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Keysight N5227B, Service Manual

The Keysight N5227B is a high-performance network analyzer designed for precision measurements. Ensure optimal operation of your device with the Service Manual, available for free download from manualshive.com. This detailed manual provides step-by-step instructions for troubleshooting and maintenance, ensuring your equipment performs at its best.

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Keysight N5227B Service Guide                                                                                                     7-3

Repair and Replacement Procedures
Electrostatic Discharge (ESD) Protection

Electrostatic Discharge (ESD) Protection

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.
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 Discharge Protection” on 

page 1-7

, for all of the procedures in this chapter.

Summary of Contents for N5227B

Page 1: ...Service Guide Keysight 2 Port and 4 Port PNA Microwave Network Analyzers This manual provides documentation for the following models N5227B 10 MHz 67 GHz...

Page 2: ...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...

Page 3: ...ptions 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 6 Service and Support Options 2 6 Contacting K...

Page 4: ...eceiver Compression Test 3 35 Noise Floor Test 3 37 Calibration Coefficients Test 3 38 Dynamic Accuracy Test 3 39 Dynamic Accuracy at Low Frequency Available with LFE Option 205 220 420 425 3 40 DC Co...

Page 5: ...he CONTROLLER Port 4 22 LAN Troubleshooting 4 23 Measurement System Troubleshooting 4 29 Before you begin consider Where do you see a problem 4 29 Verifying the A B C D and R Traces Standard S Paramet...

Page 6: ...ttenuators and A71 74 Bias Tee Combiners Optional 5 36 Receiver Group Operation 5 37 A46 A49 35 dB Receiver Step Attenuators Optional 5 37 A37 Reference Mixer Switch 5 37 A27 and A28 Mixer Bricks 5 37...

Page 7: ...7 1 Chapter Seven at a Glance 7 1 Personal Safety Warnings 7 2 Electrostatic Discharge ESD Protection 7 3 Removal and Replacement Procedures 7 4 Removing the Covers 7 6 Removing and Replacing the Fro...

Page 8: ...ing and Replacing the Lithium Battery 7 72 Post Repair Procedures 7 74 8 General Purpose Maintenance Procedures Information in This Chapter 8 1 Chapter Eight at a Glance 8 1 Conventions Used for Hardk...

Page 9: ...t 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 po...

Page 10: ...d 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 co...

Page 11: ...is 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...

Page 12: ...be less than the maximum operating temperature of the instrument by 4 C for every 100 watts dissipated in the cabinet If the total power dissipated in the cabinet is greater than 800 watts then force...

Page 13: ...le parts inside Refer servicing to qualified personnel To prevent electrical shock do not remove covers Do not operate the analyzer with the outer cover removed for more than 30 minutes as this could...

Page 14: ...1 6 Keysight N5227B Service Guide Safety and Regulatory Information General Safety Considerations 1 Figure 1 1 Location of Calibration Stickers on PNA...

Page 15: ...ns always 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...

Page 16: ...1 8 Keysight N5227B Service Guide Safety and Regulatory Information Electrostatic Discharge Protection 1 Figure 1 2 ESD Protection Setup...

Page 17: ...pment 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 s...

Page 18: ...y on the A21 CPU board assembly refer to Removing and Replacing the Lithium Battery on page 7 72 The RCM mark is a registered trademark of the Australian Communications and Media Authority Indicates t...

Page 19: ...rades 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 Equipm...

Page 20: ...ectrical Maintenance Refer to Contacting Keysight on page 2 6 and to Chapter 3 Tests and Adjustments To prevent electrical shock disconnect the analyzer from the mains source before cleaning Use a dry...

Page 21: ...owave Network Analyzers Configuration Guide available online at http literature cdn keysight com litweb pdf 5992 1465EN pdf Pulse I O Adapter N1966A An adapter for connecting between the analyzer s re...

Page 22: ...r opera tion 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 Opti...

Page 23: ...wrench Thin profile 8710 0510 N A A R 5 16 inch open end torque wrench metric equivalent is 8 mm 1 1 and 2 4 N m 10 and 21 in lb settings for semi rigid cables N A N A T R 1 inch open end torque wren...

Page 24: ...ears R1282A 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 calibra...

Page 25: ...guration as it was originally shipped Reinstall front and rear impact covers Ship the analyzer using the original or comparable antistatic packaging materials Contact Keysight for instructions on wher...

Page 26: ...2 8 Keysight N5227B Service Guide General Product Information Keysight Support Services and Assistance 2...

Page 27: ...he 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 tab whose label is determine...

Page 28: ...ry 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 pe...

Page 29: ...IF Gain Adjustment Receiver Characterization Receiver Adjustment EE Default Adjustment IF Response Adjustment Available Only with Option S93093 4A B and or S93900 1 2 4 5 7A B Installed LFE Receiver A...

Page 30: ...ture 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...

Page 31: ...s 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 pla...

Page 32: ...ench 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...

Page 33: ...ons 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 s...

Page 34: ...ty test to pass Performance Tests Performance tests are used to confirm analyzer performance against the instrument specifications If confirmation is successful the PNA meets the instrument specificat...

Page 35: ...be traceable to recognized standards If you have a measurement application that does not use all of the measurement capabilities of the analyzer you may ask your local Keysight Technologies service of...

Page 36: ...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 ve...

Page 37: ...rification 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 conti...

Page 38: ...enuators calibration of the receivers frequency response of the receivers phase lock and leveling basic functional test of noise floor and trace noise Accessories Used in the Operator s Check Performi...

Page 39: ...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...

Page 40: ...cessories 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 necessar...

Page 41: ...S 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...

Page 42: ...er 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 t...

Page 43: ...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 clic...

Page 44: ...play 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...

Page 45: ...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 S...

Page 46: ...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...

Page 47: ...at 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 an...

Page 48: ...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 establis...

Page 49: ...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 ve...

Page 50: ...n this chapter that show the performance of good cables It is highly recommended that the test port cables be regularly tested For system verification to perform correctly it is NECESSARY that the ver...

Page 51: ...r ensure that the correct driver is loaded and the printer is defined as the default printer Refer to the embedded help in the analyzer for printer setup Let the analyzer warm up for at least 90 minut...

Page 52: ...of ports to be verified or to change the number of devices to measure click on the Configure tab and make the desired selections 6 Click Run 7 Follow the instructions on the analyzer for performing a...

Page 53: ...8 6 5 Refer to Figure 3 11 for additional troubleshooting steps Figure 3 11 System Verification Failure Flowchart Interpreting the Verification Results Figure 3 12 shows an example of typical verific...

Page 54: ...and Adjustments System Verification 3 Each S parameter measurement result is printed with frequency tested lower and upper limit lines the measured data and the result of the test Figure 3 12 Example...

Page 55: ...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...

Page 56: ...3 30 Keysight N5227B Service Guide Tests and Adjustments System Verification 3 Figure 3 13 Example of Printed Graphical Verification Results...

Page 57: ...st Frequency Accuracy Test Trace Noise Test Receiver Compression Test Noise Floor Test Calibration Coefficients Test Dynamic Accuracy Test Dynamic Accuracy at Low Frequency Available with LFE Option 2...

Page 58: ...Source Maximum Power Output Test Function of the Test To confirm the maximum source output power of your network analyzer over its full frequency range Specification Tested Test Port Output Maximum Le...

Page 59: ...t analyzers The receiver linearity is the standard against which the source linearity is checked 1 The analyzer is Preset 2 The analyzer is set up for a CW transmission measurement on the test port pa...

Page 60: ...acy is specified as the ratio parts per million ppm so this ratio is unaffected by the signal doubling Therefore only the frequency accuracy of the synthesizer board needs to be tested 1 The analyzer...

Page 61: ...nge The analyzer s trace statistics function is used to calculate the standard deviation of both the magnitude trace and the phase trace 5 These standard deviation values are reported as the analyzer...

Page 62: ...et input port A test cable is connected to 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 ran...

Page 63: ...is the source port when measuring the noise floor of Port 1 Port 1 is the source port when measuring the noise floor of Ports 2 3 and 4 1 The analyzer is Preset 2 The analyzer is set up for a CW tran...

Page 64: ...ecified at the test port without any cables so calibrations must be performed in both the forward and reverse directions to eliminate the effects of the test cable Specification Tested Uncorrected Sys...

Page 65: ...level of 20 dBm 2 A test cable is connected between the analyzer s source port and the dynamic accuracy test set s Source 1 In port A test cable is connected between the signal generator and the test...

Page 66: ...and Replacing the A27 and A28 Mixer Bricks on page 7 39 If the analyzer still fails this test replace the A12 SPAM board and repeat this test Refer to Removing and Replacing the A4 A17 Boards on page...

Page 67: ...20 420 425 on page 3 43 and to Removing and Replacing the A70 or A75 Low Frequency Extension LFE Board on page 7 56 Due to the complexity of the PNA family of analyzers the following notes apply to il...

Page 68: ...sion LFE Board on page 7 56 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...

Page 69: ...n the front panel 2 Connect the other test probe to the port 1 bias input BIAS 1 IN on the rear panel 3 Verify the DVM measures 10 4 Repeat these steps for each of the other test ports If the DVM valu...

Page 70: ...ble with Option 205 220 405 and 420 on page 3 52 These adjustments are described on the following pages Touchscreen Adjustment and Verification The touchscreen adjustment calibration is used to correc...

Page 71: ...hscreen Adjustment and Verification The touchscreen adjustment calibration is used to correct the touchscreen accuracy when you replace your front panel or your SSD Refer to Calibration Procedure The...

Page 72: ...4 Follow the instrument s display prompts Equipment Used for the 10 MHz Frequency Reference Adjustment Procedure 1 Connect the equipment as shown in Figure 3 15 Connect a GPIB cable between the netwo...

Page 73: ...the Source Adjustment Procedure 1 Connect the equipment as shown in Figure 3 16 Connect a GPIB cable between the network analyzer and the power meter System Service Adjustment Routines System Service...

Page 74: ...in 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 Receiv...

Page 75: ...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 new primary mxcalfile_pxx files from the backu...

Page 76: ...ween the network analyzer and the power meter Figure 3 17 Equipment Setup 1 for the Receiver Adjustment 2 Press UTILITY then then then click Receiver Adjustment 3 Ensure the GPIB settings are correct...

Page 77: ...onse Adjustment Available Only with Option S93093 4A B and or S93900 1 2 4 5 7A B Installed The IF Response adjustment is required when upgrading to Option 090 093 and or 094 In addition this adjustme...

Page 78: ...Receiver adjustment is required when upgrading to Option 205 or 425 In addition this adjustment must be performed each time a new configuration is set up or if cables are changed Procedure 1 Press UTI...

Page 79: ...ion 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 a...

Page 80: ...USB connector function properly page 4 15 Rear Panel Troubleshooting Problems associated with the rear panel interconnects The data found at these rear panel interconnects can be used to troubleshoot...

Page 81: ...electrostatic discharge can seriously damage your analyzer resulting in costly repair Do not operate the analyzer with the outer cover removed for more than 30 minutes as this could cause the analyzer...

Page 82: ...hese 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 Replac...

Page 83: ...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...

Page 84: ...leshooting Getting Started with Troubleshooting 4 Figure 4 1 Troubleshooting Organization Flowchart Go to Power Up Troubleshooting Go to Front Panel Troubleshooting Go to Rear Panel Troubleshooting Go...

Page 85: ...ystem 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 Trouble...

Page 86: ...g it is likely that the problem is a defective A20 power supply the A19 midplane board or another assembly that is loading down the A20 power supply Continue with If Any Supply Voltage Is Missing on p...

Page 87: ...afety 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...

Page 88: ...age or over current condition can be the A20 power supply itself or any assembly to which the A20 power supply provides voltage To isolate the cause continue to the assembly removal process as describ...

Page 89: ...sizer board refer to Removing and Replacing the A4 A17 Boards on page 7 17 8 Remove the A17 13 5 GHz synthesizer board refer to Removing and Replacing the A4 A17 Boards on page 7 17 9 Remove the A4 13...

Page 90: ...plies If the supplies are within specifications the most probable cause is a defective A18 system motherboard Refer to Removing and Replacing the A18 System Motherboard on page 7 19 If only one or two...

Page 91: ...spect a defective A18 system motherboard Refer to Removing and Replacing the A18 System Motherboard on page 7 19 Troubleshooting LCD Display Problems This procedure is intended to isolate the faulty a...

Page 92: ...able cause is the A21 CPU board Refer to Removing and Replacing the A21 CPU Board Assembly on page 7 26 3 If the external VGA monitor displays the correct information verify that the front panel inter...

Page 93: ...ubleshooting on page 4 7 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 18 Checking the A2 USB B...

Page 94: ...ad 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 9 If none of the keys...

Page 95: ...171 T p 242 k m 232 Display 238 Navigationa Keys Keypad Code 7 182 0 206 Setup 241 Knob CW 101 8 183 decimal point 207 RESPONSE Keys Keypad Code Know CCW 102 9 176 201 Meas 179 Click Rotary Knob press...

Page 96: ...board or the A1 front panel interface board To replace the RPG board refer to Removing the RPG Assembly on page 7 9 To replace the A1 front panel interface board refer to Removing the A1 Front Panel...

Page 97: ...ty of the total pixels have a constant blue green red or black appearance that will not change Three or more consecutive pixels and or any two faulty pixels within 15 mm of each other have a constant...

Page 98: ...the keypad to the A17 CPU board It routes display signals from the A17 CPU board to the A3 display assembly Checking the Speaker If no audio is heard Verify that the volume is set correctly and the pr...

Page 99: ...Keysight N5227B Service Guide 4 21 Troubleshooting Front Panel Troubleshooting Checking the Display To verify the display functionality refer to A3 Display Test on page 4 18...

Page 100: ...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 verifie...

Page 101: ...he 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 no...

Page 102: ...etwork 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 availa...

Page 103: ...ly from 141 121 69 162 bytes 32 time 10ms TTL 127 Reply from 141 121 69 162 bytes 32 time 10ms TTL 127 Ping statistics for 141 121 69 162 Packets Sent 4 Received 4 lost 0 0 loss Approximate round trip...

Page 104: ...short length of cable with an RJ 45 connector on each end Some network hubs have the capability to make a c rossover connection using two normal or straight through cables If this capability is not a...

Page 105: ...pin 1 on the other end of the cable c Connect the wire from pin 2 on one end of the cable to the wire from pin 6 on the other end of the cable d Connect the wire from pin 6 on one end of the cable to...

Page 106: ...4 28 Keysight N5227B Service Guide Troubleshooting Rear Panel Troubleshooting 4 Figure 4 6 Construction of a Crossover Cable...

Page 107: ...e 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 wil...

Page 108: ...eysight 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 7 If the information is incorrect for any...

Page 109: ...ed in four separate data windows as shown in Figure 4 8 Identifying discrepancies of the traces in these windows can help you to isolate the faulty assembly Figure 4 8 Typical 4 Receiver Display for 2...

Page 110: ...alyzer 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 6 If any of the...

Page 111: ...ixer switch A46 A47 A48 and A49 35 dB receiver step attenuators optional A27 and A28 mixer bricks A16 SPAM board A24 IF multiplexer board A23 test set motherboard Use the list on the following pages t...

Page 112: ...tories and verify the presence of the following file C WINNT system32 drivers spampnp sys 3 If you have verified that the DSP driver is present and enabled but all traces are still missing in all band...

Page 113: ...s across 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 Equipment Used...

Page 114: ...e end of this chapter and to Top Cables All Cables All Options on page 6 20 Locate the flexible cable W51 at the A15 LO synthesizer board 2 Disconnect W51 from J1207 3 Connect the spectrum analyzer to...

Page 115: ...4 MHz above the network analyzer setting 6 If the signal is not present but the signal from Checking the A15 13 5 GHz LO Synthesizer Output is present replace the A25 HMA 26 5 Refer to Removing and Re...

Page 116: ...measurement An 800 MHz signal should be present 5 Refer to the Note on page 4 29 If the observed problem was frequency banded rather than broadband related set the analyzer frequency to the center of...

Page 117: ...m at the end of this chapter and to Top Cables All Cables All Options on page 6 20 Locate cable W11 on the A7 doubler board cable W17 on the A8 doubler board cable W13 on the A12 doubler board and cab...

Page 118: ...e 4 29 If the PNA problem you are troubleshooting is frequency banded rather than broadband related set the PNA output frequency to the center of the problem band The spectrum analyzer should display...

Page 119: ...lug the power to the analyzer and disconnect all front and rear panel connections except installed jumpers 3 Remove the outer cover from the analyzer Refer to Removing the Covers on page 7 6 Use an an...

Page 120: ...a 10 second sweep Press STIMULUS then Set the time to 10 000 seconds in the Sweep Time box Checking Port 1 2 3 or 4 Power Outputs A B C or D Signals The object of this check is to verify the power of...

Page 121: ...page 6 70 4 Port Configuration Option 405 on page 6 77 4 Port Configuration Option 410 on page 6 86 4 Port Configuration Option 419 on page 6 93 4 Port Configuration Option 420 on page 6 105 Trace lo...

Page 122: ...cal switches continue testing at Checking the A50 A51 A52 and A53 Mechanical Switches on page 4 45 5 If the 800 MHz signal is not present and the analyzer does not have mechanical switches replace the...

Page 123: ...the A38 A41 Source Attenuators and the A46 A49 Receiver Attenuators on page 7 47 Checking the A50 A51 A52 and A53 Mechanical Switches 1 Locate the appropriate semirigid cable at the output of the mech...

Page 124: ...Option 419 on page 6 93 Bottom RF Cables Option 419 Ports 1 and 2 on page 6 96 Bottom RF Cables Option 419 Ports 3 and 4 on page 6 99 Bottom Assemblies Option 420 on page 6 105 Bottom RF Cables Option...

Page 125: ...1 W62 of A27 Receiver R2 W63 of A27 Receiver B W64 of A27 Receiver C W68 of A28 Receiver R3 W67 of A28 Receiver R4 W66 of A28 Receiver D W65 of A28 2 Disconnect the flexible cable at the suspect recei...

Page 126: ...OURCE OUT connector 2 If the measured signal is present replace the A27 mixer brick Refer to Removing and Replacing the A27 and A28 Mixer Bricks on page 7 39 3 If the measured signal is not present re...

Page 127: ...ate flexible RF cable from the output receiver to be tested on the A24 IF multiplexer board 3 Connect the spectrum analyzer to the open connector 4 Refer to the Note on page 4 29 The measured signal o...

Page 128: ...agrams LFE 4 Instrument Simplified Block Diagrams LFE1 2 Port N5290A System Block Diagram 201 and 205 Figure 4 11 System Block Diagram Legend Figure 4 12 2 Port N5290A System Simplified Block Diagram...

Page 129: ...ight N5227B Service Guide 4 51 Troubleshooting Instrument Simplified Block Diagrams LFE 2 Port N5290A System Block Diagram 202 and 205 Figure 4 13 2 Port N5290A System Simplified Block Diagram 202 and...

Page 130: ...4 52 Keysight N5227B Service Guide Troubleshooting Instrument Simplified Block Diagrams LFE 4 4 Port N5290A System Block Diagram 401 Figure 4 14 4 Port N5290A System Simplified Block Diagram 401...

Page 131: ...Keysight N5227B Service Guide 4 53 Troubleshooting Instrument Simplified Block Diagrams LFE Figure 4 15 4 Port N5290A System Simplified Block Diagram 402...

Page 132: ...4 54 Keysight N5227B Service Guide Troubleshooting Instrument Simplified Block Diagrams LFE 4 Figure 4 16 4 Port N5290A System Simplified Block Diagram 403...

Page 133: ...Keysight N5227B Service Guide 4 55 Troubleshooting Instrument Block Diagrams Sheet 1 Instrument Block Diagrams Sheet 1 Microwave PNA N5227B...

Page 134: ...W34 TO A27 A W34 W135 W60 RCVR B IN CPLR ARM W50 0 50 dB A49 STEP ATTEN W123 TO A27 B W46 TO A27 B W46 W138 W130 FROM A36 FROM A36 W60 RCVR R1 IN SOURCE OUT REF 1 W127 W53 W33 FROM A33 FROM A33 TO A2...

Page 135: ...Keysight N5227B Service Guide 4 57 Troubleshooting Instrument Block Diagrams Sheet 2 Instrument Block Diagrams Sheet 2 Microwave PNA N5227B...

Page 136: ...to 0 175 0 053 to 0 175 4 1 0 18244 to 0 25744 0 18244 to 0 25744 0 175 to 0 250 0 175 to 0 250 0 175 to 0 250 0 175 to 0 250 5 1 0 25744 to 0 50744 0 25744 to 0 50744 0 250 to 0 500 0 250 to 0 500 0...

Page 137: ...available 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...

Page 138: ...iver 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 re...

Page 139: ...Keysight N5227B Service Guide 5 3 Theory of Operation Network Analyzer System Operation Figure 5 2 2 Port System Simplified Block Diagram...

Page 140: ...ght N5227B Service Guide Theory of Operation Network Analyzer System Operation 5 Figure 5 3 System Block Diagram Legend LFE Block Diagrams Figure 5 4 4 Port N5290A System Simplified Block Diagram 401...

Page 141: ...zer can be 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...

Page 142: ...synthesizer board there is a LFE output that is limited by the C R filter and by the 250 MHz low pass filter Below 20 MHz the LFE is signal is directly converted Exceptions are shown in Figure 5 14 on...

Page 143: ...processing group Refer to Receiver Group Operation on page 5 37 Digital Processor and Digital Control Group The digital processor and digital control group are divided into a front panel group and a...

Page 144: ...d including rear panel interconnects A70 4 Port and A75 2 Port Low Frequency Extension LFE Board including rear panel interconnects Basic Operation Table 5 1 on page 5 11 lists the L O harmonic number...

Page 145: ...bricks A D and R1 R4 where they are mixed with the LO signal from the A26 splitter to produce the 7 438 MHz or 0 826 MHz IF signal The A4 A15 and A17 13 5 GHz synthesizer boards each contain their ow...

Page 146: ...5 10 Keysight N5227B Service Guide Theory of Operation Synthesized Source Group Operation 5 Figure 5 7 Source Group Part 2...

Page 147: ...0 04054 to 0 05554 0 038 to 0 053 0 038 to 0 053 0 038 to 0 053 0 038 to 0 053 7 1 0 06061 to 0 08261 0 06061 to 0 08261 0 053 to 0 075 0 053 to 0 075 0 053 to 0 075 0 053 to 0 075 8 1 0 08261 to 0 1...

Page 148: ...752 to 8 000 6 752 to 8 000 24 1 8 00761 to 8 50761 8 00761 to 8 50761 8 000 to 8 500 8 000 to 8 500 8 000 to 8 500 8 000 to 8 500 25 1 8 50761 to 10 67161 8 50761 to 10 67161 8 500 to 10 664 8 500 t...

Page 149: ...3359 8 000 to 10 000 16 000 to 20 000 32 000 to 40 000 32 000 to 40 000 39 3 13 3359 to 13 5025 13 3359 to 13 50254 10 000 to 10 125 10 250 to 10 125 20 000 to 20 250 40 000 to 40 500 40 3 6 7513 to 7...

Page 150: ...hesizer board while other bands are passed through another doubler circuit then to the output of the synthesizer board to produce the output frequencies listed in Table 5 1 The output of the A15 13 5...

Page 151: ...s of the A7 A8 A12 and A13 50 GHz doubler boards receive their signals from the A5 and A10 source module OUT 1 and OUT 2 outputs These signals are passed through to the doubler board output unchanged...

Page 152: ...bricks as the LO signal A14 Frequency Reference Board This assembly provides stable reference frequencies to the rest of the instrument A high stability 10 MHz oven controlled crystal oscillator OCXO...

Page 153: ...chained on the bus at one time The Test Set I O is not compatible with 8753 network analyzer test sets HANDLER I O A rectangular 36 pin female connector providing four independent parallel input outp...

Page 154: ...O address and latched data 22 23 AD0 1 TTL I O address and latched data 24 LDS TTL out active low data strobe 1 s min 25 RLW TTL out high read low write Table 5 3 HANDLER I O Connector Pin Assignment...

Page 155: ...weep End TTL out active low 10 s min indicates sweep done 36 Pass Fail Write Strobe TTL out active low pass fail write strobe 1 s min Table 5 4 PWR I O Connector Pin Assignments DB 9 Female Connector...

Page 156: ...uency bandwidth at the low end down to 900 Hz And the high end of the LFE board is 100 MHz Between 10 MHz and 100 MHz either LFE or non LFE mode can be used The inputs and outputs connectors of the LF...

Page 157: ...of the A24 IF MUX board A B R1 R2 PNA 4 ports The inputs are LFE output of the LO board J102 connected to LFE board J18 LFE output of the Synthesizer 1 board J102 connected to LFE board J20 LFE output...

Page 158: ...5 22 Keysight N5227B Service Guide Theory of Operation Synthesized Source Group Operation 5 Figure 5 8 Block Diagram with Synthesizer Board and LFE Board Bias combiner Synthesizer...

Page 159: ...ght N5227B Service Guide 5 23 Theory of Operation Synthesized Source Group Operation Figure 5 9 2 Port with LFE Figure 5 10 4 Port with LFE Bias combiners Synthesizer Bias combiners Synthesizer Synthe...

Page 160: ...24 Keysight N5227B Service Guide Theory of Operation Synthesized Source Group Operation 5 Figure 5 11 2 Port LFE with IF MUX Board Figure 5 12 4 Port LFE with IF MUX Board Bias combiners Bias combiner...

Page 161: ...4 1048576 4194304 0 00048 to 0 00095 0 00095 to 0 00191 2 000 to 4 000 4 524288 2097152 0 00095 to 0 00191 0 00191 to 0 00381 2 000 to 4 000 4 262144 1048576 0 00191 to 0 00381 0 00381 to 0 00763 2 0...

Page 162: ...9000 2 000 to 4 000 4 64 256 7 81250 to 15 62500 3 9 9000 to 10 01000 2 000 to 4 000 4 64 256 7 81250 to 15 62500 4 10 01000 to 19 99000 2 000 to 4 000 4 64 256 7 81250 to 15 62500 5 1 99000 to 31 250...

Page 163: ...Some of the LFE options are not available on all models Band A11 LO Synthesizer VCO IF Mode DIV N Synth RF Path Synth RF Output 0 1 2 000 to 4 000 IF2 4 DDS_CLK LFE 2 000 to 4 000 4 DDS_CLK LFE 2 000...

Page 164: ...requency With LFE mode we use dedicated mixers which are the LFE board These mixers downconvert the RF signals in LFE mode and create dedicated IF signals These IF signals are then sent to the IF Mux...

Page 165: ...has an influence on which power line can used to generate the voltages needed The A70 LFE board 4 port and A75 2 port works with the A70 A74 bias combiners The design of this combiner has an impact on...

Page 166: ...5 30 Keysight N5227B Service Guide Theory of Operation Synthesized Source Group Operation 5 Figure 5 14 Frequency Bands with LFE...

Page 167: ...A45 60 dB Source Step Attenuators and A71 74 Bias Tee Combiners Optional Configurable Test Set The configurable test set is included in the standard analyzer and allows you to measure devices with hig...

Page 168: ...y 15 dB In the forward direction for example the signal flow through the test port 2 coupler A36 is reversed by arranging the front panel jumpers such that RCVR B IN connects to CPLR THRU and CPLR ARM...

Page 169: ...eory of Operation Signal Separation Group Operation 2 port models The coupling coefficient of the directional couplers is nominally 15 dB for all frequencies above 500 MHz The coupling coefficient inc...

Page 170: ...5 34 Keysight N5227B Service Guide Theory of Operation Signal Separation Group Operation 5 Figure 5 15 4 Port Signal Separation Group...

Page 171: ...Keysight N5227B Service Guide 5 35 Theory of Operation Signal Separation Group Operation Figure 5 16 2 Port Signal Separation Group...

Page 172: ...vide DC biasing for the DUT A42 A45 60 dB Source Step Attenuators and A71 74 Bias Tee Combiners Optional On 4 port models with Option 405 420 or 425 a step attenuator and a bias tee are placed in the...

Page 173: ...attenuation in 5 dB steps These attenuators are controlled by the A21 CPU board A37 Reference Mixer Switch The A37 reference mixer switch is placed in the R1 reference signal path allowing this refer...

Page 174: ...rear panel connectors 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 a single reference signal...

Page 175: ...l 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...

Page 176: ...5 40 Keysight N5227B Service Guide Theory of Operation Receiver Group Operation 5 Figure 5 17 4 Port Receiver Group...

Page 177: ...Keysight N5227B Service Guide 5 41 Theory of Operation Receiver Group Operation Figure 5 18 2 Port Receiver Group...

Page 178: ...lay 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 19 on page...

Page 179: ...Keysight N5227B Service Guide 5 43 Theory of Operation Digital Processing and Digital Control Group Operation Figure 5 19 Digital Processing and Digital Control Group...

Page 180: ...system motherboard The A1 front panel interface board also includes a speaker that emits the audio signals received from the A21 CPU board A2 USB Board This board provides four universal serial bus US...

Page 181: ...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 A21 CPU board A21 C...

Page 182: ...SSD The SSD is a Serial Advanced Technology Attachment SATA data storage device which is connected directly to and physically mounted within the enclosure of the A21 CPU board The full operating syst...

Page 183: ...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...

Page 184: ...5 48 Keysight N5227B Service Guide Theory of Operation Power Supply Group Operation 5...

Page 185: ...ow 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 defini...

Page 186: ...ologies for instructions on where to send the order Refer to Contacting Keysight on page 2 6 To order a part that is not listed in the replaceable parts lists include the instrument model number and c...

Page 187: ...hat identifies 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 a...

Page 188: ...d 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 defectiv...

Page 189: ...Keysight N5227B Service Guide 6 5 Replaceable Parts Rebuilt Exchange Assemblies Figure 6 1 Module Exchange Procedure...

Page 190: ...Location A1 Front panel interface board Front Panel Assembly Back Side All Options on page 6 14 A2 USB board A3 Display assembly A4 13 5 GHz source 1 synthesizer board Top Assemblies and Cables All Op...

Page 191: ...pler A35 Port 4 receiver coupler A36 Port 2 receiver coupler A37 Port 1 test port coupler A38 Port 3 test port coupler A39 Port 4 test port coupler A40 Port 2 test port coupler A41 Reference mixer swi...

Page 192: ...er 4 A59 70 GHz doubler 2 A64 Test port 1 6 dB attenuator A65 Test port 3 6 dB attenuator A66 Test port 4 6 dB attenuator A67 Test port 2 6 dB attenuator A68 REF 1 RCVR R1 IN 3 dB attenuator A69 REF 4...

Page 193: ...ort Configuration Option 210 on page 6 43 2 Port Configuration Option 219 on page 6 49 2 Port Configuration Option 220 on page 6 56 4 Port Configuration Option 400 on page 6 63 4 Port Configuration Op...

Page 194: ...cumentation on page 6 131 GPIB Cables GPIB Adapter on page 6 131 Fuses on page 6 131 Battery on page 6 131 Protective Guards for Front Panel Jumpers on page 6 131 USB Accessories on page 6 132 ESD Sup...

Page 195: ...t Option 201and Option 219 N5227 80030 Lower front panel overlay 2 port Option 205 and Option 220 N5227 80025 Lower front panel overlay 2 port Option 210 N5227 80024 Lower front panel overlay 4 port O...

Page 196: ...own N5242 00048 2 Guard jumper cables side 2 Port 4 Port Not Shown N5242 00049 1 Guard jumper cables center 4 Port Not shown 5023 3074 2 Front handle a Some options require 14 of the 0515 1946 screws...

Page 197: ...Keysight N5227B Service Guide 6 13 Replaceable Parts Replaceable Parts Listings Figure 6 2 Front Panel Assembly Front Side All Options...

Page 198: ...0 0016 1 Washer RPG secure to attach RPG board N5240 60083 1 RPG board 2090 1092 1 Touch display LCD 12 1 inch N5242 00045 LCD 1 LCD Mounting plate W1312 40016 1 Foam mount speaker to attach speaker a...

Page 199: ...cket In Figure 6 5 on page 6 16 only one bracket is shown 8121 2173 1 LCD Cable assembly 30 AWG 300V 12 pin plug to 8 pin plug E5071 61653 1 LCD display cable N5240 60073 1 Touch screen controller boa...

Page 200: ...N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 4 A3 Display Assembly with Interface Board USB Assemblies Figure 6 5 A3 Display Assembly with LCD Display 2090 1092 LED and...

Page 201: ...13 5 GHz LO synthesizer board A16 N5240 60077 Was N5240 60056 1 Signal Processing ADC Module SPAM board A17 N5240 60074 Was N5242 60150 1 13 5 GHz source 2 synthesizer board On 2 port models this asse...

Page 202: ...yzer In the window displayed find System CPU Version d For more information on the N8985A SSD refer to the Windows 10 Operating System Upgrade Kit Installation Note available online at http literature...

Page 203: ...Keysight N5227B Service Guide 6 19 Replaceable Parts Replaceable Parts Listings Figure 6 6 Top Assemblies All Options...

Page 204: ...12 W13 SR N5247 20086 1 A7 port 1 40 GHz doubler P2 to W14 W15 SR N5247 20114 1 A12 port 3 40 GHz doubler P6 to W16 W17 SR N5247 20086 1 A12 port 3 doubler P2 to W18 W19 SR N5247 20114 1 A13 port 4 40...

Page 205: ...500 W95 F N5247 60012 1 A62 port 4 70 GHz doubler J2 to A13 40 GHz doubler J401 W96 F N5247 60013 1 A62 port 4 70 GHz doubler J4 to A13 40 GHz doubler J500 W97 F N5247 60008 1 A63 port 2 70 GHz double...

Page 206: ...6 22 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 7 Top Cables All Cables All Options...

Page 207: ...2 70 GHz doubler A68 08490 60037 1 3 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 pag...

Page 208: ...6 24 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 8 Bottom Assemblies Standard 2 Port Configuration Option 200...

Page 209: ...r panel EXT TSET DRIVE RF OUT J6 W69 SR N5247 20112 1 A27 mix brick to rear panel EXT TSET DRIVE LO OUT J5 W71 F N5242 60017 1 A27 mixer brick A to A24 IF multiplexer P1 W72 F N5242 60025 1 A27 mixer...

Page 210: ...6 26 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 9 Bottom RF Cables Standard 2 Port Configuration Option 200...

Page 211: ...4 3W N5247 60016 A23 test set motherboard J222 to ports 2 LED board J1 30R N5247 60018 A63 port 2 70 GHz doubler J1 to A23 test set motherboard J6 24R N5247 60022 A23 test set motherboard J209 to A25...

Page 212: ...6 28 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 10 Bottom Ribbon Cables and Wire Harnesses Standard 2 Port Configuration Option 200...

Page 213: ...70 GHz doubler Port 2 70 GHz doubler 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 n...

Page 214: ...6 30 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 11 Bottom Assemblies Option 201...

Page 215: ...PLR THRU to A36 port 2 coupler W45 SR N5247 20057 1 A32 port 2 receiver coupler to front panel REF 2 SOURCE OUT W46 SR N5247 20041 1 A36 port 2 coupler to front panel port 2 CPLR ARM W47 SR N5247 2005...

Page 216: ...Replaceable Parts Replaceable Parts Listings 6 W79 83 W91 92 W97 98 F Refer to Top Cables All Cables All Options on page 6 20 a SR semirigid coaxial cable F flexible coaxial cable Reference Designator...

Page 217: ...Keysight N5227B Service Guide 6 33 Replaceable Parts Replaceable Parts Listings Figure 6 12 Bottom RF Cables Option 201...

Page 218: ...J1 to A23 test set motherboard J4 3W N5247 60016 A23 test set motherboard J222 to ports 2 LED board J1 30R N5247 60018 A63 port 2 70 GHz doubler J1 to A23 test set motherboard J6 24R N5247 60022 A23 t...

Page 219: ...Keysight N5227B Service Guide 6 35 Replaceable Parts Replaceable Parts Listings Figure 6 13 Bottom Ribbon Cables and Wire Harnesses Option 201...

Page 220: ...0005 1 LFE PC board 2 port A71 A74 5087 7403 2 Port 1 bias combiner Port 2 bias combiner N5240 60058 2 Front panel LED board a Part numbers in italic typeface are for rebuilt exchange assemblies Refer...

Page 221: ...Keysight N5227B Service Guide 6 37 Replaceable Parts Replaceable Parts Listings Figure 6 14 Bottom Assemblies Option 205...

Page 222: ...2 SOURCE OUT W46 SR N5247 20041 1 A36 port 2 coupler to front panel port 2 CPLR ARM W47 SR N5247 20053 1 Port 1 RCVR A IN to A27 mixer brick A W50 SR N5247 20054 1 Front panel port 2 RCVR B IN to A27...

Page 223: ...bles All Cables All Options on page 6 20 W194 F N5240 60097 2 Cable assembly coaxial LFE Port 1 bias combiner RF IN to Port1 A70 LFE board W197 Cable assembly coaxial LFE Port 2 bias combiner RF IN to...

Page 224: ...6 40 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 15 Bottom RF Cables Option 205...

Page 225: ...247 60018 A63 port 2 70 GHz doubler J1 to A23 test set motherboard J6 24R N5247 60022 A23 test set motherboard J209 to A25 HMA26 5 J1 100R N5240 60089 Cable ribbon assembly MB IFMUX LFE SMB A14 system...

Page 226: ...6 42 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 16 Bottom Ribbon Cables and Wire Harnesses Option 205...

Page 227: ...8 2 Test port 1 6 dB attenuator Test port 2 6 dB attenuator A68 08490 60037 1 3 dB attenuator N5240 60058 2 Front panel LED board a Part numbers in italic typeface are for rebuilt exchange assemblies...

Page 228: ...6 44 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 17 Bottom Assemblies Option 210...

Page 229: ...T DRIVE RF OUT J6 W69 SR N5247 20112 1 A27 mix brick to rear panel EXT TSET DRIVE LO OUT J5 W71 F N5242 60017 1 A27 mixer brick A to A24 IF multiplexer P1 W72 F N5242 60025 1 A27 mixer brick R1 to A24...

Page 230: ...6 46 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 18 Bottom RF Cables Option 210...

Page 231: ...N5247 60016 A23 test set motherboard J222 to ports 2 LED board J1 30R N5247 60018 A63 port 2 70 GHz doubler J1 to A23 test set motherboard J6 24R N5247 60022 A23 test set motherboard J209 to A25 HMA2...

Page 232: ...6 48 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 19 Bottom Ribbon Cables and Wire Harnesses Option 210...

Page 233: ...ias tee A46 A49 84905 60004 Was 84905 60002 2 Port 1 receiver attenuator Port 2 receiver attenuator A60 A63 5087 7336 2 Port 1 70 GHz doubler Port 2 70 GHz doubler N5240 60058 2 Front panel LED board...

Page 234: ...6 50 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 20 Bottom Assemblies Option 219...

Page 235: ...1 REF 1 RCVR R1 IN to A37 reference mixer switch W53 SR N5247 20048 1 A37 reference mixer switch to A27 mixer brick R1 W56 SR N5247 20045 1 A27 mixer brick R2 to front panel REF 2 RCVR R2 IN W60 SR N...

Page 236: ...o A45 port 2 bias tee W116 SR N5247 20042 1 A36 port 2 coupler to A45 port 2 bias tee W117 SR N5247 20013 1 Front panel port 1 RCVR A IN to A46 port 1 receiver attenuator W118 SR N5247 20047 1 A46 por...

Page 237: ...Keysight N5227B Service Guide 6 53 Replaceable Parts Replaceable Parts Listings Figure 6 21 Bottom RF Cables Option 219...

Page 238: ...541 to A42 port 1 bias tee 3W N5247 60016 A23 test set motherboard J222 to port 2 LED board J1 2W N5247 60021 A23 test set motherboard J542 to A45 port 2 bias tee 16R N5245 60006 A23 test set motherbo...

Page 239: ...Keysight N5227B Service Guide 6 55 Replaceable Parts Replaceable Parts Listings Figure 6 22 Bottom Ribbon Cables and Wire Harnesses Option 219...

Page 240: ...receiver attenuator A60 A63 5087 7336 2 Port 1 70 GHz doubler Port 2 70 GHz doubler A75 N5291 60005 1 LFE PC board 2 port A71 A74 5087 7403 2 Port 1 bias combiner Port 2 bias combiner N5240 60058 2 Fr...

Page 241: ...Keysight N5227B Service Guide 6 57 Replaceable Parts Replaceable Parts Listings Figure 6 23 Bottom Assemblies Option 220...

Page 242: ...R1 IN to A37 reference mixer switch W53 SR N5247 20048 1 A37 reference mixer switch to A27 mixer brick R1 W56 SR N5247 20045 1 A27 mixer brick R2 to front panel REF 2 RCVR R2 IN W60 SR N5247 20107 6...

Page 243: ...HRU to A71 port 1 bias T combiner W187 SR N5247 20163 1 Cable assembly RF Front panel CPLR THRU to A74 port 2 bias T combiner W191 W193 F Refer to Top Cables All Cables All Options on page 6 20 W194 F...

Page 244: ...6 60 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 24 Bottom RF Cables Option 220...

Page 245: ...N5247 60016 A23 test set motherboard J222 to port 2 LED board J1 2W N5240 60091 P O Bias Combiner A23 test set motherboard J544 to A74 port 2 bias tee combiner 16R N5245 60006 A23 test set motherboard...

Page 246: ...6 62 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 25 Bottom Ribbon Cables and Wire Harnesses Option 220...

Page 247: ...er A60 A61 A62 A63 5087 7336 4 Port 1 70 GHz doubler Port 3 70 GHz doubler Port 4 70 GHz doubler Port 2 70 GHz doubler A68 A69 08490 60037 2 3 dB attenuator N5240 60058 2 Front panel LED board a Part...

Page 248: ...6 64 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 26 Bottom Assemblies Standard 4 Port Configuration Option 400...

Page 249: ...ler W30 SR N5227 20045 1 A63 port 2 70 GHz doubler to A32 port 2 receiver coupler W58 N5247 20138 1 2 4 mm cap for A28 mixer brick W61 SR Refer to Top Cables All Cables All Options on page 6 20 W62 SR...

Page 250: ...mixer brick R2 W131 SR N5227 20015 1 A29 port 1 receiver coupler to A33 port 1 coupler W132 SR N5227 20016 1 A30 port 3 receiver coupler to A34 port 3 coupler W133 SR N5227 20017 1 A31 port 4 receiver...

Page 251: ...Keysight N5227B Service Guide 6 67 Replaceable Parts Replaceable Parts Listings Figure 6 27 Bottom RF Cables Standard 4 Port Configuration Option 400...

Page 252: ...set motherboard J222 to ports 2 4 LED board J1 30R N5247 60018 A63 port 2 70 GHz doubler J1 to A23 test set motherboard J6 24R N5247 60022 A23 test set motherboard J209 to A25 HMA26 5 J1 30R N5247 600...

Page 253: ...Keysight N5227B Service Guide 6 69 Replaceable Parts Replaceable Parts Listings Figure 6 28 Bottom Ribbon Cables and Wire Harnesses Standard 4 Port Configuration Option 400...

Page 254: ...xer switch A60 A61 A62 A63 5087 7336 4 Port 1 70 GHz doubler Port 3 70 GHz doubler Port 4 70 GHz doubler Port 2 70 GHz doubler A69 08490 60037 1 3 dB attenuator N5240 60058 2 Front panel LED board a P...

Page 255: ...Keysight N5227B Service Guide 6 71 Replaceable Parts Replaceable Parts Listings Figure 6 29 Bottom Assemblies Option 401...

Page 256: ...l port 1 SOURCE OUT W32 SR N5247 20016 1 Port 1 CPLR THRU to A33 port 1 coupler W33 SR N5247 20078 1 A29 port 1 receiver coupler to A37 reference mixer switch W34 SR N5247 20082 1 A33 port 1 coupler t...

Page 257: ...111 1 A25 HMA26 5 to A26 splitter W63 SR N5245 20023 1 A26 splitter to A27 mixer brick W64 SR N5245 20022 1 A26 splitter to A28 mixer brick W66 SR N5247 20109 1 W65 to rear panel EXT TSET DRIVE RF OUT...

Page 258: ...6 74 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 30 Bottom RF Cables Option 401...

Page 259: ...247 60016 A23 test set motherboard J222 to ports 2 4 LED board J1 30R N5247 60018 A63 port 2 70 GHz doubler J1 to A23 test set motherboard J6 24R N5247 60022 A23 test set motherboard J209 to A25 HMA26...

Page 260: ...6 76 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 31 Bottom Ribbon Cables and Wire Harnesses Option 401...

Page 261: ...upler A37 5087 7759 1 Reference mixer switch A60 A61 A62 A63 5087 7336 4 Port 1 70 GHz doubler Port 3 70 GHz doubler Port 4 70 GHz doubler Port 2 70 GHz doubler A69 08490 60037 1 3 dB attenuator A70 N...

Page 262: ...w units built after August 2009 no longer use the N5242 60031 cable that was attached to connector P1001 and Source 2 As a result of this change the IF multiplexer boards have had their P1001 connecto...

Page 263: ...Keysight N5227B Service Guide 6 79 Replaceable Parts Replaceable Parts Listings Figure 6 32 Bottom Assemblies Option 405...

Page 264: ...SOURCE OUT W33 SR N5247 20078 1 A29 port 1 receiver coupler to A37 reference mixer switch W34 SR N5247 20082 1 A33 port 1 coupler to front panel port 1 CPLR ARM W35 SR N5247 20023 1 A30 port 3 receiv...

Page 265: ...EXT TSET DRIVE LO OUT J5 W71 F N5242 60017 1 A27 mixer brick A to A24 IF multiplexer P1 W72 F N5242 60021 1 A27 mixer brick R1 to A24 IF multiplexer P411 W73 F N5242 60022 1 A27 mixer brick R2 to A24...

Page 266: ...on page 6 20 W194 SR N5240 60097 4 Cable assembly coaxial LFE Port 1 bias combiner RF IN to Port1 A70 LFE board W195 SR Cable assembly coaxial LFE Port 3 bias combiner RF IN to Port3 A70 LFE board W19...

Page 267: ...Keysight N5227B Service Guide 6 83 Replaceable Parts Replaceable Parts Listings Figure 6 33 Bottom RF Cables Option 405...

Page 268: ...22 A23 test set motherboard J209 to A25 HMA26 5 J1 30R N5247 60018 A62 port 4 70 GHz doubler J1 to A23 test set motherboard J3 100R N5240 60089 Cable ribbon assembly MB IFMUX LFE SMB A14 system mother...

Page 269: ...Keysight N5227B Service Guide 6 85 Replaceable Parts Replaceable Parts Listings Figure 6 34 Bottom Ribbon Cables and Wire Harnesses Option 405...

Page 270: ...z doubler Port 4 70 GHz doubler Port 2 70 GHz doubler A64 A65 A66 A67 08490 60038 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 A68...

Page 271: ...Keysight N5227B Service Guide 6 87 Replaceable Parts Replaceable Parts Listings Figure 6 35 Bottom Assemblies Option 410...

Page 272: ...27 20045 1 A63 port 2 70 GHz doubler to A32 port 2 receiver coupler W58 N5247 20138 1 2 4 mm cap for A28 mixer brick W61 SR Refer to Top Cables All Cables All Options on page 6 20 W62 SR N5247 20111 1...

Page 273: ...7 20011 1 A33 port 1 coupler to A27 mixer brick A W136 SR N5227 20014 1 A34 port 3 coupler to A28 mixer brick C W137 SR N5227 20013 1 A35 port 4 coupler to A28 mixer brick D W138 SR N5227 20012 1 A36...

Page 274: ...6 90 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 36 Bottom RF Cables Option 410...

Page 275: ...J222 to ports 2 4 LED board J1 30R N5247 60018 A63 port 2 70 GHz doubler J1 to A23 test set motherboard J6 24R N5247 60022 A23 test set motherboard J209 to A25 HMA26 5 J1 30R N5247 60018 A62 port 4 70...

Page 276: ...6 92 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 37 Bottom Ribbon Cables and Wire Harnesses Option 410...

Page 277: ...A34 A35 A36 5087 7778 4 Test port 1 coupler Test port 3 coupler Test port 4 coupler Test port 2 coupler A37 5087 7759 1 Reference mixer switch A38 A39 A40 A41 84905 60004 Was 84905 60002 4 Test port 1...

Page 278: ...connector P1001 and Source 2 As a result of this change the IF multiplexer boards have had their P1001 connectors removed If your instrument contains a N5242 60031 cable remove it from your instrument...

Page 279: ...Keysight N5227B Service Guide 6 95 Replaceable Parts Replaceable Parts Listings Figure 6 38 Bottom Assemblies Option 419...

Page 280: ...7 20048 1 A37 reference mixer switch to A27 mixer brick R1 W60 SR N5247 20107 12 Front panel jumper W61 SR Refer to Top Cables All Cables All Options on page 6 20 W62 SR N5247 20111 1 A25 HMA26 5 to A...

Page 281: ...port 1 RCVR A IN to A46 port 1 receiver attenuator W118 SR N5247 20047 1 A46 port 1 receiver attenuator to A27 mixer brick A W123 SR N5247 20020 1 Port 2 RCVR B IN to A49 port 2 receiver attenuator W...

Page 282: ...6 98 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 39 Bottom RF Cables Option 419 Ports 1 and 2...

Page 283: ...EF 4 RCVR R4 IN to A69 A69 3 dB pad on A28 mixer brick R4 W58 N5247 20138 1 2 4 mm cap for A28 mixer brick W64 SR N5245 20022 1 A26 splitter to A28 mixer brick W68 SR N5247 20088 1 Rear panel port RF2...

Page 284: ...r attenuator W120 SR N5247 20064 1 A47 port 3 receiver attenuator to A28 mixer brick C W121 SR N5247 20024 1 Port 4 RCVR D IN to A48 port 4 receiver attenuator W122 SR N5247 20065 1 A48 port 4 receive...

Page 285: ...Keysight N5227B Service Guide 6 101 Replaceable Parts Replaceable Parts Listings Figure 6 40 Bottom RF Cables Option 419 Ports 3 and 4...

Page 286: ...est set motherboard J543 to A43 port 3 bias tee 2W N5247 60021 A23 test set motherboard J544 to A44 port 4 bias tee 3W N5247 60016 A23 test set motherboard J222 to ports 2 4 LED board J1 2W N5247 6002...

Page 287: ...Replaceable Parts Replaceable Parts Listings 20R N5247 60015 A23 test set motherboard J552 to A28 mixer brick 2 J52 a nR n wires in a ribbon flat cable nW n wires in a wire harness Reference Designat...

Page 288: ...6 104 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 41 Bottom Ribbon Cables and Wire Harnesses Option 419...

Page 289: ...pler Test port 3 coupler Test port 4 coupler Test port 2 coupler A37 5087 7759 1 Reference mixer switch A38 A39 A40 A41 84905 60004 Was 84905 60002 4 Test port 1 source attenuator Test port 3 source a...

Page 290: ...or P1001 and Source 2 As a result of this change the IF multiplexer boards have had their P1001 connectors removed If your instrument contains a N5242 60031 cable remove it from your instrument c All...

Page 291: ...Keysight N5227B Service Guide 6 107 Replaceable Parts Replaceable Parts Listings Figure 6 42 Bottom Assemblies Option 420...

Page 292: ...048 1 A37 reference mixer switch to A27 mixer brick R1 W60 SR N5247 20107 12 Front panel jumper W61 SR Refer to Top Cables All Cables All Options on page 6 20 W62 SR N5247 20111 1 A25 HMA26 5 to A26 s...

Page 293: ...ence mixer switch W145 SR N5247 20066 1 REF 2 RCVR R2 IN to A27 mixer brick R2 W181 SR N5247 20167 1 Cable assy RF CPLR THRU Bias T combiner Port 1 W182 SR N5247 20162 1 Cable assy RF Bias T combiner...

Page 294: ...6 110 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 43 Bottom RF Cables Option 420 Ports 1 and 2...

Page 295: ...8 mixer brick W64 SR N5245 20022 1 A26 splitter to A28 mixer brick W68 SR N5247 20088 1 Rear panel port RF2 OUT J12 to W67 W75 F N5242 60024 1 A28 mixer brick D to A24 IF multiplexer P801 W76 F N5242...

Page 296: ...R THRU A73 Bias T combiner Port 4 W186 SR N5247 20171 1 Cable assy RF A73 Bias T combiner FP coupler Port 4 W195 F N5240 60097 2 Cable assembly coaxial LFE Port 3 bias combiner RF IN to Port3 A70 LFE...

Page 297: ...Keysight N5227B Service Guide 6 113 Replaceable Parts Replaceable Parts Listings Figure 6 44 Bottom RF Cables Option 420 Ports 3 and 4...

Page 298: ...to A71 port 1 bias tee combiner A19 test set motherboard J543 to A72 port 3 bias tee combiner A19 test set motherboard J544 to A73 port 4 bias tee combiner 3W N5247 60016 A23 test set motherboard J22...

Page 299: ...DLER I O to A23 test set motherboard J400 20R N5247 60014 A23 test set motherboard J551 to A27 mixer brick 1 J52 20R N5247 60015 A23 test set motherboard J552 to A28 mixer brick 2 J52 a nR n wires in...

Page 300: ...6 116 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 45 Bottom Ribbon Cables and Wire Harnesses Option 420...

Page 301: ...Was 2190 0034 Lock washer 0380 0644 Jack screw N5247 00010 1 Rear panel 3050 2330 Lock washer For A24 IF MUX board connectors 2950 0414 Hex nut For A24 IF MUX board connectors 2190 0584 Lock washer 0...

Page 302: ...washer for item 2950 0035 Hex nut for item 8120 5063 2 BNC cable 6960 0523 5 Hole plug 6960 0076 1 Hole plug a This part number is no longer required on s n s 5541 5542 5544 5545 5547 5549 and newer...

Page 303: ...Keysight N5227B Service Guide 6 119 Replaceable Parts Replaceable Parts Listings Figure 6 46 Rear panel Assembly All Options...

Page 304: ...n B1 3160 4199 5 Fan 3160 0281 Was 3160 4198 5 Fan guard 0361 1272 20 Fan rivet N5245 00006 1 Fan bracket for 2 fans E4440 00021 2 Fan EMI shield for 2 fans N5245 00003 1 Fan bracket for 3 fans 0515 0...

Page 305: ...Keysight N5227B Service Guide 6 121 Replaceable Parts Replaceable Parts Listings Figure 6 47 Fan Assemblies Side View All Options...

Page 306: ...0372 27 Machine screw M3 0 x 8 pan head 4 to attach power supply bracket to inner panels 23 to attach inner cover to chassis 0400 0353 18 Grommets for A19 midplane board qty 6 and A18 system motherbo...

Page 307: ...Keysight N5227B Service Guide 6 123 Replaceable Parts Replaceable Parts Listings Figure 6 48 Top Hardware and Miscellaneous Parts Top View All Options...

Page 308: ...20131 1 Brace 2 port To connect attenuator receiver couplers with 70 GHz doublers 0515 0380 Machine screw M4 0 x 10 pan head To attach brace to 70 GHz doubler mounts N5247 20005 2 70 GHz doubler mount...

Page 309: ...or 1 85 mm f f 50 ohm qty 12 for 2 port qty 24 for 4 port 1250 3310 12 24 Lock washer for bulkhead connectors qty 12 for 2 port qty 24 for 4 port 1250 3516 12 24 Hex nut for bulkhead connectors qty 12...

Page 310: ...6 126 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 49 Bottom Hardware and Miscellaneous Parts...

Page 311: ...ket W1312 00048 1 Midplane bracket N5247 00015 1 Right side inner bracket N5247 00001 1 Chassis 0515 0372 Machine screw M3 0 x 8 pan head To attach midplane bracket to left and right side inner bracke...

Page 312: ...6 128 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 50 Internal Hardware and Miscellaneous Parts All Options...

Page 313: ...rew M5 0 x 18 flat head To attach strap handle 5021 2840 4 Key lock for bottom foot 5041 7906 4 Bottom foot N9020 40007 4 Hole plug When analyzer is rack mounted 0515 0372 Machine screw M3 0 x 8 pan h...

Page 314: ...ers 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 wrench 8710 2174 1 2 in...

Page 315: ...PIB cable 2 meter 6 6 feet 10833B GPIB cable 4 meter 13 2 feet 10833C GPIB cable to GPIB cable adapter 10834A Fuses rear panel Bias Input Fuse Ports 1 2 3 and 4 0 5 A 125 V 2110 0824 Was 2110 0046 Pro...

Page 316: ...mat and earth ground wire 9300 0797 ESD heel strap 9300 1308 Rack Mount Kits and Handle Kits Rack mount kit for analyzers without handles Option 1CM N5231AU 1CM or N5232AU 1CM or N5239AU 1CM Option 1C...

Page 317: ...e 6 133 Replaceable Parts Replaceable Parts Listings a For rack mount use you must replace factory installed ruggedized handles thick aluminum no trim with classic handles thin aluminum with plastic t...

Page 318: ...6 134 Keysight N5227B Service Guide Replaceable Parts Replaceable Parts Listings 6...

Page 319: ...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...

Page 320: ...s 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...

Page 321: ...wing 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...

Page 322: ...5 GHz source boards Doubler boards Frequency reference board Signal processing ADC module SPAM board page 7 17 A18 System motherboard page 7 19 A19 Midplane board page 7 22 A20 Power supply page 7 24...

Page 323: ...7 50 A46 A47 A48 A49 Port 1 receiver step attenuator Optional Port 3 receiver step attenuator Optional Port 4 receiver step attenuator Optional Port 2 receiver step attenuator Optional page 7 47 A55 S...

Page 324: ...with a T 20 TORX driver 5 Slide the outer cover toward the rear of the analyzer and remove it Removing the Inner Cover 1 With a T 10 TORX driver remove the pan head screws item 2 With a T 10 TORX dri...

Page 325: ...rigid 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 Remove the lower panel overlay 6 With a T 10 TORX remove the 2 screws 2 Port...

Page 326: ...7 8 Keysight N5227B Service Guide Repair and Replacement Procedures Removing and Replacing the Front Panel Assembly 7 Figure 7 1 Front Panel Assembly Removal...

Page 327: ...Disconnect the power cord 2 Remove the front panel assembly Refer to Removing and Replacing the Front Panel Assembly on page 7 7 Removing the RPG Assembly 1 Remove the round knob RPG from the front p...

Page 328: ...controller board and front panel interface board 2 Raise the retaining clamps on the LCD display flat flex cable s two connectors item 15 3 Disconnect the flat flex cable from the touchscreen item 15...

Page 329: ...t flex cable s two connectors item 15 4 Disconnect the flat flex cable from the touchscreen item 15 5 The LED driver board cable item 22 can be removed from the connection on the LCD Display 6 The LCD...

Page 330: ...Replacing the A1 A3 and Other Front Panel Subassemblies 7 11 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...

Page 331: ...3 Repair and Replacement Procedures Removing and Replacing the A1 A3 and Other Front Panel Subassemblies Figure 7 3 A3 Display Assembly with LCD Display Cables Figure 7 4 Remove LCD Cable LCD to LED I...

Page 332: ...nd Replacement Procedures Removing and Replacing the A1 A3 and Other Front Panel Subassemblies 7 Figure 7 5 Remove LCD Mounting Plate to LCD Display LCD Display Cable Figure 7 6 Removing the Flat Flex...

Page 333: ...vice Guide 7 15 Repair and Replacement Procedures Removing and Replacing the A1 A3 and Other Front Panel Subassemblies Figure 7 7 Power Keypad to Power Button Boards Figure 7 8 Remove Speaker Assembly...

Page 334: ...g and Replacing the A1 A3 and Other Front Panel Subassemblies 7 Replacement Procedure 1 Reverse the order of the removal procedure 2 Perform the post repair adjustments verifications and performance t...

Page 335: ...board b A5 source board only on the top side of the analyzer disconnect the cables from the A4 A7 and A8 boards c On the top side of the analyzer remove screws at each end of the source board to be re...

Page 336: ...f the new board Be sure to orient these cables the same as they were on the old board 2 Perform the post repair adjustments verifications and performance tests that pertain to this removal procedure R...

Page 337: ...Replacing the A21 CPU Board Assembly on page 7 26 6 Disconnect the rear panel cables 7 Remove the threaded hardware from the rear panel 8 Remove the rear panel 9 Remove the A22 GPIB board Refer to Re...

Page 338: ...screws item that secure the front bracket to the chassis left inner panel 3 Remove six screws item that secure the A18 system motherboard to the chassis 4 Slide the A18 system motherboard toward the r...

Page 339: ...Keysight N5227B Service Guide 7 21 Repair and Replacement Procedures Removing and Replacing the A18 System Motherboard Figure 7 9 A18 System Motherboard Removal...

Page 340: ...the board ejectors item to the upright position to disengage the A19 midplane board from the A18 system motherboard 7 Note the positions of the six rubber grommets item on the bottom three A19 midplan...

Page 341: ...Keysight N5227B Service Guide 7 23 Repair and Replacement Procedures Removing and Replacing the A19 Midplane Board Figure 7 10 A19 Midplane Board Removal...

Page 342: ...efer 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 A20...

Page 343: ...Keysight N5227B Service Guide 7 25 Repair and Replacement Procedures Removing and Replacing the A20 Power Supply Assembly Figure 7 11 A20 Power Supply Assembly Removal...

Page 344: ...e CPU assembly rear panel and two from the ejector handles 4 Grasp the two ejector handles and rotate them outward toward the sides of the analyzer as shown in the illustration This will disengage the...

Page 345: ...Keysight N5227B Service Guide 7 27 Repair and Replacement Procedures Removing and Replacing the A21 CPU Board Assembly Figure 7 12 A21 CPU Board Assembly Removal...

Page 346: ...efer to Removing the Covers on page 7 6 3 Remove the A20 power supply assembly Refer to Removing and Replacing the A20 Power Supply Assembly on page 7 24 4 Remove the A21 CPU board assembly Refer to R...

Page 347: ...Keysight N5227B Service Guide 7 29 Repair and Replacement Procedures Removing and Replacing the A22 GPIB Board Figure 7 13 A22 GPIB Board Removal...

Page 348: ...SET I O connector 7 Remove 10 screws item C from the A23 test set motherboard Before replacing the A23 board if possible Run EEBackup exe using the directory for your Windows operating system Windows...

Page 349: ...d the front of the instrument until the rear panel BNC connectors are free of the rear panel then lift the motherboard and remove it from the analyzer Replacement Procedure 1 Reverse the order of the...

Page 350: ...7 32 Keysight N5227B Service Guide Repair and Replacement Procedures Removing and Replacing the A23 Test Set Motherboard 7 This page intentionally left blank...

Page 351: ...ALL gray flexible RF cables item from the A24 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 co...

Page 352: ...7 34 Keysight N5227B Service Guide Repair and Replacement Procedures Removing and Replacing the A24 IF Multiplexer Board 7 Figure 7 14 A24 IF Multiplexer Board Removal...

Page 353: ...e analyzer bottom side up 4 Disconnect the ribbon cable item from the A25 HMA26 5 assembly 5 Disconnect cable W61 from the A25 HMA26 5 6 Remove cable W62 from between the A25 HMA26 5 and the A26 split...

Page 354: ...7 36 Keysight N5227B Service Guide Repair and Replacement Procedures Removing and Replacing the A25 HMA26 5 7 Figure 7 15 A25 HMA26 5 Removal...

Page 355: ...m side up 4 Disconnect cable W62 at the A26 splitter connection 5 Remove cable W63 from between the A26 splitter and the A27 mixer brick 6 Remove cable W64 from between the A26 splitter and the A28 mi...

Page 356: ...7 38 Keysight N5227B Service Guide Repair and Replacement Procedures Removing and Replacing the A26 Splitter 7 Figure 7 16 A26 Splitter Removal...

Page 357: ...ocks to be removed 6 Disconnect the ribbon cables item from each of the mixer bricks 7 Remove ten screws item from the mixer brick mounting block 8 Move the disconnected semirigid cables out of the wa...

Page 358: ...e If replacing the A28 mixer brick remember to install the W58 2 4 mm cap 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...

Page 359: ...e 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 b...

Page 360: ...air and Replacement Procedures Removing and Replacing the A29 A32 Receiver Couplers and Receiver Coupler Mounting Brackets 7 Figure 7 18 A29 through A32 Receiver Couplers Removal Figure 7 19 Orientati...

Page 361: ...to be removed 6 Remove the coupler nut item from each coupler to be removed 7 Move the disconnected semirigid cables out of the way and remove the coupler s from the analyzer It may be necessary to lo...

Page 362: ...7 44 Keysight N5227B Service Guide Repair and Replacement Procedures Removing and Replacing the A33 A36 Test Port Couplers 7 Figure 7 20 A33 through A36 Test Port Couplers Removal...

Page 363: ...way and lift the A37 reference mixer switch and mounting bracket 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 mo...

Page 364: ...7 46 Keysight N5227B Service Guide Repair and Replacement Procedures Removing and Replacing the A37 Reference Mixer Switch 7 Figure 7 21 A37 Reference Mixer Switch Removal...

Page 365: ...lete assembly Disconnect two semirigid cables item from each attenuator to be removed It may be necessary to remove additional cables to remove the attenuator bracket If so note the location and orien...

Page 366: ...ng and Replacing the A38 A41 Source Attenuators and the A46 A49 Receiver Attenuators 7 2 Perform the post repair adjustments verifications and performance tests that pertain to this removal procedure...

Page 367: ...Service Guide 7 49 Repair and Replacement Procedures Removing and Replacing the A38 A41 Source Attenuators and the A46 A49 Receiver Attenuators Figure 7 23 Orientation of Source and Receiver Attenuato...

Page 368: ...the wire harness cable item from the bias tee 6 Remove two test set deck screws item from the bias tee block to be removed 7 Move the disconnected semirigid cables out of the way and remove the bias...

Page 369: ...ight N5227B Service Guide 7 51 Repair and Replacement Procedures Removing and Replacing the A42 A45 Bias Tees Figure 7 24 A42 through A45 Bias Tees Removal Figure 7 25 Orientation of Bias Tees with Bl...

Page 370: ...he user has loaded unique calibration kit information navigate to C Program Files Keysight Network Analyzer and copy USER_CALKITFILE to a USB flash memory drive Also copy any personal user files that...

Page 371: ...and Replacement Procedures Removing and Replacing the A55 Solid State Drive SSD The files that were previously saved onto a USB flash memory drive must now be installed onto the new SSD The network a...

Page 372: ...ct all semirigid cables item from each 70 GHz doubler on the mounting bracket to be removed 6 Disconnect the ribbon cable item from each doubler 7 Remove six screws item that attach the doubler mounti...

Page 373: ...3 70 GHz Doublers 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...

Page 374: ...oval Procedure Refer to Figure 7 28 on page 7 57 Figure 7 32 on page 7 61 and Figure 7 29 on page 7 58 for this procedure 1 Disconnect the power cord 2 Remove the outer cover Refer to Removing the Cov...

Page 375: ...rocedures Removing and Replacing the A70 or A75 Low Frequency Extension LFE Board 5 Disconnect the 8121 2919 and N5245 60005 ribbon cables Refer to Figure 7 28 on page 7 57 Figure 7 28 Disconnect Ribb...

Page 376: ...or A75 Low Frequency Extension LFE Board 7 6 Disconnect ALL gray flexible RF cables item through from the A70 LFE board Refer to Figure 7 29 on page 7 58 Figure 7 29 A70 LFE Board Remove Cables 8120 5...

Page 377: ...1 bias combiner RF IN cable from the Port1 connector on the LFE board Refer to Figure 7 30 on page 7 59 Figure 7 30 Remove A71 bias combiner cable N5240 60097 from Port1 connector on the A70 LFE boar...

Page 378: ...LFE Board 7 9 Remove A74 port 2 bias combiner RF IN cable to Port2 connector on the LFE board Figure 7 31 A74 port 2 bias combiner cable N5240 60097 from Port2 connector on the A70 LFE board 10 A70 LF...

Page 379: ...Removal is Similar 12 Remove the two screws from the LFE board item Save for reuse Refer to Figure 7 32 on page 7 61 13 Lift the LFE board N5291 60001 and remove it from the analyzer Refer to Figure...

Page 380: ...de up 4 Disconnect the two semirigid cables item and from the bias tee combiner to be removed Refer to Figure 7 33 on page 7 64 5 Remove two screws from the bias tee combiner and bracket to chassis as...

Page 381: ...combiner to 6 in lbs Torque the bias combiner with bracket assembly to the chassis screws x2 to 9 in lbs 2 As shown in Figure 7 34 on page 7 64 position the bias tees on the attenuator brackets as ind...

Page 382: ...biners 7 Figure 7 33 A71 A74 Bias Tee Combiners and Cables Removal N5222B Option 420 Shown All Other PNA LFE Options are Similar Figure 7 34 Remove Bias Combiner Bracket Assemblies from the Chassis N5...

Page 383: ...Removing and Replacing the A71 A74 Bias Tee Combiners Figure 7 35 Remove Bias Combiner Cables and Clamps 5023 3299 5087 7403 0515 2141 and N5240 60097 All Assemblies are Shown but Only Remove the Defe...

Page 384: ...7 6 3 Remove the A20 power supply assembly Refer to Removing and Replacing the A20 Power Supply Assembly on page 7 24 4 Remove the A21 CPU board assembly Refer to Removing and Replacing the A21 CPU B...

Page 385: ...Keysight N5227B Service Guide 7 67 Repair and Replacement Procedures Removing and Replacing the Rear Panel Figure 7 37 Rear Panel Removal...

Page 386: ...he power cord 2 Remove the test port couplers Refer to Removing and Replacing the A33 A36 Test Port Couplers on page 7 43 3 Remove two screws from the LED board to be removed and remove the LED board...

Page 387: ...Keysight N5227B Service Guide 7 69 Repair and Replacement Procedures Removing and Replacing the Front Panel LED Boards This page intentionally left blank...

Page 388: ...supply bracket Refer to Removing and Replacing the A20 Power Supply Assembly on page 7 24 5 Remove screws item five on the right side and seven on the left side that attach the fan brackets to the cha...

Page 389: ...epair and Replacement Procedures Removing and Replacing the Fans 2 Perform the post repair adjustments verifications and performance tests that pertain to this removal procedure Refer to Table 7 2 on...

Page 390: ...Drive SSD on page 7 52 3 Remove 22 top cover attachment screws item 4 Remove the top cover from the A21 CPU board assembly 5 Remove the battery from the battery holder by lifting it at the open end o...

Page 391: ...Keysight N5227B Service Guide 7 73 Repair and Replacement Procedures Removing and Replacing the Lithium Battery Figure 7 39 Lithium Battery Removal...

Page 392: ...2 USB board No adjustment needed Check for proper operation A3 display assembly Touchscreen Adjustment and Verification A3 Display Test in Chapter 4 A4 13 5 GHz source 1 synthesizer board EE Default A...

Page 393: ...stment IF Response Adjustment Available Only with Option S93093 4A B and or S93900 1 2 4 5 7A B Installed Frequency Accuracy Test Source Power Accuracy Test Source Maximum Power Output Test Source Pow...

Page 394: ...stment Receiver Characterization Receiver Adjustment IF Response Adjustment Available Only with Option S93093 4A B and or S93900 1 2 4 5 7A B Installed Frequency Accuracy Test Source Power Accuracy Te...

Page 395: ...y with Option S93093 4A B and or S93900 1 2 4 5 7A B Installed The Operator s Check A25 HMA26 5 EE Default Adjustment LO Drive only EE Default Adjustment LO Drive Noise Figure only Option 029 equipped...

Page 396: ...justment Receiver Characterization Receiver Adjustment IF Response Adjustment Available Only with Option S93093 4A B and or S93900 1 2 4 5 7A B Installed Source Maximum Power Output Test Calibration C...

Page 397: ...ad and write to the drive A70 A75 LFE board Source Adjustment IF Gain Adjustment Receiver Characterization Receiver Adjustment IF Response Adjustment Available Only with Option S93093 4A B and or S939...

Page 398: ...Replacement Procedures Post Repair Procedures 7 b If a backup copy of receiver calibration data from the faulty disk drive is available it can be copied to the new disk drive If not new data must be g...

Page 399: ...r 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 1...

Page 400: ...view 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 s...

Page 401: ...esentation 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...

Page 402: ...s 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 Iso...

Page 403: ...rd 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 S...

Page 404: ...nd 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...

Page 405: ...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 r...

Page 406: ...or 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...

Page 407: ...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 po...

Page 408: ...d 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...

Page 409: ...ware Entitlement Certificate If you have received an Software Entitlement Certificate follow the instructions on the certificate under HOW TO USE THIS CERTIFICATE to obtain license key file s for the...

Page 410: ...Accessing the Keysight License Manager on page 8 11 2 In the Keysight License Manager window that opens in the left hand column press Local host Local licenses A list of available options similar to...

Page 411: ...or Changing a Serial Number It is necessary to reinstall the instrument serial number if the test set midplane board is replaced To change an incorrect serial number it is necessary for your instrume...

Page 412: ...e 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 na support ke...

Page 413: ...Problems If you suspect that you have a hard disk 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 Ser...

Page 414: ...source signals and receive clean test signals Storing Correction Constants After performing any adjustment listed on page 3 44 in this manual store the correction constants to a backup file on the ana...

Page 415: ...This information is subject to change without notice Keysight Technologies 2011 2020 Edition 1 May 2020 N5227 90026 www keysight com...

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