...

Page 667: ... caret shows last point measured 1 Variable Voltage Source VVS Status line appears when the VVS status line is turned on in the system menu Refer to Variable Voltage Source Opt 309 on page 790 2 Uncertainty status annotation displayed when the uncertainty bars are enabled 3 Questionable Amplitude annotation displayed when the Amplitude Alignment is stale 4 External Reference annotation displayed w...

Page 668: ...moved from the left of the traces to the bottom of the traces 1 No Cal No calibration applied 2 Rcvr Cal Only receiver calibration applied 3 User Cal Receiver Cal User Cal applied but User Cal is interpolated the calibration frequency points do not match up with sweep frequency points 4 User Cal Receiver cal User Cal applied and User Cal is not interpolated the calibration frequency points match u...

Page 669: ...ted the value is the current spot ENR Uncertainty Status annotation Only displayed when the Uncertainty bars have been enabled 1 Uncertainty Bars are disabled 2 Unc Uncertainty bars are enabled and uncertainty values are questionable not all uncertainty contributions are turned on or one or more of the contributions was calculated to be 0 00 based on the ENR DUT and Preamp uncertainty values If yo...

Page 670: ...e model will say None if there is no USB Noise Source connected 3 Noise Source Control menu allows user to manage the USB Noise Source 2nd Figure 1 General warning message annotation notifying that NO_USB _DEVICE_FOUND no USB Noise Source is connected 2 When in Smart Auto mode if there is no connected device then ENR model is None 3rd Figure 1 User set Auto load ENR to OFF Information to user that...

Page 671: ...igure 29 9 Smart Noise Source Source Menus ENR Mode Smart Auto only Tcold value gets automatically loaded into FieldFox when the USB Noise Source is connected This value is applied as the Default value for T Cold menu If not in Smart Auto mode the T Cold value gets set to Default 296 5 K ...

Page 672: ...ed into the ENR Table when the USB Noise Source is plugged in If OFF The ENR Data will not be automatically loaded into the ENR Table when the USB Noise Source is plugged in Default ON 3 Reload ENR Data The ENR Data from the USB Noise Source get loaded into the ENR Table 4 Source Output Norm OFF ON Sets the Noise Source drive status Default NORMal the FieldFox controls the Noise Source drive statu...

Page 673: ... Typical Noise Figure Measurement Procedure This section briefly reviews the steps in setting up a noise figure measurement If you are not familiar with this process or would like more information refer to Overview of Softkey Menus on page 674 and How to Use DUT Measurement Setups on page 682 1 Set up a Noise Source ENR Table Meas Setup Noise Source ENR Table Edit Save Recall 2 Set the resolution ...

Page 674: ... Mismatch Uncert OFF ON User Cal Uncert OFF ON applies the current User Cal uncertainty to the current measurement s uncertainty calculations and Then Back Uncert Bars to ON Overview of Softkey Menus This sections describes the Noise Figure s Measure Measure Setup softkeys and related sub menu softkeys 1 Define a measurement type a Select a Measure choose Noise Figure Specify Noise Figure default ...

Page 675: ...row enough such that the ENR value does not change significantly across that range Default Spot Smart Auto The FieldFox checks for a valid USB noise source and automatically loads any ENR and calibration values And automatically loads a T Cold value from the USB Noise Source measured in Kelvin Table You can enter ENR data for the noise source you are using as a table of values The values held in t...

Page 676: ...ve Recall Opens the ENR table menu to edit save or recall noise source values Active when ENR Mode set to Table Then choose Edit ENR Table Opens the currently selected table of noise source values generic default noise source values are populated for quick check Enter your noise source s values for more accurate measurements New ENR Table opens a new ENR table for entering and saving additional no...

Page 677: ...tomatically reconnects the FieldFox to a noise source If one is not found the FieldFox displays Noise Source is NOT CONNECTED Allow 10 to 20 seconds for the instrument to detect the noise source Auto Load ENR OFF ON When Auto Load is enabled the FieldFox automatically searches for a compatible USB noise source and reloads the stored calibration and temperature data When disabled no existing search...

Page 678: ...urce application ENR Table OFF ON Enables disables the ENR Table data for use in the current measurement Default OFF If the ENR Table is set to ON when Auto Load ENR is set to ON and a noise source is connected to the analyzer the ENR table data is overwritten If the Auto Load ENR is set to OFF no data is loaded into the ENR table Refresh T Cold When the noise source is set to Smart Auto and a U18...

Page 679: ... at a given point to attempt to reach the Jitter Goal value i e the measurement time per point is automatically adjusted to the minimum time required but will never exceed the displayed Max Time Pt After this time values in excess of the jitter Goal value trigger the Jitter Warning Jitter Warning Enables Disables the Jitter Warning The Jitter Warning displays when the Jitter value exceeds the Jitt...

Page 680: ...t Rayleigh Fixed default or Uniform in Circle Back to return to previous menu DUT Table Edit Save Recall Only active when DUT Mode Table Then choose Import DUT Data Opens a menu of softkeys where you can select a DUT csv or snp data file to import into your table Then choose Recall File Sort by File Name Sort by Date Next Page Previous Page or Cancel Edit DUT Data Opens a menu of softkeys where yo...

Page 681: ...enu Preamp Sets the DUT Mode to either Spot default or Table Then choose Preamp Mode Set to Spot default or to Table For Preamp MODE Spot choose Preamp Spot Values Only active when DUT Mode Spot Refer to similar DUT Spot Values Only active when DUT Mode Spot on page 680 Back to return to previous menu Preamp Table Edit Save Recall Only active when Preamp Mode Table Refer to similar DUT Table Edit ...

Page 682: ... to previous menu How to Use DUT Measurement Setups Noise figure Option 356 has four predefined measurement setups Amplifier Downconverter Upconverter Multi Stage Converter Refer to Using Measure Setup to Choose DUT Type on page 682 Each of the four measurements has frequency context and loss compensation softkeys that can used to optimize the DUT s noise figure measurement Refer to DUT Type and F...

Page 683: ...o Define a Noise Figure Measurement Setting DUT Type Upconverter see Figure 29 13 on page 686 and for Smart Noise Source see Figure 29 17 on page 690 Setting DUT Type Multi Stage Converter see Figure 29 14 on page 687 and for Smart Noise Source see Figure 29 18 on page 691 ...

Page 684: ...T parameters without an external preamplifier LNA Type Amplifier DUT displays does not display LO if not frequency converting Displays preamp LNA if User Cal is available See next image this figure Used for setting up DUT parameters with an external preamplifier LNA DUT Measurement Setup Type Amplifier DUT Measurement Setup Type Amplifier with External Amplifier LNA and User Calibration ...

Page 685: ...internal frequency downconversion converts RF down to IF Sideband LSB Lower Sideband available for downconverter and upconverter USB Upper Sideband available for downconverter and upconverter DSB Double Sideband available for downconverter averages LSB and USB ENR values DUT Measurement Setup Type Downconverter Used for setting up DUT parameters with an external preamp DUT Measurement Setup Type D...

Page 686: ...requency upconversion technically converts IF up to RF but for this case RF always DUT In and IF always DUT Out and so converts RF up to IF Sideband LSB Lower Sideband available for downconverter and upconverter USB Upper Sideband available for downconverter and upconverter Used for setting up DUT parameters with an external preamp DUT Measurement Setup Type Upconverter DUT Measurement Setup Type ...

Page 687: ...rter Screen Used for setting up DUT parameters Type Multi Stage Converter Multi Stage Converter Performs multi stage frequency conversion converts RF down up to IF DUT Measurement Setup Type Multi Stage Converter Used for setting up DUT parameters with preamp and User Cal DUT Measurement Setup Type Multi Stage Converter with External Preamp LNA and User Calibration ...

Page 688: ...ource is connected to the FieldFox Plug in USB Noise Source BEFORE entering this menu Expect a 10 20s of delay for the FieldFox to recognize the USB Noise Source Setup Diagram FieldFox USB Port USB Noise Source Displays preamp LNA if User Cal is available See next image this figure DUT shows LO if frequency converting DUT Measurement Setup Type Amplifier with External Amplifier LNA ENR Mode Smart ...

Page 689: ...mart Auto USB Smart Mode DUT Wizard visibility Setup shows that Preamp is visible because a User Cal is applied DUT shows LO if frequency converting DUT Measurement Setup Type Downconverter with External Amplifier LNA ENR Mode Smart Auto USB Smart Mode DUT Wizard visibility Setup shows that Preamp is not visible because no User Cal is applied DUT shows LO if frequency converting ...

Page 690: ...visibility 1 Frequency warning Tells you the setup is illogical and how to fix it Does not stop measurement 2 Frequency error Tells you that the frequency values are out of range RF 0 or IF FF Minimum Start Freq or IF FF Maximum Stop Freq Stops measurement until you fix it Frequency warnings errors also show up on main screen DUT Measurement Setup Type Upconverter with External Amplifier LNA ENR M...

Page 691: ...art Auto USB Smart Mode DUT Wizard visibility Setup shows that Preamp is visible because no User Cal is applied DUT shows LO if frequency converting DUT Measurement Setup Type Multi Stage Conv with External Amplifier LNA ENR Mode Smart Auto USB Smart Mode DUT Wizard visibility Setup shows that Preamp is not visible because no User Cal is applied DUT shows LO if frequency converting ...

Page 692: ...gure measurements RF DUT In Start Stop Center Span Freq Context Inactive for Amplifier RF IF LO Inactive for Amplifier IF DUT Out Inactive for Amplifier Start Stop Center Span This section contains the following Setting Meas Setup DUT Next RF OUT in see Figure 29 19 on page 693 Setting Meas Setup DUT Next IF DUT Out see Figure 29 20 on page 694 Setting Meas Setup DUT Freq Context IF see Figure 29 ...

Page 693: ...efer to Frequency Range and Frequency Context on page 696 Figure 29 19 DUT Type Amplifier and Multi Stage Converter RF DUT In Frequency Context Used for setting up Start Stop Center and Span frequency context for a DUT Type Amplifier and Multi Stage Converter Set the frequency context based on the DUT Type Enter the RF DUT In values for Start Stop Center and Span frequencies DUT Measurement Setup ...

Page 694: ...and Frequency Context on page 696 Figure 29 20 DUT Type Downconverter Upconverter and Multi Stage Converter IF DUT Out Frequency Context Inactive for Type Amplifier Used for setting up Start Stop Center and Span frequency context for a DUT Type Downconverter Upconverter and Multi Stage Converter Set the frequency context based on the DUT Type Enter the RF DUT In values for Start Stop Center and Sp...

Page 695: ...s Refer to Frequency Range and Frequency Context on page 696 Figure 29 21 DUT Type Downconverter Upconverter and Multi Stage Converter Freq Context IF or RF Inactive for Type Amplifier Used for setting up frequency context for a DUT Type Downconverter Upconverter and Multi Stage Converter Set the frequency context based on the DUT Type Enter the frequency context IF default or RF DUT Measurement S...

Page 696: ...UT In and IF DUT Out Then Freq Dist and choose from the following Start and Stop frequencies beginning and end of the sweep Center and Span frequencies the center frequency and span of frequencies half on either side of center Freq Annotation and one of the following Follow each setting by entering a value using the numeric keypad arrows or the rotary knob After using the keypad select a multiplie...

Page 697: ...led or disabled for loss and for temperature Loss compensation can be used to compensate for double sidebands DSB Loss compensation can be used in the case of DSB measurements to compensate for the doubling of the measured noise level i e 3 01 dB increase For all sideband cases you can enable or disable Loss device loss and Temperature device temperature Refer to Figure 29 23 on page 698 This sect...

Page 698: ...T Loss Compensation Used for setting up loss compensation for a DUT Type Amplifier Downconverter Upconverter and Multi Stage Converter Loss compensation can be set before and after the DUT Enable or disable the Loss device loss and the temperature device temperature DUT Measurement Setup Type Amplifier Downconverter Upconverter and Multi Stage Converter ...

Page 699: ...aking measurements Each Run Hold press causes NF to toggle between continuous sweep and Hold OFF Causes NF to Hold Each Run Hold or Single press causes NF to make ONE sweep then Hold The Hold annotation changes to an arrow while the sweep occurs Single Automatically sets Continuous OFF and causes NF to make ONE sweep then Hold Restart Resets the sweep to the current defined start frequency point P...

Page 700: ... noise measurement and faster measurement time How to set Res BW Press BW 2 Then Res BW Then choose from the following 300 kHz 1 MHz 3 MHz 5 MHz Press the desired resolution bandwidth The current Res BW setting is shown at the bottom of the screen This setting could impact the accuracy of the measurement See Specifications in https www keysight com us en assets 7018 03314 data sheets 5990 97 83 pd...

Page 701: ...e to the internal reference switch Other possible causes of uncertainty that are not included in the uncertainty analysis are temperature drift of the following DUT Noise source or Preamplifier Refer to ENR Using ENR Tables on page 706 Reverse noise wave generation by the DUT or preamplifier All amplifiers including the DUT and preamplifiers used in the noise figure measurement are active devices ...

Page 702: ...c behavior etcetera Any instability in the DUT will cause unaccounted noise measurement uncertainties Entering Uncertainty Information In addition to information gathered during the measurement the following information must be provided by the user in order to determine the noise measurement uncertainty DUT Reflection Coefficient For this section see also Overview of Softkey Menus on page 674 Unce...

Page 703: ...e largest possible reflection coefficient for the population of devices to which the DUT belongs This is true for does not exceed specifications Fixed Use this if the value is a measured value for the DUT Median Mean Use this if this value represents the median mean reflection coefficient for the population of devices to which the DUT belongs 95th ile Use this if 95 of the population has a lower r...

Page 704: ...ch means that 95 of the time the actual ENR is within the range of ENR ENR Uncertainty Preamplifier Reflection Coefficients User Calibration Only For this section see also Overview of Softkey Menus on page 674 Uncertainty Preamp on page 681 When a user calibration is performed the Preamplifier Reflection Coefficient values may be imported to a Preamp table from snp or csv files entered by editing ...

Page 705: ...tainty Calculation and Display For this section see also Overview of Softkey Menus on page 674 Uncertainty Uncert Contributions on page 681 When enabled uncertainty bars are displayed on the data trace indicating the uncertainty range for the current Noise Figure Noise Factor or Noise Temperature measurement By default the displayed uncertainty range is the measured data the default coverage facto...

Page 706: ...ement If this is done it is important to select the ENR table for the calibration noise source prior to the calibration And then to select the ENR table for the measurement noise source prior to measuring the DUT See also Calibration Wizard on page 710 How to Create an ENR Table To create an ENR table This procedure assumes you have previously set your frequency resolution bandwidth and number of ...

Page 707: ... it is created automatically before storing the file ENR files are stored as enr files Existing ENR files that are loaded into the FieldFox can be overwritten Your edited file will NOT be overwritten when firmware is updated To DELETE a enr file use the Manage Files feature Learn more in Manage Files on page 813 Uses existing ENR file format Refer to https www keysight com us en a ssets 9018 01420...

Page 708: ...be overwritten Your edited file will NOT be overwritten when firmware is updated To DELETE a amp file use the Manage Files feature Learn more in Manage Files on page 813 DUT dut Files DUT dut files are saved to and recalled from the NoiseFigure DUT folder If the folder does not already exist on a USB or SD card it is created automatically before storing the file DUT files are stored as dut files E...

Page 709: ...r Table Annotation Marker annotation Marker readout in top right corner of graticule Displays uncertainty values for select measurements IMPORTANT Noise Figure has asymmetric uncertainty see red box in figure Noise Factor and Noise Temperature have symmetric uncertainty Marker table annotation under the graticule Marker table data under the graticule Displays uncertainty values for select measurem...

Page 710: ...d User Calibrations This section contains the following Receiver Calibration Receiver Cal User Calibration User Cal User Calibration User Cal Optimizing Measurement Accuracy Receiver Calibration Receiver Cal The receiver calibration s purpose is to establish the true measurement bandwidth of the receiver when making noise measurements This bandwidth information is used to calculate the gain of the...

Page 711: ...f the receiver The receiver calibration is needed because it is influenced by the IF analog circuitry of the FieldFox Additionally the bandwidth is extremely stable and does not vary significantly with time or temperature So once the receiver calibration has been successfully performed there is no need to repeat the receiver calibration Exceptions Re do the receiver calibration when the FieldFox r...

Page 712: ...Cal 2 The Receiver Cal measures the gain bandwidth product GBW of the FF receiver 3 Should be run before making any measurements 4 Only needs to be carried out about once every year it does not need to be carried out for different measurement parameters different noise sources when temperature drifts etc 5 If USB Noise Source is NOT connected to the FieldFox Measure will be grayed out DUT Measurem...

Page 713: ...at it can be removed from the measurement when computing the noise figure of the DUT Also the user calibration establishes the power gain of the receiver preamplifier system so that the reported gain of the DUT will be the gain between input of the DUT where the noise source is connected during the measurement and the calibration plane which is the point where the noise source is connected during ...

Page 714: ...e noise contribution of the external preamp 3 Should only run if using an external preamp 4 Must have a Receiver Cal to run a User Cal 5 Needs to be carried out for current preamp current frequency range and current temperature within reason 6 The current User Cal is automatically invalidated if you go outside of its frequency range 7 If USB Noise Source is NOT connected to the FieldFox Measure wi...

Page 715: ...t necessary to use the same noise source in the user calibration as will be used in the measurement In some cases it might be better to use a different noise source in the user calibration than will be used in the measurement If this is done it is important to set the ENR table for the calibration noise source prior to the calibration and to set the measurement noise source prior to measuring the ...

Page 716: ...h the selected amount of measurement jitter in the shortest possible time The auto integration feature calculates the time required to satisfy the jitter goal from the relative power levels as they are measured One significant advantage of auto integration is that it ensures that the best possible instrument speed is used in achieving the necessary jitter requirement If on the other hand it is det...

Page 717: ...o consider the contribution of the jitter uncertainty to the total measurement uncertainty when selecting a jitter goal If the measurement uncertainty from other contributors is known to be 0 5 dB for example it would make little sense to set a jitter goal of 0 1 dB Setting a jitter goal of 0 3 dB in this case would only increase the RSS uncertainty to 0 58 dB and would potentially speed up the me...

Page 718: ... 32 File Management and then to Saving and Recalling Files on page 804 Choose Save ENR Table Enter the filename of your noise source Enter a value using the numeric keypad the arrows or the rotary knob Done to finish table and return to previous menu 4 Enter the noise figure measurement s frequency number of points and span settings Freq Dist Center 50 GHz Sweep 3 More 401 points BW 2 Span 0 Hz 5 ...

Page 719: ...Keysight N9938 90006 User s Guide 719 Noise Figure Mode Option 356 How to use Auto Integration Figure 29 29 Example of Jitter Uncertainty 401 points with Uncertainty Bars ...

Page 720: ...720 Keysight N9938 90006 User s Guide Noise Figure Mode Option 356 How to use Auto Integration Figure 29 30 Example of Jitter Uncertainty 401 points without the Uncertainty Bars ...

Page 721: ... Figure 29 31 shows an example of a noise figure visual Jitter Warning elements that can be enabled disabled i e blue circles around points where the jitter goal was exceeded Press to toggle Jitter Warning OFF ON default ON Figure 29 31 Example of Jitter Uncertainty with Jitter Uncertainty Trace ...

Page 722: ...imit Lines For information on using Limit Lines refer to All about Limit Lines on page 741 Display Lines For information on using Limit Lines refer to the SA chapter s section Display Line on page 212 Scale Settings For information on using Autoscale Autoscale All and Scale settings All about Scale Settings on page 752 ...

Page 723: ...bleshooting Some measurements can result in invalid results NaNs In these cases the FieldFox s Noise Figure Option 356 displays the following Red X on the NaN point Marker readout displays SCPI will return its NaN representation i e 9 91E 37 Figure 29 32 Example of an invalid measurement ...

Page 724: ...724 Keysight N9938 90006 User s Guide Noise Figure Mode Option 356 Troubleshooting ...

Page 725: ...age 730 Marker Trace IQA and SA Mode on page 730 Marker Format on page 731 Searching with Markers on page 732 What Is a Peak on page 737 Marker Functions on page 739 SA Marker Functions on page 740 How to Create Fixed Limit Lines on page 741 Relative Limit Lines on page 742 Build From Trace on page 742 Limit Options on page 743 How to Save and Recall Limits on page 744 Creating and Importing csv L...

Page 726: ... Analyzer NA NF RTSA SA Phased Array Antenna and Pulse Measurements Modes How to create Markers 1 Press Marker 2 Then Markers 1 6 to select a marker to activate 3 Then Normal to activate that marker A marker is created on the trace in the middle of the X axis That marker is now active 4 Then move the marker using the rotary knob the arrows or by entering an X axis position with the number keys 5 T...

Page 727: ...n that is relative to a reference marker A Delta marker is created with a Δ delta symbol to distinguish it from the reference marker All six markers can be a Delta marker pair Peak search functions can be performed using delta markers Figure 30 2 A Delta marker and its associated reference marker In the graphic above the marker readout shows the difference between the two markers in frequency and ...

Page 728: ...race Create a Delta marker From the Mkr Tools menu press More SA mode only then Marker Properties then Delta Ref Fixed OFF The reference marker floats at the data trace Y axis position ON The reference marker is fixed at the Y axis position of the data trace when the marker was created default IQA and SA modes Signal Track Marker NF and SA Mode ONLY In NF and SA mode the marker can be peaked at th...

Page 729: ... axis position Coupled markers are allowed only in NA mode and are relevant only in multi trace configurations You can have markers that are coupled and others that are uncoupled Peak functions move the marker to the peak on the active trace while all other markers move to the same X axis position Figure 30 3 Coupled Markers move on ALL traces at the same time NA shown I Q Analyzer IQA mode has co...

Page 730: ...n only the active trace How to move a CAT NA and NF mode marker between traces 1 With at least one marker present press Marker then More 2 Then select the marker to move using Marker 1 2 3 4 5 6 3 Then toggle Marker Trace Auto Data Mem Auto Marker resides on data trace when it is visible Marker resides on memory trace when only IT is visible Default setting Data Marker resides on data trace even w...

Page 731: ...sition of the last data or to the ZERO position Marker Format The Marker Format setting allows you to choose the format of the marker readout that appears in the upper right corner of the screen and in the marker table The marker format can be independent of the trace format and can be set independently for each trace All markers on a trace have the same marker format How to choose marker format P...

Page 732: ... marker number OFF causes a new marker search only when the search feature is re executed Peak Moves the active marker to the HIGHEST amplitude data point of the trace Peak Excursion and Peak Threshold value is ignored In SA Mode the LO feed through signal 0 Hz is also ignored Next Peak Moves the active marker to the next highest amplitude data point of the trace Peak Excursion value is ignored Mk...

Page 733: ...dwidth NA Mode ONLY Specify the level in dB from the peak or valley where bandwidth is measured Negative numbers search for a Peak bandpass such as a filter S21 response Either of the following TWO methods can be used to search for a Valley or Notch filter such as the S11 response of a bandpass filter Negative values search down from the TOP MAX of the response Positive values search up from the B...

Page 734: ...requency Mathematical midpoint between marker 2 and marker 3 Q Center Frequency Bandwidth Loss Marker 1 amplitude Left Frequency of marker 2 or 3 to left of marker 1 Right Frequency of marker 2 or 3 to right of marker 1 Press Back to return to the previous menu Press Peak Search then choose from the following Peak Moves the active marker to the HIGHEST amplitude data point of the trace Peak Excurs...

Page 735: ...d marker Peak Left IQA Spectrum Only Moves the active marker to the next data point to the left that meets the Peak criteria When no data points to the left meet the Peak criteria the marker does not move Peak Right IQA Spectrum Only Moves the active marker to the next data point to the right that meets the Peak criteria When no data points to the right meet the Peak criteria the marker does not m...

Page 736: ...the marker positions are correct Refer to Figure 30 6 on page 737 Then press Mkr Tools Then More For DTF TDR measurements and NA Mode skip this step and proceed to the next step Then Mkr5 Mkr6 Search For Mkr1 Mkr2 maximum or minimum value search Then Mkr5 Peak or Mkr5 Min Or for Mkr3 Mkr4 maximum or minimum value search Then Mkr6 Peak or Mkr6 Min If your Markers are positioned and in Normal marker...

Page 737: ...er Only Cont Peak Search These two peak criteria settings are set individually for each trace and for each mode CAT SA or NA These settings do NOT survive a FieldFox or Mode Preset How to set Peak Criteria Press Mkr Tools In CAT and NA modes Then Peak Search Then Peak Criteria The Peak Threshold and Excursion settings are NOT available in DTF measurements To make these settings create a non DTF CA...

Page 738: ...des To be considered a peak data values must fall off from the peak on both sides by the excursion value Default 0 5 dB for CAT and NA Modes 6 dB for SA Mode Cont Peak Search I Q Analyzer Only Enables or disables the Continuous Peak Search marker When Continuous Peak Search is on a peak search is automatically performed for the selected marker after each sweep The rules for finding the peak are ex...

Page 739: ...not required for all modes 4 Then choose one of the following Mkr Center Not available in DTF I Q Analyzer waveform or SA mode with zero span The center frequency of the measurement becomes the value of the active marker The frequency span is adjusted accordingly Mkr Delay NA mode ONLY The group delay value of the active marker becomes the electrical delay setting of the trace Learn how to set gro...

Page 740: ... following Marker Functions are available in I Q Analyzer Mode ONLY exceptions are noted Noise Marker Available in SA mode Band Interval Power Marker Available in SA mode Coupled Markers Band Span Interval Band Span Continuous Peak Search Learn more about Noise and Band Interval Power marker functions starting in the IQA chapter here Noise Marker on page 309 SA Marker Functions The following Marke...

Page 741: ...ved and recalled independently from the Limit softkeys Learn more inChapter 32 File Management How to Create Fixed Limit Lines There are two ways to build a Fixed limit line 1 Build limits From a Trace Learn how in Build From Trace on page 742 2 Enter X Y data points into the on screen editor The limit line is formed as the FieldFox connects the dots on the screen To create frequency gaps that are...

Page 742: ...erenced to the center frequency X axis and acquisition Y axis Use relative limits to test devices or signals that are identical except for the center frequency or amplitude With relative limit lines in place you change the center frequency of the measurement and the limits look as though they are in the same location The same is true for acquisition When you expect to measure a different power lev...

Page 743: ...ow to Build Limit Lines from a Trace 1 Select the trace from which limits will be built 2 Press Limit 8 Edit Build From Trace A limit line table appears 3 Use the arrows to select ON 4 Use Offset to shift the limit line UP or DOWN Learn how below Limit Options How to set Limit Options 1 Press Exit if the limit table is visible 2 Then Options 3 Then choose from the following Beep On Pass Audible be...

Page 744: ...limit line DOWN How to Save and Recall Limits 1 Press Save Recall 9 then Device to set the Device Internal SD card or USB flash drive to be used for the Save or Recall Learn more in Set File Type and Select Device on page 810 2 Press Limit 8 3 Then choose from the following Save Limits After limit lines have been defined this saves the line definition to a file on the specified device e g xml Reca...

Page 745: ...led Possible file content error For an example trace with limit lines refer to Figure 30 9 on page 748 Table 30 1 Example Limit Line Formatting csv Sheet 1 of 2 Description of Limit Line Notes Comments start with Any cells that begin with are ignored by the FieldFox Description LimitExample Example LimitExample name only Use any descriptive name Enabled TRUE Choose TRUE or FALSE Fixed Relative Fix...

Page 746: ...nored by the FieldFox Enabled TRUE Fixed Relative Fixed Lower Upper Upper LimitLines Frequency Amplitude 5000000000 50 10000000000 50 20000000000 50 30000000000 50 Comment 4 Example Any cells that begin with are ignored by the FieldFox Table 30 1 Example Limit Line Formatting csv Continued Sheet 2 of 2 Description of Limit Line Notes ...

Page 747: ...Data Analysis Features All about Limit Lines Keysight N9938 90006 User s Guide 747 Figure 30 8 Example Table Limit Line Formatting in actually LimitExample csv ...

Page 748: ...Data Analysis Features All about Limit Lines 748 Keysight N9938 90006 User s Guide Figure 30 9 Example Recalled Limit Line Formatting LimitExample csv ...

Page 749: ...back A display line is similar to a Limit Line except that no PASS FAIL testing occurs A display line is easier to create than a Limit Line Learn more in All about Limit Lines on page 741 Figure 30 10 Display Line with Annotations SA mode shown but others are similar How to create and move a Display Line 1 Press Limit 8 Display Line OFF ON 2 Then enter a Y axis value using the arrows or the rotary...

Page 750: ...ace into memory A beep sounds to confirm the data trace has been saved to memory There is no display annotation that indicates that the memory trace has been stored 3 Then choose from Press Data to view only the data trace Press Memory to view only the memory trace Press Data Memory to view both the live trace and the stored memory trace How to perform Trace Math Trace math is performed between a ...

Page 751: ...ach operation Use Data Memory for normalization purposes such as when comparing traces before and after a change is made or when measuring trace noise In the following table the Data Mem values intuitively show the differences between traces It is not obvious what Data Mem is displaying Use Data Memory to show the relative differences between two signals Use for comparison of very small signals su...

Page 752: ...ually enter a scale per division to view specific areas of the trace Ref Level Manually set the value of the reference line Enter a negative value by pressing Run Hold either before or after typing a value Ref Pos Manually set the position of the reference line Values must be between 0 TOP line and 10 BOTTOM line Range Manually set the absolute power dBm Set Top and Bottom graticule values The sca...

Page 753: ...ecting calibration accuracy How to Enable Disable Averaging 1 Press BW 2 2 Then choose from Channel Scanner Average OFF ON change to ON to enable averaging Default OFF Power Meter Pulse Measurements Average Auto Man OFF change to Auto or Man to enable averaging Default Auto Auto FieldFox sets the average count based on current mode settings CAT NA Average 1 change to a number 1 to enable set avera...

Page 754: ...e current count using the Num Averages softkey CAT NA Average 1 change to a number 1 to enable set averaging Default 1 OFF 3 Enter a value using the numeric keypad Enter 1 for NO averaging 4 Press Enter 5 While Trace Averaging is in process press Sweep 3 then Restart to restart the averaging at 1 ...

Page 755: ...0 Edit Keywords on page 761 Full Screen Mode on page 761 Utilities on page 762 How to view and change Utilities Settings on page 762 Utilities Softkey Choices on page 762 How to view and change the Frequency Extender Freq Extnd Settings on page 763 Preferences on page 770 Quick Settings Table on page 770 Save and Reset Preferences on page 772 Global Settings Overview on page 772 Language on page 7...

Page 756: ...e Format and Time Zone Settings on page 792 LAN Settings on page 793 Power ON on page 795 FieldFox Package Installer on page 796 Date and Time Format and Time Zone Settings on page 792 Service Diagnostics on page 797 Understanding the Fan Controls on page 800 See Also Install the Lithium Ion Battery on page 30 FieldFox High Temperature Protection on page 32 Run Hold The Run Hold key determines whe...

Page 757: ...re instrument or just the current Mode CAT SA and so forth When Preset the FieldFox CalReady calibration is recalled for use in CAT and NA Modes Learn more in CalReady on page 127 In addition to all Preference settings the following settings always survive Preset and Mode Preset External Reference state see Frequency Reference Source on page 789 SA Scale and Units see Scale and Units on page 157 S...

Page 758: ... file is recalled ALL modes assume the settings that were in place when the User Preset was saved The active mode is the mode that was visible when the file was saved Mode Preset User The settings for only the current mode are recalled from UserPreset sta Only the instrument settings are saved to UserPreset sta No trace data or calibration data is saved User Preset ON OFF is saved as a Preference ...

Page 759: ...ary knob or numeric keypad to enter a value between 0 lowest volume and 100 highest volume Press Volume again and select Mute to quickly turn OFF the speaker volume Press Volume again to set volume ON to the previous volume control Display Settings You can adjust the FieldFox for optimum viewing in a wide range of lighting conditions Display settings are persistent after a FieldFox shut down Save ...

Page 760: ...etter viewing or enhance the look of screen images This setting can be saved with Preferences How to set Trace Width 1 Press System 7 Display More Trace Width 2 Then choose one of the following Normal Standard width Wide Enhanced width Title A custom title can be made to appear in the upper left corner of the FieldFox screen The title can contain up to approximately 65 alpha numeric characters To ...

Page 761: ...page 807 3 Then Title ON OFF to make the title appear and disappear from the screen Edit Keywords During a file save operation keywords can be quickly appended to other text to create unique filenames The Edit Keywords feature allows you to create custom keywords Learn all about Edit Keywords in Edit Keywords on page 815 Full Screen Mode Full Screen Mode maximizes the display of trace The screen a...

Page 762: ...id Prototype Phased Array Antenna Option 360 EMF Antennas opens a menu of softkeys that enables the triaxial antenna feature for use in EMF measurements Refer to Chapter 15 USB Antennas Full Capability Requires EMF Option 358 and either SA mode Option 233 Mixed Analyzers or OTA 5G NR 5G NR EVM Conducted Option 378 Freq Extnd opens a menu of softkeys that enables frequency extender feature for use ...

Page 763: ...R EVM Conducted Option 378 IMPORTANT When using a frequency extender with the FieldFox you need to manually set the LO power When using the mixer the LO power should be reduced to 12 dBm and Reduce frequency span to make measurements until the unleveled power message goes away requires A 12 40 firmware If you upgrade your FieldFox firmware to A 12 40 but find you are unable to adjust the LO power ...

Page 764: ... of the SA Receiver still remain active using an internal path for the source Port 2 is where the head delivers the downconverted signal to the SA receiver High Sensitivity ON OFF selection able to choose between showing largest span wide available 6 GHz or best noise floor narrow Frequency Extender Procedure General Comment on Frequency Converter Usage OML heads are limited to 6 GHz span Example ...

Page 765: ...s state stops all auto loading of the default corrections Refer to step 8 The other non SA supported modes do not allow viewing or editing of the corrections but they all share the same corrections Therefore any manual changes to the corrections using SA via Edit SA are then used by other supported modes RTSA IQA OTA as well 7 Optional Press Apply Corr ON OFF OFF is selected to not apply the defau...

Page 766: ...s or rotary knob to change the value Refer to Figure 31 4 on page 769 d Save Converter opens a labeler menu where you can name and save your frequency converter corrections file csv to the default INTERNAL Converter folder e Recall Converter opens a menu where you can recall a frequency converter corrections file csv Storage Device opens a menu where you can change the storage location of your fre...

Page 767: ...Keysight N9938 90006 User s Guide 767 System Settings Utilities Figure 31 1 FieldFox with OML Downconverter ...

Page 768: ...938 90006 User s Guide System Settings Utilities Figure 31 2 FieldFox Frequency Converter High Sensitivity ON Narrow Lowest Noise Floor Displayed Figure 31 3 FieldFox Frequency Extender Select Frequency Extender Head ...

Page 769: ...Guide 769 System Settings Utilities Figure 31 4 FieldFox Frequency Converter Corrections Table Figure 31 5 FieldFox Frequency Converter Freq Extend On And Corrections eCorr Enabled SA mode shown other compatible modes are similar ...

Page 770: ... can be restored to their factory defaults Learn how in Save and Reset Preferences on page 772 There are two ways to make FieldFox preference settings From softkey selections throughout the FieldFox menu structure Do this to temporarily try a setting then press Save Current Preferences Learn how in the next section From the Quick Settings table Also refer to Audio Volume Control on page 759 and Di...

Page 771: ...re immediately saved as Preferences 5 To exit the editing session without saving changes press Esc at any time Learn more about these preference settings Settings Save and Reset Preferences on page 772 Part of Preferences Softkey Menu Global Settings Overview on page 772 Language on page 772 Similar features as Language in the Preferences softkey menu See also How to select a Language on page 773 ...

Page 772: ...s you would like them to remain 2 Press System 7 Preferences 3 Then Save Current Settings There is a beep when your settings have been saved 4 Press Reset Preferences to restore the factory default settings Language Choose the language in which to display FieldFox softkeys and other messages Select Save Current Settings to set this language as a preference Press System 7 Preferences Language See a...

Page 773: ... choose from the following English Espanol Spanish Deutsch German Italiano Italian Francais French Russian Japanese Chinese Turkish Battery Saver When the battery saver is OFF the RF source power is left ON at the end of the sweep which consumes more battery power This feature is used in CAT NA VVM modes and SA mode when the internal source is turned ON Battery Saver is the ONLY FieldFox setting t...

Page 774: ...n Hold With Battery Saver OFF the use of a full battery charge is reduced by approximately 45 minutes Startup Mode The Startup Mode setting determines the mode that becomes active visible when User Preset is set to OFF Factory Preset and the FieldFox is powered ON See User Preset on page 758 How to setup Startup Mode 1 Press System 7 Preferences Preferences 2 Then scroll to Global Settings Startup...

Page 775: ...tle User Title default 8 Then Done Edit for each change in setting Audio Choose the Audio values Mute Volume See also Audio Volume Control on page 759 How to select Audio values 1 Press System 7 Preferences Preferences 2 Then use arrow softkeys or the knob to select Audio 3 Then Edit for each of the following Mute On Off default 4 Volume 0 to 100 default is 50 Setting trace width to Wide will resu...

Page 776: ...elect Date and Time 3 Then Edit for each of the following Date and Time Edit as needed Refer to Date and Time Format and Time Zone Settings on page 792 Time Format Date Format Time Zone 4 Then Done Edit for each change in setting GPS Distance Settings Choose the GPS values GPS State Elevation Unit GPS Sync Clock Display Lat Lon Format See also GNSS GPS and GPS on page 784 How to select CAT distanc...

Page 777: ...so GNSS GPS and GPS on page 784 How to set the frequency reference settings This procedure saves your frequency reference settings using the Quick Settings Table in Preferences Learn more in Quick Settings Table on page 770 1 Press System 7 Preferences Preferences then 2 Press Next Page until Frequency Reference is displayed 3 Use arrow keys or knob to scroll down to until Frequency Ref Source is ...

Page 778: ... power up Toggle User Folder Persist On Off when a new Device location is selected location User Folder displays the default folder location User Device displays the default device location See also Alpha Numeric Editing and File Saving Naming Options Alpha Numeric Editing Keyboard Style Toggles through Qwerty ABC style keyboards that the Labeler displays Refer to How to use the FieldFox labeler o...

Page 779: ... Chooses the name of the Quick Save data file s prefix Press the Edit softkey to edit the prefix name in the Quick Save Prefix menu default FFoxData Refer to Prefixes and Suffixes for Filenames on page 816 Quick Save Suffix Chooses the name of the Quick Save data file s suffix Press the Edit softkey to edit the suffix type Number or Data default Number Refer to Prefixes and Suffixes for Filenames ...

Page 780: ...ables disables csv data files as a part of the group files to be saved when the Quick Save Save Recall 9 hardkey is pressed for 3 seconds S1P Data s1p Enables disables s1p data files as a part of the group files to be saved when the Quick Save Save Recall 9 hardkey is pressed for 3 seconds S2P Data s2p Enables disables s2p data files as a part of the group files to be saved when the Quick Save Sav...

Page 781: ...references Preferences 2 Then use arrow softkeys or the knob to select CAT NA 3 Then Edit for each of the following SnP File Save Default Advanced Default Factory Error Corr N995xB 6xB Only Enhanced Response Full 2 Port Extended Cal Default N995xB 6xB Only On Off default on models 6 GHz 4 Then Done Edit after each change in setting SA Choose the SA setting for Individual measurement Control defaul...

Page 782: ... screen Big Font Beep this option makes the ADC Over Range warning have a larger text which is accompanied by a Beeping sound to alert you of the ADC Over Range Beep this option keeps the default text size but alerts you of an ADC Over Range with a Beeping sound Big Font this option makes the ADC Over Range warning have a larger text no sound with this option 4 Then Done Edit after changing settin...

Page 783: ...blue High Power Red Blue choose red or blue to choose the color to indicate the highest power levels default Red System Configuration Options Licensing You can view and install options on your FieldFox To see a comprehensive list of the options that are available view the FieldFox Configuration Guide at https www keysight com us en assets 7018 06515 configuration guides 5992 3701 pdf How to view t...

Page 784: ...stem allows you to stamp each data trace with your physical position in latitude longitude elevation format This can be useful when making measurements on cell towers or other antennas at remote locations With Option 307 GPS is available with the built in receiver accessed through the top panel SMA f connector This connector has a settable 3 3 VDC or 5 VDC bias voltage which is switched ON when GP...

Page 785: ...x main window 4 GPS then choose from OFF Disable GPS default setting External Enable GPS using an external customer supplied USB dongle device A check is made to detect a USB GPS device at the USB connectors Internal Enable GPS using Option 307 Built in GPS Connect a GPS antenna to the top panel GPS connector Learn more about additional GPS antenna accessories at http www keysight com find fieldfo...

Page 786: ... enabled the following is displayed at the top of the FieldFox screen The following icons located in RED circle above indicate the GPS lock status GPS ON and locked on satellites GPS ON but NOT locked on satellites GPS ON but no GPS receiver is present or detected The following annotation BLUE circle in above image indicates the INTERNAL top panel antenna status Ant INIT antenna status initializin...

Page 787: ...on options GNSS Settings 3 Then choose from the following Enable and disable the synchronization of the FieldFox internal clock to the GPS UTC time standard ON The FieldFox clock is synchronized and updated approximately once every hour to the time of the GPS clock OFF The FieldFox clock is NOT synchronized with GPS When set to OFF after Sync was ON the date and time does NOT revert back to the se...

Page 788: ... is a sample S1P file with GPS information GPS Latitude 38 28 87717 N GPS Longitude 122 42 66625 W GPS TimeStamp 06 25 2010 16 24 48 GPS Seconds Since Last Read 2s Saving GPS Display Data To save the current GPS data displayed 1 Press Save Recall 9 2 Then Save File Picture PNG A menu opens to enable naming the file you are saving png More GNSS Settings 1 Press System 7 System Configuration GNSS Se...

Page 789: ...isplay an Unlock message while it acquires a lock to an external or GPS source How to select Frequency Reference Source 1 Press System 7 System Configuration Frequency Ref Freq Ref Source then 2 Then choose from the following Int Internal frequency reference Ext External frequency reference Connect the 10 MHz External Reference to the Ref In Trig In SMA f connector on the FieldFox top panel The Fi...

Page 790: ...to a frequency reference source see the FieldFox specifications in Appendix B Specifications Data Sheet Reference OUT The internal 10 MHz frequency reference is available from the Ref Trig output connector on the right side panel Use this signal as a common frequency reference when making measurements using external equipment See this connector in Top Panel on page 41 Variable Voltage Source Opt 3...

Page 791: ...s TRIPPED press to re enable the voltage source output Then set Source ON Status Line ON OFF Turn ON and OFF the voltage source status line that appears near the top of the screen The status line is always ON while making Voltage Source settings Hi Impd Load ON OFF Enables Disables low current use Step and high current use Ramp Default OFF Low current Step Security Level For security reasons you c...

Page 792: ...ify files that are saved The Date and Time can also be set by synchronizing with GPS satellites Learn more in GPS Distance Settings on page 776 How to Update Date and Time using Internet This method of setting the Date and Time does NOT have the security restrictions of the other methods listed below This method will NOT set the correct Time Zone You must do that using the manual method See below ...

Page 793: ...e LAN settings to be used to communicate with the Data Link Software and connect to the FieldFox for remote SCPI operation Learn more about Data Link at www keysight com find fieldfoxsupport Because of licensing security the manual and GPS Sync methods to set Date and Time are restricted as follows Can be set backward no more than 5 hours at a time Can be set forward any amount of time Can be set ...

Page 794: ...s feature The default hostname is generated automatically Obtain IP Choose from DHCP IP Address is assigned dynamically If your server supports this feature the IP Address for the FieldFox is assigned each time it is started Static Set the IP Address manually The Address remains until you change it Table 31 1 LAN LEDs LAN LEDs When FieldFox is connected to the LAN the flashing LAN LEDs have the fo...

Page 795: ...shed Power ON When the FieldFox is without a power source this setting allows the FieldFox to power ON when the DC Adapter is inserted without pressing the power button How to set Power ON 1 Press System 7 System Configuration More Power ON 2 Then choose from the following Auto The FieldFox will power ON when the DC Adapter is inserted Manual The FieldFox will power ON only when the power button i...

Page 796: ... along with this message Copying package Do not remove install media When the installation is completed the FieldFox reboots How to backup files This procedure backs up your user data to a USB or SD card See also How to restore files on page 797 From the initial Installer menu 1 Press Utility Backup Data A message is displayed Choose backup file location 2 Then choose either SD Card or USB A progr...

Page 797: ... Or Press Restore Data A message is displayed This option will COMPLETELY ERASE existing user data ARE YOU SURE Then No to return to the previous menu without restoring files Or Press Yes Then choose either SD Card or USB A progress bar and a message is displayed Restoring user data Service Diagnostics The Service diagnostics menu is generally used to display service related information To access ...

Page 798: ...he Factory CalReady Calibration shows the date and time that the factory cal was performed for each test port and the Thru connection The format is P1 date time P2 date time P1 P2 date time The factory calibration is updated when you send your FieldFox to Keysight for Instrument Calibration Learn more in Appendix C Instrument Calibration Event Log The Event Log shows the information that has appea...

Page 799: ...ia that is inserted mini SD card or USB flash drive is NOT erased The Lost Clusters folder and files are NOT erased because they are part of the file system housekeeping How to Erase User Data 1 Press System 7 Service Diagnostics Advanced Erase User Data 2 Then Confirm Erase Then the following occurs All data files and folders are deleted from the UserData partition The FieldFox is rebooted which ...

Page 800: ...Fan Control 3 These softkeys are for informational purposes only Fan Mode Auto Manual is not selectable Manual Speed Medium this is the default No other speeds are selectable Fan RPM displays the current fan RPM Fan Temp displays the current fan air temperature Back to exit the fan control softkey menu Figure 31 10 Fan Control Softkeys Informational Use Only Not Editable If the FieldFox displays a...

Page 801: ... Initial Fan Stuck Error Message Displays For a Few Seconds If the FieldFox displays a FanStuck or Error Internal Fan has stopped spinning message to avoid incorrect measurements and possibly damaging your FieldFox shut your FieldFox down and contact Keysight Refer to Contacting Keysight on page 5 If the FieldFox displays a Fan Service message the fan needs replacing Call Keysight and request a fa...

Page 802: ...802 Keysight N9938 90006 User s Guide System Settings Understanding the Fan Controls Figure 31 12 Persistent Fan Stuck Error Message Figure 31 13 Fan Service Message ...

Page 803: ...ldFox screen In addition files can be saved to the internal memory a USB Flash drive or a standard SD card In this Chapter Save Files on page 804 Recall Files on page 809 Move Copy Files on page 809 Set File Type and Select Device on page 810 Manage Files on page 813 Manage Folders on page 815 Edit Keywords on page 815 Prefixes and Suffixes for Filenames on page 816 See Also Erase User Data on pag...

Page 804: ...top of the current labeler screen see following image check the File Type to save and Device Internal USB Storage Card to which the file is saved Learn how to change these settings in Set File Type and Select Device on page 810 4 Then use the labeler to specify a filename FieldFox State files are intended to be recalled on the same instrument model on which they were saved Sometimes you may able t...

Page 805: ...rnal memory An example for transferring an image in the FieldFox Programming Guide via FieldFox Manuals Firmware Software and Product Support Please note that the receiving computer program needs to be able to handle the binary block transfer See also What Should I Do If My USB Flash Drive Could Not Be Recognized by FieldFox Technical Support Knowledge Center Open keysight com Insert only ONE USB ...

Page 806: ...806 Keysight N9938 90006 User s Guide File Management Saving and Recalling Files Figure 32 1 I Q Analyzer Mode IQA MATLAB File Save ...

Page 807: ...splay on the FieldFox screen Learn about Titles in How to Manage files on page 813 Move the cursor see section below How to move the cursor then press Select to add the cursor character to the end of the existing filename Back Space to erase the last character s from the end of a filename Press Shift to toggle keyboard between lower case and upper case characters Press Alt Keyboards to display the...

Page 808: ...above the current filename is File_0 The cursor is on the custom DTF_VSWR keyword The file will be saved to USB flash drive File Type is Trace State Instrument State How to move the cursor Use the rotary knob to move cursor on the same row The cursor will change rows when it comes to a row end Use the arrows to move the cursor up and down the rows When the current filename is complete Press Done t...

Page 809: ... differences in the CalRdy calibration data may result in differences between the displayed traces Image Files The FieldFox can open and display png jpg and jpeg images How to Recall a File 1 Press Save Recall 9 2 Then Recall File or Enter 3 Navigate to the file to be recalled using the Up Down arrow keys Optional Sort by Name to list the current files by name Optional Sort by Date to list the cur...

Page 810: ...nfirmation message of a successful file copy 8 Cancel to cancel copy file and return to the previous menu Set File Type and Select Device The following File TYPE and DEVICE settings are used to determine the type of file to save and the location to be used for all file operations These two settings remain through an instrument preset but are reset to the default values when the FieldFox power is s...

Page 811: ...Fox When recalled the FieldFox sweep is set to Hold Picture PNG Saves a 640 x 453 pixel image of the FieldFox screen to a png file The picture does NOT include the softkeys Data csv Saves trace data from the current Mode to a csv file This format can be imported into spreadsheet software such as Microsoft Excel Column A is always the frequency at which the data is measured In SA Mode all visible d...

Page 812: ...m Real Sxx Imag Sxx S2P NA Mode ONLY saves 2 port data for the active trace s2p Files contain 1 stimulus value and 4 S parameters total of 9 scalar values Stim Real S11 Imag S11 Real S21 Imag S21 Real S12 Imag S12 Real S22 Imag S22 Only data traces are saved not memory traces Corrections When parameters are corrected data is returned even when not displayed Data is returned with the correction typ...

Page 813: ...ing chain of the active trace See the FieldFox data processing chain at the Supplemental Online Help https edadocs software keysight com kkbopen fieldfox manuals firmware software and product support 589310103 html via FieldFox Manuals Firmware Software and Product Support Learn more about System Preferences in Preferences on page 770 Manage Files Files that are stored in the FieldFox internal mem...

Page 814: ...of the displayed files Rename Files Enter the string in the filename or filenames that are to be replaced Replace With Enter the string that is to be replaced by the characters entered with the String to Replace softkey Prefix Enter a prefix one time that the current filename or filenames are to be renamed To add a prefix to subsequent filenames persistent refer to How to edit the Prefix and Suffi...

Page 815: ...ywords using the following Edit Keywords function Refer to Edit Keywords in Edit Keywords on page 815 Delete Folder The selected folder and its contents are deleted after a warning prompt is displayed A Parent folder or system folder can NOT be deleted Copy Folder The selected folder and its contents are copied and a message is displayed telling you that the copy was successful Then select a devic...

Page 816: ... When the selected keyword is complete Press Done to save all keywords and close the Edit Keywords labeler These keywords will exist on the FieldFox until changed Press Cancel to close the labeler without saving changes Prefixes and Suffixes for Filenames The prefix and suffix Auto Append can be used together to organize files Once set and enabled they are automatically entered as the beginning Pr...

Page 817: ...n page 818 Last File to use the last filename saved as your filename for subsequent saved filenames The Edit Prefix Auto Append Edit Number Suffix and Edit Suffix softkeys are grayed out inactive User to use the user selected prefix All softkeys are active unless Auto Append is disabled then Edit Number Suffix is grayed out inactive Learn more see How to enable disable the Prefix Suffix persistent...

Page 818: ...e cursor Use the rotary knob to move cursor on the same row Use the arrows to move the cursor up and down the rows When the Prefix is complete Press Done to save the Prefix and close the labeler This Prefix will exist on the FieldFox until it is changed Press Cancel to close the labeler without saving changes When the Suffix is complete Press Done Edit to save the Suffix and close the labeler This...

Page 819: ...nd Recalling Files How to enable disable Auto Append Number and Date 1 Press Save Recall 9 More Prefix Suffix 2 Then Auto Append OFF default to disable the Auto Append number suffix on subsequently saved files The Edit Number Suffix softkey is grayed out inactive ...

Page 820: ...ey will appear ONLY when a compatible printer is connected 2 Then press Save Recall 9 3 Then Print and choose from the following Printer Page nSetup Confirm that the printer is connected and configured properly The Status line should read Ready 4 Make other print settings as desired a Select Files nfor Printing Print up to 16 PNG images on one page that are stored on the Internal drive Images can ...

Page 821: ... the FieldFox Power on the instrument Click System 7 System Diagnostics System Information and find the FieldFox serial number On your PC Open the Keysight IO Libraries software Connection Expert and connect to the FieldFox using the VISA connection Refer to the Keysight Connection Expert Help In the Keysight Interactive IO window Type in your SCPIs on the Command line and click Send Command Read ...

Page 822: ...822 Keysight N9938 90006 User s Guide Using the Mini USB Port to send SCPI Commands and Queries Mini USB Connection to PC with IO Libraries Figure 33 1 Keysight Interactive IO Window ...

Page 823: ...uge Learn more in the following section Viewing the Battery Charge Status on page 823 Charging the Battery on page 825 Reconditioning Battery on page 828 Battery Care on page 828 Maximizing Battery Life on page 828 Lithium Ion Battery Disposal on page 829 Install the Lithium Ion Battery on page 30 To conserve battery power on page 31 For the Battery on page 836 Table 34 1 Front Panel Icons Icon St...

Page 824: ...f charging current 3 Battery Temperature internal temperature of the battery as measured by a sensor embedded in the battery 4 Present Run Time to Empty minutes of power remaining based on amount of current being used now 5 Charge Cycles number of charge cycles the battery has experienced Charge cycle defined as 80 change in relative state of charge Built In Battery Gauge Each lithium ion battery ...

Page 825: ...nt The FieldFox circuitry ALWAYS prevents the battery from discharging to a level that is damaging However if the battery is completely discharged the FieldFox may not turn ON If this occurs the battery can still be charged either internally or externally Because a lithium ion battery has no memory effect you can charge a battery at any time regardless of the current charge status Internal Chargin...

Page 826: ...ctor on the FieldFox side panel then plug the adapter into an AC outlet FieldFox ON Charging is indicated by a battery icon in the upper right of the front panel screen FieldFox OFF Charging is indicated by the FieldFox power LED glowing amber with its intensity increasing from dim to bright every few seconds This pattern repeats until the LED turns off when charging is done Learn more on Front Pa...

Page 827: ...arged sequentially on a first come first served basis though a discharge can be performed in the left bay while the right bay is charging For more information refer to the Instruction Manual included with the external battery charger Read the safety information in For the External Battery Charger N9910X 872 on page 835 External Battery Charger LED Charging Status Green Fully charged Green flashing...

Page 828: ...y Refer to Lithium Ion Battery Disposal on page 829 Operation with a degraded battery could result in damage to the FieldFox Maximizing Battery Life If AC power is not continuously available Ex in a field environment use the battery and recharge it when it holds a 20 to 50 charge as shown on the screen s battery charge icon At this charge level 2 or 3 segments show on the battery gauge If the Fiel...

Page 829: ...ithium Ion Battery Disposal When you notice a large decrease in charge capacity after proper recharging it s probably time to replace the battery Lithium Ion batteries need to be disposed of properly Contact your local waste management facility for information regarding environmentally sound collection recycling and disposal of the batteries Regulations vary for different countries Dispose of the ...

Page 830: ...830 Keysight N9938 90006 User s Guide Working with the Lithium Ion Battery Lithium Ion Battery Disposal ...

Page 831: ...ement Control and Laboratory Use and the FieldFox is supplied in a safe condition The FieldFox is also designed for use in Installation Category II and pollution Degree 2 per IEC 61010 1 Read the following safety notices carefully before you start to use this FieldFox to ensure safe operation and to maintain the product in a safe condition The input terminals for this product are classified as Mea...

Page 832: ...oduct Return the product to Keysight Technologies or a designated repair center for service to ensure that safety features are maintained Applicable local or national safety regulations and rules for the prevention of accidents must be observed in all work performed Ensure that the connections with information technology equipment comply with IEC950 I EN60950 Observe all ratings and markings of th...

Page 833: ...nergizing the instrument The power cord and connectors shall be compatible with the connector used in the premise electrical system Failure to ensure adequate earth grounding by not using the correct components may cause product damage and serious injury The measuring terminals on this instrument are designed to be used with external signals described in Measurement Category NONE but NOT with exte...

Page 834: ...ront panel switch is only for the DC power within the instrument and not for the AC DC adapter Alternately an AC switch or circuit breaker which is readily identifiable and is easily reached by the operator may be installed and used as a disconnecting device to remove mains power from the AC DC adapter To avoid overheating always disconnect the FieldFox from the AC DC adapter before storing the Fi...

Page 835: ...to be robust against the environmental stresses of Storage Transportation and End use those stresses include but are not limited to temperature humidity shock vibration altitude and power line conditions Test Methods are aligned with IEC 60068 2 and levels are similar to MIL PRF 28800F Class 3 If charging batteries externally use the optional external charger available from Keysight or another SMB...

Page 836: ...torage The only instructions related to storage have to do with temperature and are listed below Temperature 1 month 20 C to 45 C Temperature 6 month 20 C to 40 C Temperature 12 month 20 C to 35 C Rating 10 8V 6400mAh 70Wh Lithium ion batteries Must not be exposed to high temperatures 70 C or fire Must be kept away from children Must not be short circuited Must be replaced only with Keysight quali...

Page 837: ...cording to manufacturer s instructions If you are charging the batteries internally even while the FieldFox is powered off the FieldFox may become warm Allow for proper ventilation Do NOT run the FieldFox with the vents blocked or in the carrying case Do not discharge the battery using any device except the FieldFox or the external battery charger N9910X 872 When the battery is used in a device ot...

Page 838: ... or shocks Do not solder directly onto the battery Do not expose the battery to water or salt water or allow the battery to get wet Do not disassemble or modify the battery The battery contains safety and protection devices which if damaged may cause the battery to generate heat explode or ignite Do not place the battery in direct sunlight or use or store the battery inside cars in hot weather Doi...

Page 839: ...r than those specified it may damage the battery or reduce its life expectancy If the device causes an abnormal current to flow it may cause the battery to become hot explode or ignite and cause serious injury For a Korean battery safety consideration translation refer to Appendix D Korean Battery Safety Translation For a Russian battery safety consideration translation refer to Appendix E Russian...

Page 840: ...ng Overdischarge Voltage This prevents the battery from discharging if the voltage across any cell drops below approximately 2 5 V Once the overdischarge voltage protection is tripped the voltage across each cell must be charged to approximately 3 V to reset the protection and permit discharging Primary Overcharge Current This prevents the battery from being charged if the average charging current...

Page 841: ... or lost data due to a reverse charge polarity applied to the battery terminals Primary Overtemperature The maximum operating temperature of this fuse is 85C An overtemperature cutout permanently opens at 85C with no recovery Secondary Overtemperature A second PTC polyfuse built into each Li ion cell will open up and limit current flow at high currents Tertiary Overtemperature A current interrupt ...

Page 842: ...e This prevents the battery from discharging if the voltage across any cell drops below approximately 2 6 V Once the overdischarge voltage protection is tripped the voltage across each cell must be charged to approximately 3 V to reset the protection and permit discharging Primary Overcharge Current This prevents the battery from being charged if the average charging current reaches or exceeds 3 5...

Page 843: ...arging and discharging transistors will open up and limit current flow to the battery terminals as a function of very high currents This protection is resettable once the overstress condition is removed Secondary Overtemperature A second PTC polyfuse built into each Li ion cell will open up and limit current flow as a function of very high currents Tertiary Overtemperature A current interrupt devi...

Page 844: ...persons working with the FieldFox To prevent instrument damage practice industry accepted techniques for handling static sensitive devices when using the FieldFox Very often coaxial cables and antennas also build up a static charge which if allowed to discharge by connecting to the FieldFox may damage the instrument input circuitry To avoid such damage it is recommended to dissipate any static cha...

Page 845: ...e This symbol indicates the surface can be hot This symbol indicated the product is sensitive to electrostatic discharge This symbol identifies the Protective Conductor terminal This symbol indicates the equipment is protected throughout by double or reinforced insulation The CE mark is a registered trademark of the European Community if accompanied by a year it is the year when the design was pro...

Page 846: ...mark It includes the marking s identifier code The crossed out wheeled bin symbol indicates that separate collection for waste electric and electronic equipment WEEE is required as obligated by the EU DIRECTIVE and other National legislation Please refer to www keysight com go takeback to understand your trade in options with Keysight in addition to product takeback instructions China Restricted S...

Page 847: ...when the design was proven It indicates that the product complies with all relevant directives Eurasian Conformity Mark indicating conformance to all technical regulations of the Eurasian Customs Union Dispose of properly Do not throw batteries away collect as small chemical waste Recycle the old battery properly Consult local or country regulations related to disposal Keep battery away from exces...

Page 848: ...plicable UK regulations The CSA mark is a registered trademark of the CSA international Canada EMC label Interference Causing Equipment Standard for industrial scientific and medical ISM equipment Matériel industriel scientifique et médical ISM CE ICES ISM label This is a space saver label that combines three markings CE with CAN ICES see above and ISM see below The RCM mark is a registered tradem...

Page 849: ...position of the power line switch This symbol indicates the input power required is AC This symbol indicates DC voltage This symbol indicates a three phase alternating current This symbol indicates frame or chassis terminal This symbol indicates the presence of a laser device This symbol identifies the Protective Conductor Terminal This symbol indicates the equipment is protected throughout by dou...

Page 850: ...kaging All labels and symbols may not apply to the instrument The UL Marks are registered certification marks of Underwriters Laboratories Inc UL It means that UL has tested and evaluated representative samples of that product and determined that it meets UL s safety requirements When accompanied by a C and US it indicates compliance to both Canadian and US requirements NOM Mark Normality of Mexic...

Page 851: ...rrent DC equipment CAUTION risk of danger refer to safety information in manual DC connector polarity Ingress Protection Code Operating instructions should be considered when operating the device U S Energy efficiency rating Eurasian Conformity Mark indicating conformance to all technical regulations of the Eurasian Customs Union UL component mark Recognized in Canada and the United States Operati...

Page 852: ...tional Canada EMC label Interference Causing Equipment Standard for industrial scientific and medical ISM equipment Matériel industriel scientifique et médical ISM CE ICES ISM label This is a space saver label that combines three markings CE with CAN ICES see above and ISM see below The RCM mark is a registered trademark of the Australian Communications and Media Authority This is a combined marki...

Page 853: ...alibration facility and to the calibration facilities of other International Standards Organization members This symbol marks the standby position of the power line switch This symbol marks the ON position of the power line switch This symbol marks the OFF position of the power line switch This symbol indicates the input power required is AC This symbol indicates DC voltage This symbol indicates a...

Page 854: ...isit http www keysight com go conformity For more information see Where to Find the Latest Information on page 3 EMC Complies with the following standards dates and editions are cited in the Declaration of Conformity CISPR Pub 11 Group 1 class B AS NZS CISPR 11 ICES NMB 001 This ISM device complies with the Industry Canada Interference Causing Equipment Standard ICES 001 Cet appareil ISM est confo...

Page 855: ...e critical for accurate and repeatable measurements The following table contains for tips on connector care Prior to making connections to your analyzer carefully review the information about inspecting cleaning and gauging connectors For course numbers about additional connector care instruction contact Keysight Technologies ...

Page 856: ...h the DC power cord removed in a well venti lated area and with the power to the FieldFox turned OFF Allow all residual alcohol moisture to evapo rate and the fumes to dissipate prior to energizing the instrument Use any abrasives Get liquid into plastic support beads Gaging Connectors Do Do Not Clean and zero the gage before use Use the correct gage type Use correct end of calibration block Gage ...

Page 857: ...lyzers N99xxB User s Guide B Specifications Data Sheet To ensure the highest accuracy and consistency the FieldFox Specifications are now stored ONLY at https www keysight com us en assets 7018 06516 data sheets 5992 37 02 pdf ...

Page 858: ...858 Keysight N9938 90006 User s Guide Specifications Data Sheet ...

Page 859: ...rated at 12 month intervals ensures that the analyzer maintains performance within the operating specifications If you need the analyzer to maintain more consistent operation you may want to have the instrument calibrated more often Connector wear is a bigger factor and depends on the number of connections that are made The test ports become noticeably worn after 500 to 700 connections This could ...

Page 860: ...alibrated and is operating within the published specifications ANSI Z540 Calibration Includes the test data from the calibration and the certificate of calibration stating the instrument has been calibrated using a process in compliance with ANSI Z540 1 and is operating within the published specifications ISO 17025 Calibration Includes the test data from the calibration and the certificate of cali...

Page 861: ...861 Keysight Handheld Analyzers N99xxB User s Guide D Korean Battery Safety Translation ...

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Page 871: ...871 Keysight Handheld Analyzers N99xxB User s Guide E Russian Battery Safety Translation ...

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Page 883: ...883 Keysight Handheld Analyzers N99xxB User s Guide F Keysight Software End User Licensing Agreement EULA ...

Page 884: ...884 Keysight N9938 90006 User s Guide Keysight Software End User Licensing Agreement EULA ...

Page 885: ...Keysight N9938 90006 User s Guide 885 Keysight Software End User Licensing Agreement EULA ...

Page 886: ...886 Keysight N9938 90006 User s Guide Keysight Software End User Licensing Agreement EULA ...

Page 887: ...15 appendix B 855 857 attenuation 159 259 307 325 Audio Beep 216 275 Average Type 202 273 334 Averaging VVM 606 averaging 54 102 753 VVM 606 avoid overpowering 36 B Band Power Marker IQA 310 Band Power Marker SA mode 214 310 311 313 740 Band Span Marker IQA 311 bandpass mode 67 68 battery care 828 charge status viewing 823 charge status viewing 756 823 charging 31 external 827 internal 825 disposa...

Page 888: ...ttings 66 78 91 115 294 start and stop distance 64 DTF Measurement 66 78 DTF settings 66 DTF Start and Stop Distance 67 79 Dynamic Range 112 dynamic range 112 E ECal 131 Edit a Cable File 70 DTF 70 82 edit keywords 815 edit enable and disable the current prefix 816 818 edit enable and disable the current suffix 816 817 Electrical Delay 101 Electromagnetic Interference 317 EMF measurements how to m...

Page 889: ... an sta file 809 save display settings as preferences 772 file 804 select CAT mode 51 550 CAT mode measurements 51 550 EMI mode 322 NA formats 98 RTSA mode 256 SA mode 151 256 set attenuation 159 259 307 325 bandpass mode ON 68 date and time 791 frequency context 696 frequency range 53 151 256 257 322 323 696 output power 57 58 107 606 power meter display units 567 res BW 185 265 330 700 resolutio...

Page 890: ...age and power 36 Meas UNCAL error 216 meas UNCAL error 186 187 measurement selection Direction Finding 519 measurement selection EMI Mode 317 measurement selection IQA Mode 289 measurement selection Mapping Mode 467 measurement selection NA Mode 89 measurement selection OTA Mode 341 measurement selection Phased Array Antenna Mode 415 measurement selection USB antenna Mode 455 measurement parameter...

Page 891: ...m single sweep while in Hold 757 Phase Offset 101 Phased Array Antenna measurements about 418 phased array antenna settings 762 Phased Array Antenna mode settings 427 Phased Array Antenna Record Playback 448 Playback Configuration 283 286 404 451 511 539 543 Points EMI mode 332 Points SA mode 201 270 699 points EMI mode 332 points RTSA mode 270 points SA mode 201 699 Port Extensions 108 power mete...

Page 892: ... extender 762 language 772 773 Mapping 482 mapping 762 OTA 359 PAA 427 762 phased array antenna 762 preset 757 RTSA mode 256 SA mode 151 256 277 530 spectral emission mask 762 USB antenna 461 USB antennas 762 VVM mode 604 Settings EMF 227 settings how to set up Mapping 485 smoothing 55 Source Control with USB Power Meter 564 S parameters 91 spectral emission mask settings 762 Spectrogram Display 2...

Page 893: ...vector voltmeter 601 vector voltmeter See VVM 601 Velocity Factor 69 109 verifying integrity of calibration 144 jumper cables 144 verifying integrity of calibration jumper cables 144 video bandwidth 186 Video Bandwidth SA mode 186 Video triggering 105 195 266 video triggering 195 200 266 viewing charge status battery 756 823 installed options 772 783 viewing and changing frequency extender 763 Vol...

Page 894: ...Keysight N9938 90006 User s Guide Index ...

Page 895: ......

Page 896: ...This information is subject to change without notice Keysight Technologies 2014 2022 Edition 1 September 30 2022 www keysight com ...

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