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4-1

Keysight Microwave Network Analyzers
2-Port and 4-Port PNA Series

Service Guide

Troubleshooting

Information in This Chapter

The information in this chapter helps you:

— Identify the portion of the analyzer at fault.
— Locate the specific troubleshooting procedure to identify the assembly or

peripheral at fault.

The sections in this chapter are arranged in a logical troubleshooting order.

The following table lists the sections and a brief summary of what to look for in

that section.

Summary of Contents for N5221A

Page 1: ...Service Guide Keysight 2 Port and 4 Port PNA Microwave Network Analyzers This manual provides documentation for the following models N5221A 10 MHz to 13 5 GHz N5222A 10 MHz to 26 5 GHz ...

Page 2: ...he 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 sweula The license set forth in the EULA represents the exclusive authority by which the U S government may use modify distribute or disclose the Software The EULA and the license set forth therein does not...

Page 3: ...ce 2 2 Electrical Maintenance 2 2 Analyzer Options Accessories and Upgrades Available 2 3 Pulse I O Adapter N1966A 2 3 Required Service Test Equipment 2 4 Keysight Support Services and Assistance 2 7 Service and Support Options 2 7 Contacting Keysight 2 7 Shipping Your Analyzer to Keysight for Service or Repair 2 8 3 Tests and Adjustments Information in This Chapter 3 1 Conventions Used for Hardke...

Page 4: ...mum Power Output Test 3 32 Source Power Linearity Test 3 33 Frequency Accuracy Test 3 34 Trace Noise Test 3 34 Receiver Compression Test 3 35 Noise Floor Test 3 37 Calibration Coefficients Test 3 38 Dynamic Accuracy Test 3 39 Adjustments 3 41 10 MHz Frequency Reference Adjustment 3 41 Synthesizer Bandwidth Adjustment 3 42 Source Adjustment 3 42 IF Gain Adjustment 3 43 Receiver Characterization 3 4...

Page 5: ... A B C D and R Traces Standard S Parameter Mode 4 29 Where to Begin Troubleshooting 4 31 Checking the Source Group 4 34 Checking the Signal Separation Group 4 39 Checking the Receiver Group 4 43 Instrument Block Diagrams Sheet 1 4 47 Microwave PNA N5221A 22A 4 47 Instrument Block Diagrams Sheet 2 4 49 Microwave PNA N5221A 22A 4 49 5 Theory of Operation Information in This Chapter 5 1 Chapter Five ...

Page 6: ...equence 6 3 Rebuilt Exchange Assemblies 6 4 Replaceable Parts Listings 6 6 Front Panel Assembly Front Side All Options 6 10 Front Panel Assembly Back Side All Options 6 12 Top Assemblies and Cables All Options 6 16 2 Port Configuration Option 200 6 21 2 Port Configuration Option 201 6 27 2 Port Configuration Option 210 6 34 2 Port Configuration Option 217 6 40 2 Port Configuration Option 219 6 47 ...

Page 7: ...ng the A20 IF Multiplexer Board 7 31 Removing and Replacing the A21 HMA26 5 7 33 Removing and Replacing the A22 Splitter 7 35 Removing and Replacing the A23 and A24 Mixer Bricks 7 37 Removing and Replacing the A25 A28 Receiver Couplers and Mounting Brackets 7 39 Removing and Replacing the A29 A32 Test Port Couplers 7 41 Removing and Replacing the A33 Reference Mixer Switch 7 43 Removing and Replac...

Page 8: ... Accessing the Option Enable Utility 8 11 Option Entitlement Certificate 8 11 Enabling or Removing Options 8 12 Repairing and Recovering Option Data 8 13 Installing or Changing a Serial Number 8 14 Firmware Upgrades 8 15 How to Check the Current Firmware Version 8 15 Downloading from the Internet 8 15 Operating System Recovery 8 16 Recovering from Solid State Drive SSD Problems 8 16 Correction Con...

Page 9: ...Contents Keysight N5221A 22A Service Guide 10 ...

Page 10: ...11 Keysight N5221A 22A Service Guide Contents ...

Page 11: ...at a Glance Section Title Summary of Content Start Page Safety Symbols Descriptions of CAUTION and WARNING symbols used throughout this manual page 1 2 General Safety Considerations A list of safety points to consider when servicing your network analyzer page 1 3 Electrostatic Discharge Protection A discussion of electrostatic discharge ESD and related recommendations and requirements for ESD prot...

Page 12: ...zard It calls attention to a procedure that if not correctly performed or adhered to could result in damage to or destruction of the instrument Do not proceed beyond a caution note until the indicated conditions are fully understood and met Warning denotes a hazard It calls attention to a procedure which if not correctly performed or adhered to could result in injury or loss of life Do not proceed...

Page 13: ...s not used as specified the protection provided by the equipment could be impaired This product must be used in a normal condition in which all means for protection are intact only If an instrument handle is damaged you should replace it immediately Damaged handles can break while you are moving or lifting the instrument and cause personal injury or damage to the instrument This instrument has aut...

Page 14: ...ery 100 watts dissipated in the cabinet If the total power dissipated in the cabinet is greater than 800 watts then forced convection must be used Do not operate the analyzer with the outer cover removed for more than 30 minutes as this could cause the analyzer to overheat which could result in costly damage The measuring terminals on this instrument are designed to be used with external signals d...

Page 15: ... analyzer with the outer cover removed for more than 30 minutes as this could cause the analyzer to overheat which could result in costly damage No operator serviceable parts inside Refer servicing to qualified personnel To prevent electrical shock do not remove covers The opening of covers or removal of parts may expose dangerous voltages Disconnect the instrument from all voltage sources while i...

Page 16: ...1 6 Keysight N5221A 22A Service Guide Safety and Regulatory Information General Safety Considerations 1 Figure 1 1 Location of Calibration Stickers on PNA ...

Page 17: ...lways wear a heel strap when working in an area with a conductive floor If you are uncertain about the conductivity of your floor wear a heel strap always ground yourself before you clean inspect or make a connection to a static sensitive device or test port You can for example grasp the grounded outer shell of the test port or cable connector briefly always ground the center conductor of a test c...

Page 18: ...1 8 Keysight N5221A 22A Service Guide Safety and Regulatory Information Electrostatic Discharge Protection 1 Figure 1 2 ESD Protection Setup ...

Page 19: ...quipment are required to be separated from normal waste for disposal Reference WEEE Directive 2002 96 EC This symbol indicates that the power line switch is ON This symbol indicates that the power line switch is in the STANDBY position This symbol indicates that the power line switch is in the OFF position This symbol is used to identify a terminal which is internally connected to the product fram...

Page 20: ...tery on the A17 CPU board assembly refer to Removing and Replacing the Lithium Battery on page 7 58 The RCM mark is a registered trademark of the Australian Communications and Media Authority Indicates the time period during which no hazardous or toxic substance elements are expected to leak or deteriorate during normal use Forty years is the expected useful life of the product This symbol on all ...

Page 21: ...grades Available A hyperlink to the PNA Configuration Guide which includes a list of options accessories and upgrades available for the microwave network analyzers page 2 3 Required Service Test Equipment A list of service equipment that is required to perform system verification performance tests adjustments and troubleshooting page 2 4 Keysight Support Services and Assistance The Internet addres...

Page 22: ...aintenance Electrical Maintenance Refer to Review the Principles of Connector Care on page 3 5 To prevent electrical shock disconnect the analyzer from the mains source before cleaning Use a dry cloth or one slightly dampened with water to clean the external case parts Do not attempt to clean internally ...

Page 23: ...ly Microwave Network Analyzers Configuration Guide available online at http literature cdn keysight com litweb pdf 5990 7745EN pdf Pulse I O Adapter N1966A An adapter for connecting between the analyzer s rear panel PULSE I O connector and the coaxial inputs and outputs of external pulse generators and external pulse modulators The adapter contains 11 SMB male coaxial connectors and a mating conne...

Page 24: ...red for proper operation of this test software N A N7840A None P Frequency counter Freq 10 MHz to 20 GHz Accuracy 0 5 ppm 53151A Opt 001 None P A T Signal generator CW Freq 1 185 GHz N5181A Option 503 E8257D Option 520 P A T Power meter Accuracy 0 0068 dB N1913A 14A E4418A B E4419A Bd d If an accurate measurement of the dynamic accuracy specification is not required the E4418A or E4419A can be use...

Page 25: ... mm f to type N m Return Loss 28 dB 1250 1743 None P A T Attenuators 3 5 mm m f 10 dB fixed attenuator Accuracy 0 5 dB Freq 10 MHz to 26 5 GHz 8493C Option 010 None P 3 5 mm m f 20 dB fixed attenuator Accuracy 0 5 dB Freq 10 MHz to 26 5 GHz 8493C Option 020 None P a Unless specified otherwise equipment listed is required for all analyzer models b P Performance tests A Adjustments T Troubleshooting...

Page 26: ...ctor hex nuts N A N A R 20 mm open end torque wrench 0 9 N m 8 in lb setting for measurement port connections 8710 1764 N A P A T Static Safety Parts Adjustable antistatic wrist strap N A 9300 1367 None P A T Antistatic wrist strap grounding cord 5 foot N A 9300 0980 None P A T Static control table mat and earth ground wire N A 9300 0797 None P A T Miscellaneous USB flash ROM drive N A Any None P ...

Page 27: ...A Return to Keysight Calibration Plan The analyzer is delivered with a one year calibration certificate Options are available to have Keysight Technologies provide three or five year calibration coverage perform the annual calibration two or four times Options for basic calibration or ISO IEC 17025 or ANSI NCSL Z540 3 2006 standards compliant calibrations are available After calibration the analyz...

Page 28: ...guration as it was originally shipped Ship the analyzer using the original or comparable antistatic packaging materials Contact Keysight for instructions on where to ship your analyzer In any correspondence or telephone conversation refer to the Keysight product by its model number and full serial number With this information the Keysight representative can determine whether your product is still ...

Page 29: ...d for Hardkeys Softkeys and Menu Items The following conventions are used in this document Chapter Three at a Glance This represents a hardkey a key that is physically located on the instrument This represents a softkey a key whose label is determined by the instrument firmware Menu Item This represents an item in a drop down or pop up menu Section Title Summary of Content Start Page Before You Be...

Page 30: ...ion The Non Standards Compliant process of verifying your analyzer page 3 11 Preliminary Checks Performing the operator s check Checking your test cables Perform these checks before performing system verification page 3 12 System Verification What the system verification does How to perform the verification test How to interpret the results page 3 21 Performance Testsa A brief summary of each perf...

Page 31: ...andwidth Adjustment Source Adjustment IF Gain Adjustment Receiver Characterization Receiver Adjustment EE Default Adjustment IF Response Adjustment Option 090 093 or 094 Only page 3 41 a These performance tests are included in the analyzer s firmware for Options 897 and 898 b These adjustments are included in the analyzer s firmware on all models and options Section Title Summary of Content Start ...

Page 32: ... As the device dimensions change with temperature their electrical characteristics change as well It is necessary to keep the environmental levels within the following limits Temperature 23 C 3 C Error corrected temperature range Once the measurement calibration has been done the ambient temperature must be maintained to within 1 C of the calibration temperature Humidity 0 to 95 at 40 C maximum no...

Page 33: ...utes Table 3 1 Connector Care Quick Reference Guide Handling and Storage Do Keep connectors clean Do Not Touch mating plane surfaces Extend sleeve or connector nut Set connectors contact end down Use plastic end caps during storage Store connectors or adapters loose Visual Inspection Do Inspect all connectors carefully Do Not Use a damaged connector ever Look for metal particles scratches and dent...

Page 34: ... wrench for final connection Tighten past torque wrench break point a Cleaning connectors with alcohol shall only be done with the instrument s power cord removed and in a well ventilated area Allow all residual alcohol moisture to evaporate and the fumes to dissipate prior to energizing the instrument Table 3 1 Connector Care Quick Reference Guide ...

Page 35: ...lyzer s conformance to instrument specifications System Specifications System specifications specify warranted performance of the measurement system when making error corrected measurements using the same calibration kit and test cables used during the system verification routine System specifications are applicable only when the measurement system is used to make error corrected measurements The ...

Page 36: ... verification kit has a traceable path to NIST The total measurement uncertainty limits for the performance verification are the sum of the factory measurement uncertainties and the uncertainties associated with measuring the same devices on the system being verified The difference between the factory measured data and the verification measured data must fall within the total uncertainty limits at...

Page 37: ...pecifications If the performance tests are used to confirm instrument specifications the certificate of calibration will apply to the PNA as an independent instrument The equipment and measurement standards used for the tests must be certified and must be traceable to recognized standards If you have a measurement application that does not use all of the measurement capabilities of the analyzer yo...

Page 38: ...t stopping to repair or adjust1 Refer to Figure 3 1 for test flow Print data at the completion of all the tests even if you are aware that the analyzer did not pass If there is a failure complete the verification before you troubleshoot repair and adjust After the failure has been corrected repeat the entire set of performance tests and generate a new set of data Figure 3 1 ANSI NCSL Z5240 3 2006 ...

Page 39: ... verification perform the preliminary checks and the performance tests while stopping to troubleshoot Refer to Figure 3 2 for test flow Troubleshoot and repair the first problem encountered without continuing to other tests After you troubleshoot repair and adjust repeat the last failed portion and generate a new set of data Figure 3 2 Non Standards Compliant Verification Flowchart ...

Page 40: ...of all installed attenuators calibration of the receivers frequency response of the receivers phase lock and leveling noise floor and trace noise Accessories Used in the Operator s Check Performing the Operator s Check 1 Press UTILITY then then 2 In the PNA Operator s Check dialog box refer to Figure 3 3 under Configure select either Prompt for attachment of Short Open to pause at each step in the...

Page 41: ...hem as they are needed 5 The result of the operator s check will be shown as a PASS or FAIL next to each test refer to Figure 3 3 The PNA Operator s Check dialog box will look different for different PNA model numbers and installed options Some of the tests are performed only if the appropriate options are installed in the PNA Figure 3 3 Operator s Check Dialog Box ...

Page 42: ...3 19 Accessories Used in the Test Port Cable Checks Cable Return Loss Check 3 Press UTILITY 4 Perform a one port calibration on Port 1 1 Port Reflection Refer to the embedded help in the analyzer if necessary 5 Connect the test port cable to Port 1 Connect a broadband load to the other end of the cable Tighten to the specified torque for the connector type The analyzer now displays the return loss...

Page 43: ...ULUS and set the power level to 17 dBm 5 Perform a 1 port calibration on the PNA Port 1 using SmartCal Guided Calibration Follow the calibration wizard instructions After calibration the PNA prompts you to save the cal set as a user Calset Save the cal set data as CalSet_1 cst 6 Connect the test port cable to the PNA Port 1 and perform a 1 port calibration again at the end of the cable After calib...

Page 44: ...lower left corner of the dialog box Save the cable S2P file 9 Retrieve the saved cable S2P to plot out the insertion loss trace S2P data also can be viewed directly on the PNA by pressing UTILITY Refer to the analyzer s embedded Help section Save and Recall a File if necessary 10 Refer to the cable manual to see if it meets the insertion loss specification For an example of a typical insertion los...

Page 45: ...k 1 With the test port cable still connected to Port 1 connect a short to the other end of the cable 2 Press UTILITY 3 Press TRACE CHANNEL then In the New Trace dialog box click the S11 box and then click OK 4 Press RESPONSE then then ENTRY 5 Press RESPONSE Verify that is ON If not press the softkey to toggle it ON The Averaging Factor box will appear directly above the display In the Averaging Fa...

Page 46: ...display Set the Scale Per Division for optimum viewing as shown in Figure 3 7 12 Place a marker on the largest deflection that goes above the reference line and is within the cable s specified frequency range For a typical response of cable magnitude and phase stability see Figure 3 7 13 Place a marker on the largest deflection that goes below the reference line and is within the cable s specified...

Page 47: ...zer to average the measurement 100 times approximately five seconds 5 To normalize the data trace press MARKER ANALYSIS then then then then ENTRY 6 To adjust the display scale a Press RESPONSE then The Scale Per Division box will appear directly above the display Set the Scale Per Division for 0 5 dB Press ENTRY b Press The Reference Level box will appear directly above the display Set the Referen...

Page 48: ...ime to compare several connections If any mode appears each time the cable is connected and reconnected measurement integrity will be affected For a typical response of cable connector repeatability see Figure 3 8 12 For the Port 2 3 and 4 Check connect the cable with the load attached to the respective port and repeat steps 2 through 11 Figure 3 8 Typical Cable Connector Repeatability Response If...

Page 49: ... What the System Verification Verifies The system verification procedure verifies proper operation of the network analyzer calibration kit test port cables together as a system It DOES NOT verify that any of these components pass their specifications independently The user is responsible for independently calibrating and verifying the proper operation of the calibration kit and test port cables pr...

Page 50: ...own phase is assumed to be worst case 180 to 180 Random errors such as noise and connector repeatability are generally combined in a root sum of the squares RSS manner Measurement Traceability To establish a measurement traceability path to a national standard for a network analyzer system the overall system performance is verified through the measurement of devices that have a traceable path This...

Page 51: ...he verification is connect cables to the analyzer test ports perform a calibration or recall a recent calibration run the system verification program for the verification devices Each time through the verification process you are prompted to make necessary connections and perform or recall a calibration as part of performing the verification If you select to perform a calibration you are guided th...

Page 52: ...he test port cables be regularly tested If the system verification is performed with a non Keysight cable ensure that the cable meets or exceeds the specifications for the test cable specified in the previous table Equipment Used in the System Verification Procedure Refer to the cable s user s guide for specifications For system verification to perform correctly it is NECESSARY that the verificati...

Page 53: ... kit disk into the analyzer disk drive 3 Press UTILITY then then The System Verification dialog box is displayed refer to Figure 3 10 Figure 3 10 System Verification Dialog Box 4 In the Calibration Kit box select the calibration kit or electronic calibration module ECal that is being used by clicking on it The corresponding verification kit to use is selected for you and displayed in the Verificat...

Page 54: ...for performing a full calibration or recalling an existing recent calibration 8 Follow the instructions on the analyzer for performing the system verification inserting the verification devices as prompted If the System Fails the Verification Test 1 Disconnect and clean the device that failed the verification test 2 Reconnect the device making sure that all connections are torqued to the proper sp...

Page 55: ... example of typical verification results with Print Tabular Data selected in the Printer Output area of the System Verification dialog box At the top of the printed output is the name of the device the serial number of the device and the date tested Each S parameter measurement result is printed with frequency tested lower and upper limit lines the measured data and the result of the test ...

Page 56: ...3 28 Keysight N5221A 22A Service Guide Tests and Adjustments System Verification 3 Figure 3 12 Example of Printed Tabular Verification Results ...

Page 57: ...em Verification dialog box The printed graphical results show the following the name of the device measured the serial number of the device the parameters measured Results of the measurements Labeled as A in Figure 3 13 Data measured at the factory from the verification kit Labeled as B in Figure 3 13 Upper and lower limit points as defined by the total system uncertainty system Labeled as C in Fi...

Page 58: ...3 30 Keysight N5221A 22A Service Guide Tests and Adjustments System Verification 3 Figure 3 13 Example of Printed Graphical Verification Results ...

Page 59: ...tput Test Source Power Linearity Test Frequency Accuracy Test Trace Noise Test Receiver Compression Test Noise Floor Test Calibration Coefficients Test Dynamic Accuracy Test Source Power Accuracy Test Function of the Test To confirm the accuracy of the source output power of your network analyzer over its full frequency range Specification Tested Test Port Output Power Level Accuracy Equipment Use...

Page 60: ...l frequency range Specification Tested Test Port Output Maximum Leveled Power Equipment Used Power meter Power sensors Any necessary adapters Description of the Test 1 The analyzer is Preset 2 The analyzer is set up for a CW reflection measurement on the test port to be measured 3 A power sensor is connected to the test port using any necessary adapters 4 The analyzer frequency is set to the desir...

Page 61: ... transmission measurement on the test port pair to be measured 3 A test cable is connected between the port pair to be tested with 20 dB of attenuation in series with the cable This is done with an internal source step attenuator or an external 20 dB attenuator This attenuation ensures that the receiver remains in its linear range 4 The receiver measurement is normalized at this Preset power level...

Page 62: ...accuracy of the synthesizer board needs to be tested 1 The analyzer is Preset 2 The analyzer is set up for a CW measurement on Port 1 3 A test cable is connected between Port 1 and a frequency counter with any necessary adapters 4 The signal frequency is measured and compared with the analyzer source frequency setting The difference must be less than the source frequency divided by 16 for a 1 part...

Page 63: ... the standard deviation of both the magnitude trace and the phase trace 5 These standard deviation values are reported as the analyzer s trace noise and are compared with the Trace Noise magnitude and phase specifications If the Analyzer Fails this Test A failure of this test indicates a fault in the receiver s IF chain between the mixer and the A12 SPAM board This can indicate a faulty assembly o...

Page 64: ...the test set output port 4 A power sensor is connected to the end of the test cable 5 For a series of CW frequencies across the analyzer s full frequency range the source output level is adjusted to achieve the specified receiver compression power level typically the receiver s maximum input power level 6 The power sensor is disconnected from the test cable and the cable is connected to the port t...

Page 65: ...floor of Ports 2 3 and 4 1 The analyzer is Preset 2 The analyzer is set up for a CW transmission measurement between the source port and the test port to be measured The analyzer is set to an IF bandwidth of 1 kHz and 801 points per sweep 3 A test cable is connected to the source port 4 A power sensor is connected to the end of the test cable with any necessary adapters 5 For hundreds of frequenci...

Page 66: ...t cable Specification Tested Uncorrected System Performance Equipment Used Calibration kit Test cable Description of the Test Two full SOLT 2 port calibrations are performed on each port pair Ports 1 and 2 are tested as a pair Ports 3 and 4 are tested as a pair on 4 port analyzers Isolation is turned off during each calibration 1 A test cable is connected to Port 1 2 A calibration is performed bet...

Page 67: ...ort A test cable is connected between the signal generator and the test set s Source 2 In port A test cable is connected to the test set s Receiver Out port and the power sensor is connected to the end of this cable The test set s output attenuator is set to 20 dB With the signal generator RF turned off the PNA source power is adjusted until the power sensor reads 20 dBm The PNA source is then tur...

Page 68: ...ch receiver If the Analyzer Fails this Test If the analyzer fails this test rerun the test If the analyzer fails this test repeatedly replace the A23 mixer brick for a Port 1 or Port 2 failure or the A24 mixer brick for a Port 3 or Port 4 failure then repeat this test Refer to Removing and Replacing the A23 and A24 Mixer Bricks on page 7 37 If the analyzer still fails this test replace the A12 SPA...

Page 69: ...nt Option 090 093 or 094 Only on page 3 46 These adjustments are described on the following pages 10 MHz Frequency Reference Adjustment The 10 MHz frequency adjustment is used to adjust the frequency accuracy of the network analyzer s 10 MHz frequency reference on the A10 frequency reference board assembly Equipment Used for the 10 MHz Frequency Reference Adjustment Procedure 1 Connect the equipme...

Page 70: ...Y then then then click Synthesizer Bandwidth Adj 2 Follow the instructions and prompts as they are displayed Source Adjustment The source calibration is used to adjust your network analyzer for a flat source power across its full frequency range There are differences between each test port therefore an adjustment is required for each port Equipment Used for the Source Adjustment System Service Adj...

Page 71: ...ettings are correct 4 Follow the instructions and prompts as they are displayed IF Gain Adjustment The IF gain adjustment is used to adjust the IF gain of the network analyzer Procedure 1 Press UTILITY then then then click IF Gain Adjustment 2 Follow the instructions and prompts as they are displayed Receiver Characterization This characterizes the receivers in your analyzer Procedure 1 Press UTIL...

Page 72: ...r at Port 1 Data obtained during this adjustment are stored in the mxcalfile_pxx files in flash memory on the test set motherboard with a backup copy stored on the hard disk drive The data are used in subsequent measurements Solid state drives can be swapped or replaced without concern for the mxcalfile_pxx files If the test set motherboard is replaced the PNA firmware will automatically create ne...

Page 73: ...Equipment Setup 1 for the Receiver Adjustment 2 Press UTILITY then then then click Receiver Adjustment 3 Ensure the GPIB settings are correct 4 Follow the instructions and prompts as they are displayed Figure 3 17 Equipment Setup 2 for the Receiver Adjustment System Service Adjustments ...

Page 74: ...fy because an adjustment is typically unnecessary 3 Follow the instructions and prompts as they are displayed IF Response Adjustment Option 090 093 or 094 Only The IF Response adjustment is required when upgrading to Option 090 093 and or 094 In addition this adjustment must be performed each time a new configuration is set up or if cables are changed Procedure 1 Press UTILITY then then then click...

Page 75: ...tion in this chapter helps you Identify the portion of the analyzer at fault Locate the specific troubleshooting procedure to identify the assembly or peripheral at fault The sections in this chapter are arranged in a logical troubleshooting order The following table lists the sections and a brief summary of what to look for in that section ...

Page 76: ...keys function properly Does the front panel USB connector function properly page 4 16 Rear Panel Troubleshooting Problems associated with the rear panel interconnects The data found at these rear panel interconnects can be used to troubleshoot the CPU board page 4 21 Measurement System Troubleshooting Problems with the measurement portion of the analyzer Checking the A B R1 and R2 signals Checking...

Page 77: ...ing Operating the Analyzer With Covers Removed Operating the Analyzer With Covers Removed Do not operate the analyzer with the outer cover removed for more than 30 minutes as this could cause the analyzer to overheat which could result in costly damage ...

Page 78: ...ischarge ESD This is important If not properly protected against electrostatic discharge can seriously damage your analyzer resulting in costly repair To reduce the chance of electrostatic discharge follow all of the recommendations outlined in Electrostatic Discharge Protection on page 1 7 for all of the procedures in this chapter ...

Page 79: ... these steps Step 1 Order a replacement assembly Refer to Chapter 6 Replaceable Parts Step 2 Replace the faulty assembly and determine what adjustments are necessary Refer to Chapter 7 Repair and Replacement Procedures Step 3 Perform the necessary adjustments Refer to Chapter 3 Tests and Adjustments Step 4 Perform the necessary performance tests Refer to Chapter 3 Tests and Adjustments ...

Page 80: ... Is the Windows operating system running If not refer to Operating System Recovery in Chapter 8 for instructions 4 If other equipment cables and connectors are being used with the instrument make sure they are clean connected properly and operating correctly 5 Review the procedure for the measurement being performed when the problem appeared Are all the settings correct If not correct them 6 If th...

Page 81: ...roubleshooting Getting Started with Troubleshooting Figure 4 1 Troubleshooting Organization Flowchart Go to Power Up Troubleshooting Go to Front Panel Troubleshooting Go to Rear Panel Troubleshooting Go to Measurement System Troubleshooting ...

Page 82: ...erating system should start The network analyzer measurement interface should open with an S11 measurement displayed Step 3 If the analyzer powers up correctly continue troubleshooting with Front Panel Troubleshooting on page 4 16 Step 4 If the analyzer does not power up correctly follow these troubleshooting steps If the line switch does not glow go to Power Supply Check on page 4 9 If you cannot...

Page 83: ...ge 6 16 4 If any power supply voltage is missing it is likely that the problem is a defective A16 power supply the A15 midplane board or another assembly that is loading down the A16 power supply Continue with If Any Supply Voltage Is Missing on page 4 11 to determine the cause of the problem 5 If the line switch is lit correctly and all the power supply voltages appear to be present as indicated ...

Page 84: ...he safety symbols provided on the instrument and in General Safety Considerations on page 1 3 before operating the unit with the cover removed Make sure that the safety instructions are strictly followed Failure to do so can result in personal injury or loss of life Do not operate the analyzer with the outer cover removed for more than 30 minutes as this could cause the analyzer to overheat which ...

Page 85: ...ltage or over current condition can be the A16 power supply itself or any assembly to which the A16 power supply provides voltage To isolate the cause continue to the assembly removal process as described in the section titled If Any Supply Voltage Is Missing on page 4 11 Table 4 1 Power Supply Measurement Points Test Point Supply Name Expected Level Vdc Test Point Supply Name Expected Level Vdc T...

Page 86: ...nthesizer board refer to Removing and Replacing the A4 A13 Boards on page 7 15 8 Remove the A13 13 5 GHz synthesizer board refer to Removing and Replacing the A4 A13 Boards on page 7 15 9 Remove the A4 13 5 GHz synthesizer board if present refer to Removing and Replacing the A4 A13 Boards on page 7 15 10 Remove the A10 frequency reference board refer to Removing and Replacing the A4 A13 Boards on ...

Page 87: ...l supplies If the supplies are within specifications the most probable cause is a defective A14 system motherboard Refer to Removing and Replacing the A14 System Motherboard on page 7 18 If only one or two fans are not functioning and the power supplies are within specifications suspect the A14 system motherboard or defective fan s Perform the following procedure 1 Remove the fan bracket with fans...

Page 88: ... suspect a defective A14 system motherboard Refer to Removing and Replacing the A14 System Motherboard on page 7 18 Troubleshooting LCD Display Problems This procedure is intended to isolate the faulty assembly when the display is dark If the display is lit but the color mix is faulty refer to A3 Display Test on page 4 19 1 If the display is dim the A3 display assembly is defective Refer to Removi...

Page 89: ...obable cause is the A17 CPU board Refer to Removing and Replacing the A17 CPU Board Assembly on page 7 25 3 If the external VGA monitor displays the correct information verify that the front panel interface ribbon cable is properly plugged into the motherboard connector Refer to Removing and Replacing the Front Panel Assembly on page 7 8 4 If the front panel interface ribbon cable is properly conn...

Page 90: ... Up Troubleshooting on page 4 8 Refer to the following sections to verify the operation of the noted assemblies Front Panel Keypad and RPG Test on this page A3 Display Test on page 4 19 Checking the A2 USB Board on page 4 19 A1 Front Panel Interface Board on page 4 20 If all assemblies are working correctly continue troubleshooting with Rear Panel Troubleshooting on page 4 21 Front Panel Keypad an...

Page 91: ...keypad is working If some of the keys are not working suspect a faulty keypad To replace the keypad refer to Removing the A1 Front Panel Interface Board and Keypad Assembly on page 7 10 If none of the keys are working correctly suspect a faulty A1 front panel interface board To replace the A1 front panel interface board refer to Removing the A1 Front Panel Interface Board and Keypad Assembly on pa...

Page 92: ...suspect a faulty A1 front panel interface board To replace the A1 front panel interface board refer to Removing the A1 Front Panel Interface Board and Keypad Assembly on page 7 10 Trace 4 Display Bk Sp Traces Avg 0 STIMULUS Keys Channel Cal 1 Freq Navigation Keys MARKER ANALYSIS Keys 2 Power Marker 3 Sweep Search 4 Trigger Memory 5 UTILITY Keys Analysis 6 Save Click 7 Print 8 Macro 9 Recall G n Sy...

Page 93: ...fy a Faulty Display A display is considered faulty if More than 0 002 of the total pixels have a constant blue green red or black appearance that will not change Three or more consecutive pixels have a constant blue green red or black appearance that will not change If the A3 display assembly is determined to be faulty replace it Refer to Removing the A3 Display Assembly and the Touchscreen on pag...

Page 94: ... the Speaker If no audio is heard Verify that the volume is set correctly and the proper sound driver is loaded do the following Press UTILITY then then Click on the Sounds and Audio Devices entry Follow the normal Windows procedure to check the sound drivers and volume If the audio is still not heard suspect a faulty speaker Refer to Removing the A1 Front Panel Interface Board and Keypad Assembly...

Page 95: ...he device does not perform correctly remove the non working USB device wait 15 seconds and then reconnect the device to the rear panel USB port If the USB device still does not work and has been verified to work elsewhere then the A17 CPU board is faulty Refer to Removing and Replacing the A17 CPU Board Assembly on page 7 25 Checking the CONTROLLER Port The network analyzer uses a National Instrum...

Page 96: ...of the instruments on the bus Troubleshooting Systems with Controllers Passing the preceding test indicates that the analyzer s peripheral functions are operating normally Therefore if the analyzer has not been operating properly with an external controller check the following The GPIB interface hardware is incorrectly installed or not operational Refer to the embedded help in your analyzer The pr...

Page 97: ... network to the analyzer How to Ping from the Analyzer to the Local Area Network LAN Follow the steps below to verify proper LAN operation assuming you have a functioning LAN If no network LAN is available see Testing Between Two Analyzers on page 4 25 1 Make sure the IP address on the analyzer is set properly and that it is unique If unsure how to check the IP address refer to the embedded help i...

Page 98: ... statistics for 141 121 69 162 Packets Sent 4 Received 4 lost 0 0 loss Approximate round trip times in milli seconds Minimum 0ms Maximum 0ms Average 0ms 6 The above message verifies that one way communication from the analyzer to the network has been established 7 If the subnet mask was changed in step 2 set it back at this time How to Ping from the Local Area Network LAN to the Analyzer Reverse c...

Page 99: ...over cable is not available a crossover cable can be made by following the directions in Constructing a Crossover Cable on page 4 25 Set the IP addresses on two analyzers The addresses can be set to anything but they must be different Make sure the subnet mask and gateway addresses are set to 0 0 0 0 and that the LAN is active on both analyzers Connect the two analyzers together using either a cro...

Page 100: ...pin 6 on the other end of the cable d Connect the wire from pin 6 on one end of the cable to the wire from pin 2 on the other end of the cable 3 Insulate all exposed wires so that they cannot short together 4 Label this as a crossover cable so that it cannot be confused with a standard cable Pins 1 2 3 and 6 of the connectors must be located to determine which wires to cut in the following steps M...

Page 101: ...Keysight N5221A 22A Service Guide 4 27 Troubleshooting Rear Panel Troubleshooting Figure 4 5 Construction of a Crossover Cable ...

Page 102: ...erate and displays no error messages For this type of failure performance tests must be conducted to isolate the problem Begin with viewing the error terms as described in Error Terms on page 8 2 This will help to isolate most problems If additional tests are required refer to Performance Tests on page 3 31 Hard Failure With a hard failure the PNA does not perform well and displays one or more err...

Page 103: ... keysight com pna EEPROM_Information html To view this EEPROM header information on the network analyzer display press UTILITY then then then Refer to Figure 4 6 If the information is incorrect for any of the PC boards contact Keysight Technologies Refer to Contacting Keysight on page 2 7 Figure 4 6 EEPROM Header Info Dialog Window Error Messages SOURCE UNLEVELED The source ALC circuit on the A19 ...

Page 104: ...isplayed in four separate data windows as shown in Figure 4 7 Identifying discrepancies of the traces in these windows can help you to isolate the faulty assembly Figure 4 7 Typical 4 Receiver Display for 2 Port Models For 4 port analyzer models traces A B C D R1 R2 R3 and R4 are displayed in eight separate data windows as shown in Figure 4 8 Identifying discrepancies of the traces in these window...

Page 105: ...analyzer To test further Go to Chapter 3 Tests and Adjustments and perform all the tests in that section If a problem still exists contact Keysight Refer to Contacting Keysight on page 2 7 If any of the traces are not present are noisy or distorted or are at an incorrect level then there is a problem with the analyzer s measurement system Proceed to Where to Begin Troubleshooting Where to Begin Tr...

Page 106: ...alyzer functional group to begin troubleshooting This is by no means an exhaustive list of possible symptoms nor possible failures It is recommended that you view the system block diagram at the end of this chapter as you review the entries in this list and perform any of the troubleshooting procedures listed Good judgement and established logical troubleshooting techniques must be used to complem...

Page 107: ... 3 If you have verified that the DSP driver is present and enabled but all traces are still missing in all bands go to Checking the Source Group on page 4 34 If the traces exhibit power drops in some frequency bands the problem is in the source group Go to Source Group Tests on page 4 34 and perform the tests that correspond to the problems seen Single Trace A B C D R1 R2 R3 or R4 Only If the trac...

Page 108: ...oss the frequency range Broadband failures are indicated by all receiver traces being in the noise floor RF Signal Troubleshooting Check the output power of the A B C and D signals Too many sections Equipment Used for This Check Use an antistatic work surface and wrist strap to reduce the chance of electrostatic discharge for all of the procedures in this chapter Procedures described in this docum...

Page 109: ...Checking the A10 50 MHz Reference Outputs If the power level is low or high on only one of the test ports the problem is either source group or in the signal separation group Continue with Checking the A10 50 MHz Reference Outputs to check the source group Checking the A10 50 MHz Reference Outputs 1 Refer to the block diagram at the end of this chapter and to Top Cables All Cables All Options on p...

Page 110: ...erence signal is present from Checking the A10 50 MHz Reference Outputs replace the A11 LO synthesizer board Refer to Removing and Replacing the A4 A13 Boards on page 7 15 7 If the signal is present reconnect cable W41 and then continue with Checking the A21 HMA26 5 Output Checking the A21 HMA26 5 Output 1 Refer to the block diagram at the end of this chapter and to Bottom RF Cables Standard 4 Por...

Page 111: ...uld be present 5 If the observed problem was frequency banded rather than broadband related set the analyzer frequency to the center of the problem band The spectrum analyzer should measure a signal above the network analyzer setting For analyzers with DSP version 4 0 the signal is 7 61 MHz above the network analyzer setting For analyzers with DSP version 5 0 the signal is 7 44 MHz above the netwo...

Page 112: ...and W7 cables at the A8 source 2 board W5 W7 and A5 are only available in 4 port models and 2 port models with Option 224 2 Disconnect the cables W3 and W9 or cables W5 and W7 dependent on the source board to be checked 3 Connect the spectrum analyzer to the open connector at the end of the cable that connects to the source board to be checked 4 Set the network analyzer for an 800 MHz CW frequency...

Page 113: ...e it would necessitate breaking the phase lock loop causing all of the signals to be lost Equipment Used for This Check Equipment Setup 1 Before starting these checks zero and calibrate the power meter See the power meter user s guide for instructions on setting the calibration factor Use an antistatic work surface and wrist strap to reduce the chance of electrostatic discharge for all of the proc...

Page 114: ...ould be at least the preset power level 1 dB over the entire frequency range If the measured power is correct go to Checking the Receiver Group on page 4 43 If the measured power is not correct go to Checking the Signal through the Signal Separation Path on page 4 40 Checking the Signal through the Signal Separation Path For all of the following checks refer to the block diagrams at the end of thi...

Page 115: ... 800 MHz Perform the following checks in the order presented Checking the A25 A26 A27 and A28 Receiver Couplers 1 Locate the appropriate semirigid cable at the output of the receiver coupler to be checked Options 200 and 400 Port 1 W11 of A25 Port 2 W23 of A28 Port 3 W15 of A26 Port 4 W19 or A27 Options 219 and 419 Port 1 W71 of A25 Port 2 W83 of A28 Port 3 W75 of A26 Port 4 W79 of A27 2 Using a 5...

Page 116: ...2 Test Port Couplers on page 7 41 Checking the A34 A35 A36 and A37 60 dB Source Step Attenuators 1 Locate the appropriate semirigid cable at the output of the source step attenuator to be checked Options 219 and 419 Port 1 W72 of A34 Port 2 W84 of A37 Port 3 W76 of A35 Port 4 W80 of A36 2 Using a 5 16 inch torque wrench disconnect the semirigid cable at the step attenuator 3 Connect the spectrum a...

Page 117: ...Cables 4 Port Option 419 Ports 3 and 4 on page 6 89 Getting Ready to Test Before checking the assemblies you must open the analyzer 1 Turn off the analyzer power 2 Unplug the power to the analyzer and disconnect all front and rear panel connections except installed jumpers 3 Remove the outer and inner covers from the analyzer Refer to Removing the Covers on page 7 6 Equipment Type Model or Part Nu...

Page 118: ...23 Receiver C W55 of A24 Receiver R3 W56 of A24 Receiver R4 W57 of A24 Receiver D W58 of A24 2 Disconnect the flexible cable at the suspect receiver 3 Connect the spectrum analyzer to the suspect receiver connector 4 Refer to Note on page 4 28 The measured signal on the spectrum analyzer should be at 7 61 MHz analyzers with DSP version 4 0 or 7 44 MHz analyzers with DSP version 5 0 5 If the measur...

Page 119: ...sent replace the A33 reference mixer switch Refer to Removing and Replacing the A33 Reference Mixer Switch on page 7 43 Checking the A42 A43 A44 and A45 35 dB Receiver Step Attenuators 1 Locate the appropriate semirigid cable at the output of the receiver step attenuator to be checked Options 219 and 419 Port 1 W88 of A34 Port 2 W94 of A37 Port 3 W90 of A35 Port 4 W92 of A36 2 Disconnect the appro...

Page 120: ...n the A20 IF multiplexer board 3 Connect the spectrum analyzer to the open connector 4 Refer to Note on page 4 28 The measured signal on the spectrum analyzer should be at 7 61 MHz analyzers with DSP version 4 0 or 7 44 MHz analyzers with DSP version 5 0 5 If the measured signal is present replace the A12 SPAM board Refer to Removing and Replacing the A4 A13 Boards on page 7 15 6 If the measured s...

Page 121: ...Keysight N5221A 22A Service Guide 4 47 Troubleshooting Instrument Block Diagrams Sheet 1 Instrument Block Diagrams Sheet 1 Microwave PNA N5221A 22A ...

Page 122: ...RM Port 2 Port 2 W104 To Port 1 W30 W101 A38 BIAS TEE DC BIAS 1 To Port 1 W30 A34 STEP ATTEN 0 50 dB A41 BIAS TEE DC BIAS 2 To Port 2 W30 A37 STEP ATTEN 0 50 dB W26 W26 50 OHM LOAD 50 OHM LOAD PORT 1 W45 W46 W40 B14 15 18 21 B11 13 16 17 B11 21 B13 16 17 B15 20 21 B14 18 19 B12 15 20 21 B11 14 18 19 IF 0 826 MHz for CW Freq 53 MHz IF 7 438 MHz for CW Freq 53 MHz 1 2 3 4 A11 Synthesizer Frequency G...

Page 123: ...Keysight N5221A 22A Service Guide 4 49 Troubleshooting Instrument Block Diagrams Sheet 2 Instrument Block Diagrams Sheet 2 Microwave PNA N5221A 22A ...

Page 124: ...4 4 000 to 5 332 4 000 to 5 332 12 1 5 3394 to 6 7594 5 33944 to 6 75944 5 332 to 6 752 5 332 to 6 752 13 1 6 7594 to 8 0074 6 75944 to 8 00744 6 752 to 8 000 6 752 to 8 000 14 1 8 0074 to 10 6714 8 00744 to 10 6714 8 000 to 10 664 8 000 to 10 664 15 1 10 6714 to 13 5174 10 6714 to 13 5174 10 664 to 13 510 10 664 to 13 510 16 1 6 7587 to 7 7037 13 5174 to 15 4074 6 755 to 7 700 13 510 to 15 400 17...

Page 125: ...ble for reference as you read the information in this chapter Section Title Summary of Content Start Page Network Analyzer System Operation A summary of the theory of operation for the analyzer A summary of the operation of the major functional groups of the analyzer page 5 2 Synthesized Source Group Operation Operation of the assemblies associated with the source group page 5 6 Signal Separation ...

Page 126: ...eceiver group while the test signals are applied to the device under test DUT and then to the receiver group The LO signal is applied directly to the receiver group where it is mixed with the test and reference signals to produce IF signals for each of the eight receivers A D R1 R4 for 4 port models or four receivers A B R1 R2 for 2 port models These IF signals are downconverted and then sampled a...

Page 127: ...separated into major functional groups Each group consists of assemblies that perform a distinct function in the instrument Some of the assemblies are related to more than one group and all of the groups to some extent are interrelated and affect each other s performance The major functional groups are Synthesized Source Group Signal Separation Group Receiver Group Digital Processor and Digital Co...

Page 128: ...network analyzer at the test ports can be found in the Data Sheet and Technical Specifications documents available online at http literature cdn keysight com litweb pdf N5221 90002 pdf and http literature cdn keysight com litweb pdf N5221 90001 pdf1 Refer to Synthesized Source Group Operation on page 5 6 Signal Separation Group Each of the incident signals from the source group is separated into a...

Page 129: ...data acquisition and processing group The front panel group provides communication to the network analyzer The data acquisition and processing group provides the output to the display in addition to signal processing and analyzer control Refer to Digital Processing and Digital Control Group Operation on page 5 26 Power Supply Group The power supply functional group provides power for the other ass...

Page 130: ...eshooting The A10 frequency reference board produces a constant phase locked reference signal of 50 MHz that is sent to the A4 A13 and A11 13 5 GHz synthesizer boards The A11 13 5 GHz synthesizer board produces an LO signal that is sent through the A21 multiplier amplifier 26 5 to the A23 and A24 mixer bricks via the A22 splitter The frequency is synthesized such that the mixing product of this LO...

Page 131: ...Theory of Operation Synthesized Source Group Operation than the test signal Since the A4 A13 and A11 13 5 GHz synthesizer boards each receive their 50 MHz input reference signal from the exact same source frequency drift error is eliminated ...

Page 132: ...5 8 Keysight N5221A 22A Service Guide Theory of Operation Synthesized Source Group Operation 5 Figure 5 3 Source Group ...

Page 133: ... 1 000 7 1 1 0074 to 2 0074 1 0074 to 2 0074 1 000 to 2 000 1 000 to 2 000 8 1 2 0074 to 3 0074 2 0074 to 3 0074 2 000 to 3 000 2 000 to 3 000 9 1 3 0074 to 3 2074 3 0074 to 3 2074 3 000 to 3 200 3 000 to 3 200 10 1 3 2074 to 4 0074 3 2074 to 4 0074 3 200 to 4 000 3 200 to 4 000 11 1 4 0074 to 5 3394 4 0074 to 5 3394 4 000 to 5 332 4 000 to 5 332 12 1 5 3394 to 6 7594 5 3394 to 6 7594 5 332 to 6 7...

Page 134: ...er 26 5 board to the A23 and A24 mixer bricks where they are mixed with the test signals to produce a 7 438 MHz IF signal for each of eight receivers A D and R1 R4 Refer to A23 and A24 Mixer Bricks on page 5 21 for a more complete description A5 and A8 26 5 GHz Source Boards In bands 2 9 the input signals from the A4 or A13 13 5 GHz synthesizer board are passed through to both outputs main and sec...

Page 135: ...s VCO is then divided by ten to produce the 10 MHz EXT REF OUT rear panel signal and also a 10 MHz reference signal for the A12 signal processing ADC module SPAM board The VCO output is also divided by two to produce 50 MHz reference signals for the A4 A13 and A11 13 5 GHz synthesizer boards Rear Panel Interconnects A19 Test Set Motherboard The A19 test set motherboard serves these functions to ac...

Page 136: ... listed in Table 5 2 on page 5 13 All signals are TTL compatible Data input output ports consist of two 8 bit output ports Port A and Port B and two 4 bit bidirectional ports Port C and Port D Connector settings can be changed using SCPI and COM commands The settings are not accessible from the front panel PWR I O A DB 9 female connector Pin assignments are listed in Table 5 3 on page 5 14 Table 5...

Page 137: ...in negative pulse 1 μs min latches OUTPUT1 2 3 4 OUTPUT1 2 TTL out latched 5 12 Port A0 7 Out TTL out latched 13 20 Port B0 7 Out TTL out latched 21 24 Port C I O TTL I O latched 25 28 Port D I O TTL I O latched 29 Port C Status TTL out low input mode high output mode 30 Port D Status TTL out low input mode high output mode 31 Output Strobe Write Strobe TTL out active low data write strobe 1 μs mi...

Page 138: ...3 AnalogOut1 Analog Output Voltage Programmable 10 V 100 mA out Nominally 0 ohms 2 44 mV typical resolution 1 MHz BW 4 AnalogOut2 Analog Output Voltage Programmable 10 V 100 mA out Nominally 0 ohms 2 44 mV typical resolution 1 MHz BW 5 ACOM System ground 6 GndSense Ground sense for Analog In and Analog Out Connected with 51 1 ohms to ACOM 7 AnalogIn1 Analog input 10 V 1 22 mV typical resolution Ri...

Page 139: ...peration 8 AnalogIn2 Analog input 10 V 1 22 mV typical resolution Rin 1 M ohm BW 1 MHz ADC conversion time 1 us typical 9 Power Button Open collector input Active low replicates power button key press Table 5 3 PWR I O Connector Pin Assignments DB 9 Female Connector Pin Name Description ...

Page 140: ... the standard analyzer and allows you to measure devices with higher power and higher dynamic range limits than an analyzer without the configurable test set On 4 port models twelve signal paths routed through front panel SMA jumpers comprise the configurable test set On 2 port models there are six signal paths routed through front panels jumpers in the configurable test set As shown in Figure 5 4...

Page 141: ...onnects to CPLR THRU and CPLR ARM connects to SOURCE OUT While increasing forward S21 dynamic range the reverse S12 dynamic range is degraded by the same amount A25 A28 Receiver Couplers The source incident signals from the A5 and A8 26 5 GHz sources are sent to the A25 A28 receiver couplers where a portion of each signal is coupled off to provide the R1 R2 R3 and R4 receiver reference signals for...

Page 142: ...5 18 Keysight N5221A 22A Service Guide Theory of Operation Signal Separation Group Operation 5 Figure 5 4 4 Port Signal Separation Group ...

Page 143: ...Keysight N5221A 22A Service Guide 5 19 Theory of Operation Signal Separation Group Operation Figure 5 5 2 Port Signal Separation Group ...

Page 144: ...ome options a step attenuator and a bias tee are placed in the signal path of each test port between the A25 and A28 receiver couplers and the A29 and A32 test port couplers The 65 dB step attenuators provide coarse power control for the test port signals They are electro mechanical step attenuators that provide 0 to 65 dB of attenuation in 5 dB steps They adjust the power level to the DUT without...

Page 145: ... are controlled by the A17 CPU board A33 Reference Mixer Switch The A33 reference mixer switch is placed in the R1 reference signal path allowing this reference signal to be switched in and out of the signal path when an external mixer is being used in test configuration An external mixer is placed in measurement configuration between REFERENCE 1 SOURCE OUT and RCVR R1 IN where there would normall...

Page 146: ...ctors for external use and routes external signals in through rear panel connectors to be included in the signal processing In this assembly on 4 port models the R1 R2 R3 and R4 reference signals are combined to create one reference signal R On 2 port models the R1 and R2 reference signals are not combined The analog IF signals A B C D and R for 4 port models and A B R1 and R2 for 2 port models ar...

Page 147: ...tral processing unit CPU The digitized data is processed into magnitude and phase data by the DSP and sent to the CPU random access memory RAM by way of the peripheral component interconnect PCI bus The processed and formatted data is finally routed to the display and to the general purpose interface bus GPIB for remote operation Refer to Digital Processing and Digital Control Group Operation on p...

Page 148: ...5 24 Keysight N5221A 22A Service Guide Theory of Operation Receiver Group Operation 5 Figure 5 6 4 Port Receiver Group ...

Page 149: ...Keysight N5221A 22A Service Guide 5 25 Theory of Operation Receiver Group Operation Figure 5 7 2 Port Receiver Group ...

Page 150: ...he display math processing functions and communications between the analyzer and an external controller or peripherals A block diagram of the digital control functional group is shown in Figure 5 8 on page 5 27 The digital control functional group consists of two subgroups Front Panel Subgroup A1 Front Panel Display Board A2 USB Board A3 Display Assembly Keypad Assembly A14 system motherboard Data...

Page 151: ...Keysight N5221A 22A Service Guide 5 27 Theory of Operation Digital Processing and Digital Control Group Operation Figure 5 8 Digital Processing and Digital Control Group ...

Page 152: ...system motherboard The A1 front panel interface board also includes a speaker that emits the audio signals received from the A17 CPU board A2 USB Board This board provides four universal serial bus USB jacks that are industry standard 4 pin connectors allowing multiple USB devices to be connected to the analyzer s front panel A3 Display Assembly The A3 display assembly contains an 10 inch LCD with...

Page 153: ... IF signal The resulting raw data is written into the main random access memory RAM The data taking sequence is triggered either externally from the rear panel or by firmware on the A17 CPU board A17 CPU Board The A17 CPU board contains the circuitry to control the operation of the analyzer Some of the components include the central processing unit CPU memory EEPROM ROM RAM bus lines to other boar...

Page 154: ...te drive assembly SSDA is an integrated development environment IDE data storage device which is connected directly to and physically mounted within the enclosure of the A17 CPU board The full operating system and firmware for the network analyzer is stored on the A51 solid state drive USB x4 Four universal serial bus USB jacks industry standard 4 pin connectors GPIB 0 Controller A 24 pin female t...

Page 155: ...log 9 V analog 3 3 V analog 5 2 V analog 15 V standby always on 32 V analog 15 V analog 5 2 V analog 7 V analog 5 1 V standby 12 V digital 3 35 V digital 5 1 V digital The 15 V standby supply remains on continuously whenever the power supply is plugged in This supply is used to provide power to front panel LEDs and CPU components when the analyzer is turned off Supply voltages which oscillate betw...

Page 156: ...5 32 Keysight N5221A 22A Service Guide Theory of Operation Power Supply Group Operation 5 ...

Page 157: ...How to order a replaceable part from Keysight Technologies page 6 2 Assembly Replacement Sequence The correct sequence for replacing a defective assembly page 6 3 Rebuilt Exchange Assemblies The definition of a rebuilt exchange assembly The procedure for replacing and returning a defective assembly to Keysight Technologies page 6 4 Replaceable Parts Listings Tables that list the assemblies by refe...

Page 158: ...chnologies for instructions on where to send the order Refer to Contacting Keysight on page 2 7 To order a part that is not listed in the replaceable parts lists include the instrument model number and complete instrument serial number include the description and function of the part indicate the quantity required Contact Keysight Technologies for instructions on where to send the order Refer to C...

Page 159: ...ies the faulty assembly Step 2 Order a replacement assembly Refer to this chapter Step 3 Replace the faulty assembly and determine what adjustments are necessary Refer to Chapter 7 Repair and Replacement Procedures Step 4 Perform the necessary adjustments Refer to Chapter 3 Tests and Adjustments Step 5 Perform the necessary performance tests Refer to Chapter 3 Tests and Adjustments Step 6 Keysight...

Page 160: ...ired and tested assemblies are available on a trade in basis Exchange assemblies are offered for lower cost than a new assembly but meet all factory specifications required of a new assembly The defective assembly must be returned for credit under the terms of the rebuilt exchange assembly program Spare assembly stock desired should be ordered using the new assembly part number ...

Page 161: ...Keysight N5221A 22A Service Guide 6 5 Replaceable Parts Rebuilt Exchange Assemblies Figure 6 1 Module Exchange Procedure ...

Page 162: ...ber Listing by Reference Designator Reference Designator Description Location A1 Front panel interface board Front Panel Assembly Back Side All Options on page 6 12 A2 USB board A3 Display assembly A4 13 5 GHz synthesizer board Top Assemblies and Cables All Options on page 6 16 A5 26 5 GHz source board A6 Not used A7 Not used A8 26 5 GHz source board A9 Not used A10 Frequency reference board A11 1...

Page 163: ...ies are in your PNA Refer to Bottom Assemblies and Cables by Option Set in Table 6 2 on page 6 8 A30 Port 3 port coupler A31 Port 4 port coupler A32 Port 2 port coupler A33 Reference mixer switch A34 Port 1 source step attenuator A35 Port 3 source step attenuator A36 Port 4 source step attenuator A37 Port 2 source step attenuator A38 Port 1 bias tee A39 Port 3 bias tee A40 Port 4 bias tee A41 Port...

Page 164: ...Option 201 on page 6 27 2 Port Configuration Option 210 on page 6 34 2 Port Configuration Option 217 on page 6 40 2 Port Configuration Option 219 on page 6 47 4 Port Configuration Option 400 on page 6 54 4 Port Configuration Option 401 on page 6 61 4 Port Configuration Option 410 on page 6 68 4 Port Configuration Option 417 on page 6 75 4 Port Configuration Option 419 on page 6 84 Rear Panel Assem...

Page 165: ...mentation on page 6 105 GPIB Cables GPIB Adapter on page 6 105 Fuses on page 6 105 ESD Supplies on page 6 105 Memory Modules on page 6 106 Upgrade Kits on page 6 106 USB Accessories on page 6 105 Rack Mount Kits and Handle Kits on page 6 106 Touch up Paint on page 6 106 Table 6 2 Part Number Listing by Type of Part ...

Page 166: ...d Handle Kits on page 6 106 for part numbers of complete rack mount kits 5041 9176 2 Trim strip filler For analyzers without handles N5242 80005 1 Keypad overlay N5222 80002 1 Lower front panel overlay 2 port Option 200 N5222 80003 Lower front panel overlay 2 port Option 201 N5227 80002 Lower front panel overlay 2 port Option 210 N5222 80004 Lower front panel overlay 2 port Option 217 N5222 80003 ...

Page 167: ...Keysight N5221A 22A Service Guide 6 11 Replaceable Parts Replaceable Parts Listings Figure 6 2 Front Panel Assembly Front Side All Options ...

Page 168: ...16 Machine screw M3 0 x 8 pan head 6 to attach display to front frame 6 to attach LCD display assy to bracket and 4 to attach USB board to front frame E6601 61028 1 Cable A3 front panel interface board to inverter board 0515 1934 4 Machine screw M2 5 x 6 pan head To attach inverter board and USB controller board to display hold down bracket a critical footnote 0950 5396 LED 1 Inverter board 0950 4...

Page 169: ...42 00044 LED N5245 00027 Tube Was N5242 00034 1 LCD display rear plate N5242 60043 1 LCD display cable a critical footnote N5242 20168 LED 2 LCD display side bracket a critical footnote 8121 2132 LED 8121 1451 Tube 1 Cable assembly for LCD backlight a In March 2013 Keysight discontinued using a display with florescent tube backlighting and began using a display with LED backlighting Associated par...

Page 170: ...6 14 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 3 Front Panel Assembly Back Side All Options Figure 6 4 A3 Display Assembly with Old LCD Display 2090 0883 ...

Page 171: ...Keysight N5221A 22A Service Guide 6 15 Replaceable Parts Replaceable Parts Listings Figure 6 5 A3 Display Assembly with New LCD Display 2090 1036 ...

Page 172: ...as N5242 60150 1 13 5 GHz source 2 synthesizer board A14 N5242 60151 1 System motherboard A15 W1312 60095 1 Midplane board A16 0950 4934 1 Power supply A17 W1312 60196 1 CPU board assembly Intel 2 0 GHz Core i7a A18 N5240 60059 1 GPIB board A51b N5242 60088 1 Solid state drive SSD for Windows XP Operating System to be used with the 2 0 GHz CPU board W1312 60196 System CPU version 6c N8983Ad Solid ...

Page 173: ...nalyzer In the window displayed find System CPU Version d For more information on the N8983A SSD refer to the Windows 7 Operating System Upgrade Kit Installation Note available online at http literature cdn keysight com litweb pdf N8983 90001 pdf e The lithium battery is located inside the A17 CPU board assembly Refer to Removing and Replacing the Lithium Battery on page 7 58 for an illustration ...

Page 174: ...6 18 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 6 Top Assemblies All Options ...

Page 175: ...013 1 A20 IF multiplexer board P203 to A12 SPAM board J2 W61 F N5242 60014 1 A20 IF multiplexer board P403 to A12 SPAM board J4 W62 F N5242 60015 1 A20 IF multiplexer board P603 to A12 SPAM board J5 W63 F N5242 60016 1 A20 IF multiplexer board P803 to A12 SPAM board J6 W64 F N5242 60027 1 A10 frequency reference board J4 to A12 SPAM board J3 W65 F N5242 60028 1 A10 frequency reference board J5 to ...

Page 176: ...6 20 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 7 Top Cables All Cables All Options ...

Page 177: ... 7766 1 Mixer brick A25 A28 5087 7757 2 Test port 1 receiver coupler Test port 2 receiver coupler A29 A32 5087 7813 2 Test port 1 coupler Test port 2 coupler N5240 60058 2 Front panel LED board a Part numbers in italic typeface are for rebuilt exchange assemblies Refer to Rebuilt Exchange Assemblies on page 6 4 b All new units built after August 2009 no longer use the N5242 60031 cable that was at...

Page 178: ...6 22 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 8 Bottom Assemblies Standard 2 Port Configuration Option 200 ...

Page 179: ...F OUT J6 W47 SR N5222 20060 1 A23 mixer brick to EXT TSET DRIVE LO OUT J5 W51 F N5242 60017 1 A23 mixer brick A to A20 IF multiplexer P1 W54 F N5242 60018 1 A23 mixer brick B to A20 IF multiplexer P201 W59 W63 F Refer to Top Cables All Cables All Options on page 6 19 W64 F N5242 60025 1 A23 mixer brick R1 to A20 IF multiplexer P601 W65 F N5242 60026 1 A23 mixer brick R2 to A20 IF multiplexer P801 ...

Page 180: ...6 24 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 9 Bottom RF Cables Standard 2 Port Configuration Option 200 ...

Page 181: ...el PWR I O to A19 test set motherboard J301 16R N5242 60006 A19 test set motherboard J212 to A23 mixer brick 1 3W N5225 60001 A19 test set motherboard J222 to port 2 LED board J1 24R N5230 60014 Was N5242 60011 A19 test set motherboard J209 to A21 HMA26 5 100R N5242 60004 A14 system motherboard J1 to A19 test set motherboard J1 to A20 IF multiplexer board J1 36R 8121 0834 Rear panel HANDLER I O to...

Page 182: ...6 26 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 10 Bottom Ribbon Cables and Wire Harnesses Standard 2 Port Configuration Option 200 ...

Page 183: ...7 7757 2 Test port 1 receiver coupler Test port 2 receiver coupler A29 A32 5087 7813 2 Test port 1 coupler Test port 2 coupler A33 5087 7758 1 Reference mixer switch N5240 60058 2 Front panel LED board a Part numbers in italic typeface are for rebuilt exchange assemblies Refer to Rebuilt Exchange Assemblies on page 6 4 b All new units built after August 2009 no longer use the N5242 60031 cable tha...

Page 184: ...6 28 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 11 Bottom Assemblies 2 Port Option 201 ...

Page 185: ...itch to front panel REF 1 SOURCE OUT W36 SR N5222 20032 1 REF 1 RCVR R1 IN to A33 reference mixer switch W40 SR N5222 20039 1 REF 2 RCVR R2 IN to A23 mixer brick R2 W41 SR Refer to Top Cables All Cables All Options on page 6 19 W42 SR N5222 20073 1 A21 HMA26 5 to A23 mixer brick W45 SR Refer to Top Cables All Cables All Options on page 6 19 W46 SR N5222 20061 1 W45 to rear panel EXT TSET DRIVE RF ...

Page 186: ...6 30 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 a SR semirigid coaxial cable F flexible coaxial cable ...

Page 187: ...Keysight N5221A 22A Service Guide 6 31 Replaceable Parts Replaceable Parts Listings Figure 6 12 Bottom RF Cables 2 Port Option 201 ...

Page 188: ... 10R N5242 60005 Rear panel PWR I O to A19 test set motherboard J301 16R N5242 60006 A19 test set motherboard J212 to A23 mixer brick 1 3W N5242 60009 A19 test set motherboard J222 to port 2 LED board J1 24R N5230 60014 Was N5242 60011 A19 test set motherboard J209 to A21 HMA26 5 100R N5242 60004 A14 system motherboard J1 to A19 test set motherboard J1 to A20 IF multiplexer board J1 36R 8121 0834 ...

Page 189: ...Keysight N5221A 22A Service Guide 6 33 Replaceable Parts Replaceable Parts Listings Figure 6 13 Bottom Ribbon Cables and Wire Harnesses 2 Port Option 201 ...

Page 190: ... 1 receiver coupler Test port 2 receiver coupler A29 A32 5087 7813 2 Test port 1 coupler Test port 2 coupler A64 A67 08493 60026 2 Test port 1 6 dB attenuator Test port 2 6 dB attenuator N5240 60058 2 Front panel LED board a Part numbers in italic typeface are for rebuilt exchange assemblies Refer to Rebuilt Exchange Assemblies on page 6 4 b All new units built after August 2009 no longer use the ...

Page 191: ...Keysight N5221A 22A Service Guide 6 35 Replaceable Parts Replaceable Parts Listings Figure 6 14 Bottom Assemblies 2 Port Option 210 ...

Page 192: ...47 SR N5222 20060 1 A23 mixer brick to EXT TSET DRIVE LO OUT J5 W51 F N5242 60017 1 A23 mixer brick A to A20 IF multiplexer P1 W54 F N5242 60018 1 A23 mixer brick B to A20 IF multiplexer P201 W59 W63 F Refer to Top Cables All Cables All Options on page 6 19 W64 F N5242 60025 1 A23 mixer brick R1 to A20 IF multiplexer P601 W65 F N5242 60026 1 A23 mixer brick R2 to A20 IF multiplexer P801 W97 SR N52...

Page 193: ...Keysight N5221A 22A Service Guide 6 37 Replaceable Parts Replaceable Parts Listings Figure 6 15 Bottom RF Cables 2 Port Option 210 ...

Page 194: ... to A19 test set motherboard J301 16R N5242 60006 A19 test set motherboard J212 to A23 mixer brick 1 3W N5225 60001 A19 test set motherboard J222 to port 2 LED board J1 24R N5230 60014 Was N5242 60011 A19 test set motherboard J209 to A21 HMA26 5 100R N5242 60004 A14 system motherboard J1 to A19 test set motherboard J1 to A20 IF multiplexer board J1 36R 8121 0834 Rear panel HANDLER I O to A19 test ...

Page 195: ...Keysight N5221A 22A Service Guide 6 39 Replaceable Parts Replaceable Parts Listings Figure 6 16 Bottom Ribbon Cables and Wire Harnesses 2 Port Option 210 ...

Page 196: ...7 7813 2 Test port 1 coupler Test port 2 coupler A33 5087 7758 1 Reference mixer switch A34 A37 33321 60077 2 Test port 1 source attenuator Test port 2 source attenuator A42 A45 33321 60078 2 Port 1 receiver attenuator Port 2 receiver attenuator N5240 60058 2 Front panel LED board a Part numbers in italic typeface are for rebuilt exchange assemblies Refer to Rebuilt Exchange Assemblies on page 6 4...

Page 197: ...Keysight N5221A 22A Service Guide 6 41 Replaceable Parts Replaceable Parts Listings Figure 6 17 Bottom Assemblies 2 Port Option 217 ...

Page 198: ...1 HMA26 5 to A23 mixer brick W45 SR Refer to Top Cables All Cables All Options on page 6 19 W46 SR N5222 20061 1 W45 to rear panel EXT TSET DRIVE RF OUT J6 W47 SR N5222 20060 1 A23 mixer brick to rear panel EXT TSET DRIVE LO OUT J5 W51 F N5242 60017 1 A23 mixer brick A to A20 IF multiplexer P1 W54 F N5242 60018 1 A23 mixer brick B to A20 IF multiplexer P201 W59 W63 F Refer to Top Cables All Cables...

Page 199: ...Port 1 CPLR THRU W115 SR N5222 20070 1 A29 port 1 coupler to front panel Port 1 CPLR ARM W116 SR N5222 20069 1 A32 port 2 coupler to front panel Port 2 CPLR THRU W117 SR N5222 20071 1 A32 port 2 coupler to front panel Port 2 CPLR ARM a SR semirigid coaxial cable F flexible coaxial cable Reference Designator Typea Part Number Qty Description ...

Page 200: ...6 44 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 18 Bottom RF Cables 2 Port Option 217 ...

Page 201: ...19 test set motherboard J205 to A42 port 1 receiver attenuator 16R N5242 60006 A19 test set motherboard J212 to A23 mixer brick 1 3W N5242 60009 A19 test set motherboard J222 to port 2 LED board J1 10R 8121 0982 Was N5242 60007 A19 test set motherboard J208 to A45 port 2 receiver attenuator 14R N5242 60008 A19 test set motherboard J204 to A37 port 2 source attenuator 24R N5230 60014 Was N5242 6001...

Page 202: ...6 46 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 19 Bottom Ribbon Cables and Wire Harnesses 2 Port Option 217 ...

Page 203: ...087 7758 1 Reference mixer switch A34 A37 33321 60077 2 Test port 1 source attenuator Test port 2 source attenuator A38 A41 5067 4865 2 Test port 1 bias tee includes wire harness Test port 2 bias tee includes wire harness A42 A45 33321 60078 2 Port 1 receiver attenuator Port 2 receiver attenuator N5240 60058 2 Front panel LED board a Part numbers in italic typeface are for rebuilt exchange assembl...

Page 204: ...6 48 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 20 Bottom Assemblies 2 Port Option 219 ...

Page 205: ...1 A21 HMA26 5 to A23 mixer brick W45 SR Refer to Top Cables All Cables All Options on page 6 19 W46 SR N5222 20061 1 W45 to rear panel EXT TSET DRIVE RF OUT J6 W47 SR N5222 20060 1 A23 mixer brick to rear panel EXT TSET DRIVE LO OUT J5 W51 F N5242 60017 1 A23 mixer brick A to A20 IF multiplexer P1 W54 F N5242 60018 1 A23 mixer brick B to A20 IF multiplexer P201 W59 W63 F Refer to Top Cables All Ca...

Page 206: ...attenuator to A23 mixer brick B W115 SR N5222 20070 1 A29 port 1 coupler to front panel Port 1 CPLR ARM W117 SR N5222 20071 1 A32 port 2 coupler to front panel Port 2 CPLR ARM W119 SR N5222 20072 1 A38 port 1 bias tee to A29 port 1 coupler W120 SR N5222 20065 1 A41 port 2 bias tee to A32 port 2 coupler a SR semirigid coaxial cable F flexible coaxial cable Reference Designator Typea Part Number Qty...

Page 207: ...Keysight N5221A 22A Service Guide 6 51 Replaceable Parts Replaceable Parts Listings Figure 6 21 Bottom RF Cables 2 Port Option 219 ...

Page 208: ...2 60006 A19 test set motherboard J212 to A23 mixer brick 1 2W P O Bias Tee A19 test set motherboard J541 to A38 port 1 bias tee 3W N5242 60009 A19 test set motherboard J222 to port 2 LED board J1 2W P O Bias Tee A19 test set motherboard J544 to A41 port 2 bias tee 10R 8121 0982 Was N5242 60007 A19 test set motherboard J208 to A45 port 2 receiver attenuator 14R N5242 60008 A19 test set motherboard ...

Page 209: ...Keysight N5221A 22A Service Guide 6 53 Replaceable Parts Replaceable Parts Listings Figure 6 22 Bottom Ribbon Cables and Wire Harnesses 2 Port Option 219 ...

Page 210: ...5087 7757 4 Test port 1 receiver coupler Test port 3 receiver coupler Test port 4 receiver coupler Test port 2 receiver coupler A29 A30 A31 A32 5087 7813 4 Test port 1 coupler Test port 3 coupler Test port 4 coupler Test port 2 coupler N5240 60058 2 Front panel LED board a Part numbers in italic typeface are for rebuilt exchange assemblies Refer to Rebuilt Exchange Assemblies on page 6 4 b All new...

Page 211: ...Keysight N5221A 22A Service Guide 6 55 Replaceable Parts Replaceable Parts Listings Figure 6 23 Bottom Assemblies Standard 4 Port Configuration Option 400 ...

Page 212: ...s All Cables All Options on page 6 19 W46 SR N5222 20061 1 W45 to rear panel EXT TSET DRIVE RF OUT J6 W47 SR N5222 20060 1 A23 mixer brick to EXT TSET DRIVE LO OUT J5 W51 F N5242 60017 1 A23 mixer brick A to A20 IF multiplexer P1 W52 F N5242 60021 1 A23 mixer brick R1 to A20 IF multiplexer P411 W53 F N5242 60022 1 A23 mixer brick R2 to A20 IF multiplexer P412 W54 F N5242 60018 1 A23 mixer brick B ...

Page 213: ... W104 SR N5222 20083 1 A28 port 2 receiver coupler to A32 port 2 coupler W105 SR N5222 20088 1 A29 port 1 coupler to A23 mixer brick A W106 SR N5222 20089 1 A30 port 3 coupler to A24 mixer brick C W107 SR N5222 20087 1 A31 port 4 coupler to A24 mixer brick D W108 SR N5222 20086 1 A32 port 2 coupler to A23 mixer brick B a SR semirigid coaxial cable F flexible coaxial cable Reference Designator Type...

Page 214: ...6 58 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 24 Bottom RF Cables Standard 4 Port Configuration Option 400 ...

Page 215: ...oard J301 16R N5242 60006 A19 test set motherboard J212 to A23 mixer brick 1 16R N5242 60006 A19 test set motherboard J213 to A24 mixer brick 2 3W N5242 60009 A19 test set motherboard J222 to ports 2 4 LED board J1 24R N5230 60014 Was N5242 60011 A19 test set motherboard J209 to A21 HMA26 5 100R N5242 60004 A14 system motherboard J1 to A19 test set motherboard J1 to A20 IF multiplexer board J1 36R...

Page 216: ...6 60 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 25 Bottom Ribbon Cables and Wire Harnesses Standard 4 Port Configuration Option 400 ...

Page 217: ... coupler Test port 3 receiver coupler Test port 4 receiver coupler Test port 2 receiver coupler A29 A30 A31 A32 5087 7813 4 Test port 1 coupler Test port 3 coupler Test port 4 coupler Test port 2 coupler A33 5087 7758 1 Reference mixer switch N5240 60058 2 Front panel LED board a Part numbers in italic typeface are for rebuilt exchange assemblies Refer to Rebuilt Exchange Assemblies on page 6 4 b ...

Page 218: ...6 62 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 26 Bottom Assemblies 4 Port Option 401 ...

Page 219: ...20047 1 A26 port 3 receiver coupler to front panel Port 3 SOURCE OUT W16 SR N5222 20049 1 Port 3 CPLR THRU to A30 port 3 coupler W17 SR N5222 20023 1 A26 port 3 receiver coupler to front panel REF 3 SOURCE OUT W18 SR N5222 20015 1 A30 port 3 coupler to front panel Port 3 CPLR ARM W19 SR N5222 20050 1 A27 port 4 receiver coupler to front panel Port 4 SOURCE OUT W20 SR N5222 20054 1 Port 4 CPLR THRU...

Page 220: ...LO OUT J5 W48 SR N5222 20056 1 A33 reference mixer switch to A23 mixer brick R1 W49 SR N5222 20057 1 REF 3 RCVR R3 IN to A24 mixer brick R3 W50 SR N5222 20058 1 REF 4 RCVR R4 IN to A24 mixer brick R4 W51 F N5242 60017 1 A23 mixer brick A to A20 IF multiplexer P1 W52 F N5242 60021 1 A23 mixer brick R1 to A20 IF multiplexer P411 W53 F N5242 60022 1 A23 mixer brick R2 to A20 IF multiplexer P412 W54 F...

Page 221: ...Keysight N5221A 22A Service Guide 6 65 Replaceable Parts Replaceable Parts Listings Figure 6 27 Bottom RF Cables 4 Port Option 401 ...

Page 222: ...O to A19 test set motherboard J301 16R N5242 60006 A19 test set motherboard J212 to A23 mixer brick 1 16R N5242 60006 A19 test set motherboard J213 to A24 mixer brick 2 3W N5242 60009 A19 test set motherboard J222 to ports 2 4 LED board J1 24R N5230 60014 Was N5242 60011 A19 test set motherboard J209 to A21 HMA26 5 100R N5242 60004 A14 system motherboard J1 to A19 test set motherboard J1 to A20 IF...

Page 223: ...Keysight N5221A 22A Service Guide 6 67 Replaceable Parts Replaceable Parts Listings Figure 6 28 Bottom Ribbon Cables and Wire Harnesses 4 Port Option 401 ...

Page 224: ...eceiver coupler Test port 2 receiver coupler A29 A30 A31 A32 5087 7813 4 Test port 1 coupler Test port 3 coupler Test port 4 coupler Test port 2 coupler A64 A65 A66 A67 08493 60026 4 Test port 1 6 dB attenuator Test port 3 6 dB attenuator Test port 4 6 dB attenuator Test port 2 6 dB attenuator N5240 60058 2 Front panel LED board a Part numbers in italic typeface are for rebuilt exchange assemblies...

Page 225: ...Keysight N5221A 22A Service Guide 6 69 Replaceable Parts Replaceable Parts Listings Figure 6 29 Bottom Assemblies 4 Port Option 410 ...

Page 226: ...bles All Options on page 6 19 W46 SR N5222 20061 1 W45 to rear panel EXT TSET DRIVE RF OUT J6 W47 SR N5222 20060 1 A23 mixer brick to EXT TSET DRIVE LO OUT J5 W51 F N5242 60017 1 A23 mixer brick A to A20 IF multiplexer P1 W52 F N5242 60021 1 A23 mixer brick R1 to A20 IF multiplexer P411 W53 F N5242 60022 1 A23 mixer brick R2 to A20 IF multiplexer P412 W54 F N5242 60018 1 A23 mixer brick B to A20 I...

Page 227: ...N5222 20086 1 A32 port 2 coupler to A23 mixer brick B W109 SR N5222 20096 1 A64 6 dB attenuator to A29 port 1 coupler W110 SR N5222 20099 1 A65 6 dB attenuator to A30 port 3 coupler W111 SR N5222 20097 1 A66 6 dB attenuator to A31 port 4 coupler W112 SR N5222 20098 1 A67 6 dB attenuator to A32 port 2 coupler a SR semirigid coaxial cable F flexible coaxial cable Reference Designator Typea Part Numb...

Page 228: ...6 72 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 30 Bottom RF Cables 4 Port Option 410 ...

Page 229: ...R N5242 60006 A19 test set motherboard J212 to A23 mixer brick 1 16R N5242 60006 A19 test set motherboard J213 to A24 mixer brick 2 3W N5242 60009 A19 test set motherboard J222 to ports 2 4 LED board J1 24R N5230 60014 Was N5242 60011 A19 test set motherboard J209 to A21 HMA26 5 100R N5242 60004 A14 system motherboard J1 to A19 test set motherboard J1 to A20 IF multiplexer board J1 36R 8121 0834 R...

Page 230: ...6 74 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 31 Bottom Ribbon Cables and Wire Harnesses 4 Port Option 410 ...

Page 231: ...Test port 3 coupler Test port 4 coupler Test port 2 coupler A33 5087 7758 1 Reference mixer switch A34 A35 A36 A37 33321 60077 4 Test port 1 source attenuator Test port 3 source attenuator Test port 4 source attenuator Test port 2 source attenuator A42 A43 A44 A45 33321 60078 4 Port 1 receiver attenuator Port 3 receiver attenuator Port 4 receiver attenuator Port 2 receiver attenuator N5240 60058 2...

Page 232: ...6 76 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 32 Bottom Assemblies 4 Port Option 417 ...

Page 233: ...to front panel REF 1 SOURCE OUT W36 SR N5222 20032 1 REF 1 RCVR R1 IN to A33 reference mixer switch W37 SR N5222 20101 1 A33 reference mixer switch to A23 mixer brick R1 W40 SR N5222 20039 1 REF 2 RCVR R2 IN to A23 mixer brick R2 W41 SR Refer to Top Cables All Cables All Options on page 6 19 W42 SR N5222 20009 1 A21 HMA26 5 to A22 splitter W43 SR N5222 20007 1 A22 splitter to A23 mixer brick W45 S...

Page 234: ...0031 1 Port 1 RCVR A IN to A42 port 1 receiver attenuator W88 SR N5222 20004 1 A42 port 1 receiver attenuator to A23 mixer brick A W93 SR N5222 20037 1 Port 2 RCVR B IN to A45 port 2 receiver attenuator W94 SR N5222 20010 1 A45 port 2 receiver attenuator to A23 mixer brick B a SR semirigid coaxial cable F flexible coaxial cable Reference Designator Typea Part Number Qty Description ...

Page 235: ...Keysight N5221A 22A Service Guide 6 79 Replaceable Parts Replaceable Parts Listings Figure 6 33 Bottom RF Cables 4 Port Option 417 Ports 1 and 2 ...

Page 236: ...EF 4 RCVR R4 IN to A24 mixer brick R4 W41 SR Refer to Top Cables All Cables All Options on page 6 19 W44 SR N5222 20008 1 A22 splitter to A24 mixer brick W55 F N5242 60024 1 A24 mixer brick D to A20 IF multiplexer P801 W56 F N5242 60019 1 A24 mixer brick R4 to A20 IF multiplexer P414 W57 F N5242 60020 1 A24 mixer brick R3 to A20 IF multiplexer P413 W58 F N5242 60023 1 A24 mixer brick C to A20 IF m...

Page 237: ...Keysight N5221A 22A Service Guide 6 81 Replaceable Parts Replaceable Parts Listings Figure 6 34 Bottom RF Cables 4 Port Option 417 Ports 3 and 4 ...

Page 238: ... 1 receiver attenuator 16R N5242 60006 A19 test set motherboard J212 to A23 mixer brick 1 16R N5242 60006 A19 test set motherboard J213 to A24 mixer brick 2 3W N5242 60009 A19 test set motherboard J222 to ports 2 4 LED board J1 10R 8121 0982 Was N5242 60007 A19 test set motherboard J207 to A44 port 4 receiver attenuator 14R N5242 60008 A19 test set motherboard J203 to A36 port 4 source attenuator ...

Page 239: ...Keysight N5221A 22A Service Guide 6 83 Replaceable Parts Replaceable Parts Listings Figure 6 35 Bottom Ribbon Cables and Wire Harnesses 4 Port Option 417 ...

Page 240: ...A34 A35 A36 A37 33321 60077 4 Test port 1 source attenuator Test port 3 source attenuator Test port 4 source attenuator Test port 2 source attenuator A38 A39 A40 A41 5067 4865 4 Test port 1 bias tee includes wire harness Test port 3 bias tee includes wire harness Test port 4 bias tee includes wire harness Test port 2 bias tee includes wire harness A42 A43 A44 A45 33321 60078 4 Port 1 receiver atte...

Page 241: ...Keysight N5221A 22A Service Guide 6 85 Replaceable Parts Replaceable Parts Listings Figure 6 36 Bottom Assemblies 4 Port Option 419 ...

Page 242: ...e mixer switch to A23 mixer brick R1 W40 SR N5222 20039 1 REF 2 RCVR R2 IN to A23 mixer brick R2 W41 SR Refer to Top Cables All Cables All Options on page 6 19 W42 SR N5222 20009 1 A21 HMA26 5 to A22 splitter W43 SR N5222 20007 1 A22 splitter to A23 mixer brick W45 SR Refer to Top Cables All Cables All Options on page 6 19 W46 SR N5222 20061 1 W45 to rear panel EXT TSET DRIVE RF OUT J6 W47 SR N522...

Page 243: ...13 1 A41 port 2 bias tee to A32 port 2 coupler W87 SR N5222 20031 1 Port 1 RCVR A IN to A42 port 1 receiver attenuator W88 SR N5222 20004 1 A42 port 1 receiver attenuator to A23 mixer brick A W93 SR N5222 20037 1 Port 2 RCVR B IN to A45 port 2 receiver attenuator W94 SR N5222 20010 1 A45 port 2 receiver attenuator to A23 mixer brick B a SR semirigid coaxial cable F flexible coaxial cable Reference...

Page 244: ...6 88 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 37 Bottom RF Cables 4 Port Option 419 Ports 1 and 2 ...

Page 245: ... 20008 1 A22 splitter to A24 mixer brick W55 F N5242 60024 1 A24 mixer brick D to A20 IF multiplexer P801 W56 F N5242 60019 1 A24 mixer brick R4 to A20 IF multiplexer P414 W57 F N5242 60020 1 A24 mixer brick R3 to A20 IF multiplexer P413 W58 F N5242 60023 1 A24 mixer brick C to A20 IF multiplexer P601 W59 W63 F Refer to Top Cables All Cables All Options on page 6 19 W75 SR N5222 20002 1 A26 port 3...

Page 246: ...Guide Replaceable Parts Replaceable Parts Listings 6 W92 SR N5222 20026 1 A44 port 4 receiver attenuator to A24 mixer brick D a SR semirigid coaxial cable F flexible coaxial cable Reference Designator Typea Part Number Qty Description ...

Page 247: ...Keysight N5221A 22A Service Guide 6 91 Replaceable Parts Replaceable Parts Listings Figure 6 38 Bottom RF Cables 4 Port Option 419 Ports 3 and 4 ...

Page 248: ...ixer brick 2 2W P O Bias Tee A19 test set motherboard J541 to A38 port 1 bias tee 2W P O Bias Tee A19 test set motherboard J543 to A39 port 3 bias tee 2W P O Bias Tee A19 test set motherboard J544 to A40 port 4 bias tee 3W N5242 60009 A19 test set motherboard J222 to ports 2 4 LED board J1 2W P O Bias Tee A19 test set motherboard J542 to A41 port 2 bias tee 10R 8121 0982 Was N5242 60007 A19 test s...

Page 249: ...Keysight N5221A 22A Service Guide 6 93 Replaceable Parts Replaceable Parts Listings Figure 6 39 Bottom Ribbon Cables and Wire Harnesses 4 Port Option 419 ...

Page 250: ... 0149 1 Hole plug N5242 00010 1 Rear panel 2190 0958 Was 2190 0034 Lock washer 0380 0644 Jack screw 2190 0584 Lock washer 0380 4670 Jack screw 0 442 inch length 1251 7812 Jack screw 0 5 inch length N5242 60005 1 PWR I O cable assembly 1250 4261 Was 1810 0118 2 Termination 50 ohm load 8121 0834 1 HANDLER I O cable assembly 2190 0068 Lock washer 2950 0054 Hex nut Bottom foot Refer to External Hardwa...

Page 251: ...Keysight N5221A 22A Service Guide 6 95 Replaceable Parts Replaceable Parts Listings Figure 6 40 Rear Panel Assembly All Options ...

Page 252: ...ttach fan bracket to chassis 4 to attach power supply bracket to inner panels left side bracket and fan bracket and 3 to attach A14 system motherboard to the chassis Chassis Refer to Internal Hardware and Miscellaneous Parts All Options on page 6 101 0515 1946 3 Machine screw M3 0 x 6 flat head To attach power supply bracket to power supply W1312 00062 1 Power supply bracket 0515 0375 6 Machine sc...

Page 253: ...Keysight N5221A 22A Service Guide 6 97 Replaceable Parts Replaceable Parts Listings Figure 6 42 Top Hardware and Miscellaneous Parts Top View All Options ...

Page 254: ...es of mixer brick mounting block 8 to attach A25 A28 receiver couplers to their mounting brackets 0515 0374 4 Machine screw M3 0 x 10 pan head To attach mixer brick mounting block N5242 20103 1 Mounting block For A23 and A24 mixer bricks N5242 00007 1 Bracket For A34 A37 source attenuators A39 A41 bias tees and A42 A45 receiver attenuators 0515 0430 30 Machine screw M3 0 x 6 pan head 8 to attach r...

Page 255: ...cket For A21 HMA26 5 N5242 00019 1 Stabilizer bracket Between A19 test set motherboard and A20 IF mux board 1250 4261 Was 1810 0118 2 Termination 50 ohm load For J6 and J7 0515 0669 4 Machine screw M4 0 x 0 7 pan head To attach A20 IF MUX to test set deck 1250 3805 12 24 Bulkhead connector f f PC 3 5 50 ohm includes hex nut and washer Qty 12 for options 201 217 and 219 qty 24 for options 401 417 a...

Page 256: ...6 100 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 43 Bottom Hardware and Miscellaneous Parts All Options ...

Page 257: ...er bracket N5242 00001 1 Chassis 0515 0372 39 Machine screw M3 0 x 8 pan head 4 to attach midplane bracket to left and right side inner brackets 6 to attach front bracket to left and right side inner brackets 2 to attach side bracket to front bracket 5 to attach side bracket to chassis 22 to attach chassis to left and right side inner brackets midplane bracket and front bracket N5242 00017 1 Front...

Page 258: ...6 102 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 44 Internal Hardware and Miscellaneous Parts All Options ...

Page 259: ...5 0 x 18 flat head To attach strap handle 5021 2840 4 Key lock for bottom foot 5041 9167 4 Bottom foot W1312 40032 4 Hole plug When analyzer is rack mounted 0515 0372 16 Machine screw M3 0 x 8 pan head To attach inner cover N5221 00001 1 Inner cover retaining shield 0515 1946 9 Machine screw M3 0 x 6 flat head To attach inner cover 5041 9691 2 Trim strip Not shown 5023 1399 2 Front handle Not show...

Page 260: ... Hardware and Miscellaneous Parts All Options Miscellaneous Part Numbers Table 6 3 Part Numbers for Miscellaneous Parts and Accessories Description Model or Part Number Service Tools 1 4 inch and 5 16 inch open end wrench thin profile 8710 0510 5 16 inch 8 mm open end torque wrench 0 9 N m 8 in lb 8710 1765 ...

Page 261: ...only Must be printed from the Keysight Web site E8356 90001 Service Guide Not available in printed form Part number is for reference only Must be printed from the Keysight Web site N5222 90001 USB Accessories Mouse 1150 7799 Keyboard U S style 0960 3245 Was 1150 7896 USB to GPIB adapter 82357B GPIB Cables GPIB Adapter GPIB cable 0 5 meter 1 6 feet 10833D GPIB cable 1 meter 3 3 feet 10833A GPIB cab...

Page 262: ...ithout handles Option 1CM N5231AU 1CM or N5232AU 1CM or N5239AU 1CM Option 1CM includes the following separately orderable items Rack mount kit rack mount flanges and hardware 1CM042A Was 5063 9217 Rack mount rail set E3663AC Rack mount kit for analyzers with handles Option 1CP N5231AU 1CP or N5232AU 1CP or N5239AU 1CP Option 1CP includes the following separately orderable items Rack mount kit rac...

Page 263: ...s rack support flanges and front panels 6010 1148 a For rack mount use you must replace factory installed ruggedized handles thick aluminum no trim with classic handles thin aluminum with plastic trim included with Option 1CP Table 6 3 Part Numbers for Miscellaneous Parts and Accessories Continued Description Model or Part Number ...

Page 264: ...6 108 Keysight N5221A 22A Service Guide Replaceable Parts Replaceable Parts Listings 6 ...

Page 265: ... A table of removal and replacement procedures and the corresponding page number where they are located page 7 4 Removal and Replacement Procedures The actual procedures for removing and replacing the major assemblies in your analyzer The procedures occur in assembly reference designator numerical order See Table 7 1 on page 7 4 for specific procedures Post Repair Procedures A table for the proper...

Page 266: ...vers are removed Energy available at many points may if contacted result in personal injury The power cord is connected to internal capacitors that may remain live for 10 seconds after disconnecting the plug from its power supply assembly Wait at least 10 seconds after disconnecting the plug before removing the covers The detachable power cord is the instrument disconnecting device It disconnects ...

Page 267: ...llowing procedures only at a static safe workstation and wear a grounded wrist strap Many of the assemblies in this instrument are very susceptible to damage from electrostatic discharge ESD Perform the following procedures only at a static safe workstation and wear a grounded wrist strap To reduce the chance of electrostatic discharge follow all of the recommendations outlined in Electrostatic Di...

Page 268: ...26 5 GHz source boards Frequency reference board Signal processing ADC module SPAM board page 7 15 A14 System motherboard page 7 18 A15 Midplane board page 7 21 A16 Power supply page 7 23 A17 CPU board page 7 25 A18 GPIB board page 7 27 A19 Test set motherboard page 7 29 A20 IF multiplexer board page 7 31 A21 Multiplier amplifier 26 5 HMA26 5 page 7 33 A22 Splitter page 7 35 A23 A24 Mixer bricks p...

Page 269: ...Port 2 source step attenuator page 7 45 A38 A39 A40 A41 Port 1 bias tee Port 3 bias tee Port 4 bias tee Port 2 bias tee page 7 45 page 7 48 A42 A43 A44 A45 Port 1 receiver step attenuator Port 3 receiver step attenuator Port 4 receiver step attenuator Port 2 receiver step attenuator page 7 45 A51 Solid state drive page 7 50 Table 7 1 List of Procedures Continued Reference Designator Assembly Descr...

Page 270: ...ver toward the rear of the analyzer and remove it Removing the Inner Cover Refer to Figure 7 1 for this procedure 1 With a T 10 TORX driver remove the 12 pan head screws item 2 With a T 10 TORX driver remove the 9 flat head screws item 3 Lift off the cover Replacement Procedure 1 On the top side of the PNA carefully position the grey flex cables so they can t be pinched between the covers and the ...

Page 271: ...Keysight N5221A 22A Service Guide 7 7 Repair and Replacement Procedures Removing the Covers Figure 7 1 Outer and Inner Cover Removal ...

Page 272: ...overs on page 7 6 3 With a 5 16 inch torque wrench remove all the semirigid jumpers item from the front panel 4 With a T 10 TORX driver remove the 12 screws item from the sides of the frame 5 Slide the front panel over the test port connectors 6 Disconnect the ribbon cable item from the A1 front panel interface board Replacement Procedure 1 Reverse the order of the removal procedure 2 Perform the ...

Page 273: ...Keysight N5221A 22A Service Guide 7 9 Repair and Replacement Procedures Removing and Replacing the Front Panel Assembly Figure 7 2 Front Panel Assembly Removal ...

Page 274: ...ng screws item from the USB board and unplug it from the A1 front panel interface board Removing the A1 Front Panel Interface Board and Keypad Assembly 1 Remove the A2 USB board as outlined above 2 Remove the round knob RPG from the front panel by gently pulling the knob forward 3 Disconnect the following cables from the A1 front panel interface board display cable item inverter board cable item t...

Page 275: ...nect the flat flex cable from the touchscreen 3 Remove two screws item and remove the touchscreen controller board Removing the Power Switch Board and Power Button Keypad 1 Disconnect the power switch cable item from the power switch board 2 Remove two screws item and remove the power switch board 3 The power button keypad can now be removed from the power switch board by gently pulling each of th...

Page 276: ...creen controller board cable item and power switch cable item 2 Remove six screws item from the A3 display assembly and remove the A3 display assembly from the front panel assembly 3 The touch screen can now be removed from the front panel assembly Note the orientation of the touch screen in the front panel assembly for installation of the new touch screen To replace the touch screen note the orie...

Page 277: ...play cable item can be removed by removing the three screws item that attach it to the LCD display hold down bracket item 5 The LCD display can be removed by disconnecting the LCD cable from the inverter board and then removing the four screws item that attach it to the LCD display hold down bracket item Note the location of the four spacers item before separating the LCD display from the hold dow...

Page 278: ...and Other Front Panel Subassemblies 7 Figure 7 5 A3 Display Assembly and Touch Screen Removal 2 Replacement Procedure 1 Reverse the order of the removal procedure 2 Perform the post repair adjustments verifications and performance tests that pertain to this removal procedure Refer to Table 7 2 on page 7 60 ...

Page 279: ...rews item one at each end of the board from the source board to be removed d Lift the two extractors item one at each end of the board Adjust the slack in the gray flexible cable as needed to move it out of the way and lift the board out of the chassis 4 A4 A10 A11 A12 and A13 boards a Remove all cables connected to the top of the board to be removed Note the location of each cable for reinstallat...

Page 280: ... adjustments verifications and performance tests that pertain to this removal procedure Refer to Table 7 2 on page 7 60 The A4 A11 and A13 synthesizer boards will not perform correctly and will cause the PNA to display errors until the Synthesizer Bandwidth Adjustment and the EE Default Adjustment are completed as per Table 7 2 on page 7 60 ...

Page 281: ...Keysight N5221A 22A Service Guide 7 17 Repair and Replacement Procedures Removing and Replacing the A4 A13 Boards Figure 7 6 A4 A5 A8 A10 A11 A12 and A13 Boards Removal ...

Page 282: ... Midplane Board on page 7 21 6 Remove the A4 A13 boards Refer to Removing and Replacing the A4 A13 Boards on page 7 15 7 Remove the fan bracket and fans Refer to Removing and Replacing the Fans on page 7 56 8 Turn the analyzer over so that the bottom side is up and remove four screws item that secure the bottom of the midplane bracket to the chassis 9 Turn the analyzer back over so that the top si...

Page 283: ...edures Removing and Replacing the A14 System Motherboard Replacement Procedure 1 Reverse the order of the removal procedure 2 Perform the post repair adjustments verifications and performance tests that pertain to this removal procedure Refer to Table 7 2 on page 7 60 ...

Page 284: ...7 20 Keysight N5221A 22A Service Guide Repair and Replacement Procedures Removing and Replacing the A14 System Motherboard 7 Figure 7 7 A14 System Motherboard Removal ...

Page 285: ...on to disengage the A15 midplane board from the A14 system motherboard 7 Note the positions of the five rubber grommets item on the bottom three A15 midplane board alignment pins Remove these rubber grommets and retain them for reinstallation on the new A15 midplane board 8 Lift the A15 midplane board out of the analyzer Replacement Procedure 1 Reverse the order of the removal procedure Be careful...

Page 286: ...7 22 Keysight N5221A 22A Service Guide Repair and Replacement Procedures Removing and Replacing the A15 Midplane Board 7 Figure 7 8 A15 Midplane Board Removal ...

Page 287: ...7 9 for this procedure 1 Disconnect the power cord 2 Remove the outer and inner covers Refer to Removing the Covers on page 7 6 3 Remove the three flat head screws item from the power supply bracket 4 Remove the seven pan head screws item from the power supply rear panel 5 Slide the A16 power supply assembly out the rear of the analyzer Replacement Procedure 1 Reverse the order of the removal proc...

Page 288: ...7 24 Keysight N5221A 22A Service Guide Repair and Replacement Procedures Removing and Replacing the A16 Power Supply Assembly 7 Figure 7 9 A16 Power Supply Assembly Removal ...

Page 289: ...ard toward the sides of the analyzer as shown in the illustration This will disengage the A17 CPU board assembly from the A15 midplane board 5 Slide the A17 CPU board assembly out the rear of the analyzer 6 If the older 1 6 GHz CPU board is being replaced with the new 2 0 GHz CPU board a new A51 solid state drive assembly must also be installed Refer to Removing and Replacing the A51 Solid State D...

Page 290: ...7 26 Keysight N5221A 22A Service Guide Repair and Replacement Procedures Removing and Replacing the A17 CPU Board Assembly 7 Figure 7 10 A17 CPU Board Assembly Removal ...

Page 291: ... Refer to Removing the Covers on page 7 6 3 Remove the A16 power supply assembly Refer to Removing and Replacing the A16 Power Supply Assembly on page 7 23 4 Remove the A17 CPU board assembly Refer to Removing and Replacing the A17 CPU Board Assembly on page 7 25 5 Remove the rear panel Refer to Removing and Replacing the Rear Panel on page 7 52 6 Slide the A18 GPIB board out the rear of the analy...

Page 292: ...7 28 Keysight N5221A 22A Service Guide Repair and Replacement Procedures Removing and Replacing the A18 GPIB Board 7 Figure 7 11 A18 GPIB Board Removal ...

Page 293: ... Remove connector hardware item from 11 rear panel BNC connectors When reinstalling use a 5 8 inch open end torque wrench set to 21 in lbs 6 Remove connector hardware item from the rear panel TEST SET I O connector When reinstalling use a 3 16 inch open end torque wrench set to 6 in lbs 7 Remove 10 screws item from the A19 test set motherboard When reinstalling use a T 10 TORX driver set to 9 in l...

Page 294: ...7 30 Keysight N5221A 22A Service Guide Repair and Replacement Procedures Removing and Replacing the A19 Test Set Motherboard 7 Figure 7 12 A19 Test Set Motherboard Removal ...

Page 295: ...ALL gray flexible RF cables item from the A20 IF multiplexer board 7 Remove connector hardware item from five rear panel RF connectors 8 Remove connector hardware item from the rear panel PULSE I O connector 9 Remove four screws item from the stabilizer bracket and remove the stabilizer bracket 10 Remove four screws item from the A20 IF multiplexer board 11 Slide the A20 IF multiplexer board towar...

Page 296: ...7 32 Keysight N5221A 22A Service Guide Repair and Replacement Procedures Removing and Replacing the A20 IF Multiplexer Board 7 Figure 7 13 A20 IF Multiplexer Board Removal ...

Page 297: ...item from the A21 HMA26 5 assembly 5 Disconnect cable W41 from the A21 HMA26 5 6 Remove cable W42 from between the A21 HMA26 5 and the A22 splitter 7 Remove two screws item from the A21 HMA26 5 mounting bracket 8 Remove the mounting bracket with the A21 HMA26 5 attached from the analyzer 9 Remove four screws item that attach the A21 HMA26 5 to the mounting bracket Replacement Procedure 1 Reverse t...

Page 298: ...7 34 Keysight N5221A 22A Service Guide Repair and Replacement Procedures Removing and Replacing the A21 HMA26 5 7 Figure 7 14 A21 HMA26 5 Removal ...

Page 299: ...analyzer bottom side up 4 Disconnect cable W42 at the A22 splitter connection 5 Remove cable W43 from between the A22 splitter and the A23 mixer brick 6 Remove cable W44 from between the A22 splitter and the A24 mixer brick 7 Remove two screws item from the A22 splitter and lift the splitter out of the analyzer Replacement Procedure 1 Reverse the order of the removal procedure Torque all RF cable ...

Page 300: ...7 36 Keysight N5221A 22A Service Guide Repair and Replacement Procedures Removing and Replacing the A22 Splitter 7 Figure 7 15 A22 Splitter Removal ...

Page 301: ...lift the mixer brick mounting block out of the analyzer just enough to allow the gray flexible RF cables item to be disconnected It may be necessary to loosen the connector at the other end of some of the semirigid cables to allow them to be moved enough Note the locations of each of the gray flexible cables for reconnection later Disconnect these cables and remove the mixer brick mounting block w...

Page 302: ...he A24 mixer brick remember to install the short circuit termination item removed from the old mixer brick onto the new mixer brick in the same location Torque all RF cable connections to 10 in lbs 2 Perform the post repair adjustments verifications and performance tests that pertain to this removal procedure Refer to Table 7 2 on page 7 60 Figure 7 16 A23 and A24 Mixer Bricks Removal ...

Page 303: ... item from the mounting bracket of the receiver coupler to be replaced 6 Move the disconnected semirigid cables out of the way and lift the receiver coupler mounting bracket with the receiver coupler attached out of the analyzer It may be necessary to loosen the connector at the other end of some of the semirigid cables to allow them to be moved enough 7 Remove two screws that attach the receiver ...

Page 304: ... 40 Keysight N5221A 22A Service Guide Repair and Replacement Procedures Removing and Replacing the A25 A28 Receiver Couplers and Mounting Brackets 7 Figure 7 17 A25 through A28 Receiver Couplers Removal ...

Page 305: ...e removed 6 Disconnect the wire harness item from the corresponding front panel LED board and place it out of the way 7 Remove the coupler nut item from each coupler to be removed 8 Move the disconnected semirigid cables out of the way and remove the coupler s from the analyzer On 4 port models separate the coupler pair Replacement Procedure 1 Reverse the order of the removal procedure Adhere a ne...

Page 306: ...7 42 Keysight N5221A 22A Service Guide Repair and Replacement Procedures Removing and Replacing the A29 A32 Test Port Couplers 7 Figure 7 18 A29 through A32 Test Port Couplers Removal ...

Page 307: ...side of the test set deck 6 Move the disconnected semirigid cables out of the way and lift the A33 reference mixer switch and mounting bracket out of the analyzer 7 Disconnect the wire harness cable item from the A33 reference mixer switch 8 Remove four screws item that attach the A33 reference mixer switch to its mounting bracket Replacement Procedure 1 Reverse the order of the removal procedure ...

Page 308: ...7 44 Keysight N5221A 22A Service Guide Repair and Replacement Procedures Removing and Replacing the A33 Reference Mixer Switch 7 Figure 7 19 A33 Reference Mixer Switch Removal ...

Page 309: ...o which they are attached must be removed as a complete assembly For some models especially 2 port models this may not be necessary it may be possible to remove only the bias tee In this case refer to Removing and Replacing the A38 A41 Bias Tees on page 7 48 6 Disconnect the ribbon cable item from the attenuators to be removed 7 Disconnect the wire harness cable item for the bias tee to be removed...

Page 310: ...r Attenuators 7 11 Remove two screws item to remove the attenuator or bias tee to be replaced from the mounting bracket Replacement Procedure 1 Reverse the order of the removal procedure Torque all cable connections to 10 in lbs 2 Perform the post repair adjustments verifications and performance tests that pertain to this removal procedure Refer to Table 7 2 on page 7 60 ...

Page 311: ... Guide 7 47 Repair and Replacement Procedures Removing and Replacing the A34 A37 Source Attenuators the A38 A41 Bias Tees and the A42 A45 Receiver Attenuators Figure 7 20 Source and Receiver Step Attenuators and Bias Tees Removal ...

Page 312: ... bias tee is attached to facilitate replacing the bias tee If this is the case refer to Removing and Replacing the A34 A37 Source Attenuators the A38 A41 Bias Tees and the A42 A45 Receiver Attenuators on page 7 45 6 Disconnect two semirigid cables item from the bias tee to be removed 7 Remove two screws item from the bias tee to be removed Make note of the location of the wire harness cable ground...

Page 313: ...r brackets so that the port 1 and port 3 bias tees capacitors face each other The port 2 and port 4 bias tee capacitors should also face each other 3 Perform the post repair adjustments verifications and performance tests that pertain to this removal procedure Refer to Table 7 2 on page 7 60 Figure 7 21 A38 through A41 Bias Tees Removal Figure 7 22 Orientation of Bias Tee Capacitors ...

Page 314: ...iles Keysight Network Analyzer and copy USER_CALKITFILE to a USB flash memory drive Also copy any personal user files that you wish to preserve If installing an SSD for Windows 7 for more information on the N8983A SSD refer to the Windows 7 Operating System Upgrade Kit Installation Note available online at http literature cdn keysight com litweb pdf N8983 90001 pdf Tools Required T 10 TORX driver ...

Page 315: ...ures Removing and Replacing the A51 Solid State Drive SSD Install Backup Files onto the New Solid State Drive The files that were previously saved onto a USB flash memory drive must now be installed onto the new SSD The network analyzer must be powered up and operating ...

Page 316: ... Removing and Replacing the A17 CPU Board Assembly on page 7 25 5 Remove the short item and the 50 ohm load s item 6 Remove the connector hardware item from each of the five multi pin connectors The hardware is not the same on each connector so note which hardware goes with which connector 7 Remove the connector hardware item from each of the RF connectors The hardware is not the same on each conn...

Page 317: ...Keysight N5221A 22A Service Guide 7 53 Repair and Replacement Procedures Removing and Replacing the Rear Panel Figure 7 24 Rear Panel Removal ...

Page 318: ...ocedure Refer to Figure 7 18 for this procedure 1 Disconnect the power cord 2 Remove the test port couplers Refer to Removing and Replacing the A29 A32 Test Port Couplers on page 7 41 3 Remove two screws item from the LED board to be removed and remove the LED board from the analyzer Replacement Procedure 1 Reverse the order of the removal procedure 2 Perform the post repair adjustments verificati...

Page 319: ...Keysight N5221A 22A Service Guide 7 55 Repair and Replacement Procedures Removing and Replacing the Front Panel LED Boards Figure 7 25 Front Panel LED Boards Removal ...

Page 320: ... and Replacing the A16 Power Supply Assembly on page 7 23 5 Remove five screws item that attach the fan bracket to the chassis 6 Remove three screws item that attach the rear panel to the fan bracket 7 Raise the fan bracket out of the analyzer just enough to access the fan cables Disconnect the fan cables from the A14 system motherboard connectors item 8 Remove the fan bracket and fans from the an...

Page 321: ...Keysight N5221A 22A Service Guide 7 57 Repair and Replacement Procedures Removing and Replacing the Fans Figure 7 26 B1 Fan Removal ...

Page 322: ...age 7 25 3 Remove top cover attachment screws item and item 4 Lift the top cover off of the CPU board assembly 5 Remove the battery from the battery holder by lifting it at the open end of the holder and then sliding it from under the clip item 6 DO NOT THROW AWAY THE BATTERY COLLECT IT AS SMALL CHEMICAL WASTE Refer to Lithium Battery Disposal on page 1 10 for additional information on battery dis...

Page 323: ...Keysight N5221A 22A Service Guide 7 59 Repair and Replacement Procedures Removing and Replacing the Lithium Battery Figure 7 27 Lithium Battery Removal ...

Page 324: ...assembly No adjustment needed A3 Display Test in Chapter 4 A4 13 5 GHz source 1 synthesizer board EE Default Adjustment Synth Src1 only Synthesizer Bandwidth Adjustmenta Source Adjustment IF Gain Adjustment Receiver Characterization Receiver Adjustment IF Response Adjustment Option 090 093 or 094 Only Frequency Accuracy Test Source Power Accuracy Test Source Maximum Power Output Test Source Power ...

Page 325: ...ce Maximum Power Output Test Source Power Linearity Test The Operator s Check A12 SPAM board Source Adjustment IF Gain Adjustment Receiver Characterization Receiver Adjustment IF Response Adjustment Option 090 093 or 094 Only Noise Floor Test Trace Noise Test A13 13 5 GHz source 2 synthesizer board EE Default Adjustment Synth Src2 only Synthesizer Bandwidth Adjustmenta Source Adjustment IF Gain Ad...

Page 326: ...ly The Operator s Check A21 HMA26 5 EE Default Adjustment LO Drive only EE Default Adjustment LO Drive Noise Figure only Option 029 equipped PNA Source Adjustment IF Gain Adjustment Receiver Characterization Receiver Adjustment IF Response Adjustment Option 090 093 or 094 Only Noise Floor Test Receiver Compression Test Dynamic Accuracy Test A22 splitter Source Adjustment IF Gain Adjustment Receive...

Page 327: ...in Adjustment Receiver Characterization Receiver Adjustment IF Response Adjustment Option 090 093 or 094 Only Source Maximum Power Output Test Calibration Coefficients Test A42 A45 receiver step attenuators Receiver Characterization Receiver Adjustment IF Response Adjustment Option 090 093 or 094 Only Noise Floor Test Receiver Compression Test Dynamic Accuracy Test Calibration Coefficients Test A5...

Page 328: ...7 64 Keysight N5221A 22A Service Guide Repair and Replacement Procedures Post Repair Procedures 7 ...

Page 329: ...ns that have been added to your analyzer repair lost or damaged option data install or change a serial number page 8 11 Firmware Upgrades How to check your analyzer s current firmware revision and where to locate firmware upgrades page 8 15 Operating System Recovery Where to find the information on recovering from a damaged operating system page 8 16 Correction Constants How to store correction co...

Page 330: ...w the Principles of Connector Care on page 3 5 or to the calibration kit s user s and service guide Preventive Maintenance If you print or plot the error terms at set intervals weekly monthly and so forth you can compare current error terms to these records A stable system should generate repeatable error terms over long intervals for example six months Look for the following A long term trend oft...

Page 331: ...epresentation of signal flow through the measurement path The flowgraphs in Figure 8 1 Figure 8 2 Figure 8 3 and Figure 8 4 illustrate the error terms associated with measurement calibration for 1 port 2 port 3 port and 4 port configurations respectively Figure 8 1 Flowgraph of One Port Error Terms for Port 1 where E Error term Subscript D Directivity Always suspect calibration devices cables or i...

Page 332: ...erms are the same for a one port measurement on Port 2 S22 Figure 8 2 Flowgraph of Two Port Error Terms where E error term 1st Subscript D Directivity S Source Match R Reflection Tracking X Crosstalk Isolation L Load Match T Transmission Tracking 2nd Subscript F forward measurement Ports 1 to Port 2 R reverse measurement Ports 2 to Port 1 ...

Page 333: ...rward Source Match and Reverse Load Match TRK Forward Reflection Tracking and Reverse Transmission Tracking For the case of a full 3 port calibration port 1 has three Match error terms S11 source match S12 load match S13 load match and three Tracking error terms S11 reflection tracking S12 transmission tracking S13 transmission tracking There are six isolation terms not shown ...

Page 334: ...g and Reverse Transmission Tracking For the case of a full 4 port calibration port 1 has four Match error terms S11 source match S12 load match S13 load match S14 load match and four Tracking error terms S11 reflection tracking S12 transmission tracking S13 transmission tracking S12 transmission tracking There are eight isolation crosstalk terms not shown Accessing Error Terms Error terms can be a...

Page 335: ...re the displayed measurement trace to previously measured data or to the uncorrected performance specifications listed in Table 8 1 on page 8 8 6 Print numerical data or print a plot of the measurement results Programmatic Access to Error Terms GPIB Access to Error Terms You can access error terms by way of GPIB with Standard Commands for Programmable Instruments SCPI For more information on GPIB ...

Page 336: ...rror Term Dataa Parameter All options all ports Frequency Range 10 MHz to 50 MHz 50 MHz to 3 2 GHz 3 2 GHz to 10 GHz 10 GHz to 16 GHz 16 GHz to 24 GHz 24 GHz to 26 5 GHz Directivity 16 dBm 24 dBm 23 dBm 16 dBm 16 dBm 16 dBm Source Match 11 dBm 18 dBm 14 dBm 12 dBm 10 dBm 8 dBm Load Match 11 dBm 17 dBm 13 dBm 10 dBm 9 dBm 8 dBm 10 MHz to 50 MHz 50 MHz to 100 MHz 100 MHz to 500 MHz 500 MHz to 3 2 GH...

Page 337: ...SF and ESR are the forward and reverse uncorrected source match terms of the driven port They are obtained by measuring the reflection S11 S22 of an open and a short that are connected directly to the ports Source match is a measure of the match of the coupler as well as the match between all components from the source to the output port The measurements most affected by source match errors are re...

Page 338: ...cted forward and reverse isolation error terms that represent leakage between the test ports and the signal paths The isolation error terms are characterized by measuring transmission S21 S12 with loads attached to both ports during the measurement calibration isolation errors affect transmission measurements primarily where the measured signal level is very low The measurements most affected by i...

Page 339: ...S CERTIFICATE to obtain license key s for the option s listed on the certificate See the important note below System Service Option Enable When upgrading from one model number to another a new option entitlement certificate will be issued When this certificate is redeemed for a license key the automated system will ask for the instrument s Host ID Be sure to use the new Host ID that is associated ...

Page 340: ...ion 1 Start the option enable utility Refer to Accessing the Option Enable Utility on page 8 11 2 Click the arrow in the Select Desired Option box A list of available options similar to the list below will appear 020 Add IF inputs 021 Pulse Modulator on Source 1 022 Pulse Modulator on Source 2 025 4 Receiver Pulse Generator 086 Gain Compression Application 087 IMD Measurements 219 Src Rcvr Atten B...

Page 341: ... is written from the gen lic file into the EEPROM If the solid state drive is replaced a new gen lic file is automatically created when the Network Analyzer application starts by retrieving the data from the EEPROM Recovery of Data if Option or Model Numbers are Incorrect If the analyzer option or model numbers are not listed correctly on the analyzer display in either the Option Enable Dialog Box...

Page 342: ...o serial number has previously been entered the word NONE will be displayed 2 VERY CAREFULLY type the new serial number into the space provided and then click Change 3 If an error is made in entering the serial number obtain a clear code from Keysight enter the clear code in the space provided and click CLEAR The correct serial number can then be entered Use extreme care when entering the serial n...

Page 343: ...ng from the Internet If your network analyzer is connected to the Internet there are two methods available for checking the availability of and downloading new firmware Download directly from http www keysight com find pna Select your analyzer s model number in this web site to view available upgrades Press UTILITY then then AgileUpdate compares the firmware revision currently installed in your ne...

Page 344: ...e SSD Problems If you suspect that you have a solid state drive problem go to the Hard Drive Recovery link on the Keysight PNA Series Service Support Home Page on the Internet The URL for the Keysight PNA Series Service Support Home Page is http na support keysight com pna The URL for the Hard Drive Recovery page is http na support keysight com pna hdrecovery html ...

Page 345: ...ate leveled source signals and receive clean test signals Storing Correction Constants After performing any adjustment listed on page 3 41 in this manual store the correction constants to a backup file on the analyzer solid state drive by performing these steps Navigate to the EEPROM Backup Utility located at C Program Files Keysight Network Analyzer Service eebackup exe Run the program Click Back...

Page 346: ...8 18 Keysight N5221A 22A Service Guide General Purpose Maintenance Procedures Correction Constants 8 ...

Page 347: ...mber 16 removal and replacement illustrated 17 procedure 15 troubleshooting 35 A11 13 5 GHz LO synthesizer board illustrated 18 operation 9 part number 16 removal and replacement illustrated 17 procedure 15 troubleshooting 36 A12 SPAM board illustrated 18 operation analog 23 digital 29 part number 16 removal and replacement illustrated 17 procedure 15 troubleshooting 45 A13 13 5 GHz source 2 synth...

Page 348: ...ort 4 receiver coupler illustrated 55 62 69 85 part number 54 61 68 75 84 removal and replacement illustrated 40 procedure 39 troubleshooting 41 A28 test port 2 receiver coupler illustrated 22 28 35 41 48 55 62 69 85 part number 21 27 34 40 47 54 61 68 75 84 removal and replacement illustrated 40 procedure 39 troubleshooting 41 A29 test port 1 coupler illustrated 22 28 35 41 48 55 62 69 85 operati...

Page 349: ...l and replacement illustrated 47 procedure 45 troubleshooting 45 A44 test port 4 receiver step attenuator illustrated 84 85 operation 21 part number 75 removal and replacement illustrated 47 procedure 45 troubleshooting 45 A45 test port 2 receiver step attenuator illustrated 41 84 85 operation 21 part number 40 47 75 removal and replacement illustrated 47 procedure 45 troubleshooting 45 A5 26 5 GH...

Page 350: ...erboard 11 rear panel interconnects 11 12 22 30 rear panel replaceable parts illustrated 95 part numbers 94 strap handle illustrated 104 part number 103 system block diagram 2 3 system operation theory of 2 upgrades 3 warmup time 5 ANSI NCSL Z540 1 1994 non type verification 11 verification 10 assemblies rebuilt exchange procedure 5 rebuilt exchange program 4 replacement list of procedures 4 seque...

Page 351: ...semblies part numbers 75 replaceable RF cables illustrated 77 79 81 part numbers 80 broadband failure 34 C C receiver troubleshooting 29 typical power output 40 C trace troubleshooting 29 cable substitution 24 test port checks 12 14 15 17 19 connector repeatability failure 20 insertion loss failure 17 magnitude and phase stability failure 19 return loss failure 15 cables GPIB part numbers 105 requ...

Page 352: ...5 magnitude and phase stability 17 performing 14 return loss 14 COM 7 compression test receiver 35 configurable test set operation 16 configuration configurable test set 17 high dynamic range measurement 17 normal configuration measurement 17 connector care principles of 5 quick reference 5 repeatability check failure of 20 of test port cables 19 connectors care of 5 front panel 28 rear panel 11 1...

Page 353: ...lectrostatic discharge See ESD enabling options 12 entitlement certificate option 11 environment operating specifications 4 verification 4 equipment service test required 4 error terms 2 access to 6 via COM DCOM commands 7 via front panel 7 via SCPI commands using GPIB 7 cause of failure to 2 descriptions 8 directivity 9 flowgraph of one port 3 flowgraph of two port 4 5 6 identifying using flowgra...

Page 354: ...trated 22 28 35 41 48 55 62 69 85 100 part number 21 27 34 40 47 54 61 68 75 84 98 LED board removal and replacement illustrated 55 procedure 54 lower dress panel illustrated 11 part number 10 lower overlay illustrated 11 part number 10 nameplate illustrated 11 part number 10 operation 28 power switch board illustrated 14 parts list 12 power switch overlay illustrated 11 part number 10 subassembli...

Page 355: ...ons 8 interconnects front panel 28 HANDLER I O pin assignments 13 PULSE I O pin assignments 22 PWR I O pin assignments 14 rear panel 11 12 22 30 Display 30 EXT 10 MHz REF IN 11 EXT 10 MHz REF OUT 11 GPIB 30 HANDLER I O 12 LAN 30 TEST SET I O 12 USB 30 VGA 30 TEST SET I O pin assignments 12 internal analyzer replaceable hardware illustrated 102 part numbers 101 replaceable parts illustrated 102 par...

Page 356: ...2 69 85 operation 21 part number 21 27 34 40 47 54 61 68 75 84 removal and replacement illustrated 38 procedure 37 troubleshooting 44 model numbers upgrade kits 106 module exchange procedure 5 monitor external 15 motherboard system illustrated 18 operation 28 part number 16 removal and replacement illustrated 20 procedure 18 motherboard test set illustrated 22 28 35 41 48 55 62 69 85 part number 2...

Page 357: ...llustrated 60 67 74 part numbers 59 66 73 replaceable wire harnesses illustrated 60 67 74 part numbers 59 66 73 Option 419 bottom assembly replaceable RF cables illustrated 88 91 part numbers 86 89 replaceable ribbon cables illustrated 93 part numbers 92 replaceable wire harnesses illustrated 93 part numbers 92 Option 419 H85 bottom assembly replaceable RF cables illustrated 77 79 81 part numbers ...

Page 358: ...in bottom assembly Option 200 illustrated 22 28 35 part numbers 21 27 34 in bottom assembly Option 219 illustrated 48 part numbers 47 in bottom assembly Option 219 H85 part numbers 40 41 in bottom assembly Option 400 illustrated 55 62 69 part numbers 54 61 68 in bottom assembly Option 419 illustrated 85 part numbers 84 in bottom assembly Option 419 H85 part numbers 75 in external analyzer illustra...

Page 359: ...est port output accuracy test 31 linearity test 33 maximum test 32 pre repair procedures caution about 2 warnings about 2 preventive maintenance effect on error terms 2 procedure 15 processing subgroup operation 29 protection against ESD 7 4 3 4 3 PULSE I O adapter N1966A 3 connector pin assignments 22 PWR I O connector pin assignments 14 R R receiver troubleshooting 29 R trace troubleshooting 29 ...

Page 360: ...illustrated 20 part numbers 19 replaceable hardware in bottom assembly illustrated 100 part numbers 98 in external analyzer illustrated 104 part numbers 103 in internal analyzer illustrated 102 part numbers 101 in rear panel assembly illustrated 95 part numbers 94 in top assembly illustrated 96 97 part numbers 96 replaceable parts hardware in bottom assembly illustrated 100 part numbers 98 in bott...

Page 361: ...rated 20 part numbers 19 replacement A1 front panel interface board illustrated 11 procedure 10 A10 frequency reference board illustrated 17 procedure 15 A11 13 5 GHz LO synthesizer board illustrated 17 procedure 15 A12 SPAM board illustrated 17 procedure 15 A13 13 5 GHz source 2 synthesizer board illustrated 17 procedure 15 A14 motherboard illustrated 20 procedure 18 A15 midplane board illustrate...

Page 362: ...e 6 assembly list of procedures 4 sequence 3 battery procedure 58 display cable illustrated 13 14 procedure 12 fan illustrated 57 procedure 56 fan bracket illustrated 57 procedure 56 front panel assembly illustrated 9 procedure 8 front panel LED board illustrated 55 procedure 54 front panel subassemblies illustrated 11 procedures 10 inverter board illustrated 11 procedure 10 keypad assembly illust...

Page 363: ...nal group 3 operation 16 troubleshooting 39 40 single band failure 34 software options 12 solid state drive data storage 30 illustrated 18 operation 30 part number 16 removal and replacement procedure 50 source adjustment 42 calibration 42 functional group 3 group defined 31 operation 6 troubleshooting 34 match cause of failure 9 definition of 9 measurements affected by 9 maximum output power test...

Page 364: ...6 getting ready 4 interpreting results 27 performing 23 procedure 25 what it verifies 21 T test calibration coefficients 38 dynamic accuracy 39 frequency accuracy 34 noise floor 37 performance frequency accuracy 34 source maximum power output 32 source power accuracy 31 test port maximum power output 32 test port power accuracy 31 receiver compression 35 source power linearity 33 test port output ...

Page 365: ...ting 42 test port 4 receiver coupler illustrated 55 62 69 85 part number 54 61 68 75 84 removal and replacement illustrated 40 procedure 39 troubleshooting 41 test port 4 receiver step attenuator illustrated 84 85 part number 75 removal and replacement illustrated 47 procedure 45 troubleshooting 45 test port 4 source step attenuator illustrated 84 85 part number 75 removal and replacement illustra...

Page 366: ...5 26 5 GHz source 1 board 38 A8 26 5 GHz source 2 board 38 all traces 32 check the basics 6 fans 13 front panel 16 front panel keypad 16 front panel knob 16 front panel USB 16 GPIB CONTROLLER port 21 inverter board 14 LAN 22 measurement system 28 receiver group 43 running the receiver display 29 signal separation group 39 source group 34 traces A B C D R 29 where to begin 31 ping command 23 power ...

Page 367: ...tting ready 4 interpreting results 27 performing 23 procedure 25 what it verifies 21 VGA monitor 15 port rear panel connector 30 W warm up analyzer 5 warning 2 for servicing 5 warranty service one year return to Keysight 7 standard 7 wire harnesses in bottom assembly Option 200 illustrated 26 33 39 part numbers 25 32 38 in bottom assembly Option 219 illustrated 53 part numbers 52 in bottom assembl...

Page 368: ...This information is subject to change without notice Keysight Technologies 2011 2017 Edition 2 December 2017 www keysight com N5222 90001 ...

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