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 89

Keysight N9923A Handheld Analyzer
User’s Guide

6

DTF (Distance to Fault) Measurements

CAT Mode 

Distance to Fault

 (DTF) measurements are generally used to locate 

problems, or faults, in a length of cable or transmission 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 

Chapter 5, 

“CAT (Cable and Antenna Test) Mode”, on page  75

.

In this Chapter

Optional settings

“How to make DTF Measurements” on page 90

“DTF Settings Table” on page 91

“DTF Measurement (Format)” on page 91

“DTF Start and Stop Distance” on page 92

“Frequency Mode” on page 92

“Coupled Frequency” on page 93

“Cable (Correction) Specifications” on page 94

“Window Settings” on page 97

“DTF Units” on page 98

“Calculated DTF values” on page 98

“About Alias Faults” on page 98

“All about Markers” on page 174

“All about Limit Lines” on page 185

“Saving and Recalling Files” on page 192

Trace Math is NOT available in DTF Measurements.

Summary of Contents for N9923A

Page 1: ...Keysight Technologies FieldFox RF Network Analyzers N9923A User s Guide ...

Page 2: ... U S government customers under its standard 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 p...

Page 3: ...riodically Keysight releases software updates to fix known defects and incorporate product enhancements To search for software updates for your product go to the Keysight Technical Support website at http www keysight com find fieldfoxsupport A 08 15 Firmware Release Updates N991xA 2xA 3xA with serial number prefixes 5607 Only For customers upgrading FieldFox firmware the following is a list of ch...

Page 4: ...w keysight com find assist If you do not have access to the Internet please contact your Keysight field engineer In any correspondence or telephone conversation 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 ...

Page 5: ...N OFF Settings 23 Power Button LED Status 24 FieldFox High Temperature Protection 24 How to monitor the internal FieldFox temperature 24 Temperature Control Mode 25 High Temp Shut down 25 Avoid Overpowering the FieldFox 25 Take the FieldFox Tour 27 Front Panel 27 Top Panel 30 Side Panel 30 Screen Tour 32 How to Enter Numeric Values 34 Multiplier Abbreviations 34 Connector Care 35 3 NA Network Anal...

Page 6: ... A and B 56 Increase Dynamic Range 58 4 Time Domain Option 010 Overview 63 Time Domain Transform Settings 64 Transform Settings Table 64 Frequency Range and Points 64 Stimulus Mode 65 Set Frequency Lowpass 65 Start Stop Time 65 Distance Units 66 Window Layout 66 Transform Window 66 Window Settings 67 Line Loss and Velocity Factor 69 Data Chain 70 Trace Settings 71 Transform Enable 71 Gate Enable 7...

Page 7: ...ow to make a 1 port Cable Loss Measurement 87 2 Port Insertion Loss Measurements 88 How to make a 2 port Insertion Loss Measurement 88 6 DTF Distance to Fault Measurements How to make DTF Measurements 90 DTF Measurement Settings 91 DTF Settings Table 91 DTF Measurement Format 91 DTF Start and Stop Distance 92 Frequency Mode 92 Coupled Frequency 93 Cable Correction Specifications 94 Window Settings...

Page 8: ...122 Verify a Calibration 122 Test the Jumper Cable 122 Calibration Method Summary 123 8 Power Meter USB Mode 127 Supported Power Sensors 127 How to Connect the Power Sensor 127 USB Power Meter Settings 128 How to select Power Meter Mode 128 Average Peak 128 Zeroing 128 Frequency 129 Source Control 129 Relative and Offset Power Measurements 131 Display Units 131 Resolution 132 Averaging 132 Single ...

Page 9: ...nt Mode 148 Measurement Selection 148 Frequency Time 148 Zoom Window 149 Scale 150 Averaging 150 Video Bandwidth 151 Single or Continuous Measure 151 Resolution 152 Triggering 152 Marker Settings 155 Amplitude Markers 155 Marker Search 156 Auto Analysis 157 Pulse Top 158 Grid 158 Trace Memory 158 11 VVM Vector Voltmeter Mode Option 308 Overview 163 VVM Mode Settings 164 How to select VVM Mode 164 ...

Page 10: ... Colors 177 Marker Trace 177 Marker Format 178 Searching with Markers 179 What Is a Peak 182 Marker Functions 183 All about Limit Lines 185 How to Create Fixed Limit Lines 185 Relative Limit Lines 186 Build From Trace 187 Limit Options 187 How to Save and Recall Limits 188 All about Trace Math 189 How to display data and memory traces 189 How to perform Trace Math 189 About Math Operations 190 13 ...

Page 11: ...Settings 211 Display Brightness 211 Display Colors 211 Trace Width 212 Title 212 Edit Keywords 213 Full Screen Mode 213 Preferences 213 Quick Settings Table 213 Save and Reset Preferences 214 Global Settings Overview 215 Language 215 Battery Saver 216 Startup Mode 217 Display 217 Audio 218 Date and Time 218 GPS 219 File folders 220 System Configuration 222 Options Licensing 222 GPS 223 Frequency R...

Page 12: ...ge Status 239 Service Diagnostics Battery Screen 240 Built In Battery Gauge 240 Charging the Battery 241 Internal Charging with the AC DC Adapter 241 Using the External Battery Charger N9910X 872 243 Reconditioning Battery 244 Battery Care 244 Maximizing Battery Life 244 Lithium Ion Battery Disposal 245 17 Safety Considerations For the FieldFox 248 For the AC DC Adapter 250 For the External Batter...

Page 13: ...ormity 259 EMC 260 Safety 260 South Korean Class B EMC Declaration 260 Acoustic Statement European Machinery Directive 260 A Connector Care Review 262 B Specifications Data Sheet 264 C Instrument Calibration How Often Should I Calibrate my Instrument 265 How do I Get an Instrument Calibration 265 What Are My Choices of Instrument Calibration 266 D Korean Battery Safety Translation 268 ...

Page 14: ...14 Keysight N9923 90001 User s Guide Contents ...

Page 15: ...de on page 37 2 MHz to 4 GHz Option 104 2 MHz to 6 GHz Option 106 Forward Measurements S11 S21 Full 2 port S parameters Option 122 Adds S22 S12 and Full 2 port Calibration Cable and Antenna Test CAT Mode Option 305 Chapter 5 CAT Cable and Antenna Test Mode on page 75 2 MHz to 4 GHz Option 104 2 MHz to 6 GHz Option 106 Measurements Distance to fault DTF DTF Return Loss Return Loss dB VSWR DTF VSWR ...

Page 16: ...ase 2 Port Transmission Mag and Phase Designed for Field Environment Lightweight 6 2 lbs 2 8 kg including battery Rugged weather resistant shell with no fan vents Daylight viewable 6 5 16 5 cm color LCD Backlit keys for night use Integrated kickstand Configurable hand and shoulder straps Softcase for carrying all gear Quick Reference Guide with laminated pages Slots for removable USB Flash Drive a...

Page 17: ...battery charger N9910X 872 FieldFox Data Link Software Basic capability to print measurement traces on a PC Capability to create modify cal kit and cable definition files Help file included with the software installation Download the latest version of the software at www keysight com find fieldfoxsupport Additional Features Menus localized to 7 languages Language on page 215 Options and Features L...

Page 18: ... Guide Online off line and pdf versions http na support keysight com fieldfox help SupHelp FieldFox htm FieldFox Data Link Software and Help Free download Service Guide Free download Firmware Updates Check to see if you have the latest FieldFox firmware Conventions that are used in the Manual Hardkey indicates a front panel button The functionality of these buttons does not change The six Softkey ...

Page 19: ...safety notes for using this product are located in Chapter 17 Safety Considerations on page 247 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 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 whi...

Page 20: ...20 Keysight N9923 90001 User s Guide Overview FieldFox Manuals Software and Supplemental Help ...

Page 21: ...options are included in the shipment according to the Box Contents List 3 For any question or problems refer to Contacting Keysight on page 4 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 22: ...ge the battery Learn more about the lithium ion battery in Chapter 16 Working with the Lithium Ion Battery on page 239 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 and Battery Step Notes 1 Open the battery door Push the button on the battery compartment door while sliding the door outward 2 In...

Page 23: ...tery can be fully charged while in the FieldFox in about 4 hours with the 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 Standb...

Page 24: ...ices Standby Shut down Restart and Cancel by using the Mode 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 230 Power Button LED Status FieldFox High Temperature Protection The following features prevent degradation or damage in the event of high internal temperatures in the Fie...

Page 25: ...ve your instrument state and data that you want to keep When the temperature drops to approximately 73 C a message is displayed indicating that the FieldFox is leaving Temperature Control Mode and normal operating settings are restored High Temp Shut down In extreme situations Temperature Control mode may not stop an increase in the FieldFox internal temperature At approximately 78 C High Temperat...

Page 26: ...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 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 FieldFox ...

Page 27: ...Keysight N9923 90001 User s Guide 27 Preparing for Initial Use of Your New FieldFox Take the FieldFox Tour Take the FieldFox Tour Front Panel ...

Page 28: ... FieldFox OFF charging Power Button LED Status on page 24 3 System Displays a sub menu for system setup Chapter 14 System Settings on page 207 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 Preset on page 209 6 Enter Confirms a parameter selection or configuration 7 Marker Activates mar...

Page 29: ...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 30: ...e with and External Frequency Reference Maximum 5 5 VDC External Triggering is not used on the N9923A Frequency Reference Source on page 226 Port 2 For CAT and NA mode Contains source and B R2 receivers Maximum 50 VDC 23 dBm RF CAT Mode Settings on page 77 NA Mode Settings on page 39 Connector Description Learn More Ethernet cable connector to read trace data using the FieldFox Data Link Software ...

Page 31: ...N9912A units with serial number prefixes 5607 models the mini USB port can be connected to your PC s standard USB port to send SCPI commands Chapter 15 Using the Mini USB Port to send SCPI Commands and Queries Applies to N9912A units with serial number prefixes 5607 Only Standard USB connector used to connect a power sensor for Power Meter Mode Also used to save files to a USB flash drive Use of K...

Page 32: ...ndent 5 Scale division Mode dependent 6 Calibration Status CAT and NA Cal ON Questionable Accuracy on page 120 7 Velocity Factor Fault Meas About Velocity Factor and Cable Loss on page 94 8 Averaging Status and Count Mode dependent 9 Data Mem Display CAT and NA All about Trace Math on page 189 10 Resolution Setting Mode dependent 11 Measurement Start Freq or Distance Mode dependent 12 Bandpass Low...

Page 33: ...ance Mode dependent 15 Actual Sweep Time Mode dependent 16 Limit Line Status All about Limit Lines on page 185 17 Time and Date Date and Time on page 218 18 Marker Readout All about Markers on page 174 19 Battery Status Viewing the Battery Charge Status on page 239 20 Measurement Type CAT and NA 21 Reference Level Mode dependent 22 Reference Position Mode dependent Caption Description Learn More ...

Page 34: ... 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 35: ...n oils 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 ...

Page 36: ...36 Keysight N9923 90001 User s Guide Preparing for Initial Use of Your New FieldFox Connector Care ...

Page 37: ...on on page 41 Receiver Measurements on page 42 Multi Trace Configurations on page 43 Quick Settings on page 45 Calibration Settings on page 46 Format on page 46 Frequency Range on page 47 Scale Settings on page 48 Magnitude Offset on page 49 Electrical Delay on page 49 Phase Offset on page 50 Averaging on page 50 IF Bandwidth on page 51 Smoothing on page 51 Single or Continuous Measure on page 52 ...

Page 38: ...on page 56 Increase Dynamic Range on page 58 Why and When to Calibrate on page 103 All about Markers on page 174 All about Limit Lines on page 185 All about Trace Math on page 189 Learn how to make 75Ω ohm Measurements in the Supplemental Online Help http na support keysight com fieldfox help SupHel p FieldFox htm ...

Page 39: ...ut 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 to be...

Page 40: ...race Configurations on page 43 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 more ...

Page 41: ...ive 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 The displayed S pa...

Page 42: ...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 http na support keysight com fieldfox help SupHelp FieldFox htm Receiver measurements are NOT corrected for absolute power They are only useful for makin...

Page 43: ...ghlighted Tr2 Trace Setting Notes The 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 disa...

Page 44: ...ge a setting Use the arrows OR Press Trace 6 then select Trace 1 Trace 2 Trace 3 or Trace 4 Only traces that are shown can be activated How to maximize the viewing of the active trace Press System 7 Then Full Screen Press any key to return to the standard display x1 1 trace standard configuration x2 2 traces overlayed on a single graticule x2H 2 traces on separate graticules x3H 3 traces on separa...

Page 45: ...OT available then all available settings fit on one page To change a setting Use the arrows to highlight a setting Then press Edit The current setting changes to yellow Some settings require you to press a softkey to change the value Otherwise use the numeric keypad arrows or rotary knob to change the value When finished changing a value press Done Edit Press Dock Window to relocate the Settings t...

Page 46: ...ngs Make these settings in the same manner as Quick Settings in the previous section Format Select the display format in which to present measurement results This setting can be changed at any time without affecting calibration accuracy The marker on screen readout can be changed to formats other than the display format Learn more in Marker Format on page 178 How to select a NA Format Press Measur...

Page 47: ...uencies over which you would like to make measurements When the frequency range is changed after a calibration is performed the cal becomes interpolated Learn more in Interpolation on page 119 How to set Frequency Range This can be done in two ways Press Freq Dist Then choose from the following Start and Stop frequencies Specify the beginning and end of the sweep Center and Span frequencies Specif...

Page 48: ...ibration accuracy How to set Scale Press Scale Amptd Then choose from the following method Autoscale Automatically adjusts the Y axis to comfortably fit the Min and Max amplitude of the trace on the screen Autoscale All Autoscales all of the traces on the screen useful only for multi trace configurations 3 Set Scale Reference Level and Reference Position Scale Manually enter a scale per division t...

Page 49: ...e that changes linearly with frequency The offset slope begins at 0 Hz and continues to the stop frequency The offset value at the start frequency is then calculated from 0 Hz Then enter a positive or negative offset slope value in dB GHz using the numeric keypad the arrows or the rotary knob Press a multiplier key Learn about multiplier abbreviations in Multiplier Abbreviations on page 34 Electri...

Page 50: ...measurement you can use phase offset to add that amount and simulate the complete device measurement You can set the phase offset independently for each measurement trace How to set Phase Offset Press Scale Amptd Then More Then Phase Offset Enter a value in degrees using the numeric keypad the arrows or the rotary knob Press Enter Averaging Averaging helps to reduce the effects of random noise on ...

Page 51: ...en applied Point averaging is usually faster than sweep averaging However you may need to increase the Point Average count to obtain the same level of noise reduction as with sweep averaging While averaging is in process press Sweep 3 then Restart to restart the averaging at 1 IF Bandwidth The FieldFox converts the received signal from its source to a lower intermediate frequency IF The bandwidth ...

Page 52: ...ing calibration accuracy How to set Single or Continuous Press Sweep 3 Then choose one of the following Single Automatically sets Continuous OFF and causes FieldFox to make ONE sweep then hold for the next Single key press Hold is annotated in the upper left corner of the display when NOT sweeping and changes to an arrow while the sweep occurs Continuous Makes continuous sweeps This is the typical...

Page 53: ... time is the composite of many factors How to set Sweep Time Press Sweep 3 Then Min Swp Time Enter a value using the numeric keypad Press a multiplier key Learn about multiplier abbreviations in Multiplier Abbreviations on page 34 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 whe...

Page 54: ...arning message and beep occurs To achieve a flattened output power reduce the power level or stop frequency Then press Power Level Then enter a value using the numeric keypad the arrows or the rotary knob Press Enter System Impedance Z0 To accurately view data presented in Smith Chart format first set the System Impedance Learn how to select Smith Chart format in Format on page 46 Learn how to mak...

Page 55: ... With S11 and S22 reflection measurements the FieldFox doubles the port extension valued that you enter to account for the additional delay in the forward and reverse directions With S21 and S12 transmission measurements the port 1 and port 2 extensions are added together This accounts for the total transmission delay going through ports 1 and 2 Port extensions and Electrical Delay differ in the f...

Page 56: ...lectric VF 1 0 default setting corresponds to wave propagation through free space a vacuum How to set Velocity Factor Press Meas Setup 4 Then Port Extensions Then Velocity Factor Then enter a value between 0 1 and 1 using the numeric keypad then press Enter You can also set Velocity Factor by pressing Meas Setup 4 then Calibration settings Big Marker Display States A and B This feature available O...

Page 57: ...n page 46 Bandwidth ON Marker readout for marker bandwidth search OFF is default Learn how to set BW parameters in Searching with Markers on page 179 Big Readout For each marker readout 1 2 and 3 select from the following Marker Enter a number from 1 to 6 to create the marker 1 is created by default Trace The marker is created on this trace Tr1 is selected by default The corresponding Num Traces m...

Page 58: ... the Lin setting will be overwritten with the original Log setting Increase Dynamic Range Dynamic range is the difference between maximum input power to the FieldFox receiver without compressing the receiver and the minimum measurable power noise floor Measurement accuracy is increased when the DUT response is at least 10 dB above the noise floor For a measurement to be valid input signals must be...

Page 59: ...Keysight N9923 90001 User s Guide 59 NA Network Analyzer Mode NA Mode Settings 2 Re connect the DUT 3 Press Data Math then Data Mem ...

Page 60: ...60 Keysight N9923 90001 User s Guide NA Network Analyzer Mode NA Mode Settings ...

Page 61: ...t are NOT unique to Time Domain are documented in Chapter 3 NA Network Analyzer Mode on page 37 In This Chapter Time Domain Transform Settings Trace Settings Overview on page 63 Transform Settings Table on page 64 Frequency Range and Points on page 64 Stimulus Mode on page 65 Set Frequency Lowpass on page 65 Start Stop Time on page 65 Distance Units on page 66 Window Layout on page 66 Transform Wi...

Page 62: ...62 Keysight N9923 90001 User s Guide Time Domain Option 010 Gating Settings Start Stop Center and Span Gate Times on page 73 Gating Type on page 73 ...

Page 63: ...nds Each bend 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 sign...

Page 64: ...ettings 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 The ...

Page 65: ...m is disabled Band pass 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 Low...

Page 66: ...e 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 43 Transform Window There are abrupt transitions in a frequency domain measurement at the start and stop frequencies causing overshoot and ...

Page 67: ...ike those made on the Transform Settings table Learn how in Transform Settings Table on page 64 Window Settings Window settings provide the ability to choose between optimizing TDR measurements for resolving closely spaced faults or for the ability to measure low level faults Any of the following four methods can be used to make this same Window setting Impulse Width values are calculated from the...

Page 68: ...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 responses Default setting Medium Compromise between Min and Max window settings Minimum Best Response Resolution providing the ability to resolve between two closely spaced responses Then press Done Edit Again press Done ...

Page 69: ...ccurate measurements Line Loss and Velocity Factor should be considered About Velocity Factor and Line Loss Velocity Factor is a property of the physical material of a cable A VF of 1 0 corresponds to the speed of light in a vacuum or the fastest VF possible A polyethylene dielectric cable has VF 0 66 and a cable with PTFE dielectric has VF 0 7 Line Loss is specified in dB m or ft In addition to t...

Page 70: ...e 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 though the signal traveling through 100 meters was increased by 20 dB Therefore the response will show 0 dB for 100 reflection Data Chain This setting available only on the Table Settings reverts to S...

Page 71: ...main transform for the specific trace Select the trace Press Measure 4 Then Transform Then choose from On Trace displays Time Domain data 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 On Trace displays Time Domain data Off Trace displays frequency domain data ...

Page 72: ...ed 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 sh...

Page 73: ...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 64 Gating Type This setting defines the type of filtering that will be performed for the gating function The gate start and...

Page 74: ... 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 dist...

Page 75: ...ine Help http na support keysight com fieldfox help SupH elp FieldFox htm CAT Mode Distance to Fault measurements are discussed in Chapter 6 DTF Distance to Fault Measurements on page 89 Measurement Selection on page 77 Quick Settings Table on page 78 Frequency Range on page 79 Scale Settings on page 79 Averaging on page 80 Smoothing on page 81 Single or Continuous Measure on page 81 Resolution Nu...

Page 76: ...ments on page 86 2 Port Insertion Loss Measurements on page 88 Chapter 7 Calibration for NA CAT and VVM Modes on page 101 All about Markers on page 174 All about Limit Lines on page 185 All about Trace Math on page 189 Making 75Ω ohm Measurements at the FieldFox Supplemental Online Help http na support keysight com fieldfox help SupHelp FieldFox htm ...

Page 77: ...fer to Chapter 6 DTF Distance to Fault Measurements on page 89 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 measurement The frequency range settings for these two measurements can be coupled or uncoupled Learn more on page 84 Calibrations are applied to both traces When in Hold mode and...

Page 78: ... axis of the display is impedance ohms TDR DTF TDR and DTF are displayed Quick Settings Table 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 How to view and change Quick Settings Press Meas Setup 4 T...

Page 79: ...encies half on either side of center Follow each setting by entering a value using the numeric keypad arrows or the rotary knob After using the keypad select a multiplier key Learn about multiplier abbreviations in Multiplier Abbreviations on page 34 After using the arrows or the rotary knob press Enter The amount of frequency increment is based on the current span and can NOT be changed in CAT Mo...

Page 80: ...e same data point over several consecutive sweeps Average Count determines the number of sweeps to average the higher the average count the greater the amount of noise reduction An average counter is shown in the left edge of the screen as Avg N This shows the number of previous sweeps that have been averaged together to form the current trace When the counter reaches the specified count then a ru...

Page 81: ...moothing Press BW 2 Then Smoothing ON OFF Then Sm Aperture and enter a value between 0 and 25 percent using the numeric keypad Press Enter Single or Continuous Measure This setting determines whether the FieldFox sweeps 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 trace This setting c...

Page 82: ...rogramming Guide at http na support keysight com fieldfox help Sweep Time The fastest possible sweep time is always used as the default setting Use the Min Swp Time setting to slow the sweep time when measuring long lengths of cable Learn more in the FieldFox Supplemental Help at http na support keysight com fieldfox help SupHelp FieldFox htm The actual sweep time is shown on the FieldFox screen S...

Page 83: ...wer High Default setting 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 263 for expected power levels Low Sets output power to approximately 45 dBm FLAT across the displayed FieldFox frequency span Man Set output power to an arbitrary value FLAT across ...

Page 84: ...ss measurement frequency settings are made in the usual manner Learn how at Frequency Range on page 79 When a new Start or Stop frequency is selected Coupled Frequency is automatically set to OFF The DTF measurement is made using the frequencies as determined by the DTF Frequency Mode setting Learn more in DTF Measurement Settings on page 91 Nominal here means a general descriptive term or design ...

Page 85: ...nterfering signal in the area Continue to make measurements with Interference Rejection ON However this will slow the measurement speed Once enabled up to SIX sweeps may be required before the interfering signal is neutralized This setting can be changed at any time without affecting calibration accuracy How to set Interference Rejection Press Meas Setup 4 Then Interference Rejection current setti...

Page 86: ...ns the FieldFox to known settings Select Mode then CAT TDR Cable and Antenna Test Then Return Loss Default measurement Press Freq Dist and enter Start and Stop frequency values of the measurement Press Meas Setup 4 then Settings to make appropriate settings before calibrating Disconnect the jumper cable or DUT and press Cal 5 then follow the calibration prompts Reconnect the jumper cable or DUT Th...

Page 87: ...the jumper cable or adapter Learn more about Calibration in How to Perform a Calibration on page 104 9 Connect the cable to be tested 10 Connect a LOAD at the end of the cable to be tested This limits the reflections to faults that are located in the cable under test 11 Press Trace 6 then Data Mem to store the trace into Memory 12 Remove the LOAD and leave the end of the cable to be tested open 13...

Page 88: ... into the RF IN connector Both ends of the DUT must be connected to the FieldFox either directly or indirectly using the cable used in the normalization cal Insertion loss simply means loss through a device usually expressed in dB It is exactly the same measurement as S21 Transmission in NA Mode 2 port Insertion Loss measurements are generally more accurate than 1 port Cable Loss measurements How ...

Page 89: ...5 CAT Cable and Antenna Test Mode on page 75 In this Chapter Optional settings How to make DTF Measurements on page 90 DTF Settings Table on page 91 DTF Measurement Format on page 91 DTF Start and Stop Distance on page 92 Frequency Mode on page 92 Coupled Frequency on page 93 Cable Correction Specifications on page 94 Window Settings on page 97 DTF Units on page 98 Calculated DTF values on page 98...

Page 90: ...urn the FieldFox to the default settings 3 Then Mode then CAT 4 Then Distance To Fault 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 104 7 Disconnect any components or antenna that should NOT be measured and connect a LOAD at ...

Page 91: ... 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 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 Bott...

Page 92: ...rows 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 knob then Enter Frequency Mode All DTF measurements are made with freq...

Page 93: ...ly set Frequencies in Bandpass Mode Press Freq Dist Then Min Start Freq and type the start frequency to use for the DTF measurement Then Max Stop Freq and type the stop frequency to use for the DTF measurement OR Press More Then Max Freq Span and type the frequency range to use for the DTF measurement Then Center Frequency and type the center frequency of the range to use for the DTF measurement T...

Page 94: ...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 respo...

Page 95: ...les 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 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...

Page 96: ...hoose 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 will...

Page 97: ... ability 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 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 abili...

Page 98: ...ault 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 97 Ma...

Page 99: ... 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 un terminated 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 100: ...100 Keysight N9923 90001 User s Guide DTF Distance to Fault Measurements DTF Measurement Settings ...

Page 101: ...page 103 CalReady on page 104 How to Perform a Calibration on page 104 QuickCal Option 112 on page 106 Mechanical Cal on page 108 ECal on page 110 Simple Response Cals on page 112 View Cal on page 114 Calibration Type on page 114 Enhanced Response Optimization on page 119 Interpolation on page 119 Cal ON Questionable Accuracy on page 120 Compatible Mode Calibrations on page 120 Save the Calibratio...

Page 102: ... N9923 90001 User s Guide Calibration for NA CAT and VVM Modes See Also Learn How to Make 75 ohm Measurements at the FieldFox Supplemental Online Help http na support keysight com fieldfox help SupHelp FieldFox htm ...

Page 103: ...e FieldFox temperature changes more than about 10 F 5 C Learn more in How to monitor the internal FieldFox temperature on page 24 When the connection to the DUT changes requiring a different jumper cable or adapter Definitions DUT Device Under Test The cable antenna transmission line amplifier or anything else that is connected to the FieldFox that is to be measured Calibration Standards OPEN SHOR...

Page 104: ... 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 correction in place When measuring a DUT using a jum...

Page 105: ...FieldFox test ports Learn more in QuickCal Option 112 on page 106 Mechanical Cal ECal Using mechanical cal standards from a cal kit perform an accurate calibration at one or both test ports adapters or jumper cables Full 2 port mechanical calibration is the most accurate calibration available with FieldFox Learn more in ECal on page 110 User Cal OFF ON Turns ON and OFF the effects of the user cali...

Page 106: ...rements of devices with female 3 5 mm or SMA connectors use mechanical calibration Important QuickCal Notes 7 16 connectors can be used with QuickCal ONLY up to 6 GHz Type N 75 Ohm can be used with QuickCal ONLY up to 3 GHz QuickCal cannot be used with waveguides or if the test fixture or test setup before DUT includes an attenuator How to perform a QuickCal In CAT NA or VVM Mode press Cal 5 Then ...

Page 107: ...essarily calibrate all of the displayed S parameters Learn more about Cal Types in Calibration Type on page 114 Using the arrows or rotary knob select a Cal Type then press Select and Finish Press Start Calibration No Connection Disconnect the DUT from the FieldFox If a jumper cable or adapter is required to connect the DUT to the FieldFox connect those components to the FieldFox test ports connec...

Page 108: ... the frequency span of the measurement until the error no longer appears After the calibration you can then decrease the frequency span as needed and rely on interpolation Learn more about Interpolation in Interpolation on page 119 QuickCal is also limited in how much jumper cable loss it can tolerate If QuickCal without the Load is failing then measure the Load during the QuickCal to see if that ...

Page 109: ...you want calibrated If not press Esc to terminate the calibration process then return to the Trace menu to display all of the traces to be calibrated Learn how in Multi Trace Configurations on page 43 2 DUT Connectors For each DUT port that is shown verify the correct type and gender of the DUT connector If a DUT port is not shown then that port is not included in the list of S parameters to be ca...

Page 110: ...e arrows or rotary knob select a Cal Type Then press Select and Finish Begin Calibration Press Start Calibration Follow the Cal Wizard prompts Connect the specified standard at the point where the DUT will be connected then press Measure At any time press Back to re measure a standard if you feel it was not properly connected Press Finish to complete the calibration CAL ON U is shown on the screen...

Page 111: ...VNA such as the PNA or ENA Learn more about User Characterization at the PNA Help website http na tm keysight com pna help latest S3_Cals ECal_User_Characteriza tion htm How to Perform a Calibration Using ECal Make measurement settings on the FieldFox frequency range number of points etc Connect the ECal module USB cable to the FieldFox USB Allow the module to warm up until it indicates READY This...

Page 112: ... and phase of a measurement using any Open Short or Thru component These may be calibration standards but because a Cal Kit is not selected they are not modeled Measurement accuracy is generally low Use a Simple Response Cal to make quick measurements when using a jumper cable to connect the DUT to the FieldFox Otherwise CalReady is usually more accurate When prompted choose a standard based on th...

Page 113: ...dard to the specified port and press Measure 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 Press Finish Connect the DUT CAL ON U is shown on the screen when a User Cal Ex Response Cal is correcting ONLY the appropriate measurement For example when an Open Response Cal on Port 2 is pe...

Page 114: ...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 104 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 115: ... which require sweeps in one direction only 1 Port OSL DUT Not Applicable S parameters Corrected S11 or S22 Standards OPEN SHORT LOAD Sweeps in ONE direction FULL 2 Port Requires Option 122 Most comprehensive calibration Corrects all S parameters DUT Non Insertable or Insertable Standards OPEN SHORT LOAD on BOTH ports Any THRU between ports For more information on the Unknown THRU process see the ...

Page 116: ... calibration with potentially better accuracy than Full 2 port Corrects all S parameters DUT Non Insertable or Insertable Standards Thru Reflect Line or variations of these A TRL Cal Kit MUST be selected to see this Cal Type Sweeps in BOTH directions Learn more about TRL Calibration in the Supplemental Online Help http na support keysight com fieldfox help SupHelp FieldFox htm 1 port Response Cals...

Page 117: ...it Isolation OFF Perform the Isolation step ON default Omits the Isolation step Then Back Configure and perform the calibration as usual At the first step of the Cal you will be prompted to connect a Load standard to one or both test ports This setting survives an Instrument Preset Waveguide Calibrations In general calibrating with Waveguide is very similar to calibrating with coax However most co...

Page 118: ...ments Press Measure 1 then select a DTF measurement Press Meas Setup 4 Then Settings Learn how to use the Quick Settings table in Quick Settings on page 45 Set Media Waveguide Frequency Mode BandPass is automatically selected for you Scroll down to Waveguide Definitions Select the Waveguide Standard being used If your waveguide standard is NOT listed Select User Waveguide Then press Done Then DTF ...

Page 119: ... Enh Response Then choose from NonReciprocal default An amplifier is a Non Reciprocal device because it has gain in the forward direction and very high loss isolation in the reverse direction This choice provides the best correction for non reciprocal devices and reasonable correction for reciprocal devices Reciprocal A reciprocal DUT is a device in which the insertion loss through the device is e...

Page 120: ... Mode Calibrations The FieldFox can have only ONE calibration present for all modes Because NA CAT and VVM modes are very similar a calibration that is performed in one mode can also be applied in the other modes with the same type of measurements 1 port or 2 port To apply a Cal that was performed in a different mode press Cal 5 then select Cal ON Save the Calibration After performing any type of ...

Page 121: ...nly one direction are required this choice provides faster trace measurements than a full 2 port cal Also choose an Enhanced Response Optimization Learn more in Enhanced Response Optimization on page 119 To find the best choice for your DUT Press Preset then Preset Select the appropriate S Parameter and other settings frequency range resolution and so forth Press Trace 6 then Math and Memory then ...

Page 122: ...Fox 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 were connected In NA Mode select a S11 Reflection with Polar or Smith Chart format Because all LOAD standards have delay you should see a small amount of phase rotation as a f...

Page 123: ... when good accuracy is required and when using a jumper cable or adapter QuickCal is NOT recommended when the DUT has 3 5 mm female or SMA female connectors 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 accur...

Page 124: ...124 Keysight N9923 90001 User s Guide Calibration for NA CAT and VVM Modes Calibration Method Summary ...

Page 125: ... displayed on the FieldFox screen In this Chapter Supported Power Sensors on page 127 How to Connect the Power Sensor on page 127 Average Peak on page 128 Zeroing on page 128 Frequency on page 129 Source Control on page 129 Relative and Offset Power Measurements on page 131 Display Units on page 131 Resolution on page 132 Averaging on page 132 Single or Continuous Measure on page 132 ...

Page 126: ...126 Keysight N9923 90001 User s Guide Power Meter USB Mode See Also Step Detection Mode on page 133 Limits on page 133 FOPS Settings on page 139 ...

Page 127: ...g is being performed Red light indicates an error has occurred with the power sensor Refer to power sensor documentation No light indicates the FieldFox is not communicating with the power sensor This is the case when in Hold mode or when NOT in Power Meter Mode The FieldFox does NOT support the following Keysight USB Power Sensor features External Triggering Time Gated Burst Power Measurement Pow...

Page 128: ...h 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 When power higher than ...

Page 129: ...z Then press a multiplier key Learn about multiplier abbreviations in Multiplier Abbreviations on page 34 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 separa...

Page 130: ...play Manually Press Scale Amptd Then choose from the following Scale Min Sets the low power level of the power meter display Type a number and select the units or press Enter This value is limited to 100 dBm Scale Max Sets the high power level of the power meter display Type a number and select the units or press Enter This value is limited to 100 dBm Autoscale Using Autoscale the current reading ...

Page 131: ... Measurements Press Scale Amptd Then choose from the following Relative Off On When switched to ON the FieldFox measures and stores the current power level Subsequent power measurements display a power level which is relative to the stored value When relative is ON the units change from dBm to dB or from Watts to Offset Off On Toggles ON and OFF the displayed power level using the Offset value Off...

Page 132: ... Man Off Auto Allows the USB Power Sensor to use its Auto Averaging settings See the USB Power Sensor documentation for details Man Manually enter an averaging count by setting Num Averages OFF Performs NO averaging Num Averages Sets the number of Power Meter readings to be averaged before a valid reading is displayed When the number is changed Averaging is automatically set to Man Single or Conti...

Page 133: ...p in the measured power For more information please refer to the USB Power Meter documentation How to set Step Detection mode Press Meas Setup 4 Then Step Detection OFF ON Then choose from the following ON 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 Readi...

Page 134: ...134 Keysight N9923 90001 User s Guide Power Meter USB Mode USB Power Meter Settings ...

Page 135: ...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 9 1 Display for FOPS In this Chapter How to select Power Meter USB Sensor on page 139 Measurement Selection on page 139 Sweep Type and Frequency on page 140 Power Sensor Settling on page 142 Sweep Settings on page 142 ...

Page 136: ...136 Keysight N9923 90001 User s Guide Frequency Offset Using Power Sensor FOPS Option 208 See Also Amplitude Markers on page 143 Trace Math on page 143 All about Trace Math on page 189 ...

Page 137: ...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 138: ...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 139: ...malization 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 1 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 that co...

Page 140: ...ing CW Used to make standard non offset power meter measurements at a single frequency Learn more in USB Power Meter Settings on page 128 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 Output connector The frequency limits are determined by the limit...

Page 141: ... 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 in reverse direction as compared to the source Invalid Settings Violations of ...

Page 142: ... 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 FOPS measurement How to make additional sweep settings Press Sweep 3 Then choose from the following Power Setup Source Enable ON Turn ...

Page 143: ... 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 relative to AmplMkr 1 When AmplMkr 1 is moved AmplMkr 2 also moves to maintain the AmplMkr 2 value between them OFF The two amplitude marker...

Page 144: ...144 Keysight N9923 90001 User s Guide Frequency Offset Using Power Sensor FOPS Option 208 FOPS Settings ...

Page 145: ...ring data from a train of pulses at the RF input This data is queried from the USB Power Sensor and displayed on the FieldFox screen You can then analyze the data using several selectable settings In this Chapter Supported Power Sensors on page 147 Measurement Selection on page 148 Frequency Time on page 148 Zoom Window on page 149 Scale on page 150 Averaging on page 150 Video Bandwidth on page 15...

Page 146: ...Accurate Radar Pulse Measurements http literature cdn keysight com litweb pdf 5991 0434EN pdf Triggering on page 152 Marker Settings on page 155 Amplitude Markers on page 155 How to Search with Markers on page 156 How to enable Auto Analysis on page 157 Pulse Top on page 158 Grid on page 158 Trace Memory on page 158 Many of the features included with the FieldFox Pulse Measurements Mode are discus...

Page 147: ...ed to the bottom USB port for Pulse Measurement Mode How to Connect the Power Sensor Connect your Power Sensor to one of the FieldFox USB ports A sequence of status lights are displayed on the base of the power sensor Green blinking light indicates the power sensor is communicating or self tests are being performed Because the FieldFox is usually communicating with the power sensor when it is conn...

Page 148: ...ay 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 149 When a Meter display measurement is selected the following Pulse Measurement Mode settings are identical to the s...

Page 149: ... 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 in Multiplier Abbreviations on page 34 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 p...

Page 150: ...itude of the trace on the screen Set Scale Reference Level 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 Values must be between 0 TOP line and 10 BOTTOM...

Page 151: ...dwidth 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 Then choose from the following Off Video Bandwidth is disabled Low Similar to a low pass filter ripple in the pass band is minimized bu...

Page 152: ... by the FieldFox and plotted across the X axis to form a trace More data points increases measurement resolution However more data points requires more time to acquire query and plot How to set Resolution Press Sweep 3 Then Resolution Then choose from the following Low 240 data points Medium 1000 data points High Calculated value approximately 8000 data points Triggering For pulse measurements a t...

Page 153: ...al initiates data acquisition Press Sweep 3 Then Trigger Then Trig Edge Then choose from the following Pos Acquisition is triggered by the rising positive edge of a valid signal Neg Acquisition is triggered by the falling negative edge of a valid signal Trigger Delay After a valid trigger signal is received at the USB Power Sensor data acquisition begins after the specified Trigger Delay time PLUS...

Page 154: ...F Manual Press Sweep 3 Then Trigger Then Trig Level Then set the trigger level using the numeric keypad the arrows or the rotary knob A line appears on Tr 1 at the 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 Trigger Settings Annotation Trigger settings are annotated on the ...

Page 155: ...tandard markers in All about Markers on page 174 Amplitude Markers Amplitude markers are horizontal dotted lines that you can move to any amplitude level on the screen The two amplitude markers can be set independently or used as a pair of delta markers Amplitude markers can be used as a visual comparison aid with the pulse measurement traces How to make Amplitude Marker settings Press Marker Then...

Page 156: ...n Zone Search Then choose from the following ON Available ONLY when the zoom window is enabled the search is limited to the zone defined by the zoom window OFF The search is performed over the entire Tr 1 trace Then choose from the following Target Peak and Minimum Learn more about these standard features beginning in Searching with Markers on page 179 Rise Time Select then set a value in dB Delta...

Page 157: ... 2 Peak Power Highest reading of all measured data points 3 Peak minus Average Difference between the above two results 4 Pulse Top Power value based on the specified Pulse Top setting 5 Rise Time The time it takes for a pulse to rise from 10 to 90 of its peak value 6 Fall Time The time it takes for a pulse to fall from 90 to 10 of its peak value 7 Pulse Width The time between the rising edge and ...

Page 158: ...hen set to 50 3 dB down from the 100 reference level is reported When set to 90 0 5 dB down from the 100 reference level is reported Grid Enables and disables the display of a 10 x 10 grid on the FieldFox screen How to enable Grid display Press Mrk Tools Then Grid OFF Grid OFF ON A grid of X Y lines appears on the screen Trace Memory A memory trace is a pulse measurement Tr 1 data trace NOT the tr...

Page 159: ...e 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 indicates that the memory trace has been stored 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 ...

Page 160: ...160 Keysight N9923 90001 User s Guide Pulse Measurements Mode Option 330 Pulse Measurement Settings ...

Page 161: ...surement displays the electrical length in both Magnitude and Phase Figure 11 1 Display for the 1 Port Cable Trimming measurement In this Chapter Overview on page 163 Measurement Selection on page 164 Frequency Selection on page 164 Display Resolution on page 164 IF Bandwidth on page 165 Output Power on page 165 Averaging on page 166 Single or Continuous Measure on page 166 VVM Calibration on page...

Page 162: ...ysight N9923 90001 User s Guide VVM Vector Voltmeter Mode Option 308 Procedures 1 Port Cable Trimming Measurements on page 169 2 Port Transmission Measurements on page 171 A B and B A Measurements on page 172 ...

Page 163: ...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 164: ...easurement in 2 Port Transmission Measurements on page 171 B A and A B 2 port ratioed receiver measurements using external sources Learn more in A B and B A Measurements on page 172 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 165: ...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 However for devices that are sensitive to high power levels such as amplifiers use the Low power setting For best measurement accuracy use t...

Page 166: ...verage count the greater the amount of noise reduction An average counter is shown in the left edge of the screen as Avg N This shows the number of previous readings that have been averaged together When the counter reaches the specified count then a running average of the last N readings is displayed Average count 1 means there is NO averaging This setting can be changed at any time without affec...

Page 167: ...f jumper cables or adapters that may be used to connect the DUT to the FieldFox Learn more about CalReady in CalReady on page 104 The next simplest method is to perform a Zeroing When using jumper cables or adapters to connect the DUT to the FieldFox the most accurate method is to perform a QuickCal or Mechanical Cal Learn more in Calibration Method Summary on page 123 Press Zero OFF before calibr...

Page 168: ...tings Press Zero OFF before performing a QuickCal or 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 169: ...urement S parameter is referred to as S11 If connecting the cables directly to the FieldFox test port CalReady is very accurate 5 To ensure that the calibration is adequate perform the following 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...

Page 170: ...s Meas Setup 4 then press Zero 8 Remove the reference cable from the FieldFox PORT 1 connector 9 Connect an unterminated longer cable to the FieldFox PORT 1 connector 10 Observe the displayed phase difference between the reference cable and the untrimmed cable 11 Carefully trim the cable until the phase shift reads zero The attached cable s electrical length is now matched to the reference cable 1...

Page 171: ... 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 167 Before performing a QuickCal or Mechanical Cal press Meas ...

Page 172: ...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 then Frequency Ref then ...

Page 173: ...176 Coupled Markers on page 176 Marker Trace on page 177 Marker Trace on page 177 Marker Format on page 178 What Is a Peak on page 182 Marker Functions on page 183 Marker Functions on page 183 How to Create Fixed Limit Lines on page 185 Relative Limit Lines on page 186 Relative Limit Lines on page 186 Build From Trace on page 187 Limit Options on page 187 How to Save and Recall Limits on page 188 ...

Page 174: ... used in CAT NA and Pulse Measurements Modes How to create Markers Press Marker Then Markers 1 6 to select a marker to activate 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 Then move the marker using the rotary knob the arrows or by entering an X axis position with the number keys Then press Enter How to move a Marker af...

Page 175: ...r A delta marker is created with a Δ delta symbol to distinguish it from the reference marker All six markers can be delta reference marker pairs Peak search functions can be performed using delta markers The delta marker moves to the peak the reference marker does NOT move Figure 12 2 A Delta marker and its associated reference marker In the graphic above the marker readout shows the difference b...

Page 176: ... for up to 6 markers in a full width window and up to 3 markers for a half width window NA mode The marker table squeezes the graticule area when activated How to display the Marker table Press Marker Then More Then Marker Table On Off Coupled Markers Coupled Markers available in NA mode only allows you to simultaneously create and move markers that have the same number for all traces For example ...

Page 177: ...s are the same color as the trace to which they are assigned I Marker colors can NOT be changed Marker Trace Both CAT and NA Modes can display a data trace and a memory trace By default markers are assigned to the data trace However you can move a marker between the data and memory trace The marker moves to the same X axis location on the specified trace When Coupled Markers is ON this setting app...

Page 178: ...t visible Mem Marker resides on memory trace even when not visible Marker Format The Marker Format setting available ONLY in NA Mode 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 sam...

Page 179: ...h criteria can include Target Bandwidth Peak Min The searches begin with the first sweep after Tracking is turned ON based on the current search type Trk appears next to the 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 value is ignored In SA Mode the LO feed thro...

Page 180: ... 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 BOTTOM MIN of the notch If you first enter Negative then Positive values it may be necessary to ...

Page 181: ...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 182: ...a peak by setting the Peak Threshold and Peak Excursion These two peak criteria settings are set individually for each trace and for each mode These settings do NOT survive a FieldFox or Mode Preset How to set Peak Criteria Press Mrk Tools In CAT and NA modes Then Peak Search Then Peak Criteria Then select the following Peak Threshold Minimum amplitude dB To be considered valid the peak must be ab...

Page 183: ...k Below 10 dB Threshold Setting Marker Functions Marker functions are used to change FieldFox frequency or distance settings to those of the active marker How to use Marker Functions Activate the marker to move Then press Mrk Tools Then Mkr Then choose one of the following Mrk Center Not available in DTF or SA mode with zero span The center frequency of the measurement becomes the value of the act...

Page 184: ... the measurement becomes the value of the active marker Markers that would no longer appear on the screen are moved to the new Start Distance Mkr Stop Distance The Stop Distance of the measurement becomes the value of the active marker Markers that would no longer appear on the screen are moved to the new Stop Distance ...

Page 185: ...rn more in How to Save and Recall Limits on page 188 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 187 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 NOT tested use separate limit lines The X...

Page 186: ...Relative Limit Lines Relative limit lines are X Y coordinates that are referenced to the center frequency X axis and Reference level 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...

Page 187: ... range do NOT change the limits However the limit line properties can be edited just like standard limit lines Figure 12 6 A lower limit line red built from the trace yellow shifted down 5 dB How to Build Limit Lines from a Trace Select the trace from which limits will be built Press Limit 8 Then Edit Limits Then Build From Trace A limit line table appears Use the arrows to select ON Use Offset to...

Page 188: ...y knob the arrows or by entering a value with the number keys Enter a positive margin to virtually shift the limit line UP Enter a negative margin to virtually shift the limit line DOWN How to Save and Recall Limits In addition to saving and recalling limits with an sta file limit lines can also be saved and then recalled independent of the current mode or measurement Use this feature to recall an...

Page 189: ... data trace 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 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 Data Mem is annotated in the left pane How to perform Trace Math Trace ...

Page 190: ...rmalization 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 such as the S11 match of two connector...

Page 191: ...dFox 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 192 Recall Files on page 195 Move Copy Files on page 195 Set File Type and Select Device on page 196 Manage Files on page 199 Manage Folders on page 200 Edit Keywords on page 201 Prefixes and Suffixes for Filenames on page 202 See Also Erase User Data on page...

Page 192: ...n error will result when trying to recall a state file that was saved on a different model family If you are having difficulty saving to a USB flash drive it may be a timing issue The turn around time for file open write data file close to a USB drive is much longer than to FieldFox s internal memory Alternative methods are 1 Save your content to the FieldFox s internal memory and then move your f...

Page 193: ...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 different keyword choices The preselected keywords File Site and so forth can be selected just like a single character T...

Page 194: ... 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 to save the file to the specified filename Press Cancel to close the labeler without saving a file If the filename already exists you are promp...

Page 195: ...fferences between the displayed traces Image Files The FieldFox can open and display png jpg and jpeg images How to Recall a sta File Press Save Recall 9 Then Recall 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 current files by date Optional Next Page if available to go to the next page of...

Page 196: ... a successful file copy 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 shutdown Select Device l...

Page 197: ...ata 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 CAT and NA Modes only the data trace is saved not the memory trace In Power Meter and VVM Mode NO data is saved Data S1P S2P Saves CAT and NA Mode trace data to an S1P or S2P file depending on th...

Page 198: ...nctions are included in saved SNP Data In NA Mode the data processing functions such as trace math that are included in the SNP data depends on a Preference setting Click System then Preferences then Preferences then scroll to NA SNP File Save then select from the following Default SNP data does NOT include smoothing SNP data saves are taken AFTER data processing location 2 on the processing chain...

Page 199: ... the file to Choose from Copy to Internal Copy to USB must be inserted or Copy to SD Card must be inserted Do Copy to complete the file copy to the media folder selected Delete Yes The selected file is deleted Cancel To cancel Delete and return to previous menu More Select Files Selects a file or files to sort copy or delete Select All selects all of the displayed files All files that are displaye...

Page 200: ...files Manage Folders You can create new folders delete old folders and select the active folder to which files can be saved The Parent folder is listed when not in the root directory How to Manage Folders Press Save Recall 9 Then More Then Manage Folders Then choose from the following Change Folder Changes the active folder to which files can be saved The active device and current folder is displa...

Page 201: ...e inserted or Copy to SD Card must be inserted Do Copy to complete the file copy to the media folder selected Rename The rename folder menu opens and the selected folder s title is displayed and available for editing Press Exit when finished Edit Keywords The preselected keywords FILE SITE and so forth can be edited to meet your specific needs Your keywords will remain in the FieldFox until you ch...

Page 202: ...The prefix and suffix Auto Append can be used together to organize files Once set and enabled they are automatically entered as the beginning Prefix and end Suffix using Auto Append of a filename when performing a Save operation These settings are persistent until disabled Refer to How to edit the Prefix and Suffix Auto Append on page 202 and How to enable disable Auto Append Suffix on page 204 Th...

Page 203: ...enu Auto Append Suffix OFF to turn off Auto Append Number to auto append a number using format _nnn sequentially to all saved files Date to auto append a date and time using format _YYYY MM DD HH MM SS sequentially to all saved files Number Suffix Reset to reset Auto Append number to _001 Prefix OFF to disable the prefix The Prefix softkeys are grayed out inactive Refer to How to enable disable th...

Page 204: ...s How to enable disable the Prefix persistent Press Save Recall 9 Then More Then Prefix Suffix Then Prefix OFF to disable the prefix on subsequently saved files Edit Prefix Auto Append and Number Suffix Reset softkeys are grayed out inactive How to enable disable Auto Append Suffix Press Save Recall 9 Then More Then Prefix Suffix Then Auto Append OFF to disable the Auto Append Suffix on subsequent...

Page 205: ...t softkey will appear ONLY when a compatible printer is connected Then press Save Recall 9 Then Print and choose from the following Printer Page Setup Confirm that the printer is connected and configured properly The Status line should read Ready Make other print settings as desired Select Files for Printing Print up to 16 PNG images on one page that are stored on the Internal drive Images can NOT...

Page 206: ...206 Keysight N9923 90001 User s Guide File Management Printing ...

Page 207: ...n page 212 Title on page 212 Edit Keywords on page 213 Full Screen Mode on page 213 Preferences on page 213 Quick Settings Table on page 213 Save and Reset Preferences on page 214 Global Settings Overview on page 215 Language on page 215 Battery Saver on page 216 Startup Mode on page 217 Display on page 217 File folders on page 220 Alpha Numeric Editing on page 220 File Saving Naming Options on pa...

Page 208: ...e Run Hold key determines whether the FieldFox sweeps continuously or does NOT sweep but holds the display results of the last sweep that was performed Use Hold to conserve battery power or to allow you to save or analyze the results of a specific measurement sweep The current sweep mode is shown on the screen as Continuous Hold is displayed while a single sweep occurs How to perform a single swee...

Page 209: ...a Peak on page 182 How to Preset the FieldFox Press Preset Then choose one of the following Preset Returns ALL Modes to the factory default settings Mode Preset Returns only the current Mode to the factory default settings The current settings for all other Modes remain User Preset User Preset allows you to store custom settings for each mode then recall the settings when the Preset key is pressed...

Page 210: ...ve and Reset Preferences on page 214 How to set FieldFox Volume Control Press System 7 Then Volume Then use the arrows the rotary 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 Only the instrument settings are saved to ...

Page 211: ...rn how in Save and Reset Preferences on page 214 Display Brightness Change the brightness of the background How to set Display Brightness Press System 7 Then Display Then Brightness Use the arrows the rotary knob or numeric keypad to enter a value between 0 and 100 Display Colors Change Display Colors to alter the viewing scheme How to set Display Colors Press System 7 Then Display Then Display Co...

Page 212: ...e of the following Normal Standard width Wide 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 view the Title area see the Screen Tour in Screen Tour on page 32 How to add or edit a Title Press System 7 Then Display Then Title Then enter or edit a title using the F...

Page 213: ...ences are settings that survive a shut down When your FieldFox is turned OFF then back ON these settings remain All preference settings can be restored to their factory defaults Learn how in Save and Reset Preferences on page 214 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 Sav...

Page 214: ...ings can be made at one time from the Quick Settings table All settings that can be saved as preferences except Battery Saver and Startup Mode can also be made from individual softkey selections throughout the FieldFox menu structure However they remain through a FieldFox shut down ONLY when the current settings are saved as preferences The table above shows a list of all of these settings and whe...

Page 215: ...ge Batter Saver and Startup Mode See also Quick Settings Table on page 213 How to select Global Settings Press System 7 Then Preferences Then Preferences Then use arrow softkeys or the knob to select Global Settings Then Edit for each of the following Language see Batter Save Mode see On Off default Startup Mode see Then Done Edit for each change in setting Language Choose the language in which to...

Page 216: ...ll to Global Settings Battery Saver ON To conserve battery power the RF source power is turned OFF at the end of each CAT NA and VVM mode sweep This behavior does not impact FieldFox measurements OFF Source power is kept ON at all times including during trigger Hold mode and between single sweep acquisitions The RF source stays at the stop frequency until another sweep begins This provides a const...

Page 217: ...dly press the Startup Mode to scroll through the available choices Default is the factory default mode for your FieldFox model Built in Power Meter Mode is NOT allowed as a Startup Mode Display Choose the Display values Display Colors Trace Width Brightness Title Enabled Title See Display Settings on page 211 How to select Display values Press System 7 Then Preferences Then Preferences Then use ar...

Page 218: ...Preferences Then use arrow softkeys or the knob to select Audio Then Edit for each of the following Mute On Off default Volume 0 to 100 default is 50 Then Done Edit for each change in setting Date and Time Choose the Date and Time values Date and Time Time Format Date Format and Time Zone See also Date and Time Format and Time Zone Settings on page 227 How to select CAT distance units Press System...

Page 219: ...GPS Choose the GPS values GPS State Elevation Unit GPS Sync Clock Display Lat Lon Format See also GPS on page 223 How to select CAT distance units Press System 7 Then Preferences Then Preferences Then use arrow softkeys or the knob to select GPS Then Edit for each of the following GPS State Off default Internal External Elevation Unit Meters default Feet Inches GPS Sync Lock Off default Internal E...

Page 220: ...Device displays the default device location Alpha Numeric Editing Keyboard Style Toggles through Qwerty ABC style keyboards that the Labeler displays Refer to How to use the FieldFox labeler on page 193 File Saving Naming Options Prefix Displays the current choice for Prefix Choices are User Last File default or Off Refer to Prefixes and Suffixes for Filenames on page 202 Auto Append Displays the ...

Page 221: ... Choose the CAT NA settings for SnP file save default factory error corrections extended cal default How to select CAT NA defaults Press System 7 Then Preferences Then Preferences Then use arrow softkeys or the knob to select CAT NA Then Edit for each of the following SnP File Save Default Advanced Default Factory Error Corr N995xA 6xA Only Enhanced Response Full 2 Port Extended Cal Default N995xA...

Page 222: ...How to Install Options A lic file must already be on a USB Flash Drive To learn how to obtain a lic file visit http www keysight com find softwarelicense Insert the USB Flash Drive in the FieldFox Press System 7 Then System Configuration Then Options Then Install Options The FieldFox reads validates then installs the options Press and hold the power button to shut down then restart the FieldFox Ho...

Page 223: ...le the GPS display on the FieldFox main window GPS 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 When External is selected a search is made for satellites overhead GPS works best when outdoors and in full view of the open sky When several satellites are found the following s...

Page 224: ... 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 225: ...GPS Then choose from the following Sync Clock ON OFF 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 every second to the time of the GPS clock OFF The FieldFox clock is NOT synched with GPS When set to OFF after Sync was ON the date and time does NOT revert back to the settings before...

Page 226: ...ce The External Reference setting will survive a Factory Preset or Mode Preset and is saved as part of the Instrument State When resuming after Standby the FieldFox will display an Unlock message while it acquires a lock to an external or GPS source How to use an External Reference Connect the 10 MHz External Reference to the EXT TRIG EXT REF BNC connector on the FieldFox top panel External Trigge...

Page 227: ... marker table Calibration properties All settings tables Limit line tables All saved png files Any of the following will re display frequency information Set to None Preset Mode Preset or FieldFox restart Date and Time Format and Time Zone Settings Set the local date and time Date and Time format and Time Zone that is shown on the FieldFox screen The Date and Time is also used to identify files th...

Page 228: ...figuration Then More Then Date and Time Press the arrows to highlight the row to be edited Then press Edit Use the arrows or rotary knob to select the field to be edited Use the arrows or numeric keypad to edit that field Press Cancel or Done when the edits are complete Because of licensing security the manual and GPS Sync methods to set Date and Time are restricted as follows Can be set backward ...

Page 229: ...eldfoxsupport How to configure LAN settings The first three Current settings can NOT be edited Press System 7 Then System Configuration Then More Then LAN Use the arrows to select one of the following then press Edit Hostname Change the name that can be used to address the FieldFox if your server supports this feature The default hostname is generated automatically Obtain IP Choose from DHCP IP Ad...

Page 230: ...ON When the FieldFox is without a power source this setting allows the FieldFox to power ON as soon as a charged battery or the DC Adapter is inserted without pressing the power button How to set Power ON Press System 7 Then System Configuration Then More Then Power ON Then choose from the following Auto The FieldFox will power ON when a charged battery or the DC Adapter is inserted Manual The Fie...

Page 231: ...owing then press Edit Hostname Change the name that can be used to address the FieldFox if your server supports this feature The default hostname is generated automatically Obtain IP Choose from Table 14 1 LAN LEDs Applies to N9912A units with serial number prefixes 5607 LAN LEDs Applies to N9912A units with serial number prefixes 5607 When FieldFox is connected to the LAN the flashing LAN LEDs ha...

Page 232: ...om Power Up The above settings take effect when the FieldFox is started Now The above settings take effect immediately Press Done Edit when finished Power ON When the FieldFox is without a power source this setting allows the FieldFox to power ON as soon as a charged battery or the DC Adapter is inserted without pressing the power button How to set Power ON Press System 7 Then System Configuration...

Page 233: ...to the firmware you want to install Press Start Install Current Step Progress bar and a Total Progress bar are displayed 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 234 From the initial Installer menu Pr...

Page 234: ...les to a USB or SD card this procedure restores those files From the initial Installer menu Press Utility Then Cancel to exit without restoring your files and returning to the initial Installer menu 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 ei...

Page 235: ...ration 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 Instrument Calibration on page 265 Event Log The Event Log shows the information that has appeared on the FieldFox scre...

Page 236: ...s folder and files are NOT erased because they are part of the file system housekeeping How to Erase User Data Press System 7 Then Service Diagnostics Then Advanced Then Erase User Data Then Confirm Erase Then the following occurs All data files and folders are deleted from the UserData partition A large file of 0s is written to all of the free blocks on the partition The large file is deleted All...

Page 237: ...queries Connect a mini USB FieldFox device side to standard USB host PC On 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 ...

Page 238: ...001 User s Guide Using the Mini USB Port to send SCPI Commands and Queries Applies to N9912A units with serial number prefixes 5607 Only Mini USB Connection to PC with IO Libraries Figure 15 1 Keysight Interactive IO Window ...

Page 239: ...ge Learn more in the following section Viewing the Battery Charge Status on page 239 Charging the Battery on page 241 Reconditioning Battery on page 244 Battery Care on page 244 Maximizing Battery Life on page 244 Lithium Ion Battery Disposal on page 245 Install the Lithium Ion Battery on page 22 To conserve battery power on page 23 For the Battery on page 251 Table 16 1 Front Panel Icons Icon Sta...

Page 240: ...ery 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 has an LED gauge that dis...

Page 241: ...charged 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 However this could impair the accuracy of its internal charge remaining indicator When the Max Error is greater than 10 the battery should be reconditioned...

Page 242: ...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 243: ...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 251 External Battery Charger LED Charging Status Green Fully charged Green flashing...

Page 244: ...h as swelling cracking of the battery shell or leakage of fluid If degradation occurs replace the battery and dispose of it properly Refer to Lithium Ion Battery Disposal on page 245 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 t...

Page 245: ...ly below 0 C 32 F Lithium 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 countr...

Page 246: ...246 Keysight N9923 90001 User s Guide Working with the Lithium Ion Battery Lithium Ion Battery Disposal ...

Page 247: ...ents for Electrical Equipment for Measurement 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 ...

Page 248: ...intained 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 the instrument before connecting the instrument Maximum Input Voltages and Power RF Output Connector 50V DC 23 dBm RF Ext Trig Ref ...

Page 249: ... Guide 249 Safety Considerations For the FieldFox The measuring terminals on this instrument are designed to be used with external signals described in Measurement Category I but NOT with external signals described in Categories ...

Page 250: ... cloth or one slightly dampened with water to clean the external case parts Do not attempt to clean internally When the FieldFox is connected to the AC DC adapter position the adapter so the power cord is readily accessible The power cord is the disconnecting device It removes main power to the AC DC adapter The FieldFox front panel switch is only for the DC power within the instrument and not for...

Page 251: ...he SMBus to the charger to control the charge rate and voltage Never use a modified or damaged charger External AC DC power supply U S FCC compliance Meets the required verification equipment authorization rules This device complies with part 15 of the FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 this device must accept any i...

Page 252: ...y cause the battery to generate heat explode or ignite Using the battery in this manner may also result in a loss of performance and a shortened life expectancy There is a danger of explosion if the battery is incorrectly replaced Replace only with the same or equivalent type of battery recommended Discard used batteries according to manufacturer s instructions If you are charging the batteries in...

Page 253: ...imately 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 5A for a time period of 120 seconds or more Secondary Overcharge Current This prevents the battery from being charged if the charging current reaches or exceeds 4A 20 for a time period of 20 milliseconds or more Prim...

Page 254: ...h temperatures This protection is resettable once the overstress condition is removed The maximum operating temperature of this fuse is 85C 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 temperatures Tertiary Overtemperature A current interrupt device CID within each Li ion cell will permanently open up whe...

Page 255: ... 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 circui...

Page 256: ...y symbol is used to mark a position of the instrument power line switch This symbol indicates separate collection for electrical and electronic equipment mandated under EU law as of August 13 2005 All electric and electronic equipment are required to be separated from normal waste for disposal Reference WEEE Directive 2002 96 EC Indicates the time period which no hazardous or toxic substance eleme...

Page 257: ... a year it signifies when the design was proven The battery parts can be recycled Consult local or country regulations 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 excessive heat Do not dispose of by burning UL recognized in Canada and the United State...

Page 258: ...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 Mexico indicates that the product was tested by an accredited laboratory in Mexico and meets Mexico s safety requirements Japan s safety and EMC compliance mark China s safety and EMC...

Page 259: ...n facilities of other International Standards Organization members Manufacturer s Declaration This product has been designed and tested in accordance with accepted industry standards and has been supplied in a safe condition The documentation contains information and warnings that must be followed by the user to ensure safe operation and to maintain the product in a safe condition Declaration of C...

Page 260: ...S CISPR 11 ICES NMB 001 This ISM device complies with the Canadian ICES 001 Cet appareil ISM est conforme a la norme NMB 001 du Canada Safety Complies with the European Low Voltage Directive IEC EN 61010 1 Canada CSA C22 2 No 61010 1 U S A UL std no 61010 1 South Korean Class B EMC Declaration This equipment is Class B suitable for home electromagnetic environment and is suitable for use in all ar...

Page 261: ...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 262: ...ng Connectors Do Do Not Clean and zero the gage before use Use the correct gage type Use correct end of calibration block Gage all connectors before first use Use an out of specification connector Gaging Connectors Do Do Not Align connectors carefully Make preliminary connection contact lightly Turn only the connector nut Use a torque wrench for final connection Apply bending force to connection O...

Page 263: ...3A Handheld Analyzer User s Guide B Specifications Data Sheet To ensure the highest accuracy and consistency the FieldFox Specifications are now stored ONLY at http literature cdn keysight com litweb pdf 5990 9783EN pdf ...

Page 264: ...264 Keysight N9923 90001 User s Guide Specifications Data Sheet ...

Page 265: ...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 266: ...ted 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 calibratio...

Page 267: ...267 Keysight N9923A Handheld Analyzer User s Guide D Korean Battery Safety Translation ...

Page 268: ...268 Keysight N9923 90001 User s Guide Korean Battery Safety Translation ...

Page 269: ...Keysight N9923 90001 User s Guide 269 Korean Battery Safety Translation ...

Page 270: ...270 Keysight N9923 90001 User s Guide Korean Battery Safety Translation ...

Page 271: ...VVM mode 171 brightness display 211 C Cable Correction Specifications DTF 94 cable and antenna test See CAT cable loss measurements 86 87 cable specifications DTF 95 Cal On 120 Calculated DTF values 98 calibration Cal On 120 CAT and NA modes 101 type 114 verifying integrity 122 Calibration Type 114 CalReady 104 properties 120 CalReady Properties 120 care of the battery 244 CAT mode 1 port cable lo...

Page 272: ...tting 79 Frequency Offset Using Power Sensor 135 Frequency Range NA Mode 47 front panel 27 Full Screen Mode 213 G Gating 72 gating 72 gauge battery 240 getting started information 21 GPS 219 223 group delay 47 H high temperature protection 24 hold 208 how to change units to feet 98 create delta marker 176 markers 174 edit keywords 201 edit enable and disable the current prefix 204 enter numeric va...

Page 273: ...ridge cancellation VVM mode 171 return loss 86 selection 77 mini USB port sending SCPI commands 237 Mixed Mode S Parameters 40 mixed mode S parameters 40 mode NA 37 SA 125 135 temperature control 25 VVM 161 move cursor 194 202 203 reference marker 176 moving the cursor 194 202 203 204 multiplier abbreviations 34 multipliers 34 Multi Trace Configurations 43 multi trace configurations 43 N NA Factor...

Page 274: ...nalyzer mode 125 135 stand by mode 23 Startup Mode 217 static charge dissipate 26 Step Detection Mode 133 suffixes for file names 202 sweep time 82 time NA mode 53 type 52 81 Sweep Time NA Mode 53 system configuration settings 222 System Impedance Z0 54 System Settings 207 systematic 103 T temperature control mode 25 Time Domain 61 Time Zone 218 227 time zone 218 time date setting 218 title editin...

Page 275: ...Installation Note Xxxxx xxxxx 3 ...

Page 276: ...This information is subject to change without notice Keysight Technologies 2015 2016 Edition 3 August 2016 www keysight com ...

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