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Keysight N9038A, Service Manual

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 552                                                                                                                     Keysight N9038A MXE Service Guide

Assembly Replacement Procedures
RF Area - Option 503, 508, & 526

3.

Refer to 

Figure 18-20

. Replace cables W27, W30, and W31.Torque to 

10 inch-lbs.

Figure 18-20 

W27, W30, and W31 Cables Replacement - Option 503, 508, & 526

Summary of Contents for N9038A

Page 1: ...eysight N9038A MXE EMI Receiver Notice This document contains references to Agilent Please note that Agilent s Test and Measurement business has become Keysight Technologies For more information go to www keysight com ...

Page 2: ...rily provided to the public Accordingly Keysight provides the Software to 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 sw eulaThe license set forth in the EULA represents the exclusive authority by which the U S government may use modify distribute or disclose the S...

Page 3: ...tes 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 techsupport Lithium Battery Disposal The MXE EMI Receiver uses an internal 3 0 VDC battery that contains Lithium Manganese Dioxide Li MnO2 The battery is located on the A4 CPU assembly to power the instrument clock ...

Page 4: ...4 ...

Page 5: ...oller Troubleshooting Kit 30 Type M Troubleshooting Cable 30 After an Instrument Repair 31 Contacting Keysight Technologies 31 Instrument Serial Numbers 34 How to Return Your Instrument for Service 35 Service Order Number 35 Original Packaging 35 Other Packaging 36 2 Boot Up and Initialization What You Will Find in This Chapter 37 Check the Basics 38 MXE Instrument Boot Up Process 39 Typical instr...

Page 6: ...108 Condition errors 1 to 99 Calibration 108 Condition Errors 101 to 199 Measurement Integrity 113 Condition Errors 201 to 299 Signal Integrity 116 Condition Errors 301 to 399 Uncalibrated Integrity 120 Condition Errors 401 to 499 Power 124 Condition Errors 501 to 599 Frequency 125 Condition Errors 601 to 699 Error Summaries 126 Condition Errors 701 to 799 Operation 127 Condition Errors 801 to 899...

Page 7: ...52 7 L O Synthesizer What You Will Find in This Chapter 261 A14 L O Synthesizer Assembly Description 262 A14 L O Synthesizer Purpose 262 A14 L O Synthesizer Description 262 A14 L O Synthesizer Assembly Connections 263 A14 L O Synthesizer Assembly Troubleshooting 264 Assembly Initialization 264 Assembly Status LEDs 265 Frequency and Amplitude of the 1st LO Output 266 8 Front End Control What You Wi...

Page 8: ...rence 100 MHz 315 3rd LO 316 4 8 GHz Calibrator 317 1st LO Reference 318 2nd LO Low Band 319 Wideband IF Reference 320 10 Analog Digital IF What You Will Find in This Chapter 321 A2 Analog I F Assembly Description 322 A2 Analog IF Assembly Purpose 322 A2 Analog IF Assembly Description 322 Overall A2 Analog IF Assembly Resolution Bandwidth 324 A2 Analog IF Assembly Connections 325 A2 Analog I F Tro...

Page 9: ...Slot 358 A4 Processor Board Assembly Troubleshooting 359 Boot Up or Initialization Problems 359 BIOS Settings 359 A5 Disk Drive 360 Overview 361 Troubleshooting software related issues 362 Reloading the Instrument Application Software 363 Disk Drive Recovery Process 364 Instrument Image Recovery System 364 Using the Instrument Recovery System 365 Replacing the instrument disk drive 366 12 Power Su...

Page 10: ... A25 Wideband Analog IF Assembly Troubleshooting 387 Assembly Initialization 387 Overall Wideband Signal Path Verification 388 2400 MHz Reference Input Verification 389 Input Signal Level Verification 390 Input Switching Verification 391 A26 Wideband Digital IF Assembly Description 393 A26 Wideband Digital IF Assembly Purpose 393 A26 Wideband Digital IF Assembly Description 393 A26 Wideband Digita...

Page 11: ... Lock Functions 463 LO Control 464 Align 464 Diagnostics 467 RF Preselector 467 AUX I O Control 473 Diagnostics Key Description 474 17 Replaceable Parts What You Will Find in This Chapter 475 How to Order Parts 476 Replaceable Parts 477 Hardware 495 18 Assembly Replacement Procedures What You Will Find in This Chapter 527 Before Starting 529 Safety 529 Tools you will need 530 Adjustments Tests aft...

Page 12: ...placement 574 Front End Control Assembly 575 Removal 575 Replacement 576 LO Synthesizer Assembly 577 Removal 577 Replacement 578 Radiated Filter Assembly 579 Removal 579 Replacement 580 RF Preselector Input Assembly 581 Removal 581 Replacement 581 Conducted Filter Assembly 582 Removal 582 Replacement 582 LISN Control Assembly 583 Removal 583 Replacement 584 Wideband Analog IF and Wideband Digital ...

Page 13: ...y 622 Removal 622 Replacement 624 Front Frame Assembly Components LED 625 Front Frame Assembly Components CCFL Backlight 633 Input 2 LED Board 642 19 Post Repair Procedures What You Will Find in This Chapter 643 Before Starting 643 Post Repair Procedures 644 Calibration Data Backup and Restore 647 20 Instrument Software What You Will Find in This Chapter 659 Instrument Software Overview 660 Softwa...

Page 14: ...amp On 696 Procedure 697 Scale Fidelity 702 Procedure 703 CISPR Resolution Bandwidth Shape Accuracy 705 Procedure 706 Quasi Peak Detector Accuracy 709 Sine Wave Generator Characterization 710 Initial Setup 711 Band A Testing 711 Band B Testing 713 Band C Testing 716 Band D Testing 719 Peak Detector Accuracy 723 Sine Wave Generator Characterization 724 Initial Setup 725 Band A Testing 725 Band B Te...

Page 15: ...l Setup 746 Band A Testing 746 Band B Testing 748 Band C Testing 750 Band D Testing 753 Intermittent Unsteady Drifting Disturbances 755 Initial Setup 756 EMI Average Detector Testing 756 RMS Average Detector Testing 758 ...

Page 16: ...16 Contents ...

Page 17: ...tion on your spectrum analyzer The following sections are found in this chapter Keysight MXE EMI Receiver Overview on page 20 Instrument Option Descriptions on page 21 Before You Start Troubleshooting on page 23 ESD Information on page 26 Service Equipment You Will Need on page 28 Contacting Keysight Technologies on page 31 How to Return Your Instrument for Service on page 35 ...

Page 18: ...s Bandwidth Miscellaneous minor updates Print Date February 2015 Rebrand to Keysight Miscellaneous minor updates and formatting changes Print Date December 2014 Added support for Option 503 20 Hz to 3 6 GHz Frequency Range Incorporate updates from previous revision Print Date April 2014 Added support for PC4 processor assembly Updated functional tests to include EMI detectors Miscellaneous minor u...

Page 19: ...ed Analog IF Assembly New A3 High Performance Digital IF Assembly New A15 Enhanced Front End Control Assembly Added support for Option CR3 Wideband IF Output Added support for Option LSN External LISN Control Added support for LED backlit display Incorporate updates for previous revision Miscellaneous minor updates N9038 90001 Print Date May 2011 Initial revision ...

Page 20: ...enable the receiver to be configured as a comprehensive analytical tool to test communications systems and components If customer requirements should change or expand post sale upgrades can be purchased at any time Most measurement application upgrades require a license key which is obtained using the Keysight Software Licensing service If the email delivery option is ordered the entitlement certi...

Page 21: ...on Description Notes 503 20 Hz to 3 6 GHz Frequency Range 508 20 Hz to 8 4 GHz Frequency Range 526 20 Hz to 26 5 GHz Frequency Range 544 20 Hz to 44 GHz Frequency Range B25 25 MHz Analysis Bandwidth B85 85 MHz Analysis Bandwidth C35 3 5 mm RF Input CNFa Type N Female RF input Not Licensed CR3 Wideband IF Output Included on all unitsb DP2 High Performance Digital Signal Processing Included on all u...

Page 22: ... Included with Option 526 P44 Preamp 100 kHz to 44 GHz Included with Option 544 RT1 Real Time Spectrum Analysis TDS Time Domain Spectrum YAS Y Axis Screen Video rear panel Analog Out connector a Does not appear in option listing of instrument b Standard as of Serial Prefix MY SG5322 Option Description Notes ...

Page 23: ... yourself with the safety symbols marked on the instrument and read the general safety considerations in the front of this guide Read the general safety considerations below Read the ESD information below Familiarize yourself with the troubleshooting information in Chapter 2 Boot Up and Initialization and how it relates to information on troubleshooting the other assemblies ...

Page 24: ... to do so This is a Safety Class 1 Product provided with a protective earthing ground incorporated in the power cord The mains plug shall only be inserted in a socket outlet provided with a protected earth contact Any interruption of the protective conductor inside or outside of the product is likely to make the product dangerous Intentional interruption is prohibited The power cord is connected t...

Page 25: ...ss to the disconnecting device detachable power cord Always use the three prong ac power cord supplied with this product Failure to ensure adequate earth grounding by not using this cord may cause product damage This instrument has an autoranging line voltage input be sure the supply voltage is within the specified range ...

Page 26: ...uctive table mat and wrist strap combination Conductive floor mat and heel strap combination Both types when used together provide a significant level of ESD protection Of the two only the table mat and wrist strap combination provides adequate ESD protection when used alone To ensure user safety the static safe accessories must provide at least 1 megohm of isolation from ground Figure 1 1 Example...

Page 27: ...zer connector momentarily short the center and outer conductors of the cable together Personnel should be grounded with a 1 megohm resistor isolated wrist strap before touching the center pin of any connector and before removing any assembly from the analyzer Be sure that all analyzers are properly earth grounded to prevent build up of static charge For Additional Information about ESD For more in...

Page 28: ...g Calibration Application Software Front End Controller Troubleshooting Kit USB Keyboard and Mouse USB Storage Device Test Equipment Tools you will need Figure 1 2 TORX Tool Hand Tool Size Cable Puller 5021 6773 Nut Driver 3 16 inch Nut Driver 5 16 inch Nut Driver 9 16 inch Open End Wrench 5 16 inch Torque Driver Adjustable Multi Bit Torque Wrench 10 inch lbs 5 16 inch TORX Driver T 6 TORX Driver ...

Page 29: ...Overview Service Equipment You Will Need Calibration Application Software Information regarding the Keysight MXE EMI Receiver Calibration Application Software can be found at the following web site www keysight com find calibrationsoftware ...

Page 30: ...ubleshooting Cable In order to directly measure the output of the A22 Radiated Filter board or inject a signal into the input of the A21 RF Presel Input board a special Type M connector is needed A short Type M male to BNC male cable has been created for this purpose It is recommended that two of these be available for troubleshooting the instrument The part number of this cable is N9039 60034 Key...

Page 31: ...echnologies If you have a problem with your instrument see Chapter 2 Boot Up and Initialization This section contains a checklist that will help identify some of the most common problems There is also support on the world wide web The address is http www keysight com find mxe_support FAQs instrument software updates documentation and other support information can be accessed from this site To obta...

Page 32: ...es 1 800 829 4444 Asia Pacific Country Phone Number Australia 1 800 629 485 China 800 810 0189 Hong Kong 800 938 693 India 1 800 112 929 Japan 0120 421 345 Korea 080 769 0800 Malaysia 1 800 888 848 Singapore 1 800 375 8100 Taiwan 0800 047 866 Other AP Countries 65 6375 8100 Europe and Middle Country Phone Number Austria 0800 001122 Belgium 0800 58580 Finland 0800 523252 France 0805 980333 Germany ...

Page 33: ...xembourg 32 800 58580 Netherlands 0800 0233200 Russia 8800 5009286 Spain 0800 000154 Sweden 0200 882255 Switzerland 0800 805353 Opt 1 DE Opt 2 FR Opt 3 IT United Kingdom 0800 0260637 For other unlisted countries www keysight com find contactus Europe and Middle Country Phone Number ...

Page 34: ...econd provides the instrument s serial number The serial number has two parts the prefix two letters and the first four numbers and the suffix the last four numbers Refer to the following figure Figure 1 3 Example Serial Number The first two letters of the prefix identify the country in which the unit was manufactured The remaining four numbers of the prefix identify the date of the last major des...

Page 35: ...reen in spans 10 MHz Analyzer will not complete boot up sequence to signal analyzer mode Failure descriptions that will most likely increase repair time Analyzer broken Analyzer will not make accurate measurements Signal drifts If you have recorded any error messages that appeared on the analyzer display or have completed a Functional Test or Performance Verification Test or have any other specifi...

Page 36: ...g in the carton If packing foam is not available the best alternative is S D 240 Air Cap from Sealed Air Corporation Hayward California 94545 Air Cap looks like a plastic sheet filled with 1 1 4 inch air bubbles Use the pink colored Air Cap to reduce static electricity Wrapping the equipment several times in this material should both protect the equipment and prevent it from moving in the carton 5...

Page 37: ...ics on page 38 MXE Instrument Boot Up Process on page 39 Typical instrument boot up process flow on page 40 Potential Problems During Boot Process on page 43 Yellow Standby LED Does Not Illuminate on page 43 Green Power On LED Does Not Illuminate on page 45 Fan s Are Not Operating on page 49 No Keysight Splash Screen Displayed on page 52 Instrument Hangs at the Keysight Splash Screen on page 53 In...

Page 38: ... Preset key 6 Is the measurement being performed and the results that are expected within the specifications and capabilities of the instrument Refer to the Specifications Guide for specifications 7 In order to meet specifications the instrument must be aligned Press System Alignments Align Now All The diagnostic tests should all pass If the instrument displays a failure during these tests refer t...

Page 39: ...ed If this is done the preload process will be bypassed during the application boot up If a certain measurement mode is selected that did not preload during the original boot that measurement application will preload at that time When this occurs the mode switching time will take longer Once the application is loaded all subsequent mode switches will be much faster If the user does not want the me...

Page 40: ... Not Illuminate section in this chapter 3 To turn the analyzer on press the On Off button The yellow Standby LED should turn off and the green Power On LED should illuminate A green Power On LED indicates that the power supply has received an On command from the A4 CPU assembly If the green Power On LED is not illuminating refer to the Green Power On LED Does Not Illuminate section in this chapter...

Page 41: ... few seconds refer to the Instrument Cannot Completely Load or Run the Operating System section in this chapter 7 If the recovery system is not selected the Windows operating system will begin to boot up This will take 20 30 seconds 8 The Keysight Technologies logo is displayed in white font on a blue background while Windows finishes loading user preferences This can take up to 4 minutes If this ...

Page 42: ...ok for any failed status for the various internal hardware items listed in this file Once the MXE application is fully initialized and aligned the display should resemble Figure 2 2 when delivered from the factory This completes the boot process from initial AC power to the spectrum analyzer application IMPORTANT If the power up state has been changed from the factory power on state by the user th...

Page 43: ... When the Standby LED does not come on it could be due to any one of these assemblies This procedure will help to determine which one is the cause If the instrument turns on and operates properly but the yellow Standby LED does not work then all that will need to be done is to trace where the control signal for the LED is being lost using the routing information in the preceding paragraph 1 The St...

Page 44: ... LED back to the A4 Processor board are not at fault replace the A4 Processor board If not Replace the A6 Power Supply assembly Most DC power supplies come from the A6 Power Supply assembly However the most convenient measurement location for all the DC supplies is the A7 Midplane All power supply LED s are accessible once the instrument cover has been removed Before replacing the power supply ver...

Page 45: ...e is to trace where the control signal for the LED is being lost using the routing information in the preceding paragraph 1 The Power On LED will only turn on when the instrument is connected to an AC power source that has a voltage level and frequency of that specified for the instrument and the front panel On Off button has been pressed Before proceeding verify that these requirements are being ...

Page 46: ... Proceed to step 6 If not Verify the connection between the front panel On Off switch and the A4 Processor assembly by checking the status of the POWER_SW_L control line when the front panel On Off button is both pressed and released This can be monitored by measuring the voltage at Test Point 520 as shown in Figure 2 5 With the On Off button released this should measure a TTL high level and with ...

Page 47: ...e A7 Midplane board go off when the power is turned on If yes Replace the A4 Processor board If not Proceed to step 7 7 To verify that the A6 Power Supply is not in an over current condition check the status of the FAULT_L status line by measuring the voltage level at Test Point 508 or viewing the FAULT_L LED as shown in Figure 2 6 Table 2 1 Test Point 520 Verification Front Panel Switch Most Prob...

Page 48: ...oint 508 at a TTL low level If not Replace the A6 Power Supply assembly If yes Remove different assemblies from the instrument one at a time to see if one of them can be identified as overloading the A6 Power Supply assembly If when a particular assembly is removed the power supplies will now come on replace that assembly If no assembly can be found that is causing the overcurrent condition replac...

Page 49: ...front panel does turn on when the instrument is turned on If it doesn t refer to the Green Power On LED Does Not Illuminate section before proceeding 1 The instrument fans will only turn on when the instrument is connected to an AC power source that has a voltage level and frequency of that specified for the instrument and the front panel On Off button has been pressed Before proceeding verify tha...

Page 50: ...off If yes Measure the voltage level at Test Point 522 on the A7 Midplane board Is the Test Point 522 voltage between 7 and 15 VDC If yes Proceed to step 6 If not Replace the A6 Power Supply assembly If not Replace the A6 Power Supply assembly Figure 2 7 A7 Midplane Board Fan_P Failure LED Test Point 522 Before replacing the power supply verify the midplane and motherboard interconnects are mechan...

Page 51: ...three of the fan connectors J6 J7 J8 on the A8 Motherboard Each connector has three pins The outer conductors on all connectors are the FAN_P supply and the center conductors are FAN_N The voltage between FAN_P and chassis ground should be between 7 and 15 VDC on all three connectors Does the A8 Motherboard fan connector for the fan s that do not work have the required voltage level If yes Replace...

Page 52: ... on page 527 in this manual 2 Remove the Top Brace Refer to Chapter 18 Assembly Replacement Procedures on page 527 in this manual 3 With the AC power applied and the On Off button turned on verify that all of the power supply voltages are at their proper level This can easily be done by viewing the power supply LEDs on the back side of the A7 Midplane board Refer to the Chapter 12 Power Supply Mid...

Page 53: ...r 18 Assembly Replacement Procedures on page 527 in this manual 3 With the AC power applied and the On Off button turned on verify that all of the power supply voltages are at their proper level This can easily be done by viewing the power supply LEDs on the back side of the A7 Midplane board See the Chapter 12 Power Supply Midplane on page 367 Are all of the power supply voltages at the proper le...

Page 54: ...ystem If yes Run the Instrument Image Recovery System by referring to the Disk Drive Recovery Process on page 364 If this does not correct the problem replace the A5 Disk Drive If not Replace the A5 Disk Drive Troubleshooting a Blank Display This section is intended to troubleshoot a display system problem that would cause the internal LCD to be blank It is assumed that the rest of the instrument ...

Page 55: ... the Top Brace Refer to Chapter 18 Assembly Replacement Procedures on page 527 in this manual 3 Turn the instrument on and allow enough time for it to completely boot up 4 Shine a bright light at the display and look closely for the expected information a large flashlight should work Since most of the display section of the screen has a black background you will need to look at either the area nex...

Page 56: ...t panel assembly away from the instrument remove W6 from the A23 Limiter assembly as shown in Figure 4 16 9 Remove the A1MP19 Front Panel Interface Shield as shown in Figure 18 73 10 Carefully lay the front panel assembly face down on the work surface 11 Referring to Figure 2 9 verify the 3 voltage levels listed in Table 2 2 are correct The instrument does have a screen saver which can disable the...

Page 57: ...klight Control Voltages 12 Are all of the 3 voltage levels within their expected ranges If yes Replace the A1A4 Display Backlight Power Supply If not Replace the A1A2 Front Panel Interface board Table 2 2 Expected Backlight Inverter Control Voltage Levels Signal Expected Voltage Brightness Control 0 to 3 VDC Backlight Enable 6 VDC Backlight Supply 12 VDC ...

Page 58: ...e to A1A3 LCD via A1W1 flex circuit If all of these connections are properly made and none of the cables are damaged proceed to Video Controller LCD Troubleshooting Video Controller LCD Troubleshooting The video controller is located on the A4 Processor assembly The video signals that the controller outputs are LVDS As described above these signals are routed to the LCD via the A7 Midplane Board A...

Page 59: ... Troubleshooting Alignment Failures Using the Alignment History Screen At instrument power on an initial alignment is automatically performed It is also possible to manually trigger an alignment by pressing System Alignments Align Now All The power on alignment performs a few more alignments than the manual Align Now All routine The number of alignments depends on the hardware options present in t...

Page 60: ... A16 Reference SecondLOLoopBandwidth A16 Reference DitherLevelAlgorithm A3 Digital IF AifLCWidePrefilterPassbandTuningAlgorithm A2 Analog IF AifLCWidePrefilterPassbandFineTuningAlgorithm A2 Analog IF AifLCNarrowPrefilterPassbandTuningAlgorithm A2 Analog IF AifLCNarrowPrefilterPassbandFineTuningAlgorithm A2 Analog IF AifXtalWidePrefilterPassbandTuningAlgorithm A2 Analog IF AifXtalNarrowPrefilterPas...

Page 61: ... MHz IF from A15 Front End Control J7901 DIF40StepCalAlignmentAlgorithm A15 Front End Control Uses Wideband 322 5 MHz IF from A15 Front End Control J7901 Aif140StepCalAdjustmentAlignmentAlgorithm A25 Wideband Analog IF RFPreselMechanicalAttenuatorAlgorithm A21 RF Presel Input A16 Reference provides 50 MHz Calibrator signal Aif140StepCalAlignmentAlgorithm A25 Wideband Analog IF ECalPathSystemGainAl...

Page 62: ...SystemGainAlgorithm A21 RF Presel Input BurstCarrierTriggerCurveFitAlignmentAlgorithm A2 Analog IF DIF25PulseStretcherAlignmentAlgorithm A3 Digital IF DIF40PulseStretcherAlignmentAlgorithm A3 Digital IF ConductedPreampAmplitudeAlgorithm A21 RF Presel Input ConductedAmplitudeAlgorithm A24 Conducted Filter RadiatedPreampAmplitudeAlgorithm A21 RF Presel Input RadiatedAmplitudeAlgorithm A22 Radiated F...

Page 63: ...uencies an external signal generator will also be needed 1 Switch the instrument into the Spectrum Analyzer mode by pressing Mode Spectrum Analyzer 2 Turn on the internal 50 MHz Calibrator signal by pressing Input Output RF Calibrator 50 MHz 3 Tune the instrument to 50 MHz with a span of 10 MHz by pressing Freq 50 MHz Span 10 MHz 4 Place the marker on the peak of the calibrator signal by pressing ...

Page 64: ...ified with the use of the internal 4 8 GHz calibrator signal However if there are suspected problems at other frequencies an external signal generator will also be needed 1 Switch the instrument into the Spectrum Analyzer mode by pressing Mode Spectrum Analyzer 2 Turn on the internal 4 8 GHz Calibrator signal by pressing Input Output RF Calibrator 4 8 GHz 3 Tune the instrument to 4 8 GHz with a sp...

Page 65: ... that the on screen of the 4 8 GHz Calibrator signal is 28 dBm 2 dB as shown in Figure 2 11 Figure 2 11 4 8 GHz Calibrator Signal 7 If the signal level is not correct refer to Chapter 5 RF Preselector Section Chapter 6 RF Downconverter Section and Chapter 15 Block Diagrams for further troubleshooting information ...

Page 66: ...66 Keysight N9038A MXE Service Guide Boot Up and Initialization Potential Problems During Boot Process ...

Page 67: ...ng to their severity into Error Warning or Advisory categories The sub divisions are described in more detail in the section Event and Condition Categories on page 68 Event messages appear in the Message Line at the bottom left of the instrument s display window as shown in Figure 3 1 below A Condition is a state of the instrument which is characterized by a Detection event and a Clearing event Co...

Page 68: ...ges are logged in the error queues If the error is a condition both the Detected and Cleared events are logged Warnings Warning messages appear when a requested operation has completed successfully but there are modifications and or side effects For example if you requested too high a stop frequency then Data out of range is displayed and the analyzer sets itself to the highest available stop freq...

Page 69: ... with the current instrument settings Changing it does not affect the current measurement For example setting the number of FFTs Span when you are not in the FFT mode A benign grayout gives an Advisory type of message only when the front panel key is pressed The requested function cannot be changed from the front panel but it can be changed remotely 2 Forced the requested function is not available...

Page 70: ...ommand sent over a remote interface the resulting messages are logged in the queue for that interface For convenience they are also logged in the front panel queue Front Panel History Error messages can be viewed by pressing System Show Errors History The History screen shows all the error events that have occurred since the instrument was turned on with a maximum of 100 messages When an error sit...

Page 71: ... Show Errors Clear Error Queue Clears the errors in all the queues Send CLS command to the desired interface Clears errors in the queue for this particular interface only Table 3 3 Summary of Event Reporting Modes Event Type SCPI Error Queues Front Panel History Queue Status Panel Display Error Event Logged Logged Displayed in Message Line Warning Event Logged Logged Displayed in Message Line Advi...

Page 72: ...own keys to change the Start frequency the value of the Span is kept constant Therefore the start frequency is limited by the frequency range of the instrument Allowable Stop frequency exceeded for the current span When rotating the knob or step up down keys to change the Stop frequency the value of the Span is kept constant Therefore the stop frequency is limited by the frequency range of the ins...

Page 73: ...etector X changed due to physical constraints You have selected more detectors than the instrument hardware can implement An existing detector selection has been changed to allow the current detector choice to be selected X indicates the trace number for which the detector was changed Dynamic range is not optimum Set AUTO RF input Exp Averaging not available when AUTO PhNoise is active FFT Width i...

Page 74: ...F fixed freq should be greater than the RF Stop freq for an upconverter swept LO setup Use the graph icon on the DUT setup form to clarify the setup required IF Start freq should be greater than LO Fixed freq The setup frequencies break the rules for an upconverter measurement The measurement will still run but check setup frequencies are correct before continuing The IF start freq should be great...

Page 75: ...The measurement will still run but check setup frequencies are correct before continuing The LO Stop freq should be greater than the RF Stop freq s for a DSB for DSB measurements the setup uses LSB values downconverter swept LO setup Use the graph icon on the DUT setup form to clarify the setup required Low pass filter set to OFF Turning on any band pass filter will turn off low pass filters No sp...

Page 76: ... for an USB downconverter fixed LO setup Use the graph icon on the DUT setup form to clarify the setup required RF Start freq should be greater than LO Start freq The setup frequencies break the rules for a downconverter measurement The measurement will still run but check setup frequencies are correct before continuing The RF start freq should be greater than the LO Start freq s for an USB downco...

Page 77: ...d to error 221 such as Settings Conflict Function not available in Zero Span This helps you understand the exact cause of the Settings Conflict error Sync is RF Ampl not Training Sequence Bits are not accurate Trace file saved The trace saving operation was successful Use Gate View Sweep Time in the Gate menu When in Gate View you use Gate View Sweep Time rather than Sweep Time to control the Gate...

Page 78: ...t has detected an off to on transition in its power supply Err Message Verbose Correction Information 400 Query Error There was a problem with a query command The exact problem cannot be specifically identified 410 Query INTERRUPTED Some condition caused an INTERRUPTED query to occur For example a query was followed by DAB or GET before a response was completely sent 420 Query UNTERMINATED Some co...

Page 79: ...h the network driver failed 310 System error Failed to initialize the PTP clock to current time Failure communicating with the DMC libraries PTP controller 310 System error Failed to instantiate the PTP ordinary clock Failure in the starting up the DMC libraries PTP controller 310 System error feature feature code not licensed The specified feature for example N9073A TR2 is not licensed The licens...

Page 80: ...stem error The PTP ordinary clock reported a configuration error Failure in execution of the DMC libraries PTP controller 310 System error The Trigger alarm delayed LAN event was not scheduled due to an existing pending event Delayed LAN events cannot occur too close together within 20 ms 310 System error The Trigger alarm delayed LAN event was not scheduled due to a conflict with an existing sche...

Page 81: ...Communication error SNS data read failure Disconnect then reconnect SNS The Keysight Smart Noise Source connected to the instrument has failed to be read by the application Please disconnect and reconnect the SNS If this continues to fail then the SNS may have had its EEPROM corrupted or another hardware fault exists Check SNS on another instrument NFA and ESA are also SNS compatible instruments C...

Page 82: ... set based on the probe type It cannot be changed manually 221 Settings conflict A legal command was received but it could not be executed due to the current device state 221 Settings conflict CSV file format is not available in this measurement You cannot load or save base instrument traces as this is not supported by the Log Plot measurement 221 Settings conflict Q Param cannot be changed when Q...

Page 83: ...race for the cancellation has a different range of X axis against the target trace 221 Settings conflict Cannot optimize while user cal in progress Optimize Preselector cannot be performed while a user cal is in progress The user cal performs an optimize preselector prior to taking the noise source on off level results for the cal data 221 Settings conflict Can t Auto Couple Res BW in Zero Span Th...

Page 84: ...not available above 3 6 GHz The maximum frequency of the electronic attenuator is 3 6 GHz This is because of switching capacitance 221 Settings conflict Electronic attenuator unavailable in current state 221 Settings conflict Electronic attenuator unavailable with Preamp on The internal preamp is on Electronic attenuator cannot be used while you are using the internal preamp 221 Settings conflict ...

Page 85: ...o High because that would make the Reference Level couplings wrong in FFT mode 221 Settings conflict FFT method is unavailable for level gating If you are using level gating you cannot select the FFT Gate Method 221 Settings conflict FFT sweep type is not available while in Gated LO The gated LO function turns the LO on and off as it sweeps so the FFT sweep type is not available if you have select...

Page 86: ...eselector because the Microwave Preselector is currently off 221 Settings conflict Gate control is Edge for Gated FFT You cannot use level triggering to control the gate if you are using the FFT gating method 221 Settings conflict Gate control must be Edge for this Gate Source You cannot use level triggering to control the gate when you are using the currently selected gate source 221 Settings con...

Page 87: ...ailable while Sweep Type is set to FFT The gated video function is not available if you have selected the FFT sweep type 221 Settings conflict Incorrect RBW for demod Change RBW 221 Settings conflict Ind I Q is not available for this measurement The Independent I and Q setting is not available for the current measurement Only some measurements initially only VXA support this setting 221 Settings c...

Page 88: ...k width or so wide that there are too few display points to allow the mask to be drawn Increase or decrease the span to display the mask 221 Settings conflict Meas Type was changed to Examine for Exp Avg Mode Average Mode has been changed to Exponential Full Meas Type is not available for Exponential Average Mode therefore Meas Type has been changed to Examine 221 Settings conflict Meas Type was c...

Page 89: ...on so if trace math is on you cannot turn on normalization 221 Settings conflict Only active Antenna Unit available no other Y axis units When a correction with antenna units is turned on the only Y axis units you can have are those that match the Antenna Unit Turn off the Correction or the Antenna Unit under Input Output Corrections 221 Settings conflict Option not available You have attempted to...

Page 90: ...be in same window A delta marker and its reference must be in the same window This error occurs when you try to turn on a delta marker for which the reference is in a different window 221 Settings conflict Relative Trigger needs hardware support for this meas To do Relative Triggering in this measurement requires optional hardware that is not present in this analyzer 221 Settings conflict Scale Ty...

Page 91: ...sweeps is set by the calculations So sweep time settings cannot be adjusted 221 Settings conflict Sweep Time cannot be auto coupled while in Zero Span You cannot send the remote command to set the sweep time to auto while you are in zero span 221 Settings conflict Sweep Time cannot be set while in FFT sweeps The sweep time for FFT sweeps is set by the calculations It cannot be manually controlled ...

Page 92: ...ing Source unavailable in FFT Sweeps Since FFTs do not sweep you cannot use a Tracking Source while doing FFTs 221 Settings conflict Trigger input in use for source synchronization If Point Trigger is being used with an external trigger input to synchronize an external source to the analyzer that trigger input is unavailable for triggering 221 Settings conflict Trigger is not available with span 0...

Page 93: ... on any EMI Detector and Average detector together They are always mutually exclusive 221 Settings conflict Freq 1 GHz is not available while RF Input 2 enabled Frequency is limited to 1GHz while RF Input 2 is enabled 221 Settings conflict Function not available while measurement is running Settings change is not allowed while measurement is running You must stop the current measurement if you wis...

Page 94: ... 2 is not available above 1GHz If the frequency range is set above 1GHz you cannot change to RF Input 2 221 Settings conflict Scan Time Points do not apply in current Step Time Control The Scan Time Points are not available when Step Time Control is set to Step Dwell 221 Settings conflict Step Size Meas Time do not apply in current Step Time Control The Step Size Meas Time are not available when S...

Page 95: ...ble as it has reached full zoom 200 Execution Error A program execution error has occurred The exact problem cannot be specifically identified 200 Execution error Carrier frequency outside device s transmit band The entered channel carrier frequency is not within the range of your current mode setup selection of standard and device 200 Execution error Invalid GSM burst timing A GSM like burst was ...

Page 96: ...rsion of the Phase Noise personality which uses a different trace format that is incompatible with the version you are running Please check that you are running the most up to date version of the personality 200 Execution error Trace file created by incompatible version of Phase Noise App The trace file may have been created by another version of the Phase Noise personality which uses a different ...

Page 97: ...d 212 Arm ignored An arming signal was received but it was ignored 213 Init ignored An initiate trigger sweep request was received and ignored because another measurement was already in progress 214 Trigger deadlock The trigger source for the initiation of a measurement is set to GET and the following measurement query was received The measurement cannot be started until a GET is received but the ...

Page 98: ...pected parameter values 224 Illegal parameter value Value invalid Fractional values are not allowed The seconds parameter of an LXI time may not contain a fractional portion For example 123456789 0 is valid but 123456789 1 is not valid 224 Illegal parameter value value out of range The value does not fall within the valid range 224 Illegal parameter value Exceeding the max list length The list par...

Page 99: ...a new LXI Event is created it may not use the comma semicolon or newline characters All other printable ASCII characters are valid 224 Illegal parameter value LXI Event event does not exist The requested event has not been added yet 224 Illegal parameter value Measurement not available You tried to turn on a measurement that is not available in the current mode 224 Illegal parameter value This ins...

Page 100: ... the data format or the data structure was not correct 232 Invalid format Map information not loaded Instrument failed to load the burst mapping information from the selected file 233 Invalid version A legal data element was found but could not be used because the version of the data is incorrect For example state data changes as new instrument features are added so old state files may not work in...

Page 101: ...e Attempt to import Corrections file with Antenna Unit that differs from an in use correction 250 Mass storage error Directory not found The system cannot find the path specified 250 Mass storage error Failed to Load trace Bad file format The load trace operation could not be completed as the input file was not in the expected format You can only load traces that were previously saved using the Sa...

Page 102: ...check that the device is properly formatted 250 Mass storage error Pk Table must be on to save Pk Table as Meas Results You must have a Peak Table on the screen before you can save it Turn on the Peak Table and try again 250 Mass storage error Read fault The system cannot read from the specified device 250 Mass storage error Register number empty Attempt to recall a register with nothing in it 250...

Page 103: ...use the media was protected For example the write protect was set 260 Expression error An error was found with an expression type of data element The exact problem cannot be specifically identified 261 Math error in expression An expression that has legal syntax could not be executed because of a math error For example maybe you are dividing by zero 270 Macro error Indicates that a macro related e...

Page 104: ...al program name The name used to reference a program was invalid for example redefining an existing program deleting a nonexistent program or in general referencing a nonexistent program 283 Illegal variable name An attempt was made to reference a nonexistent variable in a program 284 Program currently running Certain operations dealing with programs may be illegal while the program is running for...

Page 105: ...is a general error that is generated when a problem is found in a command header but no more specific information is available 111 Header separator error An illegal character was found in a command where a separator was expected 112 Program mnemonic too long The command contains a keyword that has more than twelve characters 113 Undefined header The command meets the SCPI syntax requirements but i...

Page 106: ... string type of data element was expected but it is invalid for some reason For example an END message was received before the terminal quote character 158 String data not allowed A string data element that you sent is valid but it is not allowed at this point in the parsing 160 Block data error A problem was found with a block data element The exact problem cannot be specifically identified 161 I...

Page 107: ...h a DDT or DMC command is syntactically invalid 184 Macro parameter error Indicates that a command inside the macro definition had the wrong number or type of parameters Err Message Verbose Correction Information 0 No error The queue is empty Either every error in the queue has been read or the queue was cleared by power on or CLS Err Message Verbose Correction Information ...

Page 108: ...three sub registers with summary bits in the main STATus QUEStionable CALibration register each sub register has its own range of error numbers Condition Errors 6 to 34 Calibration Skipped This series of errors corresponds to the bits in the STATus QUEStionable CALibration SKIPped sub register The second column in the table shows the corresponding bit in that register An event with the error numbe...

Page 109: ...its they exist only as status bits which can be read with a STATus QUEStionable CALibration event query or a STATus QUEStionable CALibration CONDition query Note that these summary bits summarize the state and history of the event registers at the lower level This is true even for bits in the STATus QUEStionable CALibration condition register This means that The summary bits read by the STATus QUE...

Page 110: ...t Failure E 42 3 RF Alignment Failure E 44 4 IF Alignment Failure E 46 5 LO Alignment Failure E 48 6 ADC Alignment Failure E 50 7 FM Demod Alignment Failure E 52 8 Extended Align Needed Summary status bit only This bit is the summary bit for the STATus QUEStionable CALibration EXT ended NEEDed sub register 54 9 Extended Align Failure Summary status bit only This bit is the summary bit for the STAT...

Page 111: ...s that the Input Attenuation not calibrated condition has been detected and error 1072 indicates that failure has been cleared This register is summarized as bit 8 of the STATus QUEStionable CALibration register as described in the section Condition Errors 36 to 64 Calibration Needed or Failed on page 109 Err Bit in status register Message Error or Warning More Information 65 0 unused 66 1 Align 9...

Page 112: ...ED and CLEARED indicators For example error 71 indicates that the Characterize Preselector Failure has been detected error 1071 indicates that failure has been cleared This register is summarized as bit 9 of the STATus QUEStionable CALibration register as described in the section Condition Errors 36 to 64 Calibration Needed or Failed on page 109 Err Bit in status register Message Error or Warning ...

Page 113: ...his is true even for bits in the STATus QUEStionable INTegrity condition register This means that The summary bits read by the STATus QUEStionable INTegrity CONDition query are true if any event bits are set in any of the INTegrity sub registers SIGNal or UNCalibrated The summary bits read by the STATus QUEStionable INTegrity event query are true if any event bit has undergone a false to true tran...

Page 114: ...V and I bar is at 5 0 the ADC will be in range but both I and I bar will exceed the voltage limit 141 4 Input Overload RF Preselector Overload Ea The level at the input of the MXE RF Preselector has exceeded tolerances reduce the input level 143 5 unused 145 6 unused 147 7 Insufficient Data E 147 7 Insufficient Data Incr Demod Time E There is insufficient acquisition data to provide accurate metri...

Page 115: ...ng in the history queue but there IS an on screen indication and a status bit 159 13 Settings Alert W 159 13 Settings Alert LO may overload IF W If the sweep type is Swept the start frequency of the instrument is less than 10 MHz and you put Swept IF Gain in Manual High then a warning condition is generated and remains in effect as long as this condition exists In some older analyzers this was err...

Page 116: ...s the impedance and differential settings should be the same on both channels and the attenuation should match within 1 dB 159 13 Settings Alert Parm data mismatch W For Bluetooth the detected parameters did not match the data 159 13 Settings Alert Src pwr ramp ALC range W You have selected a Power Sweep range that exceeds the ability of the external Source to follow without changing mechanical at...

Page 117: ...cted or the burst is less than 126 microseconds Carrier signal is not actually bursted W CDMA Either the signal being analyzed has insufficient power the rising or falling edges cannot be detected or the burst is less than 126 microseconds W CDMA Cannot synchronize measurement with PRACH channel for Power Control measurement because the signal cannot be found Make sure PRACH is present in the W CD...

Page 118: ...eck that the LO frequency limits are set correctly and check the entered measurement frequencies and measurement mode 215 6 Sync Error E W CDMA Cannot sync DPCCH pilot Cannot synchronize measurement with DPCCH pilot for Power Control measurement because the pilot signal cannot be found Make sure DPCCH is present in the W CDMA uplink signal and that the slot format and scramble code are set correct...

Page 119: ... active channel is found from composite EVM measurement An active channel must meet the default threshold criteria that it is within 20 dB of the highest power code channel The threshold can be changed using the active set threshold function in the Meas Setup menu In PSA this error was reported as one of the following error numbers 10872 10962 13070 10228 10768 217 7 Demod Error Can t correlate E ...

Page 120: ...E NADC PDC The valid EVM measurement cannot be performed because the input signal is too noisy GSM EDGE In a GSM measurement indicates that a burst could not be found in a signal that appears noisy In PSA this error was reported as one of the following error numbers 10702 10824 10906 10930 13024 10626 111 221 9 Slot Error E 221 9 Slot error No active slot found E No valid active slot found in capt...

Page 121: ... 301 indicates a Meas Uncal condition has been detected error 1301 indicates that failure has been cleared This register is summarized as bit 3 of the STATus QUEStionable INTegrity register as described in the section Condition Errors 101 to 199 Measurement Integrity on page 113 Err Bit in status register Message Error or Warning More Information 301 0 Meas Uncal W 303 1 Signal ID on W 305 2 No Lo...

Page 122: ...ttenuation setting is selected but has not been calibrated Preamp If set to condition different from current cal settings for example if calibrated with the preamp on turning it off will invalidate the cal Points Changing the number of measured frequency points can make the stored preselector offsets become inaccurate and hence invalidate the calibration This occurs when the following conditions e...

Page 123: ...or frequencies greater than the table range ENR 311 5 Calibration No ENR data present W No ENR Data ENR 313 6 Source Uncal W 313 6 Source Uncal adj Start Freq or RBW W While using a Tracking Source you must make sure the Start Frequency is high enough to avoid capturing LO feedthrough in the trace This depends on both Start Freq and RBW If you get this message increase the Start Freq or narrow the...

Page 124: ... with the DETECTED and CLEARED indicators For example error 409 indicates a 50 MHz Oscillator Unleveled condition has been detected error 1409 indicates that failure has been cleared This register is summarized as bit 3 of the STATus QUEStionable register as described in the section Condition Errors 601 to 699 Error Summaries on page 126 Err Bit in status register Message Error or Warning More Inf...

Page 125: ...1503 indicates that failure has been cleared This register is summarized as bit 5 of the STATus QUEStionable register as described in the section Condition Errors 601 to 699 Error Summaries on page 126 Err Bit in status register Message Error or Warning More Information 501 0 Source Synth Unlocked E 503 1 Frequency Reference Unlocked E 505 2 2nd LO Unlocked E 507 3 unused 509 4 LO Unlocked E 511 5...

Page 126: ...s that The summary bits read by the STATus QUEStionable CONDition query are true if any event bits are set in any of the QUEStionable sub registers POWer TEMPerature FREQuency CALibration or INTegrity The summary bits read by the STATus QUEStionable event query are true if any event bit has undergone a false to true transition with the PTRansition filter set or a true to false transition with the ...

Page 127: ...g column below these are status bits only with no corresponding error message or number 609 4 Temperature status bit only This bit is the summary bit for the STATus QUEStionable TEMPerature sub register 611 5 Frequency status bit only This bit is the summary bit for the STATus QUEStionable FREQuency sub register 613 6 unused 615 7 unused 617 8 Calibration status bit only This bit is the summary bi...

Page 128: ...ing status bit only The Source Sweeping bit is used to indicate various conditions depending on the Mode of operation In the List Sequencer mode it is used to indicate that the sequencer is running In the EMI Receiver mode it is used to indicate that scan results are available from the Frequency Scan measurement 721 10 DC Coupled W 723 11 unused 725 12 Source Waiting for Trigger status bit only 72...

Page 129: ...ewed in the Show Errors screen along with the DETECTED and CLEARED indicators For example error 801 indicates that the Ref Osc Oven Cold condition has been detected error 1801 indicates that condition has been cleared This register is summarized as bit 4 of the STATus QUEStionable register as described in the section Condition Errors 601 to 699 Error Summaries on page 126 Err Bit in status registe...

Page 130: ...130 Keysight N9038A MXE Service Guide Instrument Messages Condition Messages ...

Page 131: ...el Control Section Purpose on page 132 Input Selection Level Control Assembly Descriptions on page 133 A9 Input Attenuator A on page 133 A10 Attenuator B on page 145 A23 Limiter Assembly on page 134 SW1 Cal Switch on page 135 SW2 Transfer Switch on page 135 Input Selection Level Control Section Troubleshooting on page 136 A9 Attenuator A on page 136 A10 Attenuator B on page 145 A23 Limiter Assembl...

Page 132: ...alibration signals to the RF Downconverter section of the instrument There are also two input attenuators that are used to optimize the signal level applied to the downconverter section This section also contains a limiter assembly that will protect the Front End of the instrument from transient signals that are often present when performing conducted emissions testing Input Selection Level Contro...

Page 133: ... also has a second RF input port Unlike the Option 503 508 and 526 A9 Input Attenuator A this does not have a switchable DC block it is always DC coupled Because of this the low end minimum frequency range is always 20 Hz Control for this assembly comes from the A15 Front End Controller assembly A10 Input Attenuator B There are two different A10 Input Attenuator B assemblies used in the N9038A One...

Page 134: ...issions measurements Control for this assembly comes from the A21 RF Preselector Input assembly A23 Limiter Assembly Connections The connections to and from the A23 Limiter assembly are as listed in Table 4 1 and as illustrated in Figure 4 1 below Figure 4 1 A23 Limiter Assembly Connections Table 4 1 A23 Limiter Assembly Signals Port Description To From Cable J102 IF Input RF Input J2 W26 J103 RF ...

Page 135: ...tor signals from the A16 Reference assembly into the signal path in front of the input attenuators Control for this assembly comes from the A21 RF Preselector Input assembly SW2 Transfer Switch This assembly is used to select whether or not to divert the input signal through the RF Preselector section of the instrument or not Control for this assembly comes from the A21 RF Preselector Input assemb...

Page 136: ...uation is the same for all instruments the distribution of the attenuator sections within the attenuators is not quite the same The Option 503 508 and 526 A9 Attenuator A has a total of only 4 dB of attenuation while the Option 544 attenuator has 10 dB Also the Option 544 attenuator does not have the AC DC coupling selection that the one for Option 503 508 and 526 does Option 503 508 526 There are...

Page 137: ...shooting Option 544 There are two different functions that the A9 Attenuator A assembly provides as shown in Figure 4 3 These functions will be verified with the procedure in this section They are 1 RF Input Selection 2 Attenuation Selection 0 to 10 dB in 2 dB steps Figure 4 3 A9 Attenuator A Functions Option 544 ...

Page 138: ...enuator A Functionality 1 Remove the instrument dress cover MP24 top brace MP10 and right side outer MP5 Refer to Chapter 18 Assembly Replacement Procedures for instructions on removing these covers 2 Referring to Figure 4 4 or Figure 4 5 remove W25 W28 and W29 from A9 Attenuator A Figure 4 4 A9 A10 Cable Identification Option 503 508 and 526 ...

Page 139: ... Off AC DC Coupling Selection Option 503 508 and 526 only 5 If the instrument has Option 544 skip to step 16 6 Tune the instrument to a span of 0 Hz by pressing SPAN Zero Span 7 Connect a signal generator to the A9 Attenuator A RF Input 2 Refer to Figure 4 4 8 Tune the signal generator to 1 MHz with an amplitude of 20 dBm 9 Connect a spectrum analyzer to the A9 Attenuator A RF Output Refer to Figu...

Page 140: ...ation on how to verify the control signals to it Figure 4 6 A9 Attenuator A AC DC Input Coupling 13 Turn on the Marker Delta function of the spectrum analyzer being used 14 Change the instrument input coupling to AC by pressing Input Output RF Input RF Coupling AC 15 Verify that the signal level on the spectrum analyzer drops by at least 5 dB from where it was when the RF Coupling was set to DC as...

Page 141: ...1 MHz 19 Verify that the signal level on the spectrum analyzer is at 20 dBm 0 25 dB as shown in Figure 4 7 allowing for any additional test cable loss If the signal level is incorrect the most likely cause of the problem is the A9 Attenuator A assembly itself However before replacing an A9 Attenuator A assembly for any failure refer to Chapter 8 Front End Control for information on how to verify t...

Page 142: ...Attenuator A assembly itself However before replacing an A9 Attenuator A assembly for any failure refer to Chapter 8 Front End Control for information on how to verify the control signals to it Figure 4 8 A9 Attenuator A 2 dB 23 Change the A9 Attenuator A setting to 4 dB by pressing AMPTD Attenuation Mech Atten 4 dB 24 Verify that the signal level on the spectrum analyzer drops by 4 dB from where ...

Page 143: ...setting to 6 dB by pressing AMPTD Attenuation Mech Atten 6 dB 27 Verify that the signal level on the spectrum analyzer drops by 6 dB from where it was as shown in Figure 4 10 If the signal level is incorrect the most likely cause of the problem is the A9 Attenuator A assembly itself However before replacing an A9 Attenuator A assembly for any failure refer to Chapter 8 Front End Control for inform...

Page 144: ...Control Section Troubleshooting Figure 4 10 A9 Attenuator A 6 dB Option 544 only 28 If no problem has been found with the functionality of the A9 Attenuator A assembly carefully reconnect W25 W28 and W29 to the A9 Attenuator A as shown if Figure 4 4 Torque all cable connections to 10 in lbs ...

Page 145: ... Option 544 attenuator has only 60 dB Unlike the A9 Attenuator A the A10 Attenuator B assembly has just one function that of a variable attenuator as seen in Figure 4 11 and Figure 4 12 This functionality will be verified with the procedure in this section Figure 4 11 A10 Attenuator B Option 503 508 and 526 Figure 4 12 A10 Attenuator B Option 544 Verifying The A10 Attenuator B Functionality 1 Remo...

Page 146: ...to the A10 Attenuator B RF Output Refer to Figure 4 4 or Figure 4 5 9 Tune the spectrum analyzer to 1 GHz with a span of 1 MHz 10 Change the A10 Attenuator B setting to 0 dB by pressing AMPTD Attenuation Mech Atten 0 dB 11 Verify that the signal level on the spectrum analyzer is at 20 dBm 0 25 dB as shown in Figure 4 13 allowing for any additional test cable loss If the signal level is incorrect t...

Page 147: ... Attenuation Mech Atten 10 dB 14 Verify that the signal level on the spectrum analyzer drops by 10 dB 0 25 dB from where it was as shown in Figure 4 14 If the signal level is incorrect the most likely cause of the problem is the A10 Attenuator B assembly itself However before replacing an A10 Attenuator B assembly for any failure refer to Chapter 8 Front End Control for information on how to verif...

Page 148: ...nctionality of the A10 Attenuator B assembly carefully reconnect W29 and W30 to the A10 Attenuator B as shown in Figure 4 4 Torque all cable connections to 10 in lbs Table 4 2 A10 Attenuator B Settings Attenuation Section Used 6 dB 10 dB 20 dB 30 dB 0 dB No No No No 6 dBa Yes No No No 10 dB No Yes No No 20 dB No No Yes No 30 dB No No No Yes 40 dB No Yes No Yes 50 dB No No Yes Yes 60 dB No Yes Yes ...

Page 149: ...op brace MP10 Refer to Chapter 18 Assembly Replacement Procedures for instructions on removing these covers 2 Remove the hardware that attaches the front frame assembly to the chassis and slide it away from the rest of the instrument but do not disconnect W8 which connects it to the A8 Motherboard assembly Refer to Chapter 18 Assembly Replacement Procedures for instructions on removing the front f...

Page 150: ...ts boot up process ignoring any error messages 6 Connect a signal generator to the instrument RF Input 2 as shown in Figure 4 16 7 Tune the signal generator to 100 MHz with an amplitude of 20 dBm 8 Connect a spectrum analyzer to the A23 Limiter assembly Output J103 as shown in Figure 4 16 9 Tune the spectrum analyzer to a frequency of 100 MHz with a span of 10 MHz 10 Verify that the signal level o...

Page 151: ... is incorrect the most likely cause of the problem is the A23 Limiter assembly itself However before replacing the A23 Limiter assembly be sure to verify that the control voltages to the assembly are of the correct level This can be verified in the A21 RF Input Assembly section of the chapter Figure 4 17 A23 Limiter Assembly Signal Path Loss ...

Page 152: ...e 4 16 disconnect W6 from the A23 Limiter assembly LED Drive Output P2 4 Turn the instrument on and allow it to complete its boot up process ignoring any error messages 5 Tune the instrument to a frequency of 10 MHz with a span of 0 Hz by pressing FREQ 100 MHz and SPAN Zero Span 6 Switch the instrument to the primary RF Input by pressing Input Output RF Input RF Input Port RF Input 7 Referring to ...

Page 153: ...evel Control Input Selection Level Control Section Troubleshooting Figure 4 18 A23 Limiter Assembly P2 Pinout Table 4 3 A23 Limiter Assembly LED Control Voltage Levels RF Input Port P2 Pin 1 2 3 4 RF Input 0 7 V 0 V 5 0 V 0 V RF Input 2 5 0 V 0 V 0 7 V 0 V ...

Page 154: ...re 4 18 verify that the DC voltage levels on the 4 pins of the A23 Limiter assembly front panel LED Drive Output P2 are as outlined in Table 4 3 when the RF Input Port is RF Input 2 If the voltage levels are incorrect verify that the A23 Limiter control voltages coming from the A21 RF Preselector Input assembly are correct before replacing the A23 Limiter assembly This can be verified in the A21 R...

Page 155: ...nstrument dress cover MP24 and top brace MP10 Refer to Chapter 18 Assembly Replacement Procedures for instructions on removing these covers 2 Remove the hardware that attaches the front frame assembly to the chassis and slide it away from the rest of the instrument but do not disconnect W8 which connects it to the A8 Motherboard assembly or W1 which connects to the A23 Limiter assembly Refer to Ch...

Page 156: ...nt routine off by pressing System Alignments Auto Align Off 6 Connect a signal generator to the SW1 Cal Switch RF Input P1 as shown in Figure 4 21 7 Tune the signal generator to 100 MHz with an amplitude of 20 dBm 8 Connect a spectrum analyzer to the SW1 Cal Switch Output PC as shown in Figure 4 21 9 Tune the spectrum analyzer to 100 MHz with a span of 1 MHz If there is a particular frequency of i...

Page 157: ...the Output PC by pressing Input Output RF Input RF Input Port RF Input 2 11 Verify that the signal level on the spectrum analyzer is at 20 dBm 0 25 dB as shown in Figure 4 22 allowing for any additional test cable loss If the signal level is incorrect the most likely cause of the problem is the SW1 Cal Switch itself However before replacing an SW1 Cal Switch for any failure refer to the A21 RF Pre...

Page 158: ...r 50 MHz 14 Verify that the signal level on the spectrum analyzer is at 20 dBm 0 25 dB as shown in Figure 4 22 allowing for any additional test cable loss If the signal level is incorrect the most likely cause of the problem is the SW1 Cal Switch itself However before replacing an SW1 Cal Switch for any failure refer to the A21 RF Preselector Input Assembly on page 175 for information on how to ve...

Page 159: ...ch Functionality 1 Remove the instrument dress cover MP24 and top brace MP10 Refer to Chapter 18 Assembly Replacement Procedures for instructions on removing these covers 2 Remove the hardware that attaches the front frame assembly to the chassis and slide it away from the rest of the instrument but do not disconnect W8 which connects it to the A8 Motherboard assembly or W1 which connects to the A...

Page 160: ...analyzer to 100 MHz with a span of 1 MHz 10 Switch the instrument to bypass the RF preselector which will connect the SW2 Transfer Switch RF Input P1 to the RF Output P4 by pressing Input Output RF Input RF Preselector Off 11 Verify that the signal level on the spectrum analyzer is at 20 dBm 0 25 dB as shown in Figure 4 24 allowing for any additional test cable loss If the signal level is incorrec...

Page 161: ...t 20 dBm 0 25 dB as shown in Figure 4 24 allowing for any additional test cable loss If the signal level is incorrect the most likely cause of the problem is the SW2 Transfer Switch itself However before replacing an SW2 Transfer Switch for any failure refer to the A21 RF Preselector Input Assembly section on page 175 for information on how to verify the control signals to it 15 Move the signal ge...

Page 162: ...itch itself However before replacing an SW2 Transfer Switch for any failure refer to the A21 RF Preselector Input Assembly section on page 175 for information on how to verify the control signals to it 18 If no problem has been found with the functionality of the SW2 Transfer Switch carefully reconnect W30 W31 W36 and W37 to the SW2 Transfer Switch as shown in Figure 4 20 Torque all cable connecti...

Page 163: ...Purpose on page 164 RF Preselector Section Signal Paths on page 164 RF Preselector Section Assembly Descriptions on page 166 A21 RF Preselector Input Assembly on page 166 A22 Radiated Filter Assembly on page 170 A24 Conducted Filter Assembly on page 173 RF Preselector Section Troubleshooting on page 175 A21 RF Preselector Input Assembly on page 175 A22 Radiated Filter Assembly on page 194 A24 Cond...

Page 164: ...ths that the user can select through this section of the instrument Conducted Filter Path 20 Hz to 30 MHz Radiated Filter Path 30 MHz to 3 6 GHz The components of the RF Preselector section discussed in this chapter are A21 RF Preselector Input Assembly A22 Radiated Filter Assembly A24 Conducted Filter Assembly RF Preselector Section Signal Paths Conducted Filter Path 20 Hz to 30 MHz The input sig...

Page 165: ...rected through the RF Preselector section of the instrument or bypass it When routed through the RF Preselector section the input signal first goes to the A21 RF Preselector Input assembly where it is sent through both a low pass filter and a high pass filter before it is routed to the A22 Radiated Filter assembly In the A22 Radiated Filter assembly the signal is then routed through a tunable band...

Page 166: ...diated Filter assembly Output signals from both the A24 Conducted Filter assembly and the A22 Radiated Filter assembly are routed back through the A21 RF Preselector Input assembly before being routed to the down converter section of the instrument Input Protection The purpose of the limiter is to provide overvoltage protection to the filter boards which is useful while making electromagnetic emis...

Page 167: ...ions require Overload Detection Because of the frequency range differences between the two different filter paths there are two different overload detector designs used However both detectors serve the same purpose and operate in the same basic manner They detect input signal levels that will cause an overload condition in the instrument Front End A23 Limiter Assembly Control Since the A23 Limiter...

Page 168: ...21 RF Preselector Input assembly are as listed in Table 5 1 and as illustrated in Figure 5 1 below Table 5 1 A21 RF Preselector Input Assembly Signals Port Description To From Cable J100 IF Input SW2 Transfer Switch P2 W31 J101 RF Output SW2 Transfer Switch P3 W36 J102 Radiated Path Output A22 Radiated Filter Assembly J100 W34 J103 Conducted Path Output A24 Conducted Filter Assembly J402 W32 J200 ...

Page 169: ...Keysight N9038A MXE Service Guide 169 RF Preselector Section RF Preselector Section Purpose Figure 5 1 A21 RF Preselector Input Assembly Connections ...

Page 170: ...ough 3 each have a lowpass prefilter to reject image signals that are above their frequency range All of the tunable filters are adjusted at the factory and can be readjusted in the field by use of the Service Menu For detailed information on the Service Menu see Chapter 16 Service and Diagnostics Menus The outputs of the six different tunable filter paths are separated into 2 different signal pat...

Page 171: ...he tunable filter paths and one for the fixed filter paths These amplifiers are designed to compensate for the filter loss as well as the overall RF Preselector section loss Since this is the only gain stage for loss compensation in the RF Preselection path the gain of these amplifiers will be greater than any loss on the A22 Radiated Filter assembly This means that there will be an overall gain t...

Page 172: ...ssembly are as listed in Table 5 2 and as illustrated in Figure 5 2 below Figure 5 2 A22 Radiated Filter Assembly Connections Table 5 2 A22 Radiated Filter Assembly Signals Port Description To From Cable J100 IF Input A21 RF Preselector Input Assembly J102 W34 J300 RF Output A21 RF Preselector Input Assembly J306 W35 J400 JTAG Programming n a n a J500 Bias and Control A8 Motherboard J81 n a ...

Page 173: ...lter section covers a frequency range of 20 Hz to 2 MHz and is broken up into 5 different bands They are Band 0 20 Hz to 40 kHz Band 1 20 Hz to 150 kHz Band 2 150 kHz to 1 MHz Band 3 1 MHz to 2 MHz Through Path 20 Hz to 2 MHz Bands 0 and 1 use lowpass filters while bands 2 and 3 use bandpass filters Band 0 is not used during normal instrument operation The through path has no filtering and is only...

Page 174: ...ut The amplifier is used to compensate for the losses contributed by the switches the filter insertion loss and general signal path loss A24 Conducted Filter Assembly Connections The connections to and from the A24 Conducted Filter assembly are as listed in Table 5 3 and as illustrated in Figure 5 3 below Figure 5 3 A24 Conducted Filter Assembly Connections Table 5 3 A24 Conducted Filter Assembly ...

Page 175: ... A22 Radiated Filter assembly control of both SW1 Cal Switch and SW2 Transfer Switch control of the A23 Limiter assembly preamplification of the input signal in both the conducted and radiated filter paths as well as providing alignment signals for the RF preselector filters there are quite a few different things that will need to be checked to verify that it is functioning properly They are 1 Ass...

Page 176: ...bly should identify itself on this list as RF Presel Input If this assembly does not identify itself the cause for this will need to be determined before any other troubleshooting is performed The most probable causes for this type of a problem would be An instrument power supply voltage is not operating properly Solution Verify all instrument power supply voltages See Chapter 12 Power Supply Midp...

Page 177: ...t to complete its boot up process ignoring any error messages 4 Turn the instrument self alignment routine off by pressing System Alignments Auto Align Off SW1 Cal Switch Control 5 Switch the instrument input to RF Input 2 by pressing Input Output RF Input RF Input Port RF Input 2 6 Verify that the RF Calibrator signal is turned off by pressing Input Output RF Calibrator Off 7 Measure the DC volta...

Page 178: ...Preselector Input assembly as shown in Figure 5 6 and verify that they are what is expected for the RF Calibrator set to 50 MHz as shown in Table 5 4 If the voltage levels are incorrect the most likely cause of the problem is the A21 RF Preselector Input assembly itself SW2 Transfer Switch Control 10 Verify that the RF Preselector is turned off by pressing Input Output RF Input RF Preselector Off ...

Page 179: ...bly is controlled by a single ribbon cable W1 that comes from J602 on the A21 RF Preselector Input assembly as seen in Figure 5 4 Verifying Control For the A23 Limiter Assembly 1 Remove the instrument dress cover MP24 and the top brace MP10 Refer to Chapter 18 Assembly Replacement Procedures for instructions on removing these covers 2 Referring to Figure 5 4 remove W1 from A21 RF Preselector Input...

Page 180: ...essing Input Output RF Input RF Input Port RF Input 2 8 Measure the DC voltages on pins 1 through 6 on J602 of the A21 RF Preselector Input assembly as shown in Figure 5 7 and verify that they are what is expected for the RF Input Port being RF Input 2 as shown in Table 5 6 If the voltage levels are incorrect the most likely cause of the problem is the A21 RF Preselector Input assembly itself Tabl...

Page 181: ...1 W32 and W34 from the A21 RF Preselector Input assembly 3 Turn the instrument on and allow it to complete its boot up process ignoring any error messages 4 Turn the instrument self alignment routine off by pressing System Alignments Auto Align Off Input Signal Routing Verification Conducted Band 5 Connect a signal generator to the A21 RF Preselector Input assembly RF Input J100 as shown in Figure...

Page 182: ... on the spectrum analyzer into its Max Hold function 12 Slowly vary the frequency of the signal generator between 500 kHz and 100 5 MHz to draw out the shape of the conducted band pre filter on the spectrum analyzer display as shown in Figure 5 9 13 Verify that the filter shape on the spectrum analyzer display is similar to that shown in Figure 5 9 If the filter shape is incorrect the most likely ...

Page 183: ...kely cause of the problem is the A21 RF Preselector Input assembly itself Figure 5 10 A21 RF Preselector Input Assembly Radiated Band Pre Filter Pre Filter Shape Verification Radiated Band 19 Placing one of the active traces on the spectrum analyzer into its Max Hold function 20 Slowly vary the frequency of the signal generator between 1 MHz and 6 GHz to draw out the shape of the radiated band pre...

Page 184: ...n Figure 5 11 Figure 5 11 A21 RF Preselector Input Assembly Output Switching Verifying Output Signal Routing and Preamplifier Gain 1 Remove the instrument dress cover MP24 and the top brace MP10 Refer to Chapter 18 Assembly Replacement Procedures for instructions on removing these covers 2 Referring to Figure 5 4 and Figure 5 5 remove W33 W35 and W36 from the A21 RF Preselector Input assembly 3 Tu...

Page 185: ...r to the A21 RF Preselector Input assembly RF Output J101 as shown in Figure 5 4 8 Tune the spectrum analyzer to a frequency of 10 MHz with a span of 10 MHz 9 Tune the instrument to a frequency of 10 MHz with a span of 0 Hz by pressing FREQ 10 MHz and SPAN Zero Span 10 Verify that the signal level on the spectrum analyzer is at 20 dBm 3 dB as shown in Figure 5 12 allowing for any additional test c...

Page 186: ...s no RF Preselector alignment data the signal level when the preamplifier is turned on could also be low Before replacing the A21 RF Preselector Input assembly for a low preamplifier level try running the alignment routine by pressing System Alignments More RF Preselector Align Now 20 Hz to 30 MHz Once the alignment is completed check the level again Figure 5 13 A21 RF Preselector Input Assembly C...

Page 187: ... Hz by pressing FREQ 100 MHz and SPAN Zero Span 19 Verify that the signal level on the spectrum analyzer is at 20 dBm 3 dB as shown in Figure 5 14 allowing for any additional test cable loss If the signal level is incorrect the most likely cause of the problem is the A21 RF Preselector Input assembly itself Figure 5 14 A21 RF Preselector Input Assembly Radiated Band Output 20 Turn on the Marker De...

Page 188: ...ta the signal level when the preamplifier is turned on could also be low Before replacing the A21 RF Preselector Input assembly for a low preamplifier level try running the alignment routine by pressing System Alignments More RF Preselector Align Now 30 MHz to 3 6 GHz Once the alignment is completed check the level again Figure 5 15 A21 RF Preselector Input Assembly Radiated Band Preamp Alignment ...

Page 189: ...es 4 Turn the instrument self alignment routine off by pressing System Alignments Auto Align Off Direct Digital Synthesizer Verification Conducted Band 5 Connect a spectrum analyzer to the A21 RF Preselector Input assembly Conducted Band Pre Filtered Output J103 as shown in Figure 5 4 6 Tune the spectrum analyzer to a start frequency of 10 MHz and a stop frequency of 65 MHz 7 Tune the instrument t...

Page 190: ...utput 10 Vary the frequency of the Direct Digital Synthesizer alignment signal across its frequency range and verify that the signal level remains greater than 35 dBm up to 40 MHz Above 40 MHz the signal level should remain greater than 40 dBm Broad Band Noise Source Radiated Band 11 Move the spectrum analyzer to the A21 RF Preselector Input assembly Radiated Band Pre Filtered Output J102 as shown...

Page 191: ... Figure 5 18 allowing for any additional test cable loss If the signal level is incorrect the most likely cause of the problem is the A21 RF Preselector Input assembly itself Figure 5 18 A21 RF Preselector Input Assembly Noise Source Output Through Path While it is not used during normal instrument operation there is a signal through path on the A21 RF Preselector Input assembly which will be veri...

Page 192: ...r Input assembly RF Output J101 as shown in Figure 5 4 8 Tune the spectrum analyzer to a start frequency of 0 Hz and a stop frequency of 3 6 GHz 9 Tune the A21 RF Preselector Input assembly to the through path by entering the Service menu and pressing More RF Preselector Band Lock Through Band 3 10 Place one of the active traces on the spectrum analyzer into its Max Hold function 11 Slowly vary th...

Page 193: ...Keysight N9038A MXE Service Guide 193 RF Preselector Section RF Preselector Section Troubleshooting Figure 5 19 A21 RF Preselector Input Assembly Through Path ...

Page 194: ...ardware Information screen To view this information press System Show Hardware Once you do this you will see a listing of instrument hardware assemblies that are installed The A22 Radiated Filter assembly should identify itself on this list as RF Presel Radiated Filter If this assembly does not identify itself the cause for this will need to be determined before any other troubleshooting is perfor...

Page 195: ...d properly To verify the instrument power supply voltages see Chapter 12 Power Supply Midplane If the instrument power supply voltages are all correct try reload the FPGA code See FPGA Table 5 7 A22 Radiated Filter Assembly Status LEDs LED LED Color Description Status A22DS410 Green Heartbeat Blinking Normal Operation On FPGA Reference Problem Off FPGA Programming Problem A22DS409 Green Fixed Freq...

Page 196: ...is is accessed by pressing Mode EMI Receiver Meas Setup More Scan Type Discrete then press Restart to start the stepped mode Signal Path Verification There are seven different filtered signal paths and one through path on the A22 Radiated Filter assembly all of which can be selected with the use of the instrument s Service Menu This section will describe how to verify the functionality of all eigh...

Page 197: ... J300 as shown in Figure 5 5 Filter Path Verification 8 Tune the spectrum analyzer to a center frequency and span equal to that shown in Table 5 8 for Band 0 9 Tune the A22 Radiated Filter assembly to the Band 0 filter path by entering the Service menu and pressing More RF Preselector Band Lock Radiated Band 0 10 Tune the filter passband center frequency by pressing Tuned Frequency and entering th...

Page 198: ...22 Radiated Filter assembly be sure to perform the Characterize Preselector routine for the band exhibiting an alignment problem The Characterize Preselector routine can be found in the instrument Service Menu under System Service RF Preselector Characterize RF Preselector All Bands See Chapter 16 Service and Diagnostics Menus for details 15 Repeat step 8 through step 14 for the remained of the A2...

Page 199: ...ation Start Frequency and the Verification Stop Frequency listed in Table 5 9 to draw out the Band 0 through path shape 21 Verify that the through path gain or loss is equal to the Typical Path Gain Loss shown in Table 5 9 for Band 2 and that the frequency response shape is similar to that shown in Figure 5 29 If either the path loss or frequency response shape is incorrect the most likely cause o...

Page 200: ...ght N9038A MXE Service Guide RF Preselector Section RF Preselector Section Troubleshooting Figure 5 22 A22 Radiated Filter Assembly Band 0 Filter Path Figure 5 23 A22 Radiated Filter Assembly Band 1 Filter Path ...

Page 201: ...N9038A MXE Service Guide 201 RF Preselector Section RF Preselector Section Troubleshooting Figure 5 24 A22 Radiated Filter Assembly Band 2 Filter Path Figure 5 25 A22 Radiated Filter Assembly Band 3 Filter Path ...

Page 202: ...ght N9038A MXE Service Guide RF Preselector Section RF Preselector Section Troubleshooting Figure 5 26 A22 Radiated Filter Assembly Band 4 Filter Path Figure 5 27 A22 Radiated Filter Assembly Band 5 Filter Path ...

Page 203: ...N9038A MXE Service Guide 203 RF Preselector Section RF Preselector Section Troubleshooting Figure 5 28 A22 Radiated Filter Assembly Band 6 Filter Path Figure 5 29 A22 Radiated Filter Assembly Band 2 Through Path ...

Page 204: ...ment software The first step in verifying that this has happened is to look at the instrument Hardware Information screen To view this information press System Show Hardware Once you do this you will see a listing of instrument hardware assemblies that are installed The A24 Conducted Filter assembly should identify itself on this list as RF Presel Conducted Filter If this assembly does not identif...

Page 205: ...s cover MP24 and the top brace MP10 Refer to Chapter 18 Assembly Replacement Procedures for instructions on removing these covers 2 Referring to Figure 5 4 remove W32 and W33 from the A24 Conducted Filter assembly 3 Turn the instrument on and allow it to complete its boot up process ignoring any error messages 4 Turn the instrument self alignment routine off by pressing System Alignments Auto Alig...

Page 206: ...cy listed in Table 5 10 to draw out the Band 0 filter shape 13 Verify that the passband gain or loss is equal to the Typical Passband Gain Loss shown in Table 5 10 for Band 0 and that the filter shape is similar to that shown in Figure 5 30 If either the passband gain loss or filter shape is incorrect the most likely cause of the problem is the A24 Conducted Filter assembly itself 14 Repeat step 8...

Page 207: ... the Band 0 through path shape Table 5 10 A24 Conducted Filter Assembly Filtered Signal Paths Service Menu Selection Frequency Range Verification Start Frequency Verification Stop Frequency Typical Passband Gain Loss Band 0a 20 Hz to 40 kHz 0 Hz 100 kHz 1 5 dB Band 1 20 Hz to 150 kHz 0 Hz 500 kHz 1 5 dB Band 2 150 kHz to 1 MHz 0 Hz 3 MHz 1 0 dB Band 3 1 MHz to 2 MHz 0 Hz 5 MHz 1 0 dB Band 4 2 MHz ...

Page 208: ...Repeat step 15 through step 20 for the Band 1 through path using the Verification Start Frequency Verification Stop Frequency and Typical Passband Gain Loss shown in Table 5 11 for Band 1 Verify that the path gain for band 1 is similar to that shown in Figure 5 44 Figure 5 30 A24 Conducted Filter Assembly Band 0 Filter Path Table 5 11 A24 Conducted Filter Assembly Through Signal Paths Service Menu...

Page 209: ...9038A MXE Service Guide 209 RF Preselector Section RF Preselector Section Troubleshooting Figure 5 31 A24 Conducted Filter Assembly Band 1 Filter Path Figure 5 32 A24 Conducted Filter Assembly Band 2 Filter Path ...

Page 210: ...ht N9038A MXE Service Guide RF Preselector Section RF Preselector Section Troubleshooting Figure 5 33 A24 Conducted Filter Assembly Band 3 Filter Path Figure 5 34 A24 Conducted Filter Assembly Band 4 Filter Path ...

Page 211: ...9038A MXE Service Guide 211 RF Preselector Section RF Preselector Section Troubleshooting Figure 5 35 A24 Conducted Filter Assembly Band 5 Filter Path Figure 5 36 A24 Conducted Filter Assembly Band 6 Filter Path ...

Page 212: ...ht N9038A MXE Service Guide RF Preselector Section RF Preselector Section Troubleshooting Figure 5 37 A24 Conducted Filter Assembly Band 7 Filter Path Figure 5 38 A24 Conducted Filter Assembly Band 8 Filter Path ...

Page 213: ...9038A MXE Service Guide 213 RF Preselector Section RF Preselector Section Troubleshooting Figure 5 39 A24 Conducted Filter Assembly Band 9 Filter Path Figure 5 40 A24 Conducted Filter Assembly Band 10 Filter Path ...

Page 214: ...t N9038A MXE Service Guide RF Preselector Section RF Preselector Section Troubleshooting Figure 5 41 A24 Conducted Filter Assembly Band 11 Filter Path Figure 5 42 A24 Conducted Filter Assembly Band 12 Filter Path ...

Page 215: ...038A MXE Service Guide 215 RF Preselector Section RF Preselector Section Troubleshooting Figure 5 43 A24 Conducted Filter Assembly Band 0 Through Path Figure 5 44 A24 Conducted Filter Assembly Band 1 Through Path ...

Page 216: ...216 Keysight N9038A MXE Service Guide RF Preselector Section RF Preselector Section Troubleshooting ...

Page 217: ...ons are found in this chapter RF Downconverter Section Description on page 218 RF Section Purpose on page 218 RF Section Signal Paths on page 220 RF Section Assembly Descriptions on page 225 RF Downconverter Section Troubleshooting on page 233 A11 RF Switch High Band Preamp on page 233 A12 YTF Preselector on page 242 A13 RF Front End Assembly on page 252 Each section describes how the assembly wor...

Page 218: ... GHz Maximum Frequency There are multiple signal paths through the front end of the instrument The number of different signal paths that an instrument uses will depend on the frequency range of the instrument In addition to signal paths there are also different 1st LO mixing modes used within certain signal paths resulting in multiple bands for each frequency range option These bands are defined i...

Page 219: ...iate frequency of 322 5 MHz The components of the RF section discussed in this chapter are A11 RF Switch High Band Preamp A12 YTF Preselector A13 RF Front End Assembly While all of these assemblies are used for all of the different frequency range options the Option 544 instruments use a different part number assembly than the Option 503 508 and 526 instruments for each ...

Page 220: ...here it is then directed to the A13 RF Front End assembly There are two different signal paths at the band 0 input of the A13 RF Front End assembly that the signal can be routed through either through the low band preamp and then to the low band 1st mixer or around it and directly to the mixer The low band preamp has a gain of approximately 20 dB The RF input signal is then mixed with the 1st LO f...

Page 221: ...rrect 1st mixer for the current tuned frequency The RF input signal is then mixed with the 1st LO from the A14 LO Synthesizer Assembly to a 1st IF of 322 5 MHz 1st IF 1st LO RF 322 5 MHz The 322 5 MHz 1st IF output exits the A13 RF Front End assembly at J7 Band 2 Signal Path Input Frequencies from 8 3 to 13 6 GHz Option 526 544 RF input frequencies from 8 3 to 13 6 GHz go through the band 2 path R...

Page 222: ...h Band Preamp assembly There are two different signal paths in the A11 RF Switch High Band Preamp that the signal can be routed through either through the high band preamp or around it The high band preamp has a gain of approximately 30 dB The signal is then routed to the A12 YTF Preselector After passing through the A12 YTF Preselector the signal is then routed to the A13 RF Front End assembly Th...

Page 223: ...assembly at J7 Band 5 Signal Path Input Frequencies from 26 4 to 34 5 GHz Option 544 RF input frequencies from 26 4 to 34 5 GHz go through the band 5 path Refer to Chapter 15 Block Diagrams for details The RF input signal entering the instrument through the RF Input connector is routed through both of the instrument s input attenuators A9 A10 The signal is then routed through the SW2 Transfer swit...

Page 224: ... will always be bypassed The output of the transfer switch is then routed to the A11 RF Switch High Band Preamp assembly There are two different signal paths in the A11 RF Switch High Band Preamp that the signal can be routed through either through the high band preamp or around it The high band preamp has a gain of approximately 30 dB The signal is then routed to the A12 YTF Preselector After pas...

Page 225: ...0 GHz and 15 dB up to 44 GHz Control for this assembly comes from the A15 Front End Controller assembly There are two different A11 RF Switch High Band Preamp assemblies used in the N9038A one for instruments with Option 503 508 or 526 and one for instruments with Option 544 The connections to and from the A11 RF Switch High Band Preamp Control assembly are as listed in Table 6 2 and as illustrate...

Page 226: ...vice Guide RF Downconverter Section RF Downconverter Section Description Figure 6 1 A11 RF Switch High Band Preamp Assembly Connections Option 503 508 526 Figure 6 2 A11 RF Switch High Band Preamp Assembly Connections Option 544 ...

Page 227: ...th greater than 40 MHz and an insertion loss of approximately 6 5 dB Control for this assembly comes from the A15 Front End Controller assembly There are two different A12 YTF Preselector assemblies used in the N9038A one for instruments with Option 503 508 or 526 and one for instruments with Option 544 The connections to and from the A12 YTF Preselector assembly are as listed in Table 6 3 and as ...

Page 228: ...38A MXE Service Guide RF Downconverter Section RF Downconverter Section Description Figure 6 3 A12 YTF Preselector Assembly Connections Option 503 508 526 Figure 6 4 A12 YTF Preselector Assembly Connections Option 544 ...

Page 229: ...or certain mixing modes Low Band Path 3 6 GHz low pass filter Switchable preamplifier 1st mixer 1st IF amplifier A13A1 1st IF 5122 5 MHz band pass filter 2nd mixer High Band Path Input amplifier 1st mixers 322 5 MHz IF amplifier Control for this assembly comes from the A15 Front End Controller assembly The connections to and from the A15 Front End Control assembly are as listed in Table 6 4 and Ta...

Page 230: ... 8 to 8 7 GHz J5 Aux LO Output Terminated into 50 Ω N A 3 8 to 8 7 GHz J6 Calibrator Input A16 Reference J705 W18 50 MHz J7 IF Output A15 Front End Control J902 W14 322 5 MHz Serial Prefix MY SG5322 A2 Analog IF J100 W16 322 5 MHz J8 EXT Mixer LO Output Terminated into 50 Ω N A 3 8 to 14 0 GHz J9 High Band Input A12 YTF Output W40 3 6 to 26 5 GHz J10 Low Band 1st IF Output A13A1 BPF Input A13W1 51...

Page 231: ...Keysight N9038A MXE Service Guide 231 RF Downconverter Section RF Downconverter Section Description Figure 6 5 A13 Front End Assembly Connections Option 503 508 526 ...

Page 232: ... into 50 Ω N A 3 8 to 8 7 GHz J4 1st LO Input A14 LO Synthesizer J740 W44 3 8 to 8 7 GHz J5 Aux LO Output Terminated into 50 Ω N A 3 8 to 8 7 GHz J6 Calibrator Input A16 Reference J705 W18 50 MHz J7 IF Output A15 Front End Control J902 W14 322 5 MHz J8 EXT Mixer LO Output Terminated into 50 Ω N A 3 8 to 17 5 GHz J9 High Band Input A12 YTF Output W40 3 6 to 44 0 GHz J10 Low Band 1st IF Output A13A1...

Page 233: ...tch High Band Preamp assembly functionality that can be verified with the procedures in this section They are 1 Assembly Initialization 2 Low Band Signal Path 3 High Band Thru Signal Path 4 High Band Preamp Signal Path Assembly Initialization Before the A11 RF Switch High Band Preamp assembly will function properly it needs to initialize itself when the instrument is turned on and be recognized by...

Page 234: ... assembly be sure that the A15 Front End Control assembly is initializing properly before replacing an A11 RF Switch High Band Switch assembly for not initializing properly Table 6 6 A11 RF Switch High Band Preamp Signal Paths Option 508 526 Signal Path Frequency Range Loss Gain Value Condition Low Band 20 Hz to 3 6 GHz 1 2 dB 20 Hz to 2 5 GHz 1 4 dB 2 5 GHz to 3 6 GHz High Band Thrua 3 6 GHz to 2...

Page 235: ...ly Refer to Chapter 18 Assembly Replacement Procedures for instructions on removing the front frame assembly 3 Refer to Figure 6 7 or Figure 6 8 Disconnect W38 from the A11 RF Switch High Band Preamp assembly Output J2 4 Referring to Figure 6 7 or Figure 6 8 remove W37 by disconnecting it from the A11 RF Switch High Band Preamp assembly Input J1 and the SW2 Output P4 5 Turn the instrument on and a...

Page 236: ...236 Keysight N9038A MXE Service Guide RF Downconverter Section RF Downconverter Section Troubleshooting Figure 6 7 A11 RF Switch High Band Preamp Connections Option 503 508 526 ...

Page 237: ...to the A11 RF switch High Band Preamp assembly Low Band Output J2 9 Tune the spectrum analyzer to 100 MHz with a span of 1 MHz 10 Turn the instrument self alignment routine off by pressing System Alignments Auto Align Off 11 Switch the A11 RF switch High Band Preamp assembly to the low band signal path by pressing FREQ 50 MHz and SPAN Zero Span 12 Verify that the signal amplitude on the spectrum a...

Page 238: ...control lines from the A15 Front End Control assembly are working properly Refer to Chapter 8 Front End Control for instructions on how to verify the control lines 13 Tune the signal generator and spectrum analyzer to any other frequency up to 3 6 GHz and verify that the loss through the low band signal path remains within a few dB of the values outlined in Table 6 6 or Table 6 7 The isolation fro...

Page 239: ...ut J3 18 Tune the spectrum analyzer to 6 GHz with a span of 1 MHz 19 Switch the A11 RF Switch High Band Preamp assembly to the high band signal path by pressing FREQ 6 GHz 20 Verify that the signal amplitude on the spectrum analyzer display is approximately what is expected as outlined in Table 6 6 or Table 6 7 allowing for any additional test cable loss as seen in Figure 6 10 Figure 6 10 A11 RF S...

Page 240: ...ned in Table 6 6 or Table 6 7 22 If the high band thru signal path loss continues to be within the expected values proceed to the High Band Preamp Path verification High Band Preamp Signal Path 23 Tune the signal generator to 6 GHz with an amplitude of 20 dBm 24 Tune the spectrum analyzer to 6 GHz with a span of 1 MHz 25 Switch the A11 RF Switch High Band Preamp assembly to the high band signal pa...

Page 241: ...m the A15 Front End Control assembly are working properly Refer to Chapter 8 Front End Control for instructions on how to verify the control lines 30 Switch the A11 RF Switch High Band Preamp assembly back to the high band thru signal path by pressing AMPTD More Internal Preamp Off 31 Tune the signal generator and spectrum analyzer to any other frequency above 3 6 GHz and repeat step 25 through st...

Page 242: ...ze itself when the instrument is turned on and be recognized by the instrument software To verify that this has happened look at the instrument Hardware Information screen To view this information press System Show Hardware Once you do this you will see a listing of instrument hardware assemblies that are installed The A12 YTF Preselector assembly should identify itself on this list as YIG Tuned F...

Page 243: ... 12 A12 YTF Preselector Status LED Locations When the instrument is first turned on the only LEDs that should be on are DS1 and DS2 DS1 should be on whenever the instrument is turned on as this indicates that the voltage regulator on the YTF is working DS2 will remain on until the assembly has been initialized which occurs during the time the instrument application initializes the hardware After t...

Page 244: ...F Preselector assembly as shown in Figure 6 12 If DS1 is on the 30 volt DC supply to the assembly as well as the 3 3 volt regulator are both fine If DS1 is not on and the instrument has either Option 508 or 526 proceed to Step 2 Otherwise the cause for the low voltage level will need to be determined While this could be caused by a faulty voltage regulator on the A12 YTF Preselector itself or by a...

Page 245: ...E Service Guide 245 RF Downconverter Section RF Downconverter Section Troubleshooting Figure 6 13 A12 YTF Preselector Connector Locations Option 503 508 526 Figure 6 14 A12 YTF Preselector Connector Locations Option 544 ...

Page 246: ...he front frame assembly to the chassis and slide it away from the rest of the instrument but do not disconnect W8 which connects it to the A8 Motherboard assembly Refer to Chapter 18 Assembly Replacement Procedures for instructions on removing the front frame assembly 3 Referring to Figure 6 13 remove W39 by disconnecting it from the A11 RF Switch High Band Preamp assembly Output J3 and the A12 YT...

Page 247: ...peration 10 Tune the spectrum analyzer to 3 65 GHz with a span of 100 MHz 11 Turn the instrument self alignment routine off by pressing System Alignments Auto Align Off 12 Tune the instrument to 3 65 GHz with a span of 0 Hz by pressing FREQ 3 65 GHz and SPAN Zero Span 13 Verify that there is a signal at the center of the spectrum analyzer display The exact level is not important at this point but ...

Page 248: ... needs to be verified See Chapter 8 Front End Control to determine the cause of this failure Table 6 9 A12 YTF Tune Frequency versus Control Voltage Tune Frequency Expected Control Voltage at J2 Pin 1 DC Voltage Across YTF Tune Coil Reference Control DC 3 65 GHz 29 6 Volts 0 4 Volts 10 GHz 25 2 Volts 4 8 Volts 15 GHz 21 7 Volts 8 3 Volts 20 GHz 18 1 Volts 11 9 Volts 26 5 GHz 13 3 Volts 16 7 Volts ...

Page 249: ...the rest of the instrument but do not disconnect W8 which connects it to the A8 Motherboard assembly Refer to Chapter 18 Assembly Replacement Procedures for instructions on removing the front frame assembly 3 Referring to Figure 6 13 or Figure 6 14 remove W39 by disconnecting it from the A11 RF Switch High Band Preamp assembly Output J3 and the A12 YTF Preselector assembly Input 4 Referring to Fig...

Page 250: ...cant at the frequencies that this assembly operates at The passband insertion loss of the A12 YTF Preselector itself should not be greater than 10 dB when properly tuned If the passband insertion loss is greater than expected the cause for this will need to be determined It could be due to a greater loss than normal distorted passband filter shape or incorrect passband centering Passband Filter Sh...

Page 251: ...the passband centering is not aligned properly it can be manually tuned 500 MHz which will help to verify that an adjustment of the filter centering will correct the alignment This can be done by pressing AMPTD Presel Adjust and entering either a positive or negative number to adjust the passband centering by Once an adjustment of this value is made step 14 can be repeated to display the change in...

Page 252: ... Assembly Initialization Before the A13 RF Front End assembly will function properly it needs to initialize itself when the instrument is turned on and be recognized by the instrument software To verify that this has happened look at the instrument Hardware Information screen To view this information press System Show Hardware Once you do this you will see a listing of instrument hardware assembli...

Page 253: ...ocedures for instructions on removing the front frame assembly 3 Referring to Figure 6 17 or Figure 6 18 disconnect W14 from the A13 RF Front End assembly Output J7 Before verifying the functionality of the A13 RF Front End assembly make sure that the 1st LO signal from the A14 LO Synthesizer assembly as well as the 4800 MHz 2nd LO signal from the A16 Reference assembly are both of the correct fre...

Page 254: ...254 Keysight N9038A MXE Service Guide RF Downconverter Section RF Downconverter Section Troubleshooting Figure 6 17 A13 RF Front End Assembly Connections Option 503 508 526 ...

Page 255: ...elf alignment routine off by pressing System Alignments Auto Align Off 8 Tune the instrument to 100 MHz with a span of 0 Hz by pressing FREQ 100 MHz and SPAN Zero Span 9 Referring to Figure 6 17 or Figure 6 18 disconnect W38 from the A13 RF Front End assembly low band Input J2 10 Connect a signal generator to the A13 RF Front End assembly low band Input J2 11 Tune the signal generator to 100 MHz w...

Page 256: ...dure a Referring to Figure 6 17 or Figure 6 18 remove A13W1 and A13W2 from the A13 RF Front End and A13A1 Bandpass Filter assemblies b Connect a signal generator to the A13A1 Bandpass Filter Input A13W1 end c Connect a spectrum analyzer to the A13A1 Bandpass Filter Output A13W2 end d Tune the signal generator to 5 1 GHz with an amplitude of 20 dBm e Tune the spectrum analyzer to a center frequency...

Page 257: ... at 5 1 GHz is approximately 2 dB allowing for any additional test cable loss and the 3 dB bandwidth is at least 100 MHz as shown in Figure 6 20 Replace the A13A1 Bandpass Filter if its shape or insertion loss does not meet these requirements Before replacing an A13 RF Front End assembly for any failure refer to Chapter 8 Front End Control for information on how to verify the control signals to it...

Page 258: ...litude on the spectrum analyzer display is approximately 8 dBm 22 dB gain allowing for any additional test cable loss as seen in Figure 6 21 Figure 6 21 A13 RF Front End Low Band Preamp Signal Path 3 If the signal level is incorrect the most likely cause of the problem is the A13 RF Front End assembly itself Before replacing an A13 RF Front End assembly for any failure refer to Chapter 8 Front End...

Page 259: ...nnect a spectrum analyzer to the A13 RF Front End assembly Output J7 5 Tune the spectrum analyzer to 322 5 MHz with a span of 10 MHz 6 Referring to Figure 6 17 or Figure 6 18 disconnect W40 from the A13 RF Front End assembly high band Input J9 7 Connect a signal generator to the A13 RF Front End assembly high band Input J9 using a cable designed for use at this frequency 8 Tune the signal generato...

Page 260: ... 22 A13 RF Front End High Band Signal Path 13 If the signal level is incorrect the most likely cause of the problem is the A13 RF Front End assembly itself Before replacing an A13 RF Front End assembly for any failure refer to Chapter 8 Front End Control for information on how to verify the control signals to it ...

Page 261: ...ation is found in this chapter A14 L O Synthesizer Assembly Description on page 262 A14 L O Synthesizer Purpose on page 262 A14 L O Synthesizer Description on page 262 A14 L O Synthesizer Assembly Connections on page 263 A14 L O Synthesizer Assembly Troubleshooting on page 264 Assembly Status LEDs on page 265 Frequency and Amplitude of the 1st LO Output on page 266 ...

Page 262: ...e signal that is generated and phase locked to the 10 MHz reference on the A16 Reference Assembly The quality of the 4800 MHz reference signal phase lock loop the 1st LO phase lock loop as well as the 10 MHz internal reference signal all have a direct bearing on the overall frequency stability of the instrument Users can also provide their own external reference signal to be used instead of the in...

Page 263: ...r assembly are as listed in Table 7 1 and as illustrated in Figure 7 1 Figure 7 1 A14 L O Synthesizer Assembly Connections Table 7 1 A14 L O Synthesizer Assembly Signals Port Description To From Cable J10 Not Used n a n a J100 Bias Control A8 Motherboard J101 n a J200 4800 MHz Reference Signal A16 Reference J703 W41 J740 1st LO Output A13 Front End J4 W44 J741 JTAG Programming n a n a ...

Page 264: ...the instrument Hardware Information screen To view this information press System Show Hardware Once you do this you will see a listing of instrument hardware assemblies that are installed The A14 LO Synthesizer assembly should identify itself on this list as LO Synthesizer If this assembly does not identify itself the cause for this will need to be determined before any other troubleshooting is pe...

Page 265: ...e LEDs are on see Table 7 2 for a possible cause Table 7 2 A14 L O Synthesizer Assembly Status LEDs LED Description Cause for Fault DS1 FPGA Programming Done FPGA code is not uploading from assembly EEROM Try reprogramming FPGA by using the FPGA Synchronization instructions in Chapter 19 Post Repair Procedures If this LED is on the state of all other LEDs can be ignored DS2 Cycle Slipped If DS3 is...

Page 266: ... analyzer to J740 for signal frequency and amplitude verification 4 Turn the instrument on and allow it to complete its boot up process 5 Tune the instrument to a Center Frequency of 50 MHz with a Span of 0 Hz by pressing Freq 50 MHz and SPAN Zero Span 6 Verify that the frequency of the 1st LO signal at J740 is 5172 5 MHz and that the amplitude is between 13 and 18 dBm as shown in Figure 7 3 Befor...

Page 267: ...ency and amplitude level across its tuning range If there is a problem with the frequency or amplitude of the 1st LO output signal and the 4800 MHz Reference input signal is known to be good See Chapter 9 Reference Assembly the A14 LO Synthesizer board itself is most likely at fault Table 7 3 Instrument Input versus 1st LO Tune Frequency Instrument Input Frequency 1st LO Frequency 50 MHz 5 172 5 M...

Page 268: ...268 Keysight N9038A MXE Service Guide L O Synthesizer A14 L O Synthesizer Assembly Troubleshooting ...

Page 269: ... page 271 A15 Front End Control Assembly Troubleshooting on page 274 Assembly Control Verification Option 503 508 526 only on page 275 A9 Input Attenuator A Control Option 503 508 526 only on page 277 A10 Input Attenuator B Control Option 503 508 526 only on page 281 A11 RF Switch High Band Preamp Control Option 503 508 526 only on page 284 A12 YTF Preselector Control Option 508 526 only on page 2...

Page 270: ...assembly also has the ability to route the A13 IF output signal to either the A2 Analog IF assembly or the A3 Digital IF assembly A25 Wideband Analog IF if Option B85 is installed It also provides the switching of the IF to the rear panel AUX IF OUT connector Option CR3 only A15 Front End Control Assembly Description The following RF assemblies are controlled by the A15 Front End Control assembly ...

Page 271: ...Signals Port Description To From Cable J100 Bias Control A8 Motherboard J111 n a J102 Front End Assembly Control A13 Front End J12 W5 J300 YTF Preselector Control A12 YTF J1 W12 J301 Not Used n a n a J302 Not Used n a n a J700 RF Switch High Band Preamp Control A11 RF Switch J4 W4 J800 Attenuator Control A9 A10 Control W3 J801 Not Used n a n a J802 Not Used n a n a J900 Narrowband IF Output A2 Ana...

Page 272: ...272 Keysight N9038A MXE Service Guide Front End Control A15 Front End Control Description Figure 8 1 A15 Enhanced Front End Control Assembly Connections ...

Page 273: ...embly Signals Serial Prefix MY SG5322 Port Description To From Cable J100 Bias Control A8 Motherboard J111 n a J103 RF Switch High Band Preamp Control A11 RF Switch J4 W4 J104 Front End Assembly Control A13 Front End J12 W5 J200 JTAG Programming n a n a J300 Not Used n a n a J301 YTF Preselector Control A12 YTF J1 W12 J302 Not Used n a n a J800 Not Used n a n a J801 Attenuator Control A9 A10 Contr...

Page 274: ...initialize itself when the instrument is turned on and be recognized by the instrument software The first step in verifying that this has happened is to look at the instrument Hardware Information screen To view this information press System Show Hardware Once you do this you will see a listing of instrument hardware assemblies that are installed The A15 Front End Control assembly should identify ...

Page 275: ...truments that have Option 544 due to the differences in the front end assemblies used Table 8 3 Contents of Kit Part Number N9020 60005 Keysight Part Number Description E4410 60115 Front End Control Test Board Assembly E4410 60156 A13 Front End Assembly Control Cable E4410 60157 A9 A10 Input Attenuator Control Cable E4410 60158 A12 YTF Preselector Control Cable E4410 60160 A11 RF Switch High Band ...

Page 276: ...276 Keysight N9038A MXE Service Guide Front End Control A15 Front End Control Assembly Troubleshooting Figure 8 3 Front End Control Test Board ...

Page 277: ...o Chapter 5 RF Preselector Section for further troubleshooting information on the A9 Input Attenuator A itself This section will verify the control signals from the A15 Front End Control assembly to the A9 Input Attenuator A As can be seen in Figure 8 4 there are four different controls for the A9 Input Attenuator A 1 RF Input Calibrator Select 2 AC DC Coupling Select 3 2 dB Select A 4 2 dB Select...

Page 278: ...9 A10 Input Attenuator Control cable from J801 to the Front End Control Test board J3 J4 as shown in Figure 8 3 4 Place the Front End Control Test board on a non conductive surface 5 Turn the instrument on and allow it to complete its boot up process ignoring any alignment failures 6 Turn the instrument auto alignment routine off by pressing System Alignments Auto Align Off 7 Tune the instrument t...

Page 279: ...e status of the A9 Input Attenuator A LEDs on the Front End Control Test board are as shown in Table 8 4 for the RF Coupling DC instrument setting If the state of the status LEDs is correct proceed to the next step If not there is most likely a problem with the A15 Front End Control assembly 13 Change the Mechanical Attenuator setting to 2 dB by pressing AMPTD Attenuation Mech Atten 2 dB 14 Verify...

Page 280: ... as shown in Table 8 4 for the Mechanical Attenuator 4 dB instrument setting If the state of the status LEDs is correct proceed to the next step If not there is most likely a problem with the A15 Front End Control assembly 17 If no trouble has been found with the control logic coming from the A15 Front End Control assembly yet there is still a problem with the A9 Input Attenuator A refer to Chapte...

Page 281: ...properly refer to Chapter 5 RF Preselector Section for further troubleshooting information on the A10 Input Attenuator B itself This section will verify the control signals from the A15 Front End Control assembly to the A10 Input Attenuator B As can be seen in Figure 8 7 there are four different controls for the A10 Input Attenuator 1 6 dB Step 2 10 dB Step 3 20 dB Step 4 30 dB Step The status of ...

Page 282: ... the instrument to a Center Frequency of 50 MHz with a Span of 0 Hz by pressing FREQ 50 MHz and SPAN Zero Span 8 Verify that the status of the A10 Input Attenuator B LEDs on the Front End Control Test board are as shown in Table 8 5 for the Mode Preset instrument setting If the state of the status LEDs is correct proceed to the next step If not there is most likely a problem with the A15 Front End...

Page 283: ... assembly 13 Change the Mechanical Attenuator setting to 30 dB by pressing AMPTD Attenuation Mech Atten 30 dB 14 Verify that the status of the A10 Input Attenuator B LEDs on the Front End Control Test board are as shown in Table 8 5 for the Mechanical Attenuator 30 dB instrument setting If the state of the status LEDs is correct proceed to the next step If not there is most likely a problem with t...

Page 284: ...Downconverter Section for further troubleshooting information on the A11 RF Switch High Band Preamp assembly itself This section will verify the control signals from the A15 Front End Control assembly to the A11 RF Switch High Band Preamp assembly As can be seen in Figure 8 9 in addition to the bias and control signals there are also two controls for the A11 RF Switch High Band Preamp assembly 1 S...

Page 285: ...embly Replacement Procedures for instructions on removing these covers 2 Disconnect cable W4 from J103 as shown in Figure 8 6 3 Connect the A11 RF Switch High Band Preamp Control cable from J103 to the Front End Control Test board J2 as shown in Figure 8 3 4 Place the Front End Control Test board on a non conductive surface 5 Turn the instrument on and allow it to complete its boot up process igno...

Page 286: ... Front End Control assembly is working properly by pressing System Show Hardware If there is a Low Band Switch entry on the Hardware Information screen proceed to the next step If not there is most likely a problem with the A15 Front End Control assembly 9 Tune the instrument to a frequency of 1 GHz with a span of 0 Hz by pressing FREQ 1 GHz and SPAN Zero Span Table 8 6 A11 RF Switch High Band Swi...

Page 287: ... 13 Turn off the RF Preselector by pressing Input Output RF Input RF Preselector Off 14 Turn the High Band Preamp on by pressing AMPTD More Internal Preamp Full Range 15 Verify that the voltage levels of test points In1A In1B In2A and In2B match what is outlined in Table 8 7 for a Frequency of 4 GHz w Preamp 0 5V If the test point voltages are correct proceed to the next step If not there is most ...

Page 288: ...section will verify the control signals from the A15 Front End Control assembly to the A12 YTF Preselector assembly There are only three controls for the A12 YTF Preselector 1 Serial Communication for Assembly Identification 2 Supply Voltage for Serial Communications 3 Main Coil Current The status of the supply voltage and main coil current can be measured on the Front End Control Test board assem...

Page 289: ...from the A15 Front End Control assembly at J31 on the Front End Control Test board as shown in Figure 8 11 If the test point voltage measures 29 5V 0 5V proceed to the next step If not there is most likely a problem with the A15 Front End Control assembly While LED DS21 on the Front End Control Test board is only an indication that the voltage regulator for the serial communication on the test boa...

Page 290: ...e as outlined below and then re check the main coil current levels 12 Repeat step 9 through step 11 for the rest of the Frequency values listed in Table 8 8 13 If no trouble has been found with the main coil current coming from the A15 Front End Control assembly yet there is still a problem with the A12 YTF Preselector assembly refer to Chapter 6 RF Downconverter Section for further troubleshootin...

Page 291: ...rm the A12 YTF Preselector alignment routine 1 If the Front End Control Test board was being used just prior to the running of this routine turn the instrument off disconnect the Front End Control Test board from the instrument and plug all of the instrument internal cables back into the A15 Front End Control assembly 2 Then turn the instrument on and allow it to complete its boot up process 3 Run...

Page 292: ...y itself This section will verify the control signals from the A15 Front End Control assembly to the A13 RF Front End assembly There are five controls for the A13 RF Front End assembly 1 Supply Voltages 2 Serial Communication for Assembly Identification 3 Low Band Preamp Control 4 Frequency Band Selection 5 Amplifier Bias The status of the control lines for A13 RF Front End assembly can be measure...

Page 293: ...nt End Control Test board J1 as shown in Figure 8 3 4 Place the Front End Control Test board on a non conductive surface 5 Turn the instrument on and allow it to complete its boot up process ignoring any alignment failures 6 Turn the instrument auto alignment routine off by pressing System Alignments Auto Align Off 7 Referring to Figure 8 12 verify that all four of the power supply voltage LEDs on...

Page 294: ...e level of the Test Points listed in Table 8 10 for the Internal Preamp Off condition If the test point voltages are correct 0 5V proceed to the next step If not there is most likely a problem with the A15 Front End Control assembly Table 8 9 A13 RF Front End Assembly Front End Test Board LEDs LED Power Supply Voltage DS1 15V DS2 5 2V DS3 15V DS4 9V The Front End Control Test board has the circuit...

Page 295: ... of 1 GHz If the test point voltages are correct 0 5V proceed to the next step If not there is most likely a problem with the A15 Front End Control assembly 17 Repeat step 15 and step 16 for the rest of the Frequency values listed in Table 8 11 18 Tune the instrument to a frequency of 20 GHz 1 GHz for Option 503 and 508 by pressing FREQ 20 GHz Table 8 10 A13 RF Front End Assembly Preamp Control Vo...

Page 296: ...tion on the A13 RF Front End assembly itself Table 8 12 A13 RF Front End Assembly Bias Voltages Test Point Descriptions Voltage Tolerance VCC1 LO Amp Bias 5 0V 0 5V VCC2 LO Amp Bias 5 0V 0 5V VCC3 Low Band Preamp Bias 8 0V 0 5V VCC4 LO Amp Bias 5 0V 0 5V VCC5 Output IF Amp Bias 5 0V 0 5V VCC6 Aux LO Amp Bias Future Use N A VEE6 Aux LO Amp Bias Future Use N A VLO1 LO Power Level Control 3 0 to 5 0V...

Page 297: ...e instrument uses the signal path to the A3 Digital IF assembly So this procedure will verify the correct signal routing to the A2 Analog IF output the A25 Wideband Analog IF output if option B85 is installed and the rear panel AUX IF output When the IF signal is routed to the A2 Analog IF assembly the frequency of the signal is 322 5 MHz when it is routed to the A3 Digital IF assembly it is 250 M...

Page 298: ...lyzer 4 Turn the instrument auto alignment routine off by pressing System Alignments Auto Align Off 5 Turn the 50 MHz Calibrator signal on by pressing Input Output RF Calibrator 50 MHz 6 Tune the instrument to a frequency of 50 MHz with a span of 0 Hz by pressing FREQ Channel Center Freq 50 MHz and SPAN X Scale Zero Span 7 Set the input attenuation to 10 dB by pressing AMPTD Y Scale Attenuation 10...

Page 299: ...rect level and the output is not the A15 Enhanced Front End Control Assembly has a problem If the input signal is not at the correct level see Chapter 6 RF Downconverter Section for instructions on how to determine the cause of this problem 12 Reconnect W16 to A15J 900 as shown in Figure 8 6 The 300 MHz IF signal routing for the A25 Wideband Analog IF output of the A15 Enhanced Front End Control b...

Page 300: ... off by pressing Input Output RF Input RF Preselector Off 5 Turn the instrument auto alignment routine off by pressing System Alignments Auto Align Off 6 Switch the instrument into the IQ Analyzer mode by pressing Mode IQ Analyzer Basic 7 Turn the 50 MHz Calibrator signal on by pressing Input Output RF Calibrator 50 MHz 8 Tune the instrument to a frequency of 50 MHz with a span of 0 Hz by pressing...

Page 301: ...s not correct measure the input signal level coming to A15 J902 out of W14 as shown in Figure 8 6 It should be approximately 6 dB higher than the level shown in Figure 8 16 If the input signal is at the correct level and the output is not the A15 Enhanced Front End Control Assembly has a problem If the input signal is not at the correct level see Chapter 6 RF Downconverter Section for instructions...

Page 302: ...Path In that case the frequency of the output will be 300 MHz The following procedure will verify the AUX IF OUT switching 1 Turn the instrument on and allow it to complete its boot up process 2 Switch the instrument into the Spectrum Analyzer mode by pressing Mode Spectrum Analyzer 3 Turn the instrument auto alignment routine off by pressing System Alignments Auto Align Off 4 Turn the 50 MHz Cali...

Page 303: ...and allow it to complete its boot up process 12 Switch the instrument into the Spectrum Analyzer mode by pressing Mode Spectrum Analyzer 13 Turn the instrument auto alignment routine off by pressing System Alignments Auto Align Off 14 Turn the 50 MHz Calibrator signal on by pressing Input Output RF Calibrator 50 MHz 15 Tune the instrument to a frequency of 50 MHz with a span of 0 Hz by pressing FR...

Page 304: ...nt replace W22 21 If the level at A15 J1100 is not correct measure the input signal level coming to A15 J902 out of W14 as shown in Figure 8 6 It should be approximately 10 dB higher than the level shown in Figure 8 17 If the input signal is at the correct level and the output is not the A15 Enhanced Front End Control Assembly has a problem If the input signal is not at the correct level see Chapt...

Page 305: ...Description on page 306 A16 Reference Assembly Troubleshooting on page 309 Assembly Status LEDs on page 309 Assembly Output Signal Frequency Amplitude Verification on page 311 Digital IF Reference 10 MHz on page 312 50 MHz Calibrator on page 313 E Cal Reference on page 314 3rd LO on page 316 4 8 GHz Calibrator on page 317 1st LO Reference on page 318 2nd LO Low Band on page 319 Each of the followi...

Page 306: ...l 10 MHz reference located on the A16 Main board 2 An externally provided reference such as a house standard or the reference from another instrument or a base transceiver system The external reference can be any RF signal in the range of 1 MHz to 50 MHz 5 dBm to 10 dBm If an external reference signal is within 200 Hz of the specified external reference frequency and Freq Ref In is set to Sense th...

Page 307: ...1 4 8 GHz J704 External Reference Input Rear Panel Ext Ref In W21 1 50 MHz J705 E Cal Signal A13 Front End J6 W18 50 MHz J706 Not Used n a n a n a J707 Not Used n a n a n a J710 Digital IF Reference n a n a n a Serial Prefix MY SG5322 A3 Digital IF J14 W20 10 MHz J711 3rd LO Signal A2 Analog IF J300 W19 300 MHz J714 Not Used n a n a n a J715 Not Used n a n a n a J716 Digital IF Reference A3 High P...

Page 308: ...308 Keysight N9038A MXE Service Guide Reference Assembly A16 Reference Assembly Description Figure 9 1 A16 Reference Board Assembly Connections ...

Page 309: ...erence assembly should identify itself on this list as Reference If this assembly does not identify itself the cause for this will need to be determined before any other troubleshooting is performed The most probable causes for this type of a problem would be FPGA Code on the assembly is corrupt Solution Reload the FPGA code See FPGA Synchronization on page 655 An instrument power supply voltage i...

Page 310: ...f All Locked A16DS7 Green 100 MHz PLL Locked On Locked Off Unlocked A16DS8 Green 100 MHz VCXO Status On Yes Off No A16DS9 Green 10 MHz OCXO Status On On Off Off A16DS10 Green 15V Standby Supply Status On On Off Off A16A1DS2 Red Frequency Low On Frequency is Low 2 Blinks 2 4 GHz Ref ALC Unleveled 3 Blinks 300 MHz Ref ALC Unleveled Off Normal A16A1DS3 Red Frequency High On Frequency is High 2 Blinks...

Page 311: ...ng these covers The location of the connection for each of the A16 Reference assembly signals can be found in Figure 9 3 and the description frequency and amplitude of each can be found in Table 9 3 Figure 9 3 A16 Reference Board Assembly Cable Locations Table 9 3 A16 Reference Assembly Outputs Signal Signal Location Frequency MHz Power Level dBm Digital IF Reference J710 10 MHz 3 dBm 50 MHz Calib...

Page 312: ...erence 10 MHz 1 Disconnect Cable W20 from J710 as shown in Figure 9 3 2 Verify with a spectrum analyzer that the frequency and amplitude of the Digital IF Reference signal at J710 is equal to that specified for it in Table 9 3 as shown in Figure 9 4 Figure 9 4 A16 Reference Assembly Digital IF Reference 10 MHz ...

Page 313: ...shown in Figure 9 3 2 Turn the 50 MHz Calibrator signal on by pressing Input Output RF Calibrator 50 MHz on the instrument 3 Verify with a spectrum analyzer that the frequency and amplitude of the 50 MHz Calibrator signal at J701 is equal to that specified for it in Table 9 3 as shown in Figure 9 5 Figure 9 5 A16 Reference Assembly 50 MHz Calibrator ...

Page 314: ...n Now All on the instrument 3 Verify with a spectrum analyzer that the frequency and amplitude of the E Cal Reference signal at J705 is equal to that specified for it in Table 9 3 as shown in Figure 9 6 Figure 9 6 A16 Reference Assembly E Cal Reference The 50 MHz E Cal signal is only used during an instrument alignment and will not stay on for any length of time To capture the signal you will need...

Page 315: ...ce 100 MHz 1 Disconnect Cable W20 from A16J716 as shown in Figure 9 3 2 Verify with a spectrum analyzer that the frequency and amplitude of the Digital IF Reference signal at A16J716 is equal to that specified for it in Table 9 3 as shown in Figure 9 7 Figure 9 7 A16 Reference Assembly Digital IF Reference 100 MHz ...

Page 316: ...leshooting 3rd LO 1 Disconnect Cable W19 from J711 as shown in Figure 9 3 2 Verify with a spectrum analyzer that the frequency and amplitude of the 3rd LO signal at J711 is equal to that specified for it in Table 9 3 as shown in Figure 9 8 Figure 9 8 A16 Reference Assembly 3rd LO Output ...

Page 317: ...hown in Figure 9 3 2 Turn the 4 8 GHz Calibrator signal on by pressing Input Output RF Calibrator 4 8 GHz on the instrument 3 Verify with a spectrum analyzer that the frequency and amplitude of the 4 8 GHz Calibrator signal at J701 is equal to that specified for it in Table 9 3 as shown in Figure 9 9 Figure 9 9 A16 Reference Assembly 4 8 GHz Calibrator ...

Page 318: ...t LO Reference 1 Disconnect Cable W41 from J703 as shown in Figure 9 3 2 Verify with a spectrum analyzer that the frequency and amplitude of the 1st LO Reference signal at J703 is equal to that specified for it in Table 9 3 as shown in Figure 9 10 Figure 9 10 A16 Reference Assembly 1st LO Reference ...

Page 319: ...2nd LO Low Band 1 Disconnect Cable W42 from J702 as shown in Figure 9 3 2 Verify with a spectrum analyzer that the frequency and amplitude of the 2nd LO Low Band signal at J702 is equal to that specified for it in Table 9 3 as shown in Figure 9 11 Figure 9 11 A16 Reference Assembly 2nd LO Low Band ...

Page 320: ...at A16J718 is equal to that specified for it in Table 9 3 as shown in Figure 9 12 Figure 9 12 A16 Reference Assembly 2nd LO Low Band If any of the signals that are generated on the A16 Reference assembly are not of the proper frequency or amplitude the most probable cause of the problem is likely to be the A16 Reference assembly itself as long as the A6 Power Supply assembly is functioning properl...

Page 321: ...mblies in the IF section signal path This following sections are found in this chapter A2 Analog I F Assembly Description on page 322 A2 Analog I F Troubleshooting on page 326 A3 Digital I F Assembly Description on page 337 A3 Digital I F Troubleshooting on page 342 Each of the following sections first describes how the assembly works then gives information to help you troubleshoot the assembly Ea...

Page 322: ...ion used Mode applied This assembly also contains the burst carrier trigger circuitry The output of the assembly is a filtered 22 5 MHz signal that goes to the A3 Digital I F Assembly A2 Analog IF Assembly Description A 322 5 MHz input signal is received from the A13 RF Front End assembly The signal then goes through a band pass filter centered at 322 5 MHz with a 25 MHz bandwidth A cal comb signa...

Page 323: ...e signal is attenuated by 20 dB if necessary A limiter is used to reduce amplitude variation effects Post Down Conversion Amplification and Prefiltering The 22 5 MHz IF goes through a fixed gain amplifier Then prefilters are switched in and out The signal then goes through a variable gain amplifier The prefilters provide four single pole filters to limit the bandwidth of the signal reaching the AD...

Page 324: ...rovide an additional 2 dB of sensitivity Burst Carrier Trigger The Burst Carrier Trigger detector provides a binary signal to be used as a trigger based on the presence of an RF input signal or not The variable gain amplifiers drive a detector and its output drives a comparator which generates the trigger signal Overall A2 Analog IF Assembly Resolution Bandwidth In Spectrum Analyzer mode in the Sw...

Page 325: ...0 1 A2 Analog IF Assembly Connections Table 10 3 A2 Analog IF Assembly Signals Port Description To From Cable Frequency J100 IF Input A15 Front End Control J900 W16 322 5 MHz J300 LO Input A16 Reference J711 W19 300 MHz J401 Not Used n a n a n a J600 Not Used n a n a n a J601 IF Output A3 Digital IF J19 W17 22 5 MHz J800 JTAG Programming n a n a n a J810 Not Used n a n a n a J820 Bias and Control ...

Page 326: ...s An instrument power supply voltage is not operating properly Solution Verify all instrument power supply voltages See Chapter 12 Power Supply Midplane A2 Analog IF assembly is defective Solution Replace the A2 Analog IF assembly Signal Path Verification While this assembly does create the 22 5 MHz IF signal it does so with two inputs that come from other assemblies These two input signals are 32...

Page 327: ...uned to 50 MHz A2 Analog IF 25 MHz Filter Path Option B25 Only This will verify the filter path switching and shape for the 25 MHz filter path with the use of a signal generator tuned to 50 MHz A2 Analog IF Filter Path Switching 1 Remove the instrument dress cover MP24 and top brace MP10 Refer to Chapter 18 Assembly Replacement Procedures for instructions on removing these covers 2 Turn the instru...

Page 328: ...brator signal on by pressing Input Output RF Calibrator 50 MHz 7 Tune the instrument to the calibrator frequency with a span of 0 Hz by pressing FREQ 50 MHz and Span Zero Span 8 Lock the instrument input attenuation to 10 dB by pressing AMPTD Attenuation Mech Atten 10 dB Man 9 Set the instrument resolution bandwidth to 3 MHz by pressing BW 3 MHz 10 Set the step gain to Low by pressing Meas Setup M...

Page 329: ...ubleshooting Figure 10 3 A2 Analog IF 22 5 MHz IF Output with Low Gain 12 Set the step gain to High by pressing Meas Setup More Swept IF Gain High Gain 13 Verify that the 22 5 MHz IF output from the A2 Analog IF assembly measures between 11 and 19 dBm as shown in Figure 10 4 ...

Page 330: ...ess cover MP24 and top brace MP10 Refer to Chapter 18 Assembly Replacement Procedures for instructions on removing these covers 2 Turn the instrument on and allow it to complete its boot up process Table 10 4 A2 Analog IF Filter Path Switching Filter Path Resolution Bandwidth 12 MHz 3 MHz 1 MHz 300 kHz 300 kHz 100 kHz 75 kHz 10 kHz 10 kHz 3 kHz Since the A2 Analog IF assembly is not in an easily a...

Page 331: ... Mech Atten 10 dB Man 8 Connect a sine wave signal generator to the instrument input 9 Tune the signal generator to 50 MHz with an amplitude of 20 dBm 10 Set the instrument resolution bandwidth to 3 MHz by pressing BW 3 MHz 11 Set the spectrum analyzer span to 40 MHz 12 Set the spectrum analyzer such that trace 1 is in Clear Write and trace 2 is in Maxhold 13 Vary the frequency of the signal gener...

Page 332: ...mbly is most likely at fault Figure 10 5 A2 Analog IF 12 MHz Filter Path Passband Shape Table 10 5 A2 Analog IF Filter Path Selection Filter Path Resolution Bandwidth Spectrum Analyzer Span Expected Filter Shape 12 MHz 3 MHz 40 MHz Figure 10 5 1 MHz 300 kHz 5 MHz Figure 10 6 300 kHz 100 kHz 1 MHz Figure 10 7 75 kHz 10 kHz 500 kHz Figure 10 8 10 kHz 3 kHz 50 kHz Figure 10 9 ...

Page 333: ...eysight N9038A MXE Service Guide 333 Analog Digital IF A2 Analog I F Troubleshooting Figure 10 6 A2 Analog IF 1 MHz Filter Path Passband Shape Figure 10 7 A2 Analog IF 300 kHz Filter Path Passband Shape ...

Page 334: ...34 Keysight N9038A MXE Service Guide Analog Digital IF A2 Analog I F Troubleshooting Figure 10 8 A2 Analog IF 75 kHz Filter Path Passband Shape Figure 10 9 A2 Analog IF 10 kHz Filter Path Passband Shape ...

Page 335: ... mode by pressing Mode IQ Analyzer 6 Turn the instrument self alignment routine off by pressing System Alignments Auto Align Off 7 Tune the instrument to a center frequency 50 MHz pressing FREQ 50 MHz 8 Connect a sine wave signal generator to the instrument input 9 Tune the signal generator to 50 MHz with an amplitude of 20 dBm 10 Verify that the instrument resolution bandwidth is set to 25 MHz by...

Page 336: ...336 Keysight N9038A MXE Service Guide Analog Digital IF A2 Analog I F Troubleshooting Figure 10 10 A2 Analog IF 25 MHz Filter Path Passband Shape ...

Page 337: ...time domain continuous data into I Q in phase and quadrature signals before sending the data to the A4 CPU assembly for further processing and front panel display The A3 Digital IF assembly performs the following main functions Digitizes the final 22 5 MHz Intermediate Frequency 14 bit ADC with a 90 MHz sample rate DSP for standard spectrum analysis Capture memory for complex signals Noise Source ...

Page 338: ...the instrument The trigger inputs each allow trigger levels to be set from 5 to 5 volts using the control DAC The circuits have relatively high input impedance The trigger outputs have 50 Ω source impedance with TTL drive levels into no load Control DAC The control DAC is used to set trigger levels and the gain of the reconstruction system All three outputs can be adjusted from 2 5 to 2 5 volts Sa...

Page 339: ...digital ground referenced signals to analog ground at the rear panel A3 Digital IF Assembly Connections The connections to and from the A3 Digital IF assembly are as listed in Table 10 6 as illustrated in Figure 10 11 and Figure 10 12 Table 10 6 A3 Digital IF Assembly Signals Port Description To From Cable Frequency J4 Digital Bus Not Available n a n a J5 Analog Out Rear Panel n a n a J6 Trigger 2...

Page 340: ...g IF J820 W7 n a J22 JTAG Programming n a n a n a J23 JTAG Programming n a n a n a J25 SDRAM Connection SDRAM DIMM n a n a P1 Analog Card Cage A8 Motherboard J11 n a n a P2 PCI Card Cage A8 Motherboard J12 n a n a a IF Input comes from A25 Wideband Analog IF J102 if instrument has Option B85 Table 10 6 A3 Digital IF Assembly Signals Port Description To From Cable Frequency ...

Page 341: ...Keysight N9038A MXE Service Guide 341 Analog Digital IF A3 Digital I F Assembly Description Figure 10 12 A3 Digital IF Assembly Connections Bottom ...

Page 342: ...strument hardware assemblies that are installed The A3 Digital IF assembly should identify itself on this list as Digital IF If this assembly does not identify itself the cause for this will need to be determined before any other troubleshooting is performed The most probable causes for this type of a problem would be FPGA Code on the assembly is corrupt Solution Reload the FPGA code See FPGA Sync...

Page 343: ...eference functions The functionality of the following functions will be covered in this chapter 22 5 MHz IF Signal Processing 10 MHz Reference Output Trigger Outputs Trigger Inputs Analog Output Option YAS required Noise Source Output Optional N9069A software required Smart Noise Source Interface Optional N9069A software required Other than the 22 5 MHz IF input signal these inputs and outputs can...

Page 344: ... Assembly Before looking for a fault on the A3 Digital IF assembly be sure to verify that both of these signals are of the correct frequency and amplitude Refer to the Analog IF section earlier in this chapter and Chapter 9 Reference Assembly for detailed information on how to verify the frequency and amplitude of these signals If both of these signals are of the correct frequency and amplitude an...

Page 345: ...to the 10 MHz Out on the rear panel of the instrument as illustrated in Figure 10 13 2 Tune the spectrum analyzer Center Frequency to 10 MHz with a Span of 10 MHz 3 Verify that the 10 MHz Reference Output frequency is accurate and that the amplitude is at least 0 dBm as shown in Figure 10 14 Figure 10 14 A3 Digital IF 10 MHz Reference Output ...

Page 346: ...nment routine off by pressing System Alignments Auto Align Off 4 Reduce the instrument span to 100 MHz by pressing Span 100 MHz 5 Verify that the Trigger 1 Out is configured for Sweeping by pressing Input Output More Output Config Trig 1 Out Sweeping HSWP 6 Verify that the there is a signal on the oscilloscope screen who s voltage and width resembles that shown in Figure 10 15 Figure 10 15 A3 Digi...

Page 347: ...od of 1 sec and a pulse width of 500 µs 3 Preset the instrument external trigger settings by pressing Mode Preset 4 Tune the instrument to a span of 100 MHz by pressing Span 100 MHz The sweeptime should now be 1 ms 5 Change the instrument trigger to Trigger 1 In by pressing Trigger External 1 6 Visually verify that the instrument is now sweeping once per second instead of the visually countless sw...

Page 348: ...ignments Auto Align Off 4 Turn the internal 50 MHz Calibrator signal on by pressing Input Output RF Calibrator 50 MHz 5 Tune the instrument to the calibrator frequency with a span of 1 MHz by pressing FREQ 50 MHz and Span 1 MHz 6 Bring the calibrator signal to the top of the instrument display by pressing Peak Search Marker Mkr Ref Lvl 7 Change the instrument amplitude scale to linear by pressing ...

Page 349: ...by pressing Input Output More Output Config Analog Out Screen Video 11 Verify that the peak of the analog output has an amplitude of approximately 1 volt and resembles that shown in Figure 10 17 Figure 10 17 A3 Digital IF Analog Output 12 When finished turn the instrument self alignment routine back on by pressing System Alignments Auto Align Normal ...

Page 350: ...surement personality by pressing Mode Noise Figure 4 Since the Noise Source output will only work when there is nothing connected to the Smart Noise Source output disconnect anything that might be connected to it as illustrated in Figure 10 13 5 Reset the Noise Figure mode to its default settings by pressing Mode Setup Restore Mode Defaults 6 Verify that the there is a signal on the oscilloscope s...

Page 351: ...e Figure measurement personality by pressing Mode Noise Figure 3 Reset the Noise Figure mode to its default settings by pressing Mode Setup Restore Mode Defaults 4 Verify that there is no Smart Noise Model or Serial Number in the instrument by pressing Meas Setup ENR Meas Table The Serial and Model ID softkey labels should be blank 5 Verify that the current ENR Meas Table is blank by pressing Meas...

Page 352: ...rial number and ENR data 7 Verify that the correct model and serial numbers from the Smart Noise Source used are now displayed on the corresponding instrument softkeys as shown in Figure 10 19 by pressing Meas Setup ENR Meas Table Figure 10 19 A3 Digital IF Smart Noise Source Model and Serial Numbers 8 Verify that the ENR Meas Table is now populated with the data from the Smart Noise Source as ill...

Page 353: ...Keysight N9038A MXE Service Guide 353 Analog Digital IF A3 Digital I F Troubleshooting Figure 10 20 A3 Digital IF Smart Noise Source ENR Data ...

Page 354: ...354 Keysight N9038A MXE Service Guide Analog Digital IF A3 Digital I F Troubleshooting ...

Page 355: ...in this chapter A4 Processor Assembly Description on page 356 A4 Processor Board Assembly Troubleshooting on page 359 A5 Disk Drive on page 360 Troubleshooting software related issues on page 362 Reloading the Instrument Application Software on page 363 Disk Drive Recovery Process on page 364 Replacing the instrument disk drive on page 366 Each section first describes how the assembly works then g...

Page 356: ...mbly to the replacement assembly there is typically no need to replace them together The A5 Disk Drive is field replaceable See Chapter 17 Replaceable Parts for the correct replacement part number A4A1 Disk Drive Interface Board There may be situations where the A5 disk drive must be removed and inserted many times such as in a security sensitive environment Therefore the A4A1 Disk Drive Interface...

Page 357: ...o drive the two front panel power state LEDs Provisions have also been made to allow the processor board to remember which power state it was in when a power failure occurs The instrument will return to the same power state after a power failure Rear Panel Connectivity The A4 Processor assembly has direct access to the rear panel of the instrument The rear panel connections provided on the A4 Proc...

Page 358: ... main purpose for the SD memory card is for instrument calibration database backup The SD memory card that is shipped with each new instrument is currently a 16 GB SDHC card It is shipped with a backup of the instrument s factory calibration database The field adjustment software will also automatically create a backup of the instrument calibration database on the SD memory card each time an adjus...

Page 359: ...on the board These settings are saved in a separate memory location on the board and accessed by the BIOS Basic Input Output System Setup Utility If these settings are changed from those that the instrument was initially shipped with this could cause a problem with the booting and or functionality of the instrument If the instrument is having a problem booting up but is functional enough to enter ...

Page 360: ...The first step in troubleshooting is to determine if the failure is software related If software is found not to be the issue the disk drive should be replaced Before replacing the A5 disk drive it is highly recommended that the factory calibration data be backed up to an external drive if at all possible If this data is not backed up prior to replacing the disk drive all instrument adjustments an...

Page 361: ... that was previously installed into the instrument Do not save any user data to the C drive partition as any data saved in this partition will be lost if the recovery process is run D This partition is reserved for data storage The User Accounts that are preconfigured by Keysight and their My Documents folder are mapped to the D drive This is for the convenience of backing up the user data You sho...

Page 362: ...the Windows operating system or the instrument application software The failure could have occurred due to a failed installation procedure instrument application software update failure or a virus To correct these issues there are two procedures that can be initiated to resolve a software related issue Reload the instrument application software Use the Recovery Process to reinstall the Windows ope...

Page 363: ...he instrument application software has become corrupt the Windows operating system will boot but the instrument application software will fail to start In these cases go to Chapter 20 Instrument Software for information on how to update the instrument application software This procedure will not affect the instrument s calibration or user files If this does not resolve the boot issue or the instru...

Page 364: ...ndows and Service Pack updates user accounts and windows configuration settings After a recovery these configurations will have to be redone by the end user Additional software that was installed after the instrument was shipped from the factory After a recovery that software will need to be re installed by the end user Any data or programs saved on the D or E drives This data will be retained on ...

Page 365: ...or 5 seconds Figure 11 2 4 Press the down arrow key to move the highlight to Instrument Image Recovery System press the Enter key 5 When the Instrument Image Recovery System has booted follow the on screen instructions to recover the image of the C drive 6 After exiting the Instrument Image Recovery System the instrument will reboot a few times 7 Update the instrument application software to the l...

Page 366: ...uide CPU Disk Drive Disk Drive Recovery Process Replacing the instrument disk drive If the above two procedures did not resolve the booting issue The disk drive should be replaced Refer to the Disk Drive replacement section on page 596 ...

Page 367: ... in the Power Supply and Midplane sections This following descriptions are found in this chapter A6 Power Supply Description on page 368 A6 Power Supply Assembly Troubleshooting on page 371 A7 Midplane Board Assembly Description on page 373 A7 Midplane Board Assembly Troubleshooting on page 375 Each of the following sections first describes how the assembly works then gives information to help you...

Page 368: ...plugs into the A7 Midplane Assembly from the rear of the instrument A6 Power Supply Description The A6 Power Supply assembly is serviced as an assembly only no component level repair is supported The A6 Power Supply assembly provides most all of the necessary DC voltages for the instrument If any of the power supplies are not within their operating voltages the instrument will not function properl...

Page 369: ...HER is an AC coupled analog signal going to the supply that is used to frequency modulate the power supply switching frequency for the purpose of lowering any power supply related interference The DITHER signal is generated on the A7 Midplane board assembly Table 12 1 Supply Name Description Referenced To 32VA 32 Volt Analog Supply ACOM 15VA 15 Volt Analog Supply ACOM 15VSB 15 Volt Standby Supply ...

Page 370: ...ower supply has experienced a major failure and should be replaced Standby Supplies The A6 Power Supply assembly has two standby supplies that should always be on if the AC input voltage requirements are met These are the 15VSB and the 5 1VSB supplies These supplies are used by the instrument to keep certain circuits alive even when the power is turned off Over Current Protection The A6 Power Supp...

Page 371: ...to turn on all of its outputs This signal comes from the A4 Processor board assembly and is initiated by pressing the front panel power button If the instrument will not turn on be sure that this line is being pulled low by either measuring the voltage level at Test Point 518 on the A7 Midplane board assembly or by viewing the status of the POWER_ON_L LED See the A7 Midplane Board Assembly Trouble...

Page 372: ...eing met this status output line will be at a TTL high level The conditions that could cause this status output line to be at a TTL low level include that of an over current condition an over voltage condition and an over temperature condition However there is no way to know at the A6 Power Supply assembly level which one of these conditions may be the cause of a TTL low level to be on the FAULT_L...

Page 373: ...he following functions Instrument power supply voltage test points and status LEDs 3 3V analog linear power supply regulation 3 3VA 5 2V analog linear power supply regulation 5 2VA Non volatile memory for storage of the instrument model number serial number and software license keys Secure Storage Power supply dithering A triangle wave of approximately 100 Hz is generated and goes directly to the ...

Page 374: ...ts To J101 A6 Power Supply Assembly J111 A6 Power Supply Assembly J102 A6 Power Supply Assembly J112 A6 Power Supply Assembly J103 A6 Power Supply Assembly J201 A4 Processor Assembly J104 A6 Power Supply Assembly J202 A4 Processor Assembly J105 A6 Power Supply Assembly J203 A4 Processor Assembly J106 A6 Power Supply Assembly J204 A4 Processor Assembly J107 A6 Power Supply Assembly P1 A8 Motherboar...

Page 375: ...points and LEDs on the A7 Midplane board assembly as seen in Figure 12 2 Instrument Secure Storage This is Non volatile storage of instrument model number serial number and software license keys While the license keys are also contained on the C drive of the instrument the model and serial numbers are only saved in this secure memory There is no way for the user to access this memory in any way Th...

Page 376: ...nalog Supply ACOM A6 Red 0 Off 9 1 0 5 1VA 5 1 Volt Analog Supply ACOM A6 Red 0 Off 5 1 0 75 7VA 7 Volt Analog Supply ACOM A6 Red 0 Off 7 1 0 15VA 15 Volt Analog Supply ACOM A6 Red 0 Off 15 1 0 12VD 12 Volt Digital Supply DCOM A6 Red 0 Off 12 1 0 5 1VD 5 1 Volt Digital Supply DCOM A6 Red 0 Off 5 1 0 75 5 1VSB 5 1 Volt Standby Supply DCOM A6 Green 5 1 0 75 Green 5 1 0 75 3 35VD 3 35 Volt Digital Su...

Page 377: ...TTL High Green TTL Low POWER_SW_L Power Switch Pressed ACOM A4 n a TTL High Green TTL Highb a With AC mains connected to the instrument b POWER_SW_L should only be at a TTL Low state when the front panel power switch is being pressed Table 12 3 A7 Midplane Board LEDs and Test Points Supply Signal Description Referenced To Generated On Expected Status Power Offa Power On LED Test Point VDC LED Test...

Page 378: ...378 Keysight N9038A MXE Service Guide Power Supply Midplane A7 Midplane Board Assembly Troubleshooting Figure 12 2 A7 Midplane Board Assembly LEDs and Test Points ...

Page 379: ...owing information is found in this chapter 1 Theory of operation of the Motherboard Assembly 2 Theory of operation of the Front Panel Assembly 3 Isolating the cause of an hardware problem by verifying the functionality of assemblies This following descriptions are found in this chapter A8 Motherboard Assembly Description page 380 A1 Front Panel Assembly page 382 ...

Page 380: ...Motherboard Assembly Connections The connections to and from the A8 Motherboard assembly are as listed in Table 13 1 and as illustrated in Figure 13 1 Table 13 1 A8 Motherboard Assembly Connections Connector Connects to Connector Connects to J2 A7 Midplane P13 J21 A16 Reference J100 J3 A7 Midplane P3 J31 J32 Option Slot J4 A7 Midplane P2 J41 J42 Option Slot J5 A7 Midplane P1 J51 J52 A30 LISN Contr...

Page 381: ...Keysight N9038A MXE Service Guide 381 Motherboard Front Panel A8 Motherboard Assembly Description Figure 13 1 A8 Motherboard Assembly Connectors ...

Page 382: ...he Front Panel Interface Board contains LCD control backlight drive audio amplifiers internal speaker a 4 port USB hub and a USB keyboard microcontroller The two different front panel rubber keypads attach to the back side of the board which has the keyboard contacts printed on the reverse side The 4 ports from the USB hub contained on this board go to the 2 front panel USB connectors the keyboard...

Page 383: ...wing information is found in this chapter A25 Wideband Analog IF Assembly Description page 384 A25 Wideband Analog IF Assembly Troubleshooting page 387 A26 Wideband Digital IF Assembly Description page 393 A26 Wideband Digital IF Assembly Troubleshooting page 396 A30 LISN Control Assembly Description page 399 A30 LISN Control Assembly Troubleshooting page 401 ...

Page 384: ...t to the A26 Wideband Digital IF assembly for processing IF Signal Routing The wideband IF output of the A15 Front End Controller J901 is routed to the A25 Wideband Analog IF via W52 Without the optional 85 MHz analysis bandwidth option B85 this signal would go directly to the A3 Digital IF assembly In order to accommodate both the A25 Wideband Analog IF and the A3 Digital IF assemblies the signal...

Page 385: ...ater stability to the assembly Table 14 1 A25 Wideband Analog IF Assembly Connections Port Description To From Cable Frequency J2 Digital Signal Output A26 Wideband Digital IF J778 W10 Digital J101 Wideband IF Input A15 Front End Controller J901 W52 300 MHz J102 Wideband IF Output A3 Digital IF J15 W15 250 MHz J301 2400 MHz Reference Input A16 Reference J718 W51 2400 MHz J302 2400 MHz Reference Ou...

Page 386: ...386 Keysight N9038A MXE Service Guide Optional Assemblies A25 Wideband Analog IF Assembly Description Figure 14 1 A25 Wideband Analog IF Connections ...

Page 387: ... instrument software The first step in verifying that this has happened is to look at the instrument Hardware Information screen To view this information press System Show Hardware Once you do this you will see a listing of instrument hardware assemblies that are installed The A25 Wideband Analog IF assembly should identify itself on this list as WB Analog IF If this assembly does not identify its...

Page 388: ... sure that the RF preselector is turned off by pressing Mode EMI Receiver Input Output RF Input RF Preselector Off 3 Turn on the internal 50 MHz calibrator signal by pressing Input Output RF Calibrator 50 MHz 4 Switch the instrument to IQ Analyzer mode by pressing Mode IQ Analyzer Basic 5 Tune the instrument to 50 MHz by pressing FREQ Channel 50 MHz 6 Switch the instrument IF signal path to go thr...

Page 389: ...instructions on removing these covers 2 Turn the instrument on and allow it to complete its boot up process and initial alignments 3 Referring to Figure 14 1 disconnect coaxial cable W51 from A25 J301 4 Connect the loose end of W51 to a spectrum analyzer input to verify the signal frequency and amplitude 5 Tune the spectrum analyzer to 2400 MHz with a span of 1 MHz 6 Measure the signal level using...

Page 390: ...cy and amplitude level 1 Turn the instrument internal alignments off by pressing System Alignments Auto Align Off 2 Referring to Figure 14 1 disconnect coaxial cable W52 from A25 J101 3 Connect the loose end of W52 to a spectrum analyzer input to verify the signal frequency and amplitude 4 Tune the spectrum analyzer to 300 MHz with a span of 1 MHz 5 Measure the signal level using the peak search f...

Page 391: ...IF assembly the internal alignments will have failures for everything related to either the DIF40 or MediumBandIF While the exact levels cannot be verified the existence of a signal coming out of J101 during an instrument internal alignment can be verified by following this procedure 1 Referring to Figure 14 1 disconnect coaxial cable W15 from A25 J102 2 Connect a cable from J102 to the input of a...

Page 392: ...s A25 Wideband Analog IF Assembly Troubleshooting Figure 14 5 Input Switching Verification 8 If a signal similar to what is seen in Figure 14 5 is seen at some point during the alignment then the input switching circuitry would appear to be working properly ...

Page 393: ... PC or the A4 Processor assembly DSP ASIC The DSP ASIC provides high speed real time DSP functionality at sample rates of up to 300 MSmp s DDR The ADC samples are routed through the DPS ASIC to allow real time amplitude and phase corrections complex down conversion arbitrary resampling and decimation channel filtering and detection The input filter is used to correct both for the amplitude and pha...

Page 394: ...FPGA by the CPLD under Power PC control over a dedicated 16 bit 100MHz programming bus CPLD The CPLD generates local reset signals and has a register based interface to the Power PC CPU memory bus The Power PC CPU to CPLD interface has two parts The first is an 8 bit wide interface that is always available and allows for such things as diagnostics reset control and FPGA reprogramming control The s...

Page 395: ...ock Typical stretch ratios are approximately seven hundred to one Prior to interpolating the arrival of triggers the pulse stretcher must be calibrated so that the slope and offset of its stretching abilities are known There is an instrument internal alignment for this calibration A26 Wideband Digital IF Assembly Connections The connections to and from the A26 Wideband Digital IF assembly are as l...

Page 396: ...fying that this has happened is to look at the instrument Hardware Information screen To view this information press System Show Hardware Once you do this you will see a listing of instrument hardware assemblies that are installed The A26 Wideband Digital IF assembly should identify itself on this list as WB Digital IF If this assembly does not identify itself the cause for this will need to be de...

Page 397: ...However due to its input and output being a digital bus it would be very difficult to isolate and verify the functionality of the assembly itself only the A25 Wideband Analog IF and A26 Wideband Digital IF assemblies working together can be verified The following procedure will verify this 1 Turn the instrument on and allow it to complete its boot up process and initial alignments 2 Make sure that...

Page 398: ...ignal level measured is correct the overall basic functionality of the A26 Wideband Digital IF assembly is working as it should If not go to the A25 Wideband Analog IF troubleshooting information in this chapter and verify that the inputs to it are correct If they are the problem could be either the A25 Wideband Analog IF assembly or the A26 Wideband Digital IF assembly ...

Page 399: ...is connected to the AUX I O port on the instrument rear panel by ribbon cable W9 The instrument user has control of an external LISN from the EMI Receiver mode under either the Mode Setup or Meas Setup menus For troubleshooting purposes there is a control menu for this assembly on the Service Menu See Chapter 16 Service and Diagnostics Menus for more information on this A30 LISN Control Assembly C...

Page 400: ...400 Keysight N9038A MXE Service Guide Optional Assemblies A30 LISN Control Assembly Description Figure 14 8 A30 LISN Control Assembly Connectors ...

Page 401: ...ssemblies that are installed The A30 LISN Control assembly should identify itself on this list as General Purpose IO Control If this assembly does not identify itself the cause for this will need to be determined before any other troubleshooting is performed The most probable causes for this type of a problem would be An instrument power supply voltage is not operating properly Solution Verify all...

Page 402: ... 14 4 4 If the status of any of the LEDs is not correct verify that all of the instrument power supply voltage levels are correct For information on how to verify these voltage levels see Chapter 12 Power Supply Midplane 5 If the power supply voltages are all correct and the state of the status LEDs are still not correct replace the A30 LISN Control assembly Before verifying the status of the outp...

Page 403: ... on how to access the service menu see Chapter 16 Service and Diagnostics Menus If all of the data lines are changing state properly the A30 LISN Control assembly is working properly If any of the rear panel AUX I O data lines are not working properly proceed to step 3 to determine the problem 3 Remove the instrument dress cover and top brace Refer to Chapter 18 Assembly Replacement Procedures for...

Page 404: ...404 Keysight N9038A MXE Service Guide Optional Assemblies A30 LISN Control Assembly Troubleshooting Figure 14 9 Rear Panel AUX I O Pinout ...

Page 405: ... Option 503 508 and 526 Band 0 N9038A RF Section Option 508 and 526 Band 1 N9038A RF Section Option 526 Band 2 N9038A RF Section Option 526 Band 3 N9038A RF Section Option 526 Band 4 N9038A RF Section Option 544 Band 0 N9038A RF Section Option 544 Band 1 N9038A RF Section Option 544 Band 2 N9038A RF Section Option 544 Band 3 N9038A RF Section Option 544 Band 4 N9038A RF Section Option 544 Band 5 N...

Page 406: ...406 Keysight N9038A MXE Service Guide Block Diagrams Block Diagrams Block Diagrams ...

Page 407: ...Keysight N9038A MXE Service Guide 407 Block Diagrams Block Diagrams N9038A RF Input Option 503 508 526 Block Diagram ...

Page 408: ...408 Keysight N9038A MXE Service Guide Block Diagrams Block Diagrams N9038A RF Input Option 544 Block Diagram ...

Page 409: ...ilter Path 8 11 MHz Filter Path 11 14 MHz Filter Path 14 17 MHz Filter Path 17 20 MHz Filter Path 20 24 MHz Filter Path 24 28 MHz Filter Path 28 32 MHz Filter Path J402 J401 Thru Path 2 3 6 GHz Filter Path 600 MHz 1 GHz Filter Path 1 2 GHz Filter Path 300 600 MHz Filter Path 150 300 MHz Filter Path 70 150 MHz Filter Path 30 70 MHz Filter Path 1 0 GHz LPF 350 MHz LPF 200 MHz LPF 90 MHz 2 MHz 4 4 GH...

Page 410: ...ver 3 5 dB 3 5 dB 12 5 dB 40 kHz Low Pass Filter 20 Hz 150 kHz Filter Path 150 kHz 1 MHz Filter Path 1 2 MHz Filter Path Low Band Thru Path High Band Thru Path 2 5 MHz Filter Path 5 8 MHz Filter Path 8 11 MHz Filter Path 11 14 MHz Filter Path 14 17 MHz Filter Path 17 20 MHz Filter Path 20 24 MHz Filter Path 24 28 MHz Filter Path 28 32 MHz Filter Path J402 J401 Thru Path 2 3 6 GHz Filter Path 600 M...

Page 411: ...YTF Control J1 A11 RF Switch High Band Preamp Control High Band Preamp 30 dB J4 J3 J1 J2 X2 LO Distribution Mixer Bias Amplifier Bias Switch Control 3 6 GHz LPF 9 GHz LPF 4 8 GHz LO From A16 J702 A13A2 50W Load A13A3 50W Load 8 3 14 GHz BPF LOG DET VCO 260 MHz 400 MHz 120 MHz LPF 1 Only with serial prefix MY SG5322 J900 J901 J1100 W16 to A2J100 W15 to A3J15 Or W52 to A25J101 Option B85 W22 to Rear...

Page 412: ...J300 J800 1st Mixer High Band 13 6 GHz A12 YTF Control J1 A11 RF Switch High Band Preamp Control High Band Preamp 30 dB J4 J3 J1 J2 X2 LO Distribution Mixer Bias Amplifier Bias Switch Control 3 6 GHz LPF 9 GHz LPF 4 8 GHz LO From A16 J702 322 5 MHz A13A2 50W Load A13A3 50W Load 8 3 14 GHz BPF LOG DET VCO 260 MHz 400 MHz 120 MHz LPF 1 Only with serial prefix MY SG5322 J900 J901 J1100 W16 to A2J100 ...

Page 413: ... Band Preamp Control YTF Driver Front End Assembly Control J700 J300 J800 1st Mixer High Band 13 6 GHz A12 YTF Control J1 A11 RF Switch High Band Preamp Control High Band Preamp 30 dB J4 J3 J1 J2 X2 LO Distribution Mixer Bias Amplifier Bias Switch Control 3 6 GHz LPF 9 GHz LPF 4 8 GHz LO From A16 J702 A13A2 50W Load A13A3 50W Load 8 3 14 GHz BPF LOG DET VCO 260 MHz 400 MHz 120 MHz LPF 1 Only with ...

Page 414: ...J3 J1 J2 X2 LO Distribution Mixer Bias Amplifier Bias Switch Control 3 6 GHz LPF 9 GHz LPF 4 8 GHz LO From A16 J702 A13A2 50W Load A13A3 50W Load 8 3 14 GHz BPF LOG DET VCO 260 MHz 400 MHz 120 MHz LPF 1 Only with serial prefix MY SG5322 J900 J901 W16 to A2J100 W15 to A3J15 Or W52 to A25J101 Option B85 W22 to Rear Panel AUX IF OUT J902 19 dBm Input Port RF Preselector Input Attenuation Internal Pre...

Page 415: ...Distribution Mixer Bias Amplifier Bias Switch Control 3 6 GHz LPF 9 GHz LPF 4 8 GHz LO From A16 J702 A13A2 50W Load A13A3 50W Load 8 3 14 GHz BPF LOG DET VCO 260 MHz 400 MHz 120 MHz LPF 1 Only with serial prefix MY SG5322 J900 J901 J1100 W16 to A2J100 W15 to A3J15 Or W52 to A25J101 Option B85 W22 to Rear Panel AUX IF OUT J902 24 dBm Input Port RF Preselector Input Attenuation Internal Preamp Frequ...

Page 416: ...Distribution Mixer Bias Amplifier Bias Switch Control 3 6 GHz LPF 9 GHz LPF 4 8 GHz LO From A16 J702 A13A2 50W Load A13A3 50W Load 8 3 14 GHz BPF LOG DET VCO 260 MHz 400 MHz 120 MHz LPF 1 Only with serial prefix MY SG5322 J900 J901 J1100 W16 to A2J100 W15 to A3J15 Or W52 to A25J101 Option B85 W22 to Rear Panel AUX IF OUT J902 27 dBm Input Port RF Preselector Input Attenuation Internal Preamp Frequ...

Page 417: ... A11 RF Switch High Band Preamp Control High Band Preamp 30 dB J4 J3 J1 J2 X2 LO Distribution Mixer Bias Amplifier Bias Switch Control 3 6 GHz LPF 4 8 GHz LO From A16 J702 A13A2 50W Load A13A3 50W Load 14 GHz LPF LOG DET VCO 260 MHz 400 MHz 120 MHz LPF J900 J901 J1100 W16 to A2J100 W15 to A3J15 Or W52 to A25J101 Option B85 W22 to Rear Panel AUX IF OUT J902 17 GHz LPF J13 17 to 34 5 GHz J903 N9038A...

Page 418: ...W Load 14 GHz LPF LOG DET VCO 260 MHz 400 MHz 120 MHz LPF J900 J901 J1100 W16 to A2J100 W15 to A3J15 Or W52 to A25J101 Option B85 W22 to Rear Panel AUX IF OUT J902 17 GHz LPF J13 17 to 34 5 GHz Option 544 Band 0 20 Hz to 3 6 GHz Signal Path LO Path 5 172 5 MHz Input Port RF Preselector Input Attenuation Internal Preamp Frequency Span Auto Alignments Input Frequency Input Amplitude Internal Calibra...

Page 419: ...A16 J702 A13A2 50W Load A13A3 50W Load 14 GHz LPF LOG DET VCO 260 MHz 400 MHz 120 MHz LPF J900 J901 J1100 W16 to A2J100 W15 to A3J15 Or W52 to A25J101 Option B85 W22 to Rear Panel AUX IF OUT J902 17 GHz LPF J13 Band 1 3 6 to 8 4 GHz 47 dBm 53 dBm 5 122 5 MHz Signal Path LO Path 41 dBm Input Port RF Preselector Input Attenuation Internal Preamp Frequency Span Auto Alignments Input Frequency Input A...

Page 420: ...m A16 J702 A13A2 50W Load A13A3 50W Load 14 GHz LPF LOG DET VCO 260 MHz 400 MHz 120 MHz LPF J900 J901 J1100 W16 to A2J100 W15 to A3J15 Or W52 to A25J101 Option B85 W22 to Rear Panel AUX IF OUT J902 17 GHz LPF J13 Band 2 8 3 to 13 6 GHz 30 dBm 35 dBm 5 161 25 MHz Signal Path LO Path 23 dBm Input Port RF Preselector Input Attenuation Internal Preamp Frequency Span Auto Alignments Input Frequency Inp...

Page 421: ...A16 J702 A13A2 50W Load A13A3 50W Load 14 GHz LPF LOG DET VCO 260 MHz 400 MHz 120 MHz LPF J900 J901 J1100 W16 to A2J100 W15 to A3J15 Or W52 to A25J101 Option B85 W22 to Rear Panel AUX IF OUT J902 17 GHz LPF J13 Band 3 13 5 to 17 1 GHz 30 dBm 35 dBm 7 661 25 MHz Signal Path LO Path 25 dBm Input Port RF Preselector Input Attenuation Internal Preamp Frequency Span Auto Alignments Input Frequency Inpu...

Page 422: ... A16 J702 A13A2 50W Load A13A3 50W Load 14 GHz LPF LOG DET VCO 260 MHz 400 MHz 120 MHz LPF J900 J901 J1100 W16 to A2J100 W15 to A3J15 Or W52 to A25J101 Option B85 W22 to Rear Panel AUX IF OUT J902 17 GHz LPF J13 Band 4 17 0 to 26 5 GHz 31 dBm 36 dBm 5 080 625 MHz Signal Path LO Path 25 dBm Input Port RF Preselector Input Attenuation Internal Preamp Frequency Span Auto Alignments Input Frequency In...

Page 423: ... A16 J702 A13A2 50W Load A13A3 50W Load 14 GHz LPF LOG DET VCO 260 MHz 400 MHz 120 MHz LPF J900 J901 J1100 W16 to A2J100 W15 to A3J15 Or W52 to A25J101 Option B85 W22 to Rear Panel AUX IF OUT J902 17 GHz LPF J13 Band 5 26 4 to 34 5 GHz 33 dBm 39 dBm 19 dBm 7 580 625 MHz Signal Path LO Path 27 dBm 20 dBm Input Port RF Preselector Input Attenuation Internal Preamp Frequency Span Auto Alignments Inpu...

Page 424: ...A13A3 50W Load 14 GHz LPF LOG DET VCO 260 MHz 400 MHz 120 MHz LPF J900 J901 J1100 W16 to A2J100 W15 to A3J15 Or W52 to A25J101 Option B85 W22 to Rear Panel AUX IF OUT J902 17 GHz LPF J13 17 to 34 5 GHz Band 6 34 4 to 44 GHz Signal Path LO Path 34 dBm 40 dBm 19 dBm 28 dBm 20 dBm 5 040 3125 MHz Input Port RF Preselector Input Attenuation Internal Preamp Frequency Span Auto Alignments Input Frequency...

Page 425: ...GA_100 MHz CA6 AUDIO P1 C6 To A16J726 Noise Source Drive 28V BNC N C IF_10M_REF to Reference Bd AFPGA_100MHz Diag_to_adc TRIG_1 TRIG_2 Trig2_Lev Trig1_Lev LINE_TRIG AIF_TRIG INT_SWP SETTLED COMB_1 COMB_2 LOCKn STEP CAL DRIVE J11 J4 J5 J13 J7 J6 J8 J16 ADC2 12 bit ADC1 16 bit J17 ALIGN OUT X2 Memory Controller Recon 15 0 ADC2p n_CLK ADC2 ADC1 ADC1 Clk ADC2 Clk Capture Memory RECONSTRUCTION Noise So...

Page 426: ... A16 J718 Not Used J2 J805 J806 W50 To A16 J726 W23 From A3 J17 A26 Wideband Digital IF W10 10 MHz J802 J502 Analog Card Cage PCI Card Cage J501 Analog Card Cage J502 PCI Card Cage FPGA CPLD FPGA Image Memory Power PC PCI to PCIe Bridge Non Transparent PCI to PCI Bridge 2 Gbytes DDR 2 SDRAM DSP ASIC ADC Data J9000 LVDS PCIe Bus J778 Local PCI Bus Not Used Footnotes 1 250 MHz when 40 MHz path 300 M...

Page 427: ...TRIG J820 W7 W7 COMB IN A3 DIGITAL IF X3 Sum Dither Digital Signal Processing Sweep Orchestration SPI Engine PCI PCI ILB Capture Memory Noise Source Drive X3 10 MHz LVDS 22 5 MHz IF TRIGGER 1 IN BNC ANALOG OUT BNC TRIGGER 1 OUT BNC TRIGGER 2 OUT BNC SYNC BNC DIGITAL BUS NOISE SOURCE DRIVE 28V BNC SNS NOISE SOURCE IF 10 MHz REF J13 J11 J5 J7 J6 J8 10 MHz OUT BNC 10 MHz Comb to A16 via P1 TRIGGER 2 ...

Page 428: ...Keysight N9038A MXE Service Guide 447 Block Diagrams Block Diagrams LO Synthesizer Block Diagram ...

Page 429: ...448 Keysight N9038A MXE Service Guide Block Diagrams Block Diagrams Reference Block Diagram ...

Page 430: ...Keysight N9038A MXE Service Guide 449 Block Diagrams Block Diagrams MXE Computer Block Diagram ...

Page 431: ...450 Keysight N9038A MXE Service Guide Block Diagrams Block Diagrams ...

Page 432: ...is controlled Examples are the ability to select a specific RF Preselector Filter Path Controlling Access There are two levels of service and diagnostics capabilities 1 Unrestricted Access Access to the Diagnostics menu is allowed for everyone Care may be required to use a feature appropriately This is the Diagnostics type of Service capability defined above 2 Secure Service Access Access to the S...

Page 433: ...ing System More Service The following Service Code with then be required to enter the Service Menu Service Code 2061 Once access has been gained it will persist within the current instance of the instrument application If the user exits the instrument application the Service Code will need to be entered again in order to gain access to the Service Menu ...

Page 434: ...ht N9038A MXE Service Guide 453 Service and Diagnostics Menus Service Menus Service Menus Figure 16 1 Service Menu Figure 16 2 Diagnostics Menu Diagnostics Diagnostics Show Hdwr Statistics Hardware Statistics ...

Page 435: ...454 Keysight N9038A MXE Service Guide Service and Diagnostics Menus Service Menus Figure 16 3 Corrections Menu Figure 16 4 Lock Functions Menu ...

Page 436: ...Keysight N9038A MXE Service Guide 455 Service and Diagnostics Menus Service Menus Figure 16 5 Alignments Menu ...

Page 437: ... Off Band Lock Conducted Band 0 Radiated B0 50 00 MHz Through Band 0 Off Characterize All Bands Band 0 30MHz 70MHz Band 1 70MHz 150MHz Band 2 150MHz 300MHz Band 3 300MHz 600MHz Band 4 600MHz 1GHz Band 5 1GHz 2GHz Calibrator DDS Freq DC 60 MHz 30 00 MHz Noise Source 10MHz 4GHz Off Through Band 0 20Hz 2 MHz Band 1 2MHz 20MHz Band 2 30MHz 3 6GHz Band 3 20Hz 3 6GHz Conducted Bands Radiated Bands ...

Page 438: ...ducted Bands Conducted Band 0 20Hz 40kHz Band 1 20Hz 150kHz Band 2 150kHz 1MHz Band 3 1MHz 2MHz Band 4 2MHz 5MHz Band 5 5MHz 8MHz More 1 of 3 Conducted Conducted Band 6 8MHz 11MHz Band 7 11MHz 14MHz Band 8 14MHz 17MHz Band 9 17MHz 20MHz Band 10 20MHz 24MHz Band 11 24MHz 28MHz More 2 of 3 Band 12 28MHz 32MHz More 3 of 3 ...

Page 439: ...s Service Menus Figure 16 8 Radiated Bands Menu Radiated Bands Radiated Tuned Frequency 50 00 MHz Radiated Band Band 0 Radiated Band Band 0 30MHz 70MHz Band 1 70MHz 150MHz Band 2 150MHz 300MHz Band 3 300MHz 600MHz Band 4 600MHz 1GHz Band 5 1GHz 2GHz Band 6 2GHz 3 6GHz ...

Page 440: ...Keysight N9038A MXE Service Guide 459 Service and Diagnostics Menus Service Menus Figure 16 9 Data Acquisition Control Menu Figure 16 10 AUX I O Control Menu ...

Page 441: ...t accesses to the Service Menu are unimpeded Figure 16 11 Service Code Entry You can use the numeric keypad to enter the Service Code which is 2061 and since Login is the default highlighted key the Enter key can be used to complete the entry If an invalid Service Code is entered access will not be granted and you will see the message shown in Figure 16 12 You will need to accept this prompt and p...

Page 442: ...frequency the DAC value can be saved in non volatile memory by pressing the Save menu key If the Timebase DAC value has been changed but no Save operation performed before exiting this menu a warning is provided to you that they have not saved their setting as shown in Figure 16 13 Figure 16 13 Timebase DAC Changes Warning Save Save permanently saves the current Timebase DAC setting to non volatil...

Page 443: ...ilitate troubleshooting the cause of flatness related problems Flatness Video Shift On Off The Flatness Video Shift turns off the corrections for gain vs frequency It does not turn off the corrections for changes in the analog IF gain that accompany flatness changes This function turns both the gain and video shift on or off but does not affect the temperature corrections When set to off it is pos...

Page 444: ...rge a range as can be accommodated by the specified harmonic number and 1st LO frequency range As a result this feature can be used to check performance in the frequency band overlap regions By definition multi band sweeps are not allowed When a band lock is selected the Advisory Event Band Locked Band x is displayed where x is a value between 0 and 4 When band lock is cancelled the Advisory Event...

Page 445: ...e range is from 0 to 4095 where 0 is the minimum gain and 4095 is the maximum gain Setting a value of 4096 or greater returns control to the instrument In External Mixing this DAC controls the level of the 1st LO signal at the front panel EXT MIXER connector External LO Turnoff Disconnects the 1st LO path which will minimize the effect of the 1st LO signal at the front panel EXT MIXER connector Al...

Page 446: ...invoking individual components of the complete alignments that are available on the System Alignment Align Now menu that is accessible to the normal user ADC Immediately executes an alignment of the ADC subsystem The instrument will stop any measurement currently underway perform the alignment and then restart the measurement from the beginning A failure of ADC will set the Error Condition Align A...

Page 447: ...IF failed The Advisory Event Alignment complete is displayed when the alignment is complete Align IF can be interrupted by pressing the Cancel ESC front panel key When this occurs no new IF alignment data will be employed Current IF Flatness Immediately executes an alignment of the Current IF Flatness The instrument will stop any measurement currently underway perform the alignment and then restar...

Page 448: ... LO Phase Noise Adjustment Immediately executes an optimization LO for Phase Noise when the optimization is finished the value is stored in non volatile memory The instrument will stop any measurement currently underway perform the alignment and then restart the measurement from the beginning The Advisory Event Alignment complete is displayed when the alignment is complete LO Phase Noise Adjustmen...

Page 449: ...h Band 1 Selects the 20 Hz to 150 kHz filter path Band 2 Selects the 150 kHz to 1 MHz filter path Band 3 Selects the 1 MHz to 2 MHz filter path Band 4 Selects the 2 MHz to 5 MHz filter path Band 5 Selects the 5 MHz to 8 MHz filter path Band 6 Selects the 8 MHz to 11 MHz filter path Band 7 Selects the 11 MHz to 14 MHz filter path Band 8 Selects the 14 MHz to 17 MHz filter path Band 9 Selects the 17...

Page 450: ...listed in Table 16 1 Radiated Band This will allow access to a menu where the different radiated filter bands can be selected Band 0 Selects the 30 MHz to 70 MHz tunable filter path Band 1 Selects the 70 MHz to 150 MHz tunable filter path Band 2 Selects the 150 MHz to 300 MHz tunable filter path Band 3 Selects the 300 MHz to 600 MHz tunable filter path Band 4 Selects the 600 MHz to 1 GHz tunable f...

Page 451: ...ts the 30 MHz to 3 6 GHz through path located on the A22 Radiated Filter assembly Band 3 Selects the 20 Hz to 3 6 GHz through path located on the A21 RF Preselector Input assembly Off This will return the instrument signal path control to the normal settings for the current instrument settings This will also be accomplished by using the Mode Preset key Characterize Preselector The menu will allow ...

Page 452: ...he current database see Chapter 19 Post Repair Procedures Figure 16 15 Characterize Preselector Confirmation The characterization for Bands 0 through 4 will take approximately five minutes each to complete while the characterization for Band 5 will take around ten minutes Running the characterization for All Bands will take approximately 35 minutes All Bands Will align all 6 adjustable radiated fi...

Page 453: ...o 30 MHz RF Preselector alignment when balancing the signal levels through the different filter paths of the A24 Conducted Filter assembly Once this calibrator signal is selected the frequency of the signal can be set from 20 Hz to 60 MHz Noise Source The Noise Source provides a broadband noise signal from 10 MHz to 4 GHz This is used to align the tunable filters of the A22 Radiated Filter assembl...

Page 454: ...ector This connector is used by the instrument to control an external device via an 8 bit data bus The pinout of the 25 pin rear panel AUX I O connector is as shown in Figure 16 16 Figure 16 16 Rear Panel AUX I O Connector Pinout With the use of a voltmeter along with the service menu the operation of each of the individual data lines to the rear panel connector as well as the supply voltages can ...

Page 455: ... the System menu will contain system level diagnostics that can be either viewed by any user Show Hdwr Statistics As shown in Figure 16 17 this will display the following instrument hardware statistics Mechanical relay switch counts Mechanical attenuator switch counts Instrument temperature extremes Elapsed instrument on time Figure 16 17 Hardware Statistical Information ...

Page 456: ...7 4 CPU Assembly page 498 Figure 17 5 Disk Drive Tray Assembly page 499 Figure 17 6 RF Area Option 503 508 526 page 500 Figure 17 7 RF Area Assemblies and Cables Option 544 page 502 Figure 17 8 RF Area Cables Option 544 page 503 Figure 17 9 Front End Parts Typical page 504 Figure 17 10 Front End Control Cables page 506 Figure 17 11 Reference Board Cables page 507 Figure 17 13 RF Preselector Boards...

Page 457: ...tion of where the part is located what it looks like and its function if known Quantity required For a list of Keysight Technologies sales and service office locations refer to Contacting Keysight Technologies on page 31 Figure 17 21 Input Connector page 517 Figure 17 22 RF 2 Input Connector page 518 Figure 17 23 Front Frame Exploded View LED Backlight page 519 Figure 17 24 Front Frame Parts LED B...

Page 458: ...A1MP7 Blank Cover Plate N9020 00002 A1A1MP8 Top Trim Strip W1312 40019 A1A1MP9 10 Side Trim Strip W1312 40005 A1A1MP11 12 Side Trim Strip Vinyl 5041 9172 A1A2 Front Panel Interface Board Serial MY SG52260000 W1312 60137 Serial MY SG52260000 W1312 63092 A1A2MP1 Speaker 9164 0453 A1A2MP2 Speaker Foam N9038 40088 A1A3 Liquid Crystal Display Serial MY SG52260000 2090 0997 Serial MY SG52260000 2090 091...

Page 459: ...W1312 00145 Serial MY SG52260000 W1312 00115 A1MP15 Shield Inverter Board W1312 00024 A1MP16 Shield Inverter Assembly Top N9020 00010 A1MP17 Shield Inverter Assembly Bottom N9020 00011 A1MP19 Shield Front Panel Interface N9020 00051 A1MP20 Bracket Input 2 LED Board N9038 21202 A1W1 Flex Circuit Front Panel Interface to LCD Serial MY SG52260000 W1312 60122 Serial MY SG52260000 W1312 60010 A1W2 Cabl...

Page 460: ...lid State Disk Drive PC4 64 Bit Windows 7 N9020 60202 PC2 32 Bit Windows XP N9020 60125 A5MP1 Disk Drive Tray W1312 40078 A5MP2 Disk Drive Rear Panel W1312 00103 A5MP3 Disk Drive Handle 1440 0421 A6 Power Supply Assembly 0950 4934 A7 Midplane Assembly W1312 63095 A8 Motherboard Assembly N9030 63002 A9 RF Attenuator A 0 4 dB Option 503 508 and 526 33360 60008 RF Attenuator A 0 10 dB Option 544 3332...

Page 461: ... and 526 Serial MY SG55260000 E4410 20176 Option 544 N9020 20229 A13W2 Cable Semi Rigid A13A1 Output to Front End Assy A13 J11 Option 503 508 and 526 Serial MY SG55260000 E6607 21179 Option 503 508 and 526 Serial MY SG55260000 E4410 20177 Option 544 N9020 20046 A13A2 50 ohm Termination SMA Male A13J3 1810 0118 A13A3 50 ohm Termination SMA Male A13J5 1810 0118 A13A4 50 ohm Termination SMA Male A13J...

Page 462: ...ard N9038 60021 3 5 mm Input Connector Assembly Option C35 N9038 60019 2 4 mm Input Connector Assembly Option 544 N9030 60011 J1MP1 EMI O Ring 18 75 mm ID 8160 1637 J2 Type N Input Connector Assembly N9038 60021 J2MP1 EMI O Ring 18 75 mm ID 8160 1637 J3 Connector Front Panel External Mixing Option EXM 1250 1666 J3MP1 50 ohm Termination SMA Male J3 Option EXM 1810 0118 J3MP2 Nut Hex 1 4 36 thread 0...

Page 463: ... 00103 Bracket Attenuator A and B Option 544 N9038 01202 MP20 Bracket Attenuator B Option 503 508 and 526 E4449 00103 MP21 Bracket RF Switch High Band Preamp Assembly Option 503 508 and 526 N9020 00023 Option 544 N9020 00013 MP22 Bracket SW1 SW2 Option 503 508 and 526 N9038 01201 Option 544 N9038 01203 MP23 Dress Cover W1312 00119 MP24 Front Panel Impact Cover W1312 40025 MP25 26 Strap Handle E825...

Page 464: ...ntrol A15 J800 to Atten A A9 B A10 E4410 60157 W4 Cable Ribbon Front End Control A15 J700 to RF Switch High Band Preamp A11 J4 E4410 60160 W5 Cable Ribbon Front End Control A15 J102 to Front End Assy A13 J12 E4410 60156 W6 Cable Ribbon Limiter Assy A23 P2 to A1A5J1 A1A6J1 N9038 60011 W7 Cable Ribbon Digital IF A3 J100 to Analog IF A2 J820 E4410 60162 W8 Cable Ribbon Front Panel Interface A1A2 P1 t...

Page 465: ... 8121 1411 W18 Cable Coaxial Reference Assy A16 J705 to Front End Assy A13 J6 8121 1940 W19 Cable Coaxial Reference Assy A16 J711 to Analog IF A2 J300 8121 1861 W20 Cable Coaxial Reference Assy A16 J716 to Digital IF A3 J14 Serial MY SG53220000 8121 1861 Cable Coaxial Reference Assy A16 J710 to Digital IF A3 J14 Serial MY SG53220000 8121 1861 W21 Cable Coaxial Rear Panel EXT REF IN to Reference As...

Page 466: ...n B A10 Port 1 to Transfer Switch SW2 Port 1 Option 503 508 and 526 N9038 21314 Option 544 N9038 21333 W31 Cable Semi Rigid Transfer Switch SW2 Port 2 to RF Presel Input Assy A21 J100 Option 503 508 and 526 N9038 21305 Option 544 N9038 21334 W32 Cable Semi Rigid RF Presel Input Assy A21 J103 to Conducted Filter Assy A24 J402 N9038 21310 W33 Cable Semi Rigid Conducted Filter Assy A24 J401 to RF Pre...

Page 467: ...h Assy A14 J200 N9038 21306 W42 Cable Semi Rigid Reference Assy A16 J702 to Front End Assy A13 J1 N9020 20022 W43 Cable Semi Rigid Reference Assy A16 J701 to Coaxial Switch SW1 Port 2 N9038 21304 W44 Cable Semi Rigid LO Synth Assy A14 J740 to Front End Assy A13 J4 N9020 20087 W45 Cable Semi Rigid W46 to Front End Assy A13 J8 Option EXM Option 503 508 and 526 N9020 20132 Option EXM Option 544 N9020...

Page 468: ...g Nylon 0 25 D SMA 6960 0076 Hole Plug Nylon 0 875 D Type N 6960 0177 Edge Protector Chassis Left and Right 0400 0018 Spiral Wrap 0 250 IN OD 0 160 IN ID Digital IF cables 0890 0025 a Not orderable See A1A1 Table 17 1 All Replaceable Parts Reference Designator Description Part Number ...

Page 469: ... Options Quantity Required Description Part Number 1 Instrument Bottom Feet Kit Standard 5000 0913 4 Bottom Feet 5041 9167 4 Bottom Feet Key Lock 5021 2840 1 Rackmount Kit w o Handles Option 1CM 5063 9215 1 Rackmount Kit w Handles Option 1CP 5063 9222 1 Instrument Front Handles Option 1CN 5063 9228 ...

Page 470: ...2 Pan Head M3 X 0 5 8 mm Torx T 10 9 inch lbs AUX IF Cable W22 Rear Panel MP6 1 Hex Nut n a 5 16 Nut Driver 10 inch lbs AUX I O Cable W9 Rear Panel MP6 2 0380 1858 Hex Head Standoff 4 40 312 in 3 16 Nut Driver 9 inch lbs Display Backlight Inverter Board A1A4 Display Bracket A1MP14 2 0515 0372 Pan Head M3 X 0 5 8 mm Torx T 10 9 inch lbs Display Backlight Inverter Assembly Top Shield A1MP16 Display ...

Page 471: ...se MP1 5 0515 0372 Pan Head M3 X 0 5 8 mm Torx T 10 9 inch lbs Attenuator Brackets MP19 MP20 1 per 0515 0372 Pan Head M3 X 0 5 8 mm Torx T 10 9 inch lbs RF Switch High Band Preamp Bracket MP21 1 0515 0372 Pan Head M3 X 0 5 8 mm Torx T 10 9 inch lbs CPU Assembly A4 Chassis Sides MP2 MP4 4 0515 0372 Pan Head M3 X 0 5 8 mm Torx T 10 9 inch lbs CPU Assembly A4 Extractors 2 0515 0372 Pan Head M3 X 0 5 ...

Page 472: ...Cable W21 Rear Panel MP6 1 2190 0102 Lock Washer n a n a n a 1 0590 2332 Hex Nut n a 9 16 Nut Driver 21 inch lbs Fan B1 3 Chassis Side Fan Bracket MP3 4 per 0361 1272 Rivet n a n a n a Front End Assembly A13 Chassis Front Bracket MP8 4 0515 0372 Pan Head M3 X 0 5 8 mm Torx T 10 9 inch lbs Front Frame Assembly A1A1MP1 Chassis Base MP1 4 0515 1035 Flat Head M3 X 0 5 8 mm Torx T 10 9 inch lbs Chassis...

Page 473: ... J1 J2 Chassis Base MP1 2 per 0515 0372 Pan Head M3 X 0 5 8 mm Torx T 10 9 inch lbs Limiter Assembly A23 Chassis Front Bracket MP8 4 0515 0372 Pan Head M3 X 0 5 8 mm Torx T 10 9 inch lbs SW1 SW2 Bracket MP22 1 0515 0372 Pan Head M3 X 0 5 8 mm Torx T 10 9 inch lbs Midplane Assembly A7 Midplane Bracket MP7 6 0515 0375 Pan Head M3 X 0 5 16 mm Torx T 10 9 inch lbs Midplane Bracket MP7 Chassis Sides In...

Page 474: ...ad M3 X 0 5 8 mm Torx T 10 9 inch lbs Reference Assembly A16 Chassis Sides Inner MP2 MP4 2 0515 0372 Pan Head M3 X 0 5 8 mm Torx T 10 9 inch lbs RF Switch High Band Preamp Assembly A11 RF Switch High Band Preamp Bracket MP21 4 0515 0372 Pan Head M3 X 0 5 8 mm Torx T 10 9 inch lbs RF Switch High Band Preamp Bracket MP21 Chassis Side Inner MP4 2 0515 0372 Pan Head M3 X 0 5 8 mm Torx T 10 9 inch lbs ...

Page 475: ...515 1227 Flat Head M3 X 0 5 6 mm Torx T 10 9 inch lbs Chassis Front Bracket MP8 2 0515 1227 Flat Head M3 X 0 5 6 mm Torx T 10 9 inch lbs PCB Assemblies 10a 0515 1227 Flat Head M3 X 0 5 6 mm Torx T 10 9 inch lbs Transfer Switch SW2 SW1 SW2 Bracket MP22 3 0515 1940 Pan Head M2 5 X 0 45 6 mm Torx T 8 6 inch lbs YIG Tuned Filter Assembly A12 Chassis Base MP1 4 0515 0372 Pan Head M3 X 0 5 8 mm Torx T 1...

Page 476: ...PU Assembly without A5 disk drive N9038 60212 3 A6 Power Supply Assembly 0950 4934 4 A7 Midplane Assembly W1312 63095 5 A16 Reference Assembly N9020 60188 6 A30 LISN Control Assembly N9038 60027 7 A24 Conducted Filter Assembly N9038 60001 8 A21 RF Preselector Input Assembly N9038 60003 9 A22 Radiated Filter Assembly N9038 60002 10 A14 LO Synthesizer Assembly N9020 60118 11 A15 Front End Control As...

Page 477: ...rdware Figure 17 2 External Hardware Item Description Part Number 1 2 Strap Handle includes screws E8251 60067 3 Screw M4 X 0 7 25 mm 0515 1619 4 Instrument Rear Feet 5041 9611 5 Dress Cover W1312 00119 6 Bottom Feet 5041 9167 6 Bottom Feet Key Lock 5021 2840 ...

Page 478: ...ace and Power Supply Bracket Item Description Part Number 1 Top Brace Assembly N9030 60005 2 Bracket Power Supply W1312 00131 3 Screw M3 X 0 5 8 mm 0515 0372 4 Screw M3 X 0 5 6 mm 0515 1227 5 Screw M3 X 0 5 8 mm 0515 0372 6 Screw M3 X 0 5 6 mm 0515 1227 7 Screw M3 X 0 5 6 mm 0515 1227 ...

Page 479: ...iption Part Numbera a Most current part numbers shown See Table 17 1 for a complete list of part numbers for older instruments 1 CPU Replacement Kit see Table 17 1 2 A4BT1 Battery 3V LI Manganese Dioxide CR2032 1420 0356 3 A4A1 Disk Drive Interconnect Board W1312 63079 4 Screw M3 x 0 5 8 mm 0515 0372 ...

Page 480: ... Number 1 A5 Solid State Disk Drive PC4 64 Bit Windows 7 PC2 32 Bit Windows XP N9020 60202 N9020 60125 2 A5MP1 Disk Drive Tray W1312 40078 3 A5MP2 Disk Drive Rear Panel W1312 00103 4 A5MP3 Disk Drive Assembly Handle 1440 0421 5 Screw M3 x 0 5 8 mm 0515 0372 6 Screw M2 5 x 0 45 5 mm 0515 2219 7 Screw M3 x 0 5 6 mm 0515 1227 ...

Page 481: ...sembly Option C35 N9038 60019 SW1 Cal Switch SPDT Unterminated Latching 3 Port N1810 60077 SW2 Transfer Switch DC 26 5 GHz 4 Port 87222 60026 W4 Cable Ribbon Front End Control A15 J700 to RF Switch High Band Preamp A11 J4 E4410 60160 W25 Cable Semi Rigid RF Input 1 J1 to Atten A A9 Port 1 Standard Option C35 N9038 21302 N9038 21312 W27 Cable Semi Rigid Limiter Assy A23 J103 to Coaxial Switch SW1 P...

Page 482: ...ansfer Switch SW2 Port 3 N9038 21307 W37 Cable Semi Rigid Transfer Switch SW2 Port 4 to RF Switch High Band Preamp A11 J1 N9038 21315 W38 Cable Semi Rigid RF Switch High Band Preamp A11 J2 to Front End Assy A13 J2 N9020 20101 W39 Cable Semi Rigid RF Switch High Band Preamp A11 J3 to YTF A12 Input N9020 20123 W40 Cable Semi Rigid YTF A12 Output to Front End Assy A13 J9 N9020 20124 W43 Cable Semi Ri...

Page 483: ...ated Latching 3 Port N1810 60077 SW2 Transfer Switch DC 50 0 GHz 4 Port 87222 60036 W25 Cable Semi Rigid RF Input 1 J1 to Atten A A9 Port 1 N9038 21331 W28 Cable Semi Rigid Coaxial Switch SW1 Port C to Atten A A9 Port 2 N9038 21332 W29 Cable Semi Rigid Atten A A9 Port 3 to Atten B A10 Port 2 N9038 21337 W30 Cable Semi Rigid Atten B A10 Port 1 to Transfer Switch SW2 Port 1 N9038 21333 W39 Cable Sem...

Page 484: ...ort 1 N9038 21333 W31 Cable Semi Rigid Transfer Switch SW2 Port 2 to RF Presel Input Assy A21 J100 N9038 21334 W36 Cable Semi Rigid RF Presel Input Assy A21 J101 to Transfer Switch SW2 Port 3 N9038 21335 W37 Cable Semi Rigid Transfer Switch SW2 Port 4 to RF Switch High Band Preamp A11 J1 N9038 21336 W38 Cable Semi Rigid RF Switch High Band Preamp A11 J2 to Front End Assy A13 J2 N9038 21339 W39 Cab...

Page 485: ...ut to Front End Assy A13 J11 see Table 17 1 A23 Limiter Assembly Input 2 N9038 60004 J1 Type N Input Connector Assembly Standard N9038 60021 3 5 mm Input Connector Assembly Option C35 N9038 60019 2 4 mm Input Connector Assembly Option 544 N9030 60011 J2 Type N Input Connector Assembly N9038 60021 W1 Cable Ribbon RF Presel Input Assy A21 J602 to Limiter Assy A23 J108 N9038 60009 W5 Cable Ribbon Fro...

Page 486: ...igid Limiter Assy A23 J103 to Coaxial Switch SW1 Port 1 N9038 21301 W38 Cable Semi Rigid RF Switch High Band Preamp A11 J2 to Front End Assy A13 J2 Option 503 508 526 Option 544 N9020 20101 N9038 21339 W40 Cable Semi Rigid YTF A12 Output to Front End Assy A13 J9 Option 503 508 526 Option 544 N9020 20124 N9038 21338 W42 Cable Semi Rigid Reference Assy A16 J702 to Front End Assy A13 J1 N9020 20022 W...

Page 487: ... A15 J700 to RF Switch High Band Preamp A11 J4 E4410 60160 W5 Cable Ribbon Front End Control A15 J102 to Front End Assy A13 J12 E4410 60156 W12 Cable Wire Harness Front End Ctrl A15 J301 to YTF A12 J1 N9020 60059 W14 Cable Coaxial Front End Assy A13 J7 to Front End Ctrl A15 J902 8121 1862 W15 Cable Coaxial Front End Ctrl A15 J901 to Digital IF A3 J15 8121 1919 W16 Cable Coaxial Front End Ctrl A15 ...

Page 488: ...g IF A2 J300 8121 1861 W20 Cable Coaxial Reference Assy A16 J716 to Digital IF A3 J14 8121 1861 W21 Cable Coaxial Rear Panel EXT REF IN to Reference Assy A16 J704 8121 1860 W23 Cable Coaxial Digital IF A3 J17 to Reference Assy A16 J726 8121 1401 W41 Cable Semi Rigid Reference Assy A16 J703 to LO Synth Assy A14 J200 N9038 21306 W42 Cable Semi Rigid Reference Assy A16 J702 to Front End Assy A13 J1 N...

Page 489: ...21 1854 W15 Cable Coaxial Wideband Analog IF A25 J102 to Digital IF A3 J15 8121 1401 W23 Cable Coaxial Digital IF A3 J17 to Wideband Analog IF A25 J805 8121 1401 W50 Cable Coaxial Wideband Analog IF A25 J806 to Reference A16 J726 8121 0152 W51 Cable Coaxial Reference A16 J718 to Wideband Analog IF A25 J301 8121 0152 W52 Cable Coaxial Front End Control A15 J901 to Wideband Analog IF A25 J101 8121 1...

Page 490: ...P600 to SW1 SW2 Control N9038 60010 W31 Cable Semi Rigid Transfer Switch SW2 Port 2 to RF Presel Input Assy A21 J100 Option 503 508 526 Option 544 N9038 21305 N9038 21334 W32 Cable Semi Rigid RF Presel Input Assy A21 J103 to Conducted Filter Assy A24 J402 N9038 21310 W33 Cable Semi Rigid Conducted Filter Assy A24 J401 to RF Presel Input Assy A21 J200 N9038 21310 W34 Cable Semi Rigid RF Presel Inpu...

Page 491: ...510 Keysight N9038A MXE Service Guide Replaceable Parts Hardware Figure 17 14 AIF DIF Cables Figure 17 15 AIF DIF Cables bottom ...

Page 492: ...J102 to Digital IF A3 J15 Option B85 8121 1401 W16 Cable Coaxial Front End Ctrl A15 J900 to Analog IF A2 J100 8121 1865 W17 Cable Coaxial Analog IF A2 J601 to Digital IF A3 J19 8121 8868 W19 Cable Coaxial Reference Assy A16 J711 to Analog IF A2 J300 8121 1861 W20 Cable Coaxial Reference Assy A16 J716 to Digital IF A3 J14 8121 1861 W23 Cable Coaxial Digital IF A3 J17 to Reference Assy A16 J726 8121...

Page 493: ...nalog IF Assembly N9020 60011 2 A3 Digital IF Assembly N9038 60116 3 Screw M3 X 0 5 8 mm 0515 0372 W7 Cable Ribbon Digital IF A3 J100 to Analog IF A2 J820 E4410 60162 A3W1 Cable Assembly Wire Harness Smart Noise Source N9020 60090 a Most current part numbers shown See Table 17 1 for complete list of part numbers for older instruments ...

Page 494: ...e Left inner W1312 00117 4 MP7 Chassis Midplane Bracket W1312 00048 5 MP8 Chassis Front Bracket N9038 00003 6 MP3 Chassis Side Left outer Fan Bracket W1312 00118 7 MP5 Chassis Side Right outer N9020 00014 8 MP6 Rear Panel N9038 00100 9 MP19 Bracket Attenuator A Option 503 508 526 E4449 00103 MP19 Bracket Attenuator A and B Option 544 N9038 01202 10 MP20 Bracket Attenuator B Option 503 508 526 E444...

Page 495: ...A MXE Service Guide Replaceable Parts Hardware Figure 17 18 Cable Hold Downs Item Description Part Number 1 MP57 Cable Hold Down 1 158 mm 5023 1397 2 MP58 Cable Hold Down 2 48 mm 5023 1379 3 Screw M3 X0 5 8 mm 0515 0372 ...

Page 496: ...Keysight N9038A MXE Service Guide 515 Replaceable Parts Hardware Figure 17 19 Motherboard Item Description Part Number 1 A8 Motherboard Assembly N9030 63002 2 Screw M3 X0 5 8 mm 0515 0372 ...

Page 497: ...6 Keysight N9038A MXE Service Guide Replaceable Parts Hardware Figure 17 20 Fan Hardware Item Description Part Number 1 B1 B2 B3 Fan 3160 4199 2 MP15 17 Fan Guard 3160 0281 3 Rivet Fan Mounting 0361 1272 ...

Page 498: ...MI O Ring 18 75 mm ID 8160 1637 3 MP18 Chassis Gusset Input Connector W1312 00093 J1 Type N Input Connector Assembly Standard N9038 60021 3 5 mm Input Connector Assembly Option C35 N9038 60019 2 4 mm Input Connector Assembly Option 544 N9030 60011 W25 Cable Semi Rigid RF Input 1 J1 to Atten A A9 Port 1 Standard Option C35 Option 544 N9038 21302 N9038 21312 N9038 21331 ...

Page 499: ...are Figure 17 22 RF 2 Input Connector Item Description Part Number 1 Screw M3 X 0 5 8 mm long 0515 0372 2 J2MP1 EMI O Ring 18 75 mm ID 8160 1637 J2 Type N Input Connector Assembly N9038 60021 W26 Cable Semi Rigid RF Input 2 J2 to Limiter Assy A23 J102 N9038 21300 ...

Page 500: ...Keysight N9038A MXE Service Guide 519 Replaceable Parts Hardware Figure 17 23 Front Frame Exploded View LED Backlight ...

Page 501: ...el Daughter Board N9038 63005 15 A1MP1 Main Keypad E4410 40100 16 A1MP2 Display Keypad E4410 40101 17 A1MP9 RPG Knob W1312 40017 18 A1MP3 Nameplate Label see Table 17 1 19 A1MP8 LCD Lens Gasket W1312 40006 20 A1MP7 LCD Glass Filter 1000 1513 24 A1A4 Display Backlight Power Supply 0950 5235 26 A1MP19 Shield Front Panel Interface N9020 00051 30 A1MP14 Display Bracket W1312 00145 33 A1A6 Input 2 LED ...

Page 502: ...17 24 Front Frame Parts LED Backlight Item Description Part Number 12 A1MP14 Display Bracket W1312 00145 14 A1A5 Front Panel Daughter Board N9038 63005 26 A1MP19 Shield Front Panel Interface N9020 00051 30 Screw M3 X 0 5 8 mm 0515 0372 33 A1A6 Input 2 LED Board N9038 63006 ...

Page 503: ...ED Backlight Item Description Part Number 9 A1A2 Front Panel Interface Board W1312 60137 10 A1A2MP1 Speaker 9164 0453 11 A1A2MP2 Speaker Foam N9038 40088 21 A1W1 Flex Circuit Front Panel Interface to LCD W1312 60122 23 A1W2 Cable Assembly Wire Harness Front Panel Interface to Backlight Power Supply W1312 60130 ...

Page 504: ...Keysight N9038A MXE Service Guide 523 Replaceable Parts Hardware Figure 17 26 Front Frame Exploded View CCFL Backlight ...

Page 505: ...eaker Foam N9038 40088 15 A1A2MP1 Speaker 9164 0453 16 A1A2 Front Panel Interface Board W1312 63092 17 A1A5 Front Panel Daughter Board N9038 63005 18 A1W1 Flex Circuit Front Panel Interface to LCD W1312 60010 19 A1A3 Liquid Crystal Display 2090 0911 20 A1MP14 Display Bracket W1312 00115 21 A1MP10 13 Cable Clamp 1400 1439 22 A1MP19 Shield Front Panel Interface N9020 00051 24 A1W2 Cable Assembly Wir...

Page 506: ... Display Bracket W1312 00115 21 A1MP10 13 Cable Clamp 1400 1439 22 A1MP19 Shield Front Panel Interface N9020 00051 24 A1W2 Cable Assembly Wire Harness Front Panel Interface to Backlight Power Supply W1312 60113 28 A1MP16 Shield Inverter Assembly Top N9020 00010 29 Screw M3 X 0 5 8 mm 0515 0372 32 Screw M3 X 0 5 8 mm 0515 0372 33 A1A6 Input 2 LED Board N9038 63006 35 A1MP6 Grommet A1W2 0400 0333 ...

Page 507: ...peaker 9164 0453 16 A1A2 Front Panel Interface Board W1312 63092 17 A1A5 Front Panel Daughter Board N9038 63005 18 A1W1 Flex Circuit Front Panel Interface to LCD W1312 60010 21 A1MP10 13 Cable Clamp 1400 1439 24 A1W2 Cable Assembly Wire Harness Front Panel Interface to Backlight Power Supply W1312 60113 25 A1MP17 Shield Inverter Assembly Bottom N9020 00011 26 A1A4 Display Backlight Power Supply 09...

Page 508: ...e 534 RF Area Option 503 508 526 on page 536 RF Area Option 544 on page 554 RF Front End Assembly on page 570 Front End Control Assembly on page 575 LO Synthesizer Assembly on page 577 Radiated Filter Assembly on page 579 RF Preselector Input Assembly on page 581 Conducted Filter Assembly on page 582 LISN Control Assembly on page 583 Wideband Analog IF and Wideband Digital IF Assemblies on page 58...

Page 509: ...es What You Will Find in This Chapter Fan Assembly on page 614 Input Connector Assembly on page 618 Front Frame Assembly on page 622 Front Frame Assembly Components LED on page 625 Front Frame Assembly Components CCFL Backlight on page 633 Input 2 LED Board on page 642 ...

Page 510: ...trument contains static sensitive components Read the section entitled ESD Information on page 26 Safety The opening of covers or removal of parts is likely to expose dangerous voltages Disconnect the product from all voltage sources while it is being opened The instrument contains potentially hazardous voltages Refer to the safety symbols on the instrument and the general safety considerations at...

Page 511: ... information about post repair procedures If one or more instrument assemblies have been repaired or replaced perform the related adjustments and performance verification tests Hand Tool Size Cable Puller 5021 6773 Nut Driver 3 16 inch Nut Driver 5 16 inch Nut Driver 9 16 inch Open End Wrench 5 16 inch Torque Driver Adjustable Multi Bit Torque Wrench 10 inch lbs 5 16 inch TORX Driver T 8 TORX Driv...

Page 512: ...embly and A3 Digital IF Assembly 2 CPU Assembly 3 A6 Power Supply Assembly 4 A7 Midplane Assembly 5 A16 Reference Assembly 6 A30 LISN Control Assembly 7 A24 Conducted Filter Assembly 8 A21 RF Preselector Input Assembly 9 A22 Radiated Filter Assembly 10 A14 LO Synthesizer Assembly 11 A15 Front End Control Assembly 12 A25 Wideband Analog IF Assembly 13 A26 Wideband Digital IF Assembly ...

Page 513: ... side of the instrument 3 Remove the bottom feet and locks 6 by lifting the tabs on the feet and sliding to disengage from the outer case 4 Using the T 20 driver remove the four screws including washers 3 that hold the rear feet 4 in place 5 Pull the instrument cover 5 off towards the rear of the instrument If the instrument is placed on its face during any of the following procedures be sure to u...

Page 514: ...n the cover should be on the bottom Be sure the cover seats into the gasket groove in the Front Frame Assembly 3 Replace the four rear feet to the rear of the instrument Torque the rear feet screws 0515 1619 and 3050 0893 washers to 21 inch pounds 4 Replace the bottom feet by sliding into place until they snap in Install the locks by pressing in flat 5 Replace the handle straps on both sides of th...

Page 515: ...er to remove the twelve screws 3 0515 0372 attaching the top brace to the chassis Remove the wire hold down 1 as shown in Figure 18 5 Remove the fifteen screws 4 0515 1227 attaching the top brace to the boards 3 To remove the power supply bracket 2 use the T 10 driver to remove the eight screws 5 0515 0372 attaching the power supply bracket to the instrument and the three screws 6 0515 1227 attach...

Page 516: ...d Power Supply Bracket Figure 18 5 Wire Hold Downs Replacement 1 Refer to Figure 18 4 To replace the top brace or the power supply bracket place them into the correct position and attach the screws referred to in the removal process Reinstall wire hold down 1 Torque to 9 inch pounds ...

Page 517: ...03 508 526 To gain access to the attenuators RF Switch High Band Preamp assembly or YTF for removal follow these steps 1 Remove the instrument outer case Refer to the Instrument Outer Case removal procedure 2 Remove the front panel Refer to the Front Frame Assembly removal procedure 3 Remove the top brace Refer to the Top Brace and Power Supply Bracket removal procedure 4 Refer to Figure 18 7 Remo...

Page 518: ...re 18 8 To remove Attenuator A 1 or Attenuator B 2 remove the semi rigid cables W25 W28 W29 W30 and W43 attached to the attenuator using the 5 16 inch wrench 2 Remove the ribbon cable W3 attached to the attenuator 3 Remove the two screws 3 or 4 0515 0372 for each attenuator bracket to remove from the chassis using the T 10 driver 4 Remove the attenuator from the bracket by removing the two screws ...

Page 519: ... Assembly Replacement Procedures RF Area Option 503 508 526 Figure 18 8 Attenuators Removal Option 503 508 526 Item Keysight Part Number W25 N9038 21302 N9038 21312 Option C35 W28 N9038 21303 W29 N9020 20025 W30 N9038 21314 W43 N9038 21304 ...

Page 520: ...ws 0515 0372 Torque to 9 inch pounds 4 Replace the ribbon cable W3 and semi rigid cables W25 W28 W29 W30 and W43 to the attenuator Torque the semi rigid cables to 10 inch pounds 5 Refer to Figure 18 7 Position the Chassis Right Side Outer bracket onto the chassis and replace the eleven screws 0515 0372 Torque to 9 inch pounds 6 Replace the top brace Refer to the Top Brace and Power Supply Bracket ...

Page 521: ...ing the 5 16 inch wrench 3 Refer to Figure 18 10 Remove the three screws 2 0515 0372 using the T 10 driver The RF Switch High Band Preamp assembly 1 can now be removed from the chassis 4 Refer to Figure 18 11 To separate the switch from the bracket remove the four screws 3 0515 0372 using the T 10 driver Figure 18 9 RF Switch High Band Preamp Assembly Cable Removal Option 503 508 526 Item Keysight...

Page 522: ...Keysight N9038A MXE Service Guide 541 Assembly Replacement Procedures RF Area Option 503 508 526 Figure 18 10 RF Switch High Band Preamp Assembly Bracket Removal Option 503 508 526 ...

Page 523: ...542 Keysight N9038A MXE Service Guide Assembly Replacement Procedures RF Area Option 503 508 526 Figure 18 11 RF Switch High Band Preamp Assembly and Bracket Separation Option 503 508 526 ...

Page 524: ...ront of the instrument 3 Refer to Figure 18 9 Replace the semi rigid cables W37 W38 and W39 Torque to 10 inch pounds 4 Replace the ribbon cable W4 Ensure locking tabs on the sides of the connector are engaged 5 Refer to Figure 18 7 Position the Chassis Right Side Outer bracket onto the chassis and replace the sixteen screws 0515 0372 Torque to 9 inch pounds 6 Replace the top brace Refer to the Top...

Page 525: ...3 from the RF Switch High Band Preamp assembly 3 Remove the wire harness W12 4 Refer to Figure 18 13 From the bottom of the instrument remove the four screws 1 0515 0372 The YTF Preselector can now be removed from the chassis may require lifting up slightly on the RF Switch High Band Preamp assembly Figure 18 12 YTF Preselector Removal Option 503 508 526 Item Keysight Part Number W25 N9038 21302 W...

Page 526: ...Keysight N9038A MXE Service Guide 545 Assembly Replacement Procedures RF Area Option 503 508 526 Figure 18 13 YTF Preselector Screws Option 503 508 526 ...

Page 527: ...e pink side exposed Carefully peel off the clear plastic backing and smooth the gap pad into the recess Figure 18 14 Gap Pad Installation 3 Refer to Figure 18 13 Place the YTF Preselector into the chassis with the ports toward the front of the instrument Replace the four screws 1 0515 0372 Torque to 9 inch pounds 4 Figure 18 12 Replace the cables W25 W39 W40 and W43 Torque to 10 inch pounds 5 Repl...

Page 528: ... 503 508 526 Cal Switch and Transfer Switch Option 503 508 526 Removal 1 Refer to Figure 18 15 Remove rigid cables W28 W36 W37 and W43 Figure 18 15 W28 W36 W37 W43 Cable Removal Option 503 508 526 Item Keysight Part Number W28 N9038 21303 W36 N9038 21307 W37 N9038 21315 W43 N9038 21304 ...

Page 529: ...bly Replacement Procedures RF Area Option 503 508 526 2 Refer to Figure 18 16 Remove cables W27 W30 and W31 Figure 18 16 W27 W30 and W31 Cables Removal Option 503 508 526 Item Keysight Part Number W27 N9038 21301 W30 N9038 21314 W31 N9038 21305 ...

Page 530: ...s 1 and remove the switch bracket assembly from the chassis Remove the ribbon cables from the switches Figure 18 17 Switches Bracket Removal Option 503 508 526 4 To separate the Cal Switch 1 from the bracket 5 N9020 80057 remove the two screws 2 0515 1410 To separate the Transfer Switch 3 from the bracket 5 remove the three screws 4 0515 1940 ...

Page 531: ...550 Keysight N9038A MXE Service Guide Assembly Replacement Procedures RF Area Option 503 508 526 Figure 18 18 Bracket Mount to Switch Option 503 508 526 ...

Page 532: ... the two ribbon cables to the switches Torque the SW1 ribbon cable screws to 9 inch lbs 2 Refer to Figure 18 19 Place the switch bracket assembly onto the chassis and use the three screws 1 to attach the bracket to the chassis Torque the screws to 9 inch lbs Figure 18 19 Switches Bracket Replacement Option 503 508 526 ...

Page 533: ... MXE Service Guide Assembly Replacement Procedures RF Area Option 503 508 526 3 Refer to Figure 18 20 Replace cables W27 W30 and W31 Torque to 10 inch lbs Figure 18 20 W27 W30 and W31 Cables Replacement Option 503 508 526 ...

Page 534: ...03 508 526 5 Refer to Figure 18 7 Position the Chassis Right Side Outer bracket onto the chassis and replace the sixteen screws 0515 0372 Torque to 9 inch pounds 6 Replace the top brace Refer to the Top Brace and Power Supply Bracket replacement procedure 7 Replace the front panel Refer to the Front Frame Assembly replacement procedure 8 Replace the instrument outer case Refer to the Instrument Ou...

Page 535: ...F Area Option 544 RF Area Option 544 Refer to Figure 18 22 and Figure 18 23 The RF area consists of A9 Attenuator A A10 Attenuator B A11 RF Switch High Band Preamp assembly A12 YTF SW1 Cal Switch and SW2 Transfer Switch Figure 18 22 RF Area Components and Cables Option 544 ...

Page 536: ...o the attenuators RF Switch High Band Preamp assembly or YTF for removal follow these steps 1 Remove the instrument outer case Refer to the Instrument Outer Case removal procedure 2 Remove the front panel Refer to the Front Frame Assembly removal procedure 3 Remove the top brace Refer to the Top Brace and Power Supply Bracket removal procedure ...

Page 537: ...de Assembly Replacement Procedures RF Area Option 544 4 Refer to Figure 18 24 Remove the Chassis Right Side Outer bracket 1 by removing the eleven screws 2 0515 0372 using the T 10 driver Figure 18 24 Chassis Right Side Outer Option 544 ...

Page 538: ...i rigid cables W25 W28 W29 and W30 attached to the attenuator using the 5 16 inch wrench 2 Remove the ribbon cable W3 attached to the attenuator 3 To remove just the attenuator remove the two screws 3 for each attenuator The attenuator can now be removed from the instrument 4 To remove the attenuator bracket remove the four screws 4 0515 0372 The attenuator bracket can now be removed from the chas...

Page 539: ...ht N9038A MXE Service Guide Assembly Replacement Procedures RF Area Option 544 Figure 18 25 Attenuators Removal Option 544 Item Keysight Part Number W25 N9038 21331 W28 N9038 21332 W29 N9038 21337 W30 N9038 21333 ...

Page 540: ...372 that attach the attenuator to the bracket Torque to 9 inch pounds 4 Replace the ribbon cable W3 and semi rigid cables W25 W28 W29 and W30 to the attenuator Torque the semi rigid cables to 10 inch pounds 5 Refer to Figure 18 24 Position the Chassis Right Side Outer bracket onto the chassis and replace the eleven screws 0515 0372 Torque to 9 inch pounds 6 Replace the top brace Refer to the Top B...

Page 541: ... the 5 16 inch wrench 3 Refer to Figure 18 27 Remove the two screws 2 0515 0372 using the T 10 driver The RF Switch High Band Preamp assembly 1 can now be removed from the chassis 4 Refer to Figure 18 28 To separate the switch from the bracket remove the five screws 3 0515 0372 using the T 10 driver Figure 18 26 RF Switch High Band Preamp Assembly Cable Removal Option 544 Item Keysight Part Number...

Page 542: ...vice Guide 561 Assembly Replacement Procedures RF Area Option 544 Figure 18 27 RF Switch High Band Preamp Assembly Bracket Removal Option 544 Figure 18 28 RF Switch High Band Preamp Assembly and Bracket Separation Option 544 ...

Page 543: ...strument 3 Refer to Figure 18 26 Replace the semi rigid cables W37 W38 and W39 Torque to 10 inch pounds 4 Replace the ribbon cable W4 Ensure locking tabs on the sides of the connector are engaged 5 Refer to Figure 18 24 Position the Chassis Right Side Outer bracket onto the chassis and replace the sixteen screws 0515 0372 Torque to 9 inch pounds 6 Replace the top brace Refer to the Top Brace and P...

Page 544: ...the YTF Preselector 1 2 Remove the wire harness W12 3 Refer to Figure 18 30 From the bottom of the instrument remove the four screws 1 0515 0372 The YTF Preselector can now be removed from the chassis may require lifting up slightly on the RF Switch High Band Preamp assembly Figure 18 29 YTF Preselector Removal Option 544 Item Keysight Part Number W39 N9010 20005 W40 N9038 21338 ...

Page 545: ...564 Keysight N9038A MXE Service Guide Assembly Replacement Procedures RF Area Option 544 Figure 18 30 YTF Preselector Screws ...

Page 546: ...gap pad as shown with the pink side exposed Carefully peel off the clear plastic backing and smooth the gap pad into the recess Figure 18 31 Gap Pad Installation 3 Refer to Figure 18 30 Place the YTF Preselector into the chassis Replace the four screws 1 0515 0372 Torque to 9 inch pounds 4 Figure 18 29 Replace the cables W39 and W40 Torque to 10 inch pounds 5 Replace the wire harness W12 6 Refer t...

Page 547: ... 544 Removal 1 Refer to Figure 18 32 Remove rigid cables W27 W28 W30 W31 W36 W37 W38 W39 and W43 Figure 18 32 Cal Switch and Transfer Switch Cables Option 544 Item Keysight Part Number W27 N9038 21301 W28 N9038 21332 W30 N9038 21333 W31 N9038 21334 W36 N9038 21335 W37 N9038 21336 W38 N9038 21339 W39 N9010 20005 W43 N9038 21304 ...

Page 548: ...embly Replacement Procedures RF Area Option 544 2 Refer to Figure 18 33 Remove the two screws 1 and remove the switch bracket assembly from the chassis Remove the ribbon cables from the switches Figure 18 33 Switches Bracket Removal Option 544 ...

Page 549: ...rocedures RF Area Option 544 3 To separate the Cal Switch 1 from the bracket 5 N9020 80057 remove the two screws 2 0515 1410 To separate the Transfer Switch 3 from the bracket 5 remove the three screws 4 0515 1940 Figure 18 34 Bracket Mount to Switch Option 544 ...

Page 550: ... lbs 3 Refer to Figure 18 32 Replace the semi rigid cables in this order W39 W31 W36 W38 W27 W30 W28 W37 and W43 Torque all cables to 10 inch lbs 4 Refer to Figure 18 24 Position the Chassis Right Side Outer bracket onto the chassis and replace the eleven screws 0515 0372 Torque to 9 inch pounds 5 Replace the top brace Refer to the Top Brace and Power Supply Bracket replacement procedure 6 Replace...

Page 551: ...rument top brace Refer to the Top Brace and Power Supply Bracket removal procedure 3 Remove the front panel Refer to the Front Frame Assembly removal procedure 4 Refer to Figure 18 35 or Figure 18 35 Using the 5 16 inch wrench remove the cables attached to the RF Front End Assembly with the exception of A13W1 and A13W2 5 Remove the W5 ribbon cable from A13J12 Figure 18 35 RF Front End Assembly Cab...

Page 552: ...sight N9038A MXE Service Guide 571 Assembly Replacement Procedures RF Front End Assembly Figure 18 36 RF Front End Assembly Cable Removal Option 544 6 Remove the 50 Ω terminators from RF Front End Assembly ...

Page 553: ...place the RF Front End Assembly into the chassis If you are replacing the Front End Assembly make sure to reinstall the 50 ohm loads onto A13J3 A13J5 and A13J8 Torque to 10 inch pounds 2 Replace the four screws 1 0515 0372 Torque to 9 inch pounds 3 Reattach the cables to A13J1 A13J2 A13J4 A13J6 A13J7 A13J9 on the RF Front End Assembly Torque the semi rigid cables to 10 inch pounds 4 Replace the fr...

Page 554: ... brace Refer to the Top Brace and Power Supply Bracket removal procedure 3 Remove the front panel Refer to the Front Frame Assembly removal procedure 4 Refer to Figure 18 38 Using the 5 16 inch wrench remove the cables W1 W6 W26 and W27 attached to the Limiter Assembly 5 Remove the four screws 1 0515 0372 using the T 10 driver The Limiter Assembly can now be removed from the chassis Figure 18 38 L...

Page 555: ...river Torque to 9 inch pounds 2 Reattach the cables W1 W6 W26 and W27 to the Limiter Assembly Torque the semi rigid cables to 10 inch pounds 3 Replace the front panel Refer to the Front Frame Assembly replacement procedure 4 Replace the instrument top brace Refer to the Top Brace and Power Supply Bracket replacement procedure 5 Replace the instrument outer case Refer to the Instrument Outer Case r...

Page 556: ...Control Assembly Removal 1 Remove the instrument outer case Refer to the Instrument Outer Case removal procedure 2 Remove the instrument top brace Refer to the Top Brace and Power Supply Bracket removal procedure 3 Refer to Figure 18 39 Locate the Front End Control assembly 1 Figure 18 39 Assembly Locations ...

Page 557: ...nect from the motherboard and lift out of the chassis Figure 18 40 Front End Control Cables Replacement 1 Refer to Figure 18 40 Install the Front End Control assembly into the correct slot in the chassis Use the ejector and press down to plug it into the motherboard 2 Reattach the coaxial cables W14 W15 W16 and W22 to the Front End Control Assembly 3 Reattach the ribbon cables W3 W4 W5 and W12 to ...

Page 558: ...ocedure 2 Remove the instrument top brace Refer to the Top Brace and Power Supply Bracket removal procedure 3 Refer to Figure 18 41 Locate the LO Synthesizer assembly 2 4 Remove the cables W41 and W44 from the LO Synthesizer assembly 2 using the 5 16 inch wrench 5 Pull up on the LO Synthesizer assembly to unplug from the motherboard and lift out of the chassis Figure 18 41 LO Synthesizer Assembly ...

Page 559: ...bly into slot 10 in the chassis and press down to connect to the motherboard 2 Reattach the cables W41 and W44 to the LO Synthesizer assembly Torque to 10 inch pounds 3 Replace the instrument top brace Refer to the Top Brace and Power Supply Bracket replacement procedure 4 Replace the instrument outer case Refer to the Instrument Outer Case replacement procedure ...

Page 560: ...e Top Brace and Power Supply Bracket removal procedure 3 Refer to Figure 18 39 Locate the Radiated Filter assembly 3 4 Refer to Figure 18 42 Remove cable W34 using the 5 16 inch wrench Figure 18 42 Radiated Filter RF Preselector Input and Conducted Filter Cables 5 The Radiated Filter assembly can now be unplugged from the motherboard by using the ejector on the Radiated Filter assembly to disconne...

Page 561: ... the chassis and press down to plug it into the motherboard using the ejector to push into place 2 Refer to Figure 18 42 Replace cable W34 Torque to 10 inch pounds 3 Replace the top brace Refer to the Top Brace and Power Supply Bracket replacement procedure 4 Replace the instrument outer case Refer to the Instrument Outer Case replacement procedure ...

Page 562: ...rench 5 Remove ribbon cables W1 and W2 6 The RF Preselector Input assembly can now be unplugged from the motherboard by using the ejector on the RF Preselector Input assembly to disconnect from the motherboard and lift out of the chassis Replacement 1 Slide the RF Preselector Input assembly into the chassis and press down to plug it into the motherboard using the ejector to push into place 2 Refer...

Page 563: ... the 5 16 inch wrench 5 The Conducted Filter assembly can now be unplugged from the motherboard by using the ejector on the Conducted Filter assembly to disconnect from the motherboard and lift out of the chassis Replacement 1 Slide the Conducted Filter assembly into the chassis and press down to plug it into the motherboard using the ejector to push into place 2 Refer to Figure 18 42 Replace cabl...

Page 564: ... Case removal procedure 2 Remove the top brace Refer to the Top Brace and Power Supply Bracket removal procedure 3 Refer to Figure 18 43 Locate the LISN Control assembly 2 4 Remove cable W9 from the LISN Control assembly 5 Using the board extractors pull up on the LISN Control assembly to unplug from the motherboard and lift out of the chassis Figure 18 43 LISN Control Assembly Removal ...

Page 565: ... the LISN Control assembly and insert it into the same slot in the chassis and press down to plug it into the motherboard 2 Reattach cable W9 to the LISN Control assembly 3 Replace the top brace Refer to the Top Brace and Power Supply Bracket replacement procedure 4 Replace the instrument outer case Refer to the Instrument Outer Case replacement procedure ...

Page 566: ...al procedure 2 Remove the top brace Refer to the Top Brace and Power Supply Bracket removal procedure 3 Refer to Figure 18 44 Locate the A25 Wideband Analog IF and the A26 Digital IF assemblies 4 Remove cables W15 W23 W50 W51 and W52 from the Wideband Analog IF assembly 5 Remove ribbon cable W10 6 The Wideband Analog IF and Wideband Digital IF assemblies can now be removed by pulling up on the eje...

Page 567: ...otherboard 2 Slide the Wideband Digital IF assembly into slot 5 in the chassis and use the ejectors to push into place into the motherboard 3 Refer to Figure 18 44 Reinstall cables W15 W23 W50 W51 and W52 to the Wideband Analog IF assembly 4 Reattach ribbon cable W10 5 Replace the top brace Refer to the Top Brace and Power Supply Bracket replacement procedure 6 Replace the instrument outer case Re...

Page 568: ...ce and Power Supply Bracket removal procedure 3 Refer to Figure 18 39 Locate the Reference assembly 6 4 Refer to Figure 18 45 Remove cables W41 W42 and W43 from the reference assembly using the 5 16 inch wrench 5 Remove cables W18 W19 W20 W21 and W23 from the Reference assembly 6 Figure 18 45 Reference Board Cables 6 Remove the two screws 1 7 Remove the Reference board by pulling up to disconnect ...

Page 569: ...er to Figure 18 45 Replace the two screws 1 Torque to 9 inch pounds 3 Replace cables W41 W42 and W43 to the correct locations Torque to 10 inch pounds 4 Replace cables W18 W19 W20 W21 and W23 to the correct locations 5 Replace the top brace Refer to the Top Brace and Power Supply Bracket replacement procedure 6 Replace the instrument outer case Refer to the Instrument Outer Case replacement proced...

Page 570: ...to Figure 18 39 Locate the Midplane Board assembly 7 4 Remove the processor assembly Refer to the CPU Assembly removal procedure 5 Remove the rear panel Refer to the Rear Panel removal procedure 6 Remove the power supply assembly Refer to the Power Supply Assembly removal procedure 7 Refer to Figure 18 46 Remove the six screws 2 0515 0375 attaching the midplane board assembly 1 to the midplane bra...

Page 571: ...ved earlier Torque to 9 inch pounds 2 Replace the power supply assembly Refer to the Power Supply Assembly replacement procedure 3 Replace the rear panel Refer to the Rear Panel replacement procedure 4 Replace the processor assembly Refer to the CPU Assembly replacement procedure 5 Replace the top brace Refer to the Top Brace and Power Supply Bracket replacement procedure 6 Replace the instrument ...

Page 572: ...to Figure 18 47 Remove W21 2 cable from the rear panel using the 9 16 inch nut driver 3 If present remove W9 5 from the rear panel using the 3 16 nut driver 4 If present remove W22 3 from the rear panel using the 5 16 nut driver 5 Using the T 10 driver remove the sixteen screws 4 0515 0372 attaching the rear panel 1 to the chassis The rear panel can now be removed Figure 18 47 Rear Panel Removal ...

Page 573: ... 5 from the rear panel Torque to 9 inch pounds using the 3 16 nut driver 3 If present reattach W22 3 from the rear panel Torque to 10 inch pounds using the 5 16 nut driver 4 Place the rear panel into position in the chassis Replace the sixteen screws 0515 0372 to attach the rear panel to the chassis Torque to 9 inch pounds 5 Replace the instrument outer case Refer to the Instrument Outer Case repl...

Page 574: ... Refer to the Instrument Outer Case removal procedure 2 Remove the rear panel Refer to the Rear Panel removal procedure 3 Refer to Figure 18 48 Remove the three screws 1 0515 1227 attaching the power supply to the chassis 4 The power supply assembly can be removed from the chassis by pulling straight out the back Figure 18 48 Power Supply Assembly Removal ...

Page 575: ...t and push on the assembly to mate the connectors to the midplane assembly 2 Refer to Figure 18 48 Replace the three screws 1 0515 1227 through the power supply bracket and into the power supply Torque to 9 inch pounds 3 Replace the rear panel Refer to the Rear Panel replacement procedure 4 Replace the instrument outer case Refer to the Instrument Outer Case replacement procedure ...

Page 576: ... to pull the CPU assembly out from the chassis Figure 18 49 CPU Assembly Removal Replacement 1 Slide the CPU assembly into the slot at the rear of the instrument and push on the assembly to mate the connectors to the midplane assembly Secure the board with the ejectors 2 Refer to Figure 18 49 Replace the six screws 1 0515 0372 that attach the CPU assembly to the chassis Torque to 9 inch pounds If ...

Page 577: ...er the drive is replaced For information on how to backup this data see the Calibration Data Backup and Restore section in Chapter 19 Post Repair Procedures of this manual If this data cannot be backed up because the instrument will not fully boot go ahead and change the A5 Disk Drive and perform all adjustments listed in Chapter 19 Post Repair Procedures for the A5 assembly Electrostatic discharg...

Page 578: ... Assembly Replacement Procedures Disk Drive 3 Refer to Figure 18 50 Locate and remove the existing disk drive carrier assembly 2 from the instrument by loosening the rear panel screw 1 Figure 18 50 Removing the Disk Drive Carrier Assembly ...

Page 579: ...8A MXE Service Guide Assembly Replacement Procedures Disk Drive 4 Refer to Figure 18 51 Remove the 4 machine screws 1 0515 0372 from the disk drive carrier assembly that secure the drive 2 Figure 18 51 Disk Drive Screws ...

Page 580: ...sk drive onto the carrier assembly and attach with the 4 machine screws 1 0515 0372 Torque to 9 in pounds 7 Refer to Figure 18 50 Replace the disk drive carrier assembly 2 into the instrument and tighten the screw to 9 in pounds 8 Refer to Chapter 19 Post Repair Procedures and perform all of the specified tasks for replacing the A5 Disk Drive assembly ...

Page 581: ... the instrument Refer to the Disk Drive removal procedure 2 Remove the A4 CPU assembly from the instrument Refer to the CPU Assembly removal procedure 3 Refer to Figure 18 52 Remove the A4 CPU assembly cover 1 by first removing the 19 flat head screws 2 0515 1227 and 3 pan head screws 3 0515 0372 Figure 18 52 A4A1 Disk Drive Interconnect Board Removal ...

Page 582: ...ect board 5 into the A4 CPU assembly by carefully sliding it into place from the disk drive bay opening 6 2 Install the 2 screws 4 0515 0372 that secure the A4A1 Disk Drive Interconnect board to the A4 CPU assembly and torque them to 9 inch pounds 3 Replace the A4 CPU assembly cover 1 and attach it with the 19 flat head screws 2 0515 1227 and the 3 pan head screws 3 0515 0372 Torque all screws to ...

Page 583: ... the Instrument Outer Case removal procedure 2 Remove the rear panel Refer to the Rear Panel removal procedure 3 Refer to Figure 18 53 Remove cable W15 W17 W20 and W23 from the bottom of the DIF assembly Figure 18 53 DIF Cables 4 Refer to Figure 18 54 Pull the AIF DIF assembly part way out of the chassis Remove cables W16 W17 and W19 from the AIF assembly ...

Page 584: ...Keysight N9038A MXE Service Guide 603 Assembly Replacement Procedures AIF DIF Assembly Figure 18 54 AIF Cables 5 The AIF DIF assembly can be removed from the chassis by pulling straight out the back ...

Page 585: ...cable W7 from the AIF assembly 2 Refer to Figure 18 55 From underneath the assembly remove the three screws 3 0515 0372 Figure 18 55 AIF DIF Separation 1 To pair the AIF and DIF together again set the DIF in position over the AIF Reinstall the three screws 0515 0372 removed before Torque to 9 inch pounds starting with the middle screw 2 Reconnect the ribbon cable W7 ...

Page 586: ...assembly to mate the connectors to the motherboard assembly 2 Refer to Figure 18 54 Replace cables W16 W17 and W19 to the AIF assembly 3 Refer to Figure 18 53 Replace cable W15 W17 W20 and W23 to the bottom of the DIF assembly 4 Replace the rear panel Refer to the Rear Panel replacement procedure 5 Replace the instrument outer case Refer to the Instrument Outer Case replacement procedure ...

Page 587: ...d Control Assembly removal procedure 9 Remove the LO Synthesizer assembly Refer to the LO Synthesizer Assembly removal procedure 10 Remove the Radiated Filter assembly Refer to the Radiated Filter Assembly removal procedure 11 Remove the RF Preselector Input assembly Refer to the RF Preselector Input Assembly removal procedure 12 Remove the Conducted Filter assembly Refer to the Conducted Filter A...

Page 588: ...rboard Assembly 19 Remove the fan assembly Refer to the Fan Assemblyremoval procedure 20 Refer to Figure 18 56 and Figure 18 57 Remove the midplane bracket 1 by removing the eight screws 2 0515 0372 two on each side and four on the bottom Figure 18 56 Midplane Bracket Removal ...

Page 589: ...608 Keysight N9038A MXE Service Guide Assembly Replacement Procedures Motherboard Assembly Figure 18 57 Bottom Screws ...

Page 590: ...uide 609 Assembly Replacement Procedures Motherboard Assembly 21 Refer to Figure 18 58 Remove the left side chassis 1 same side as the fan by removing the nine screws 2 0515 0372 six on the bottom Figure 18 58 Chassis Side Removal ...

Page 591: ...l Replacement 1 Refer to Figure 18 59 Place the motherboard 1 on standoffs and slide into position in the chassis and replace the four screws 2 0515 0372 Torque to 9 inch pounds 2 Refer to Figure 18 58 Replace the left side chassis by replacing the nine screws 0515 0372 Torque to 9 inch pounds 3 Refer to Figure 18 56 Replace the midplane bracket 1 by replacing the eight screws 2 0515 0372 Torque t...

Page 592: ...onducted Filter assembly Refer to the Conducted Filter Assembly replacement procedure 11 Replace the LISN Control assembly Refer to the LISN Control Assembly replacement procedure 12 Replace cable W35 Refer to the W35 Removal procedure 13 Replace the Reference assembly Refer to the Reference Assembly replacement procedure 14 Replace the Wideband Analog IF and Wideband Digital if assemblies Refer t...

Page 593: ...e Outer bracket Refer to Figure 18 7 on page 537 Torque the screws to 9 inch pounds 21 Replace the Front Frame Assembly Refer to the Front Frame Assembly replacement procedure 22 Replace the top brace and reference bracket Refer to the Top Brace and Power Supply Bracket replacement procedure 23 Replace the instrument outer case Refer to the Instrument Outer Case replacement procedure ...

Page 594: ... 1 Refer to Figure 18 60 To remove cable W35 pinch the retainer clips on both ends of the cable and slide the retainers away from the connections as shown in Figure 18 61 2 Replace W35 by pressing into place until the retainers click into place Figure 18 60 W35 Location Figure 18 61 W35 Removal ...

Page 595: ...ument Outer Case removal procedure 2 Remove the top brace Refer to the Top Brace and Power Supply Bracket removal procedure 3 Remove the Front Frame Assembly Refer to the Front Frame Assembly removal procedure 4 Refer to Figure 18 62 Remove the twelve remaining screws 1 0515 0372 that attach the fan assembly to the chassis Figure 18 62 Fan Assembly Removal ...

Page 596: ...038A MXE Service Guide 615 Assembly Replacement Procedures Fan Assembly 5 Refer to Figure 18 63 Unplug the fan wires from the motherboard The fan assembly can now be lifted from the chassis Figure 18 63 Fan Wires ...

Page 597: ...s may need to be cut or pushed out from behind They are not reusable Figure 18 64 Fan Replacement 2 Position the new fan on the work surface with the arrows pointing to the right and down 3 Orient the fan guard so that the rings are on the outside and that the V of the support legs are pointing to the neighboring fan 4 With the rivets center posts raised snap the rivets into place through the fan ...

Page 598: ...place the twelve screws 1 0515 0372 to attach the fan assembly to the chassis Ensure the fan wires are not pinched Torque to 9 inch pounds 3 Replace the Front Frame Assembly Refer to the Front Frame Assembly replacement procedure 4 Replace the top brace Refer to the Top Brace and Power Supply Bracket replacement procedure 5 Replace the instrument outer case Refer to the Instrument Outer Case repla...

Page 599: ...uter Case removal procedure 2 Remove the Front Frame Assembly Refer to the Front Frame Assembly removal procedure 3 Refer to Figure 18 65 Disconnect the semi rigid cable W25 from the J1 Input Connector Assembly Figure 18 65 RF 1 Input Connector Assembly Removal 4 Remove the two screws 1 0515 0372 that attach the Input Connector Assembly to the chassis The connector assembly can now be lifted from ...

Page 600: ...is Replace the two screws 1 0515 0372 to attach the Input Connector Assembly to the chassis Torque to 9 inch pounds 2 Reconnect the semi rigid cable W25 to the Input Connector Assembly Torque to 10 inch pounds 3 Replace the Front Frame Assembly Refer to the Front Frame Assembly replacement procedure 4 Replace the instrument outer case Refer to the Instrument Outer Case replacement procedure ...

Page 601: ...oval procedure 2 Remove the Front Frame Assembly Refer to the Front Frame Assembly removal procedure 3 Refer to Figure 18 66 Disconnect the semi rigid cable W26 from the J2 Input Connector Assembly Figure 18 66 RF 2 Input Connector Assembly Removal 4 Remove the two screws 1 0515 0372 that attach the Input Connector Assembly to the chassis The connector assembly can now be lifted from the chassis ...

Page 602: ...is Replace the two screws 1 0515 0372 to attach the Input Connector Assembly to the chassis Torque to 9 inch pounds 2 Reconnect the semi rigid cable W25 to the Input Connector Assembly Torque to 10 inch pounds 3 Replace the Front Frame Assembly Refer to the Front Frame Assembly replacement procedure 4 Replace the instrument outer case Refer to the Instrument Outer Case replacement procedure ...

Page 603: ...18 67 3 Refer to Figure 18 67 Using the T 10 driver remove the eight screws 2 0515 1035 four on each side to detach the Front Frame Assembly from the chassis 4 Refer to Figure 18 68 Pull the Front Frame Assembly carefully away from the chassis Remove the ribbon cable W8 from the motherboard The cable has locking tabs on each side pinch and pull to release 5 Refer to Figure 18 68 Remove W6 from the...

Page 604: ...Keysight N9038A MXE Service Guide 623 Assembly Replacement Procedures Front Frame Assembly Figure 18 68 Front Panel Cable ...

Page 605: ...ssis Ensure no cables are crushed Replace the eight screws 2 0515 1035 four on each side of the chassis Torque to 9 inch pounds 4 If Option EXM is installed reconnect the semi rigid cables 1 as shown in Figure 18 69 Figure 18 69 EXM Cables 5 Replace the outer case Refer to the Instrument Outer Case replacement procedure Be sure to hold the connector on the end of W45 still when tightening this con...

Page 606: ...ssembly Components LED Figure 18 70 Front Frame Parts LED Access to any of the Front Frame assemblies requires removal of the Front Frame Assembly from the chassis Item Description 12 A1MP14 Display Bracket 14 A1A5 Front Panel Daughter Board 26 A1MP19 Shield Front Panel Interface 33 A1A6 Input 2 LED Board ...

Page 607: ...nt Frame Assembly Figure 18 71 Front Frame Parts shields off LED Item Description 9 A1A2 Front Panel Interface Board 10 A1A2MP1 Speaker 11 A1A2MP2 Speaker Foam 21 A1W1 Flex Circuit Front Panel Interface to LCD 23 A1W2 Cable Assembly Wire Harness Backlight Power Supply to LCD ...

Page 608: ...Keysight N9038A MXE Service Guide 627 Assembly Replacement Procedures Front Frame Assembly Figure 18 72 Front Frame Exploded View LED ...

Page 609: ...el Interface Board 10 A1A2MP1 Speaker 11 A1A2MP2 Speaker Foam 12 A1A3 Liquid Crystal Display LED backlight 14 A1A5 Front Panel Daughter Board 15 A1MP1 Main Keypad 16 A1MP2 Display Keypad 17 A1MP9 RPG Knob 18 A1MP3 Nameplate Label 8 4 GHz or 26 5 GHz 19 A1MP8 LCD Lens Gasket 20 A1MP7 LCD Glass Filter 24 A1A4 Display Backlight Power Supply 26 A1MP19 Shield Front Panel Interface 30 A1MP14 Display Bra...

Page 610: ...038A MXE Service Guide 629 Assembly Replacement Procedures Front Frame Assembly Figure 18 73 Front Frame Assembly Shields LED Item Description 1 A1MP19 Shield Front Panel Interface 28 Screw M3 X 0 5 5 mm 0515 0372 ...

Page 611: ...rame Assembly The display can now be removed from the Front Frame Assembly 4 Refer to Figure 18 75 To separate the LCD 2 from the display bracket 1 remove the four screws 3 0515 0367 When reassembling torque the four screws to 5 inch pounds 5 To separate the DC to DC Converter 4 from the display bracket 1 remove the two screws 5 When reassembling torque the two screws to 9 inch pounds Once the dis...

Page 612: ...on Replacement 1 Refer to Figure 18 74 Place the display bracket into position in the Front Frame Assembly Reconnect the flex circuit A1W1 1 and A1W3 2 to the front panel interface board 4 2 Replace the screw 3 0515 0372 that secures the display bracket to the Front Frame Assembly Torque to 9 inch pounds 3 Replace the front panel shield ...

Page 613: ...Assembly 5 To separate the keypad from the Front Panel Interface board use a push tool or pliers to carefully separate the pull through tabs Replacement 1 Install the keypad onto the Front Panel Interface board using the pull through tabs and alignment holes Use a push tool or pliers to ensure that all of the pull through tabs are properly captive on the board 2 Install the A1A2 Front Panel Interf...

Page 614: ...val of the Front Frame Assembly from the chassis Item Description 17 A1A5 Front Panel Daughter Board 20 A1MP14 Display Bracket 21 A1MP10 13 Cable Clamp 22 A1MP19 Shield Front Panel Interface 24 A1W2 Cable Assembly Wire Harness Front Panel Interface to Backlight Power Supply 28 A1MP16 Shield Inverter Assembly Top 29 Screw M3 X 0 5 8 mm 0515 0372 32 Screw M3 X 0 5 8 mm 0515 0372 33 A1A6 Input 2 LED ...

Page 615: ...eaker Foam 15 A1A2MP1 Speaker 16 A1A2 Front Panel Interface Board 17 A1A5 Front Panel Daughter Board 18 A1W1 Flex Circuit Front Panel Interface to LCD 21 A1MP10 13 Cable Clamp 24 A1W2 Cable Assembly Wire Harness Front Panel Interface to Backlight Power Supply 25 A1MP17 Shield Inverter Assembly Bottom 26 A1A4 Display Backlight Power Supply 31 Screw M3 X 0 5 5 mm 0515 1521 33 Screw M3 X 0 5 8 mm 051...

Page 616: ...Keysight N9038A MXE Service Guide 635 Assembly Replacement Procedures Front Frame Assembly Figure 18 78 Front Frame Exploded View CCFL Backlight ...

Page 617: ...13 A1MP1 Main Keypad 14 A1A2MP2 Speaker Foam 15 A1A2MP1 Speaker 16 A1A2 Front Panel Interface Board 17 A1A5 Front Panel Daughter Board 18 A1W1 Flex Circuit Front Panel Interface to LCD 19 A1A3 Liquid Crystal Display 20 A1MP14 Display Bracket 21 A1MP10 13 Cable Clamp 22 A1MP19 Shield Front Panel Interface 24 A1W2 Cable Assembly Wire Harness Front Panel Interface to Backlight Power Supply 25 A1MP17 ...

Page 618: ...A MXE Service Guide 637 Assembly Replacement Procedures Front Frame Assembly Figure 18 79 Front Frame Assembly Shields CCFL Backlight Item Description 28 Screw M3 X 0 5 5 mm 0515 0372 32 Screw M3 X 0 5 8 mm 0515 0372 ...

Page 619: ...2 0515 0372 securing the Inverter board 3 The Inverter board and inverter bottom shield can now be removed Figure 18 80 Inverter Board Removal CCFL Backlight Replacement 1 Place the Inverter board into the inverter bottom shield and position onto the display bracket Replace the two screws 0515 0372 Torque to 9 inch pounds 2 Reattach the wires to their correct locations 3 Place the inverter top shi...

Page 620: ...front panel interface board 4 Figure 18 81 Display Removal CCFL Backlight 5 Remove the two screws 2 0515 0372 securing the display bracket 3 to the Front Frame Assembly The display can now be removed from the Front Frame Assembly 6 Refer to Figure 18 82 To separate the LCD 1 from the display bracket 2 remove the four screws 3 0515 0367 When reassembling torque the four screws to 5 inch pounds Once...

Page 621: ... CCFL Backlight Replacement 1 Refer to Figure 18 81 Place the display bracket into position in the Front Frame Assembly Reconnect the flex circuit A1W1 2 to the front panel interface board 4 2 Replace the two screws 2 0515 0372 that secure the display bracket to the Front Frame Assembly Torque to 9 inch pounds 3 Replace the Inverter board ...

Page 622: ... Frame Assembly 5 To separate the keypad from the Front Panel Interface board use a push tool or pliers to carefully separate the pull through tabs Replacement 1 Install the keypad onto the Front Panel Interface board using the pull through tabs and alignment holes Use a push tool or pliers to ensure that all of the pull through tabs are properly captive on the board 2 Install the A1A2 Front Panel...

Page 623: ...ews 1 0515 0365 2 Remove the LED bracket 4 by removing the single screw 3 from the front frame Figure 18 83 LED 2 Board Removal Replacement 1 Refer to Figure 18 83 Place the LED board bracket 4 into position in the Front Frame Assembly Secure it with the single screw 3 Torque to 9 inch pounds 2 Place the LED board 2 onto the bracket and secure with two screws 1 0515 0372 Torque to 3 inch pounds ...

Page 624: ... adjustments and or performance tests must be executed after replacing an assembly Before Starting There are three things you should do before starting any of the procedures listed or described in this chapter Familiarize yourself with the safety symbols and read the general safety considerations and the safety note definitions in the front of this guide before you begin the procedures in this cha...

Page 625: ...mended adjustments and or performance verification tests doesn t guarantee all published specifications are being met Only a full instrument calibration will do this The following procedures are also included in the Calibration Data Backup and Restore on page 647 Calibration Data Backup and Restore on page 647 BIOS Settings Verification on page 651 Operating System Initialization on page 652 FPGA ...

Page 626: ...cy Response X X X X X RBW Selectivity CISPR Bands X X X Phase Noise X X X Absolute Amplitude Accuracy at 50 MHz X X X X X X X X X X X X X X X X Input Attenuation Switching Uncertainty X Display Scale Fidelity X X X Frequency Response Above 3 6 GHz Preamp On X X X X X X X X X Spurious Response X X X X X X X X X X X X X X Frequency Response Above 3 6 GHz Preamp Off X X X X X X X X X Second Harmonic ...

Page 627: ...646 Keysight N9038A MXE Service Guide Post Repair Procedures Post Repair Procedures ...

Page 628: ...edure to be run will depend on whether the software will run or not If the Instrument Software Application Will Run 1 Connect a USB keyboard and mouse to two of the instrument rear panel USB ports 2 Connect a USB FLASH drive to one of the front panel USB port 3 Press System Alignments Backup or Restore Align Data 4 The Alignment Data Wizard window as shown in Figure 19 1 will appear While the back...

Page 629: ...8 Keysight N9038A MXE Service Guide Post Repair Procedures Post Repair Procedures Figure 19 1 Alignment Data Wizard 5 Follow the on screen instruction to backup the calibration data to the USB FLASH drive ...

Page 630: ...anel USB ports 2 Connect a USB FLASH drive to the other front panel USB port 3 Using the mouse go to Start Computer and navigate to the following folder C Program Files Agilent SignalAnalysis Infrastructure 4 Double click on BackupRestoreAlignDataWizard and the window shown in Figure 19 1 will appear 5 Follow the on screen instructions to backup the calibration data to the USB FLASH drive ...

Page 631: ... was earlier used to backup the instrument calibration file and insert it into one of the instrument front panel USB ports 3 Restore the instrument calibration data by pressing System Alignments Backup or Restore Align Data The Alignment Data Wizard window as shown in Figure 19 1 will appear 4 Follow the on screen instruction to restore the previously saved calibration data from the USB FLASH driv...

Page 632: ...not boot up or operate correctly Default BIOS Settings 1 Connect an external USB keyboard to one of the front panel USB ports 2 Turn on instrument power 3 Confirm Keysight Technologies splash screen comes up within a few seconds 4 Press the key on the keyboard specified on the initial boot screen to enter the setup utility 5 Navigate to the Exit screen and select Restore Defaults or Load Setup Def...

Page 633: ...take just a few minutes to complete and will require very little user interaction Initialization 1 With the new disk drive installed power the instrument on 2 Within a few seconds you will see the initial Keysight Technologies splash screen and then the boot selection menu as seen in Figure 19 2 3 Allow the instrument to boot the Windows operating system This will happen automatically after 5 seco...

Page 634: ...ument will now reboot and complete the initialization process Once this process has completed the Anti Virus Message will appear as shown in Figure 19 4 At this point the operating system initialization process will be completed and either selection can be made or the instrument can be powered off If the initialization process would like to be postponed select Do Not Agree at this time to safely s...

Page 635: ...654 Keysight N9038A MXE Service Guide Post Repair Procedures Post Repair Procedures Figure 19 4 Anti Virus Message 7 The disk drive in use is now ready for further configuration ...

Page 636: ...and will update them to the correct revision 1 Close the instrument application software by pressing File Exit Enter using the front panel keys 2 Connect a USB mouse to one of the instrument front panel USB ports 3 Using the mouse go to Start Computer and navigate to the following folder C Program Files Agilent SignalAnalysis Physics 4 In this folder find and execute the file named FPGA_Prog bat 5...

Page 637: ...ity 6 To program the FPGA code enter 1 and press Enter You will need to confirm this selection by pressing 1 and Enter one more time 7 The programming of the FPGA code could take a few minutes to complete Once it has finished the instrument will reboot itself to use the new code and this process will then be completed ...

Page 638: ... capability that was available prior to the A7 Midplane board assembly replacement To program the model and serial numbers into a replacement A7 Midplane board assembly the N7818A Keysight MXE EMI Receiver Calibration Application Software will be required Information regarding N7818A Keysight MXE EMI Receiver Calibration Application Software can be found at http www keysight com find calibrationso...

Page 639: ...658 Keysight N9038A MXE Service Guide Post Repair Procedures Post Repair Procedures ...

Page 640: ...9038A MXE Signal Analyzer Service Guide 20 Instrument Software What You Will Find in This Chapter Instrument Software Overview on page 660 Software Licensing on page 660 Software Updates on page 661 Instrument Measurement Application Software on page 661 ...

Page 641: ...ting the application model number and description you will also see the revision of each However the complete package itself also has a revision associated with it which can also be found on this screen as the Instrument S W Revision Since the instrument application software is distributed in one complete package when an update is installed they are all updated at the same time One of the benefits...

Page 642: ...ftware Updates Instrument Measurement Application Software Updates are installed much like most other types of commercial software packages The latest revision of the software along with complete installation instructions can be downloaded from www keysight com find mxe_software ...

Page 643: ...662 Keysight N9038A MXE Service Guide Instrument Software Software Updates ...

Page 644: ...in an automated test software package The automatic execution of the full set of performance tests will take between six and eight hours to complete Performance tests are designed to test an instrument operating within the operational temperature range defined by the instrument specifications A complete list of the performance verification tests can be found at http cal software keysight com Adjus...

Page 645: ...erification and Adjustment Software Test Software Overview Required Test Equipment A complete list of test equipment required to perform both the performance verification testing as well as all adjustments can be found at http cal software keysight com ...

Page 646: ...l DANL on page 671 Frequency Readout Accuracy on page 675 Second Harmonic Distortion SHD on page 678 Amplitude Accuracy at 50 MHz on page 681 Amplitude Accuracy Preamp On on page 686 Frequency Response Flatness on page 690 Frequency Response Flatness Preamp On on page 696 Scale Fidelity on page 702 CISPR Resolution Bandwidth Shape Accuracy on page 705 Quasi Peak Detector Accuracy on page 709 Peak ...

Page 647: ...tion tests Functional tests use limits that are wider than the published specifications measurement uncertainty analysis is not available for functional tests Performance verification tests span a wide range of instrument parameters and provide the highest level of confidence that the instrument conforms to published specifications These tests can be time consuming and require extensive test equip...

Page 648: ...ications 4 Ensure that the analyzer s frequency reference is set to Internal a Press the Input Output More Freq Ref In keys b If the Freq Ref In softkey does not show Internal press the Freq Ref In softkey and select Internal 5 Following instrument warm up perform the auto align routine Press System Alignments Align Now All 6 Run the EMI receiver internal RF preselector alignments by pressing Syst...

Page 649: ... 5 mm m 1 Frequency 10 MHz to 18 GHz VSWR 1 1 1 1250 1743 Adapter Type N m to 3 5 mm f 1 Frequency 10 MHz to 1 51 GHz VSWR 1 1 1 1250 1744 Adapter Type N m to BNC f 1 Frequency 10 MHz to 80 MHz VSWR 1 05 1 1250 1476 Adapter 3 5 mm f to 3 5mm f 1a Frequency 10 MHz to 26 5 GHz VSWR 1 1 1 83059B Adapter 2 4 mm f to 3 5mm f 1b Frequency 10 MHz to 50 GHz VSWR 1 1 1 11901B Adapter 2 4 mm f to 3 5mm m 1b...

Page 650: ...20 dBm 8487A Power Sensor 1b Frequency Range 50 MHz to 44 GHz Amplitude Range 65 to 55 dBm 8487D Power Sensor 1 Frequency Range 9 kHz to 1 GHz Amplitude Range 60 to 0 dBm E9304A Signal Source Signal Generator 1 Frequency 50 MHz to 26 5 GHz Output Level Accuracy 0 to 15 dBm 1 0 dB Spectral Purity Better than 20 dBc Typical Temperature Stability 0 01 dBc C PSG EMI Calibration Pulse Generator 1 Pulse...

Page 651: ... GHz 909A Option 012 Termination 50 Ω 3 5 mm f 1c Frequency DC to 26 GHz 909A Option 011 Termination 50 Ω 2 4 mm f 1b Frequency DC to 50 GHz 85138B a Quantity of 2 required for Option C35 3 5 mm RF Input 1 b Required for Option 544 44 GHz Frequency Range c Only required for Option C35 3 5 mm RF Input 1 Table 22 1 Required Test Equipment Item Quantity Critical Specifications Recommended Keysight Mo...

Page 652: ... in the presence of a residual response The measurement is then averaged and the result is normalized to a 1 Hz bandwidth This measurement is performed for both RF inputs Figure 22 1 DANL Test Setup Table 22 2 Displayed Average Noise Level DANL Required Equipment Item Critical Specifications for this test Recommended Keysight Model Termination 50 Ω Type N m Frequency DC to 18 GHz 909A Option 012 T...

Page 653: ...ge Single 5 Perform the following steps for each row listed in Table 22 3 that applies to the frequency range of the instrument being tested a Set the receiver center frequency to the value listed in the Center Frequency column in Table 22 3 by pressing FREQ Channel Center Freq Value b On the receiver press Restart c Wait for the receiver to finish averaging d On the receiver press View Display Di...

Page 654: ... pressing Freq Channel Center Freq 10 MHz The 30 dB value is added because the formula used to calculate the value of the noise power in a 1 Hz BW when measured with a 1 kHz BW is Normalized Noise 10 Log BW 2 BW 1 where BW 2 is the 1 kHz BW we measure and BW 1 is 1 Hz BW to which we want to normalize Therefore 10 Log 1000 30 dB so the noise floor will be 30 dB lower in a 1 Hz BW Table 22 3 Display...

Page 655: ...e floor by visual inspection f Confirm that the measurement is performed on the analyzer noise floor and not on a residual response within the displayed 10 kHz span g Enter the value of the display line as the Measured Average Noise Level in Table 22 4 h Normalize the measured value to a 1 Hz BW by adding 30 dB to the measured value i Enter the Normalized Average Noise Level value in Table 22 4 j ...

Page 656: ...is performed on RF Input 1 only 0 25 span 5 RBW 2 Hz 0 5 horizontal resolution Table 22 5 Frequency Readout Accuracy Required Equipment Item Critical Specification for this test Recommended Keysight Model Adapter Type N m to 3 5 mm f Frequency 10 MHz to 1 51 GHz VSWR 1 1 1 1250 1744 Adaptera 3 5 mm f to 3 5 mm f Frequency 10 MHz to 1 51 GHz VSWR 1 1 1 83059B Cable 1 meter 3 5 mm m to 3 5 mm m Freq...

Page 657: ...form the auto alignment routine 3 On the signal generator press PRESET then set the controls as follows FREQUENCY 1505 MHz POWER LEVEL 10 dBm RF On 4 Select RF Input 1 on the receiver by pressing Input Output RF Input RF Input Port RF Input 5 Preset the receiver by pressing Mode Spectrum Analyzer Mode Preset 6 Set up the receiver by pressing Mode Setup EMC Standard None Input Output More Freq Ref ...

Page 658: ...ed in the Span column of Table 22 6 by pressing SPAN X Scale Span Value d On the receiver press Restart e On the receiver press Peak Search f Record the marker value in the Marker Frequency Readout column in Table 22 6 Table 22 6 Frequency Readout Accuracy Results Center Frequency MHz Span MHz Test Limit Minimum Marker Frequency Readout Test Limit Maximum 1505 2990 1495 9 MHz 1514 1 MHz 1505 127 2...

Page 659: ...r Level Input Level RF Attenuation Distortion 40 MHz 15 dBm 55 dBc Table 22 8 Second Harmonic Distortion Required Equipment Item Critical Specifications for this test Recommended Keysight Model Adapter Type N m to BNC f Frequency 40 to 80 MHz VSWR 1 05 1 1250 1476 Adaptera BNC f to SMA m Frequency 40 to 80 MHz 1250 1200 Adapterb 3 5 mm f to 3 5 mm f Frequency 40 to 80 MHz VSWR 1 1 1 83059B Adapter...

Page 660: ...Select RF Input 1 on the receiver by pressing Input Output RF Input RF Input Port RF Input 4 Preset the receiver by pressing Mode Spectrum Analyzer Mode Preset 5 Set up the receiver by pressing Mode Setup EMC Standard None Input Output More Freq Ref In External FREQ Channel Center Freq 40 MHz SPAN X Scale Span 1 MHz AMPTD Y Scale Attenuation Mech Atten 10 dB 6 On the receiver press Peak Search b Q...

Page 661: ...e Marker and Delta keys 9 On the receiver press FREQ Channel Center Freq 80 MHz Meas Setup Average Hold Number 20 Enter Trace Detector Trace Average Single 10 Press Peak Search Enter the displayed value under the Measured Second Harmonic Distortion dBc heading in Table 22 9 Table 22 9 Second Harmonic Distortion Results Applied Frequency MHz Mixer Level dBm Measured Second Harmonic Distortion dBc S...

Page 662: ...RF inputs Table 22 10 Absolute Amplitude Accuracy Required Equipment Item Critical Specifications Recommended Keysight Model Adapter Type N m to 3 5 mm m Frequency 10 MHz to 18 GHz VSWR 1 1 1 1250 1743 Adapter 3 5 mm f to 3 5 mm f Frequency 10 MHz to 26 5 GHz VSWR 1 1 1 83059B Adaptera 2 4 mm f to 3 5 mm m Frequency 10 MHz to 26 5 GHz VSWR 1 1 1 11901D Cable 1 meter 3 5 mm m to 3 5 mm m Frequency ...

Page 663: ...t 1 3 If the auto alignment for the receiver has not been performed within the past 24 hours press System Alignments Align Now All to perform the auto alignment routine 4 On the signal generator press PRESET then set the controls as follows FREQUENCY 50 MHz Power Level 4 dBm RF On 5 Select RF Input 1 on the receiver by pressing Input Output RF Input RF Input Port RF Input 6 Preset the receiver by ...

Page 664: ... the receiver span as listed in the Span column of Table 22 11 by pressing SPAN X Scale Span Value d Record the signal generator amplitude as measured by the power meter in the Power Meter Amplitude column of Table 22 11 e On the receiver press Restart f Wait for the instrument to finish averaging g On the receiver press Peak Search h Record the signal amplitude as measured by the receiver in the ...

Page 665: ...3 dB 14 20 100 kHz 1 13 dB 4 30 100 kHz 1 13 dB 14 30 100 kHz 1 13 dB Table 22 11 Amplitude Accuracy Results RF Input 1 Preamp Off Nominal Source Amplitude dBm Attenuation dB Span Measured Amplitude dBm Meas_Amp Power Meter Amplitude dBm Power_Meter Amplitude Accuracy Error dB Test Limit dB ...

Page 666: ...al generator amplitude as measured by the power meter in the Power Meter Amplitude column of Table 22 12 e On the receiver press Restart f Wait for the instrument to finish averaging g On the receiver press Peak Search h Record the signal amplitude as measured by the receiver in the Measured Amplitude column of Table 22 12 i Calculate the signal amplitude accuracy error using the following equatio...

Page 667: ...t Model Adapter Type N m to 3 5 mm m Frequency 10 MHz to 18 GHz VSWR 1 1 1 1250 1743 Adapter 3 5 mm f to 3 5 mm f Frequency 10 MHz to 26 5 GHz VSWR 1 1 1 83059B Adaptera 2 4 mm f to 3 5 mm m Frequency 10 MHz to 26 5 GHz VSWR 1 1 1 11901D Attenuator 30 dB Type N m to Type N f Accuracy 0 5 dB at 50 MHz 11708A Attenuator 30 dBb 3 5 mm m to 3 5 mm f Accuracy 0 5 dB at 50 MHz 8493C Option 030 Cable 1 m...

Page 668: ...ith an adapter when needed RF Input 1 Preamp On 3 If the auto alignment for the receiver has not been performed within the past 24 hours press System Alignments Align Now All to perform the auto alignment routine 4 On the signal generator press PRESET then set the controls as follows FREQUENCY 50 MHz Power Level 13 dBm RF On 5 Select RF Input 1 on the receiver by pressing Input Output RF Input RF ...

Page 669: ...d by the power meter in the Power Meter Amplitude column of Table 22 14 9 On the receiver press Restart 10 Wait for the instrument to finish averaging 11 On the receiver press Peak Search 12 Record the signal amplitude as measured by the receiver in the Measured Amplitude column of Table 22 14 13 Calculate the signal amplitude accuracy error using the following equation and record the results unde...

Page 670: ...ait for the instrument to finish averaging 20 On the receiver press Peak Search 21 Record the signal amplitude as measured by the receiver in the Measured Amplitude column of Table 22 15 22 Calculate the signal amplitude accuracy error using the following equation and record the results under the Amplitude Accuracy Error column of Table 22 15 Amplitude Accuracy Error Meas_Amp 30 dB Power_Meter Tab...

Page 671: ...ype N m to 3 5 mm m Frequency 10 MHz to 18 GHz VSWR 1 1 1 1250 1743 Adapter 3 5 mm f to 3 5 mm f Frequency 10 MHz to 26 5 GHz VSWR 1 1 1 83059B Cable 1 metera 3 5 mm m to 3 5 mm m Frequency 10 MHz to 26 5 GHz VSWR 1 4 1 11500E Cable 1 meterb 2 4 mm m to 2 4 mm m Frequency 50 MHz to 44 GHz VSWR 1 55 1 8120 6164 Cable 120 cm BNC m to BNC m Frequency 10 MHz 10503A Power Meter Compatible with power se...

Page 672: ...nts Align Now All to perform the auto alignment routine 4 On the signal generator press PRESET then set the controls as follows FREQUENCY 50 MHz Power level 4 dBm RF On RF Input 1 5 Select RF Input 1 on the receiver by pressing Input Output RF Input RF Input Port RF Input 6 Preset the receiver by pressing Mode Spectrum Analyzer Mode Preset Connect the power splitter to the receiver input directly ...

Page 673: ...Adjust the signal generator output power for a power meter reading of 10 dBm 0 1 dB e Enter the power meter amplitude value into the Power Meter Amplitude column of Table 22 17 f If the Center Frequency is greater than 3 6 GHz center the preselector by pressing Cont Peak Search AMPTD X Scale Presel Center then press Single on the receiver g On the receiver press Restart h On the receiver press Pea...

Page 674: ...m Power_Meter Measurement Error dB Meas_Error Normalized to 50 MHz dB Normalized Test Limit dB 50 MHz 0 Ref 1 0 GHz 1 75 dB 2 0 GHz 1 75 dB 3 0 GHz 1 75 dB 4 0 GHz 2 5 dB 6 0 GHz 2 5 dB 8 0 GHz 2 5 dB 9 0 GHz 2 5 dB 11 GHz 2 5 dB 13 GHz 2 5 dB 14 GHz 2 5 dB 17 GHz 2 5 dB 20 GHz 3 0 dB 23 GHz 3 0 dB 26 GHz 3 0 dB 29 GHz 3 5 dB 32 GHz 3 5 dB 35 GHz 4 5 dB 38 GHz 4 5 dB 41 GHz 4 5 dB 44 GHz 4 5 dB ...

Page 675: ...ncy column of Table 22 18 c Enter the power sensor calibration factor into the power meter for the signal generator frequency d Adjust the signal generator output power for a power meter reading of 10 dBm 0 1 dB e Enter the power meter amplitude value into the Power Meter Amplitude column of Table 22 18 f On the receiver press Restart g On the receiver press Peak Search to position the marker on t...

Page 676: ...ble 22 18 Frequency Response Results RF Input 2 Center Frequency Receiver Amplitude dBm Meas_Amp Power Meter Amplitude dBm Power_Meter Measurement Error dB Meas_Error Normalized to 50 MHz dB Normalized Test Limit dB 50 MHz 0 Ref 300 MHz 1 75 dB 600 MHz 1 75 dB 1 0 GHz 1 75 dB ...

Page 677: ... this test Recommended Keysight Model Adapter Type N m to 3 5 mm m Frequency 10 MHz to 18 GHz VSWR 1 1 1 1250 1743 Adapter 3 5 mm f to 3 5 mm f Frequency 10 MHz to 26 5 GHz VSWR 1 1 1 83059B Cable 1 metera 3 5 mm m to 3 5 mm m Frequency 10 MHz to 26 5 GHz VSWR 1 4 1 11500E Cable 1 meterb 2 4 mm m to 2 4 mm m Frequency 50 MHz to 44 GHz VSWR 1 55 1 8120 6164 Cable 120 cm BNC m to BNC m Frequency 10 ...

Page 678: ...ress System Alignments Align Now All to perform the auto alignment routine 4 On the signal generator press PRESET then set the controls as follows FREQUENCY 50 MHz Power level 54 dBm RF On RF Input 1 5 Select RF Input 1 on the receiver by pressing Input Output RF Input RF Input Port RF Input b Required for Option 544 44 GHz Frequency Range Connect the power splitter to the receiver input directly ...

Page 679: ...annel Center Freq Value b Tune the signal generator frequency to the value listed in the Center Frequency column of Table 22 20 c Enter the power sensor calibration factor into the power meter for the signal generator frequency d Adjust the signal generator output power for a power meter reading of 60 dBm 0 1 dB e Enter the power meter amplitude value into the Power Meter Amplitude column of Table...

Page 680: ...requency Response Results Preamp On RF Input 1 Center Frequency Receiver Amplitude dBm Meas_Amp Power Meter Amplitude dBm Power_Meter Measurement Error dB Meas_Error Normalized to 50 MHz dB Normalized Test Limit dB 50 MHz 0 Ref 1 0 GHz 2 0 dB 2 0 GHz 2 0 dB 3 0 GHz 2 0 dB 4 0 GHz 3 0 dB 6 0 GHz 3 0 dB 8 0 GHz 3 0 dB 9 0 GHz 3 0 dB 11 GHz 3 0 dB 13 GHz 3 0 dB 14 GHz 3 0 dB 17 GHz 3 0 dB 20 GHz 3 5 ...

Page 681: ...he Center Frequency column of Table 22 21 c Enter the power sensor calibration factor into the power meter for the signal generator frequency d Adjust the signal generator output power for a power meter reading of 60 dBm 0 1 dB e Enter the power meter amplitude value into the Power Meter Amplitude column of Table 22 21 f On the receiver press Peak Search to position the marker on the peak of the s...

Page 682: ... On Table 22 21 Frequency Response Results RF Input 2 Center Frequency Receiver Amplitude dBm Meas_Amp Power Meter Amplitude dBm Power_Meter Measurement Error dB Meas_Error Normalized to 50 MHz dB Normalized Test Limit dB 50 MHz 0 Ref 300 MHz 2 0 dB 600 MHz 2 0 dB 1 0 GHz 2 0 dB ...

Page 683: ...dBm are measured This measurement is performed on RF Input 1 only Table 22 22 Scale Fidelity Required Equipment Item Critical Specifications for this test Recommended Keysight Model Adaptera Type N m to 3 5 mm f Frequency 50 MHz VSWR 1 1 1 1250 1744 Adapterb 3 5 mm f to 3 5 mm f Frequency 50 MHz VSWR 1 1 1 83059B Adapterc 2 4 mm f to 3 5 mm f Frequency 50 MHz VSWR 1 1 1 11901B Attenuator 10 dBd 3 ...

Page 684: ... routine 3 On the signal generator press PRESET then set the controls as follows Frequency 50 MHz Amplitude 5 dBm RF On 4 Select RF Input 1 on the receiver by pressing Input Output RF Input RF Input Port RF Input 5 Preset the receiver by pressing Mode Spectrum Analyzer Mode Preset 6 Set up the receiver by pressing Mode Setup EMC Standard None Input Output More Freq Ref In External FREQ Channel Cen...

Page 685: ...Delta function by pressing Peak Search Marker Delta 11 Perform the following steps for each attenuator setting listed in the Table 22 23 a Set the external 10 dB step attenuator to the value listed in the External Attenuator Setting column of Table 22 23 b On the receiver press Restart c Record the delta marker amplitude value into the Marker Delta Value column of Table 22 23 Table 22 23 Scale Fid...

Page 686: ...ints in the standard This measurement is performed on RF Input 1 only Table 22 24 CISPR Resolution Bandwidth Shape Accuracy Required Equipment Item Critical Specifications for this test Recommended Keysight Model Adapter Type N m to 3 5 mm f Frequency 10 MHz to 1 51 GHz VSWR 1 1 1 1250 1744 Adaptera 3 5 mm f to 3 5 mm f Frequency 10 MHz to 1 51 GHz VSWR 1 1 1 83059B Adapterb 2 4 mm f to 3 5 mm f F...

Page 687: ...rols as follows FREQUENCY 100 kHz POWER LEVEL 10 dBm RF On 4 Preset the receiver by pressing Mode Spectrum Analyzer Mode Preset 5 Set up the receiver by pressing Input Output RF Input RF Input Port RF Input Input Output RF Input RF Coupling DC if available Input Output More Freq Ref In External Mode Setup EMC Standard CISPR AMPTD Y Scale Ref Level 10 dBm AMPTD Y Scale Scale Div 3 dB Sweep Control ...

Page 688: ...lace the signal in the middle of the top graticule on the receiver display e Turn on trace averaging by pressing Trace Detector Trace Averaging f Set the receiver N dB Points to the value listed in the N dB Points column of Table 22 25 by pressing Meas Setup N dB Points Value g Record the measured N dB Points value in the Measurement Results column in Table 22 25 h Repeat step f and step g for eac...

Page 689: ...sults Test Limit Maximum 200 Hz 100 kHz 440 Hz 1 5 dB 90 Hz 220 Hz 6 0 dB 180 Hz 220 Hz 20 dB 180 Hz 440 Hz 9 kHz 10 MHz 20 kHz 1 0 dB 2 kHz 10 kHz 1 5 dB 4 kHz 10 kHz 6 0 dB 8 kHz 10 kHz 20 0 dB 8 kHz 20 kHz 120 kHz 100 MHz 280 kHz 1 0 dB 20 kHz 140 kHz 1 5 dB 40 kHz 140 kHz 6 0 dB 100 kHz 140 kHz 20 dB 100 kHz 280 kHz 1 0 MHz 1 2 GHz 2 70 MHz 3 0 dB 500 kHz 1 1 MHz 6 0 dB 750 kHz 1 1 MHz 9 0 dB ...

Page 690: ...k Detector Required Equipment Item Critical Specifications for this test Recommended Keysight Model Adaptera Type N m to 3 5 mm f Frequency 100 kHz to 1 0 GHz VSWR 1 1 1 1250 1744 Adapterb 3 5 mm f to 3 5 mm f Frequency 100 kHz to 1 0 GHz VSWR 1 1 1 83059B Adapterc 2 4 mm f to 3 5 mm f Frequency 100 kHz to 1 0 GHz VSWR 1 1 1 11901B Cable 1 meter 3 5 mm m to 3 5 mm m Frequency 100 kHz to 1 51 GHz V...

Page 691: ...6 EMI pulse generator as shown in Figure 22 11 Figure 22 11 Sine Wave Generator Characterization 3 Set the IGUU 2916 EMI pulse generator to output a 100 kHz Sine Wave signal 4 After allowing the power meter to settle record the reading in Table 22 27 under the Power Meter column 5 Set the IGUU 2916 EMI pulse generator to output a 10 MHz Sine Wave signal 6 After allowing the power meter to settle r...

Page 692: ...rator to output a 100 kHz Sine Wave signal 2 Connect the IGUU 2916 EMI pulse generator Output Sine Wave Generator to the EMI receiver RF Input 3 Preset the EMI receiver by pressing Mode Preset 4 Tune the receiver to 100 kHz with a span of 0 Hz by pressing FREQ Channel Center Freq 100 kHz then SPAN X Scale Zero Span 5 Set the Sweeptime to 2 seconds by pressing Sweep Control 2 s 6 Set the RF Couplin...

Page 693: ...ssing Peak Search 19 Record the marker value in Table 22 28 as the Measured value for the Band A reference PRF 20 Calculate the Error with the following formula and enter the value in Table 22 28 Error Measured 60 dBμV Error Table 22 27 21 Put the marker in Delta mode by pressing Marker Delta 22 Turn on the continuous peak function by pressing Peak Search More Continuous Peak Search On 23 Change t...

Page 694: ... the IGUU 2916 EMI pulse generator Output Sine Wave Generator to the EMI receiver RF Input 3 Preset the EMI receiver by pressing Mode Preset 4 Tune the receiver to 10 MHz with a span of 0 Hz by pressing FREQ Channel Center Freq 10 MHz then SPAN X Scale Zero Span 5 Set the Sweeptime to 2 seconds by pressing Sweep Control 2 s 6 Set the RF Coupling to DC by pressing Input Output RF Input RF Coupling ...

Page 695: ...Y Scale Attenuation 18 dB 14 Setup the IGUU 2916 EMI pulse generator as follows a Main Generator Band B b Pulse Frequency 100 Hz c Amplitude 60 dBμV 15 Connect the IGUU 2916 EMI pulse generator Output Main Generator Band A B to the EMI receiver RF Input 16 Put the EMI receiver in single sweep operation by pressing Single 17 Take a single sweep on the EMI receiver by pressing Restart 18 Once the sw...

Page 696: ...able 22 32 26 Without changing any other setting on the EMI receiver or the IGUU 2916 EMI pulse generator change the Pulse Frequency on the pulse generator to the other values in the Table 22 32 except for 1000 Hz and repeat step 24 and step 25 for each Table 22 31 Quasi Peak Absolute Calibration Band B CISPR 16 1 1 2010 Section 4 4 1 Pulse Frequency Hz Band B Measured dBμV Lower Limit dB Error dB...

Page 697: ...de value for the pulse frequency of 1000 Hz in Table 22 32 Band C Testing 1 Set the IGUU 2916 EMI pulse generator to output a 100 MHz Sine Wave signal 2 Connect the IGUU 2916 EMI pulse generator Output Sine Wave Generator to the EMI receiver RF Input 3 Preset the EMI receiver by pressing Mode Preset 4 Tune the receiver to 100 MHz with a span of 0 Hz by pressing FREQ Channel Center Freq 100 MHz the...

Page 698: ...essing Peak Search 18 Record the marker value in Table 22 34 as the Measured value for the Band A reference PRF 19 Calculate the Error with the following formula and enter the value in Table 22 34 Error Measured 60 dBμV Error Table 22 33 20 Put the marker in Delta mode by pressing Marker Delta 21 Turn on the continuous peak function by pressing Peak Search More Continuous Peak Search On 22 Change ...

Page 699: ...he EMI receiver or the IGUU 2916 EMI pulse generator change the Pulse Frequency on the pulse generator to the other values in the Table 22 35 except 1000 Hz and Isolated and repeat step 23 and step 24 for each Table 22 35 Quasi Peak Relative Response Band C CISPR 16 1 1 2010 Section 4 4 2 Pulse Frequency Hz Band C Lower Limit dB Measured dB Upper Limit dB 1000 6 5 9 5 100 0 Reference 0 20 10 5 7 5...

Page 700: ...Pulse Frequency 100 Hz c Amplitude 40 dBμV 32 Move the cable on the IGUU 2916 EMI pulse generator to Output Auxiliary Generator Band A B C D 33 Change the EMI receiver input attenuation to 10 dB by pressing AMPTD Y Scale Attenuation 10 dB 34 Take a single sweep on the EMI receiver by pressing Restart 35 Reset the delta marker by pressing Marker Delta 36 Change the Pulse Frequency on the IGUU 2916 ...

Page 701: ...le 11 Take a single sweep on the EMI receiver by pressing Restart 12 Once the sweep has completed find the peak of the detector output by pressing Peak Search 13 Record the marker value in Table 22 36 as the Measured value for the Band D reference PRF 14 Put the marker in Delta mode by pressing Marker Delta 15 Turn on the continuous peak function by pressing Peak Search More Continuous Peak Search...

Page 702: ...MI receiver has completed and the auto peak value is found record the marker delta amplitude value for the pulse frequency of Isolated in Table 22 37 24 Turn noise floor extension off by pressing Mode Setup Noise Reduction Noise Floor Extension Off 25 Setup the IGUU 2916 EMI pulse generator as follows a Aux Generator Band C D b Pulse Frequency 100 Hz c Amplitude 40 dBμV 26 Move the cable on the IG...

Page 703: ...e EMI receiver by pressing Restart 29 Reset the delta marker by pressing Marker Delta 30 Change the Pulse Frequency on the IGUU 2916 EMI pulse generator to 1000 Hz 31 Take a single sweep on the EMI receiver by pressing Restart 32 Once the sweep on the EMI receiver has completed and the auto peak value is found record the marker delta amplitude value for the pulse frequency of 1000 Hz in Table 22 3...

Page 704: ...commended Keysight Model Adaptera Type N m to 3 5 mm f Frequency 100 kHz to 1 0 GHz VSWR 1 1 1 1250 1744 Adapterb 3 5 mm f to 3 5 mm f Frequency 100 kHz to 1 0 GHz VSWR 1 1 1 83059B Adapterc 2 4 mm f to 3 5 mm f Frequency 100 kHz to 1 0 GHz VSWR 1 1 1 11901B Cable 1 meter 3 5 mm m to 3 5 mm m Frequency 100 kHz to 1 0 GHz VSWR 1 4 1 11500E EMI Calibration Pulse Generator CISPR Specified Pulse Area ...

Page 705: ...2 13 Figure 22 13 Sine Wave Generator Characterization 3 Set the IGUU 2916 EMI pulse generator to output a 100 kHz Sine Wave signal 4 After allowing the power meter to settle record the reading in Table 22 39 under the Power Meter column 5 Set the IGUU 2916 EMI pulse generator to output a 10 MHz Sine Wave signal 6 After allowing the power meter to settle record the reading in Table 22 41 under the...

Page 706: ...al 2 Connect the IGUU 2916 EMI pulse generator Output Sine Wave Generator to the EMI receiver RF Input 3 Preset the EMI receiver by pressing Mode Preset 4 Tune the EMI receiver to 100 kHz with a span of 0 Hz by pressing FREQ Channel Center Freq 100 kHz then SPAN X Scale Zero Span 5 Set the Sweeptime to 100 milliseconds by pressing Sweep Control 100 ms 6 Set the RF Coupling to DC by pressing Input ...

Page 707: ...ng Peak Search More Continuous Peak Search On 18 Take a single sweep on the EMI receiver by pressing Restart 19 Once the sweep on the EMI receiver has completed and the auto peak value is found record the marker amplitude as the Measured value for the pulse frequency being measured in Table 22 40 20 Without changing any other setting on the EMI receiver or the IGUU 2916 EMI pulse generator change ...

Page 708: ...00 milliseconds by pressing Sweep Control 100 ms 6 Set the RF Coupling to DC by pressing Input Output RF Input RF Coupling DC instruments with option 544 are always DC coupled so this step is skipped for them 7 Set the amplitude units to dBµV by pressing AMPTD Y Scale More Y Axis Unit More dBµV 8 Set the reference level to 80 dBµV by pressing AMPTD Y Scale 80 dBµV 9 Change the detector used by the...

Page 709: ...operation by pressing Single 18 Turn on the continuous peak function by pressing Peak Search More Continuous Peak Search On 19 Take a single sweep on the EMI receiver by pressing Restart 20 Once the sweep on the EMI receiver has completed and the auto peak value is found record the marker amplitude as the Measured value for the pulse frequency being measured in Table 22 42 21 Without changing any ...

Page 710: ...enter Freq 100 MHz then SPAN X Scale Zero Span 5 Set the Sweeptime to 100 milliseconds by pressing Sweep Control 100 ms 6 Set the amplitude units to dBµV by pressing AMPTD Y Scale More Y Axis Unit More dBµV 7 Set the reference level to 80 dBµV by pressing AMPTD Y Scale 80 dBµV 8 Change the detector used by the EMI receiver to Peak by pressing Trace Detector More Detector Peak 9 Turn on the marker ...

Page 711: ...operation by pressing Single 17 Turn on the continuous peak function by pressing Peak Search More Continuous Peak Search On 18 Take a single sweep on the EMI receiver by pressing Restart 19 Once the sweep on the EMI receiver has completed and the auto peak value is found record the marker amplitude as the Measured value for the pulse frequency being measured in Table 22 44 20 Without changing any ...

Page 712: ...the EMI receiver to 500 MHz with a span of 0 Hz by pressing FREQ Channel Center Freq 500 MHz then SPAN X Scale Zero Span 5 Set the Sweeptime to 1 milliseconds by pressing Sweep Control 1 ms 6 Set the EMI receiver input attenuator to 10 dB by pressing AMPTD Y Scale Attenuation 10 dB 7 Set the amplitude units to dBµV by pressing AMPTD Y Scale More Y Axis Unit More dBµV 8 Set the reference level to 8...

Page 713: ...sured in Table 22 45 14 Without changing any other setting on the EMI receiver or the IGUU 2916 EMI pulse generator change the Pulse Frequency on the pulse generator and the Sweeptime of the EMI receiver to the other values listed in Table 22 45 and repeat steps 12 and 13 for each 15 Calculate the Error for each of the Measured values in Table 22 45 with the following formula and enter the value i...

Page 714: ...ment Item Critical Specifications for this test Recommended Keysight Model Adaptera Type N m to 3 5 mm f Frequency 100 kHz to 1 0 GHz VSWR 1 1 1 1250 1744 Adapterb 3 5 mm f to 3 5 mm f Frequency 100 kHz to 1 0 GHz VSWR 1 1 1 83059B Adapterc 2 4 mm f to 3 5 mm f Frequency 100 kHz to 1 0 GHz VSWR 1 1 1 11901B Cable 1 meter 3 5 mm m to 3 5 mm m Frequency 100 kHz to 1 51 GHz VSWR 1 4 1 11500E EMI Cali...

Page 715: ...re 22 15 Figure 22 15 Sine Wave Generator Characterization 3 Set the IGUU 2916 EMI pulse generator to output a 100 kHz Sine Wave signal 4 After allowing the power meter to settle record the reading in Table 22 47 under the Power Meter column 5 Set the IGUU 2916 EMI pulse generator to output a 10 MHz Sine Wave signal 6 After allowing the power meter to settle record the reading in Table 22 50 under...

Page 716: ...gnal 2 Connect the IGUU 2916 EMI pulse generator Output Sine Wave Generator to the EMI receiver RF Input 3 Preset the EMI receiver by pressing Mode Preset 4 Tune the receiver to 100 kHz with a span of 0 Hz by pressing FREQ Channel Center Freq 100 kHz then SPAN X Scale Zero Span 5 Set the Sweeptime to 1 second by pressing Sweep Control 1 s 6 Set the RF Coupling to DC by pressing Input Output RF Inp...

Page 717: ... peak of the detector output by pressing Peak Search 19 Record the marker value in Table 22 48 as the Measured value for the Band A reference PRF 20 Calculate the Error with the following formula and enter the value in Table 22 48 Error Measured 40 dBµV 12 36 dB Error Table 22 47 21 Put the marker in Delta mode by pressing Marker Delta 22 Turn on the continuous peak function by pressing Peak Searc...

Page 718: ...U 2916 EMI pulse generator to output a 10 MHz Sine Wave signal 2 Connect the IGUU 2916 EMI pulse generator Output Sine Wave Generator to the EMI receiver RF Input 3 Preset the EMI receiver by pressing Mode Preset 4 Tune the receiver to 10 MHz with a span of 0 Hz by pressing FREQ Channel Center Freq 10 MHz then SPAN X Scale Zero Span 5 Set the Sweeptime to 1 second by pressing Sweep Control 1 s 6 S...

Page 719: ... pulse generator Output Auxiliary Generator Band A B C D to the EMI receiver RF Input 15 Set the EMI receiver input attenuator to 10 dB by pressing AMPTD Y Scale Attenuation 10 dB 16 Put the EMI receiver in single sweep operation by pressing Single 17 Take a single sweep on the EMI receiver by pressing Restart 18 Once the sweep has completed find the peak of the detector output by pressing Peak Se...

Page 720: ...ulse generator to 100 Hz 27 Take a single sweep on the EMI receiver by pressing Restart 28 Once the sweep on the EMI receiver has completed and the auto peak value is found record the marker delta amplitude value for the 100 Hz pulse frequency in Table 22 52 Band C Testing 1 Set the IGUU 2916 EMI pulse generator to output a 100 MHz Sine Wave signal 2 Connect the IGUU 2916 EMI pulse generator Outpu...

Page 721: ...able 22 53 Error Measured Power Meter 106 99 12 Setup the IGUU 2916 EMI pulse generator as follows a Aux Generator Band C D b Pulse Frequency 5000 Hz c Amplitude 40 dBµV 13 Connect the IGUU 2916 EMI pulse generator Output Auxiliary Generator Band A B C D to the EMI receiver RF Input 14 Set the EMI receiver input attenuator to 0 dB by pressing AMPTD Y Scale Attenuation 0 dB 15 Put the EMI receiver ...

Page 722: ...the 10000 Hz pulse frequency in Table 22 55 25 Change the Pulse Frequency on the IGUU 2916 EMI pulse generator to 1000 Hz 26 Take a single sweep on the EMI receiver by pressing Restart 27 Once the sweep on the EMI receiver has completed and the auto peak value is found record the marker delta amplitude value for the 1000 Hz pulse frequency in Table 22 55 Table 22 54 EMI Average Amplitude Relations...

Page 723: ...MPTD Y Scale 80 dBµV 8 Change the detector used by the EMI receiver to EMI Average by pressing Trace Detector More Detector More EMI Average 9 Set the EMI receiver input attenuator to 0 dB by pressing AMPTD Y Scale Attenuation 0 dB 10 Put the EMI receiver in single sweep operation by pressing Single 11 Take a single sweep on the EMI receiver by pressing Restart 12 Once the sweep has completed find...

Page 724: ...e marker delta amplitude value for the 10000 Hz pulse frequency in Table 22 57 20 Change the Pulse Frequency on the IGUU 2916 EMI pulse generator to 1000 Hz 21 Take a single sweep on the EMI receiver by pressing Restart 22 Once the sweep on the EMI receiver has completed and the auto peak value is found record the marker delta amplitude value for the 1000 Hz pulse frequency in Table 22 57 Table 22...

Page 725: ... Equipment Item Critical Specifications for this test Recommended Keysight Model Adaptera Type N m to 3 5 mm f Frequency 10 kHz to 1 0 GHz VSWR 1 1 1 1250 1744 Adapterb 3 5 mm f to 3 5 mm f Frequency 100 kHz to 1 0 GHz VSWR 1 1 1 83059B Adapterc 2 4 mm f to 3 5 mm f Frequency 100 kHz to 1 0 GHz VSWR 1 1 1 11901B Cable 1 meter 3 5 mm m to 3 5 mm m Frequency 100 kHz to 1 51 GHz VSWR 1 4 1 11500E EMI...

Page 726: ...re 22 17 Figure 22 17 Sine Wave Generator Characterization 3 Set the IGUU 2916 EMI pulse generator to output a 100 kHz Sine Wave signal 4 After allowing the power meter to settle record the reading in Table 22 59 under the Power Meter column 5 Set the IGUU 2916 EMI pulse generator to output a 10 MHz Sine Wave signal 6 After allowing the power meter to settle record the reading in Table 22 69 under...

Page 727: ...2916 EMI pulse generator Output Sine Wave Generator to the EMI receiver RF Input 3 Preset the EMI receiver by pressing Mode Preset 4 Tune the receiver to 100 kHz with a span of 0 Hz by pressing FREQ Channel Center Freq 100 kHz then SPAN X Scale Zero Span 5 Set the Sweeptime to 1 second by pressing Sweep Control 1 s 6 Set the RF Coupling to DC by pressing Input Output RF Input RF Coupling DC instru...

Page 728: ...nd the peak of the detector output by pressing Peak Search 20 Record the marker value in Table 22 60 as the Measured value for the Band A reference PRF 21 Calculate the Error with the following formula and enter the value in Table 22 60 Error Measured 40 dBµV 5 13 dB Error Table 22 59 22 Put the marker in Delta mode by pressing Marker Delta 23 Turn on the continuous peak function by pressing Peak ...

Page 729: ... 61 30 Change the Pulse Frequency on the IGUU 2916 EMI pulse generator to 5 Hz 31 Take a single sweep on the EMI receiver by pressing Restart 32 Once the sweep on the EMI receiver has completed and the auto peak value is found record the marker delta amplitude value for the 5 Hz pulse frequency in Table 22 61 Band B Testing 1 Set the IGUU 2916 EMI pulse generator to output a 10 MHz Sine Wave signa...

Page 730: ...e marker value in Table 22 62 as the Measured value for Band B 14 Calculate the Error with the following formula and enter the value in Table 22 62 Error Measured Power Meter 106 99 15 Setup the IGUU 2916 EMI pulse generator as follows a Aux Generator Band B b Pulse Frequency 1000 Hz c Amplitude 40 dBµV 16 Connect the IGUU 2916 EMI pulse generator Output Auxiliary Generator Band A B C D to the EMI...

Page 731: ... delta amplitude value for the pulse frequency being measured in Table 22 64 27 Without changing any other setting on the EMI receiver or the IGUU 2916 EMI pulse generator change the Pulse Frequency on the pulse generator to the other values in the Table 22 64 and repeat steps 25 and 26 for each Band C Testing 1 Set the IGUU 2916 EMI pulse generator to output a 100 MHz Sine Wave signal Table 22 63...

Page 732: ...gle sweep on the EMI receiver by pressing Restart 11 Turn on the marker by pressing Marker 12 Record the marker value in Table 22 65 as the Measured value for Band C 13 Calculate the Error with the following formula and enter the value in Table 22 65 Error Measured Power Meter 106 99 14 Setup the IGUU 2916 EMI pulse generator as follows a Aux Generator Band C D b Pulse Frequency 1000 Hz c Amplitud...

Page 733: ...as completed and the auto peak value is found record the marker delta amplitude value for the 10000 Hz pulse frequency in Table 22 67 26 Change the Pulse Frequency on the IGUU 2916 EMI pulse generator to 100 Hz 27 Take a single sweep on the EMI receiver by pressing Restart 28 Once the sweep on the EMI receiver has completed and the auto peak value is found record the marker delta amplitude value f...

Page 734: ...MPTD Y Scale 80 dBµV 8 Change the detector used by the EMI receiver to RMS Average by pressing Trace Detector More Detector More RMS Average 9 Set the EMI receiver input attenuator to 0 dB by pressing AMPTD Y Scale Attenuation 0 dB 10 Put the EMI receiver in single sweep operation by pressing Single 11 Take a single sweep on the EMI receiver by pressing Restart 12 Once the sweep has completed find...

Page 735: ...the marker delta amplitude value for the 10000 Hz pulse frequency in Table 22 69 20 Change the Pulse Frequency on the IGUU 2916 EMI pulse generator to 100 Hz 21 Take a single sweep on the EMI receiver by pressing Restart 22 Once the sweep on the EMI receiver has completed and the auto peak value is found record the marker delta amplitude value for the 100 Hz pulse frequency in Table 22 69 Table 22...

Page 736: ...steady and drifting narrowband disturbances Table 22 70 Intermittent Unsteady Drifting Disturbances Required Equipment Item Critical Specifications for this test Recommended Keysight Model Adaptera Type N m to 3 5 mm f Frequency 100 kHz to 1 0 GHz VSWR 1 1 1 1250 1744 Adapterb 3 5 mm f to 3 5 mm f Frequency 100 kHz to 1 0 GHz VSWR 1 1 1 83059B Adapterc 2 4 mm f to 3 5 mm f Frequency 100 kHz to 1 0...

Page 737: ...o Align Normal 4 Put the instrument in a known state by pressing Mode Spectrum Analyzer Mode Setup More Restore Mode Defaults OK 5 Set all input output setting to their default state by pressing System Restore Defaults Input Output Settings OK EMI Average Detector Testing 1 Preset the Signal Generator by pressing Preset 2 Set the Synthesizer Sweeper as follows a Output Sine Wave b Frequency 125 kH...

Page 738: ...MI receiver by pressing Restart 12 Once the sweep on the EMI receiver has completed and the auto peak value is found record the marker amplitude as the Sine Wave Measured value for the frequency being measured in Table 22 71 13 On the signal generator turn the modulation On 14 Take a single sweep on the EMI receiver by pressing Restart 15 Once the sweep on the EMI receiver has completed and the au...

Page 739: ... to the EMI receiver RF Input 4 Preset the EMI receiver by pressing Mode Preset 5 Tune the EMI receiver to 125 kHz with a span of 0 Hz by pressing FREQ Channel Center Freq 125 kHz then SPAN X Scale Zero Span 6 Set the RF Coupling to DC by pressing Input Output RF Input RF Coupling DC instruments with option 544 are always DC coupled so this step is skipped for them 7 Set the Sweeptime to 3 seconds...

Page 740: ...ble 22 72 for the frequency being measured Delta Pulsed RF Measured Sine Wave Measured 16 On the signal generator turn the modulation Off 17 Changing the frequency on the EMI receiver and the signal generator to the next value listed in Table 22 72 18 Change the Pulse Width on the signal generator to the corresponding value for the Frequency being tested listed in Table 22 72 19 Repeat steps 11 th...

Page 741: ...760 Keysight N9038A MXE Service Guide Tests Intermittent Unsteady Drifting Disturbances ...

Page 742: ...ssembly initialization 401 A30 LISN Control troubleshooting 401 A4 CPU assembly part number 477 removal 595 A4 processor assembly description 356 troubleshooting 356 A4BT1 CPU board battery part number 477 replacement 595 A5 disk drive description 360 troubleshooting 360 A5 hard disk drive part number 477 recovery process 364 removal 596 A6 power supply description 368 part number 477 removal 593 ...

Page 743: ... 521 522 523 525 526 high band path 218 I IF Flatness menu description 462 initial alignment failure 59 initialization problem 59 input attenuators see A9 and A10 input attenuator input connector see RF input connector Input Selection Level Control description 132 instrument return for service 35 instrument frequency ranges 218 instrument messages 67 instrument options 21 instrument packaging 35 i...

Page 744: ... number 477 S Safety Information 529 Sales and Service offices 31 second harmonic distortion test 678 separate analog IF assembly and digital IF assembly 604 serial number 34 service equipment 28 returning your instrument 35 tools 28 530 service key description 460 service menus 451 service strategy 20 Snapshot Alignments menu description 462 software licensing 660 software overview 663 specificat...

Page 745: ...This information is subject to change without notice Keysight Technologies 2013 2019 Edition 1 April 2019 N9038 90029 www keysight com ...

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