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4-14 Keysight N5244A/45A Service Guide

Troubleshooting
Power Up Troubleshooting

Figure 4-3

Fan Power Cable Connections

If the correct voltage is present at each connection and the fan connectors

are in good mechanical condition, suspect a defective fan. Refer to

“Removing and Replacing the Fans” on page 7-75

If the correct voltage is not present, suspect a defective A18 system

motherboard. Refer to

“Removing and Replacing the A18 System

Motherboard” on page 7-21

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

If the display is dim, the A3 display assembly is defective. Refer to

“Removing and Replacing the A1–A3 and Other Front Panel

Subassemblies” on page 7-11

There are no front panel adjustments for intensity and contrast of the LCD

Содержание PNA-X N5244A

Страница 1: ...Service Guide Keysight 2 Port and 4 Port PNA X Microwave Network Analyzers This manual provides documentation for the following models N5244A 10 MHz 43 5 GHz and N5245A 10 MHz 50 GHz ...

Страница 2: ... 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 r...

Страница 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...

Страница 4: ... 3 33 Source Power Linearity Test 3 34 Frequency Accuracy Test 3 35 Trace Noise Test 3 36 Receiver Compression Test 3 37 Noise Floor Test 3 38 Calibration Coefficients Test 3 39 Dynamic Accuracy Test Version 1 3 40 Dynamic Accuracy Test Version 2 3 41 System Noise Figure Test 3 43 Noise Jitter Test 3 44 Noise Receiver Linearity Test 3 45 Noise Receiver Compression Test 3 46 Adjustments 3 49 10 MHz...

Страница 5: ...ace Board 4 20 Rear Panel Troubleshooting 4 21 Checking the USB Ports 4 21 Checking the CONTROLLER Port 4 21 LAN Troubleshooting 4 22 Measurement System Troubleshooting 4 28 Before you begin consider Where do you see a problem 4 28 Verifying the 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 Grou...

Страница 6: ...witches and A54 Combiner Optional 5 24 Receiver Group Operation 5 25 A46 A49 35 dB Receiver Step Attenuators Optional 5 25 A37 Reference Mixer Switch 5 25 A27 and A28 Mixer Bricks 5 25 A24 IF Multiplexer Board 5 26 A16 SPAM Board Analog Description 5 27 Digital Processing and Digital Control Group Operation 5 30 Front Panel Subgroup 5 32 Data Acquisition and Processing Subgroup 5 33 Power Supply G...

Страница 7: ...88 4 Port Configuration Options 400 419 H85 6 99 4 Port Configuration Options 400 419 423 6 109 4 Port Configuration Options 400 419 423 029 6 121 4 Port Configuration Options 400 419 423 H29 6 136 4 Port Configuration Options 400 419 423 H85 6 138 4 Port Configuration Options 400 419 423 H85 H29 6 150 4 Port Configuration Options 400 419 423 H85 029 6 152 Rear Panel Assembly All Options 6 165 Fan...

Страница 8: ...erence Coupler Mounting Brackets 7 42 Removing and Replacing the A33 A36 Test Port Couplers 7 44 Removing and Replacing the A37 Reference Mixer Switch 7 46 Removing and Replacing the A38 A41 Source Attenuators and the A46 A49 Receiver Attenuators 7 48 Removing and Replacing the A42 A45 Bias Tees 7 50 Removing and Replacing the A50 A53 Bypass Switches and the A54 Combiner 7 52 Removing and Replacin...

Страница 9: ...rms 8 6 Error Term Data 8 8 Option Enable Utility 8 11 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 f...

Страница 10: ...8 Keysight N5244A 45A Service Guide Contents ...

Страница 11: ... 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 protec...

Страница 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...

Страница 13: ... 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 autoranging line voltage input Be sure the supply voltage is within the specified ran...

Страница 14: ...ust 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 forced convection must be used The measuring terminals on this instrument are designed to be used with external signals described in Measurement Category I but NOT with external signals described in Cat...

Страница 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...

Страница 16: ...1 6 Keysight N5244A 45A Service Guide Safety and Regulatory Information General Safety Considerations 1 Figure 1 1 Location of Calibration Stickers on PNA ...

Страница 17: ...tions 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 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...

Страница 18: ...1 8 Keysight N5244A 45A Service Guide Safety and Regulatory Information Electrostatic Discharge Protection 1 Figure 1 2 ESD Protection Setup ...

Страница 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...

Страница 20: ...tery on the A21 CPU board assembly refer to Removing and Replacing the Lithium Battery on page 7 77 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 ...

Страница 21: ...ades 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 address ...

Страница 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 ...

Страница 23: ...icrowave 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 connector...

Страница 24: ...prefixes Freq 10 MHz to 4 2 GHz Range 30 to 20 dBm 8482A None P A T Power sensor All prefixes Freq 50 MHz to 40 or 50 GHz Range 30 to 20 dBm 8487A None P A T Dynamic accuracy test set 5240 and above None specified U3020AD01 None P 5240 and below None specified Z5623A H01e e The Z5623A has been discontinued but it or the U3020AD01 can be used None P Compression test set All prefixes None specified ...

Страница 25: ...Return Loss 28 dB 11903D None P A T Attenuators 2 4 mm m f 10 dB fixed attenuator Accuracy 0 5 dB Freq 10 MHz to 40 or 50 GHz 8490D Option 010 None P 2 4 mm m f 20 dB fixed attenuator Accuracy 0 5 dB Freq 10 MHz to 40 or 50 GHz 8490D Option 020 None P a Unless specified otherwise equipment listed is required for all analyzer models b P Performance tests A Adjustments T Troubleshooting R Repair V S...

Страница 26: ...m open end torque wrench 0 9 N m 8 in lb setting for Port 1 and Port 2 measurement connections N A N A R 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 A R a Unless specified ot...

Страница 27: ...82A 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 anal...

Страница 28: ...onfiguration 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 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 c...

Страница 29: ...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 Begi...

Страница 30: ...lyzer 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 22 Performance Testsa A brief summary of each performance test Source Maximum Power Output Test Source Power Li...

Страница 31: ...ustment IF Gain Adjustment Receiver Characterization Receiver Adjustment EE Default Adjustment IF Response Adjustment Option 090 093 or 094 Only Noise Figure Adjustment Available with Option 029 Installed page 3 49 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 T...

Страница 32: ...erature 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 max...

Страница 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...

Страница 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 ...

Страница 35: ...to verify the analyzer 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 ...

Страница 36: ...h the 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 limi...

Страница 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...

Страница 38: ...ping 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 Z540 3 2006 and ISO...

Страница 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 ...

Страница 40: ...ttenuators 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 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...

Страница 41: ...be prompted to connect them as 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 ...

Страница 42: ...3 14 Keysight N5244A 45A Service Guide Tests and Adjustments Preliminary Checks 3 Figure 3 3 Operator s Check Dialog Boxes ...

Страница 43: ... 20 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 ...

Страница 44: ...MULUS 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 cali...

Страница 45: ...ower 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 loss...

Страница 46: ...ck 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 F...

Страница 47: ...isplay 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 ...

Страница 48: ...yzer 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 Refere...

Страница 49: ...me 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 ...

Страница 50: ...p 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 p...

Страница 51: ...wn 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 ...

Страница 52: ...the 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 t...

Страница 53: ...s in the cable tests earlier in 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 verification devices be measured with their female connectors connected to port 1 or 3 and their male connectors connected to port 2 or 4 Although the performance for all S ...

Страница 54: ...ure 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 minutes 2 Insert the verification 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 ...

Страница 55: ...he number 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 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 I...

Страница 56: ...page 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 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 ...

Страница 57: ...ests and Adjustments System Verification 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 of Printed Tabular Verification Results ...

Страница 58: ...tem 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 F...

Страница 59: ...Keysight N5244A 45A Service Guide 3 31 Tests and Adjustments System Verification Figure 3 13 Example of Printed Graphical Verification Results ...

Страница 60: ... Source Maximum Power Output Test Source Power Linearity Test Frequency Accuracy Test Trace Noise Test Receiver Compression Test Noise Floor Test Calibration Coefficients Test Dynamic Accuracy Test Version 1 Dynamic Accuracy Test Version 2 System Noise Figure Test Noise Jitter Test Noise Receiver Linearity Test Noise Receiver Compression Test Source Power Accuracy Test Function of the Test To conf...

Страница 61: ...f the analyzer and then repeat this test Refer to Checking the Source Group on page 4 34 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 Leveled Power Equipment Used Power meter Power sensors Any necessary adapters Description of the Test 1 The analy...

Страница 62: ...wer out of Port 1 and vice versa Ports 3 and 4 are similarly tested as a pair on 4 Port 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 pair to be measured 3 A test cable is connected between the port pair to be tested with 20 dB of attenuation in seri...

Страница 63: ...frequency so the deviation from a perfectly accurate frequency is exactly doubled The frequency accuracy 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 is Preset 2 The analyzer is set up for a CW measurement on Port 1 3 A test cable is connected betwe...

Страница 64: ...tween the port pair to be tested 4 The analyzer is set to a series of CW frequencies across its full frequency range 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 s trace noise and are compared with the Trace Noise magnitude and phase specifications ...

Страница 65: ...e analyzer is Preset The two test set output attenuators are set to 0 dB 2 The analyzer is set up for a 201 point CW transmission measurement for the port pair to be tested with the specified IF bandwidth typically 1 kHz 3 A test cable is connected between the analyzer source port and the test set input port A test cable is connected to the test set output port 4 A power sensor is connected to the...

Страница 66: ...noise floor for the analyzer s receivers Specification Tested Test Port Input Test Port Noise Floor Equipment Used Power meter Power sensors Test cable Calibration kit Description of the Test This test uses the source signal out of one analyzer test port as part of the noise floor measurement on another test port Port 2 is the source port when measuring the noise floor of Port 1 Port 1 is the sour...

Страница 67: ...er still fails this test replace the A12 SPAM board and then repeat this test Refer to Removing and Replacing the A4 A17 Boards For analyzers with serial numbers prefixed MY SG US5150 and below on page 7 15 and Removing and Replacing the A4 A17 Boards For analyzers with serial numbers prefixed MY SG US5201 and above on page 7 18 Calibration Coefficients Test Function of the Test To verify the unco...

Страница 68: ...e Refer to Chapter 7 Repair and Replacement Procedures for instructions on replacing the suspected faulty component or assembly Dynamic Accuracy Test Version 1 This description applies to all E836xA B C and N5230A C instruments It also applies to N5241A 42A 44A 45A instruments with serial numbers less than xx5240xxxx For all other instruments see test version 2 Function of the Test To measure the ...

Страница 69: ...hed 8 New power meter and analyzer receiver reference readings are recorded The process is repeated until the total attenuation reaches 120 dB 9 The process is reset to the 20 dB reference level and it is run in reverse until the total attenuation reaches 0 dB 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 m...

Страница 70: ...is adjusted until the power sensor reads 20 dBm The PNA source is then turned off the signal generator RF is turned on and the signal generator power is adjusted until the power sensor reads 20 dBm 3 The power sensor is disconnected and the test cable is attached to the analyzer port under test 4 Both sources are turned on and the signal generator s frequency is set to 2 Hz above the analyzer s fr...

Страница 71: ...fication Tested Test Port Input Option 029 Receiver Noise Figure Equipment Used 346C noise source BNC cable Description of the Test 1 The analyzer is Preset 2 The 346C noise source is connected to Port 2 A BNC cable is connected between the noise source and the 28V VDC output on the rear panel of the analyzer 3 The analyzer is set to make a noise power density measurement with an 800 kHz noise IF ...

Страница 72: ...hy analyzer this measurement is only affected by the sampling error of the analog to digital converter on the noise receiver board 1 The analyzer is Preset 2 The analyzer is set to make a noise power density measurement with the noise gain set to 0 dB and the noise bandwidth set to 4 MHz The analyzer is set up for a 201 point CW transmission measurement using the noise receiver 3 A load is connect...

Страница 73: ...ic accuracy test set s source port and the dynamic accuracy test set s receiver port is connected to the PNA X Port 2 A power sensor is connected to the dynamic accuracy test set s power meter port 2 Within the dynamic accuracy test set the source signal is routed through a small amplifier and a 10 dB step attenuator A1 to a power splitter One side of the power splitter is connected to the power s...

Страница 74: ...heck for proper torquing of all semi rigid cables in the receiver chain and then repeat this test If the analyzer still fails this test replace the A7 Noise Receiver board and repeat this test Refer to Removing and Replacing the A4 A17 Boards For analyzers with serial numbers prefixed MY SG US5150 and below on page 7 15 and Removing and Replacing the A4 A17 Boards For analyzers with serial numbers...

Страница 75: ...t 2 7 A receiver measurement is made at the calibration level and the receiver response is normalized 8 The Port 1 source attenuator is set such that the power level matches the compression level and another sweep is made The source power calibration is adjusted for any deviation from the expected power level change 9 Steps 7 and 8 are repeated for each of the three gain stages 10 The analyzer is ...

Страница 76: ...repeat this test If the analyzer still fails this test replace the A7 Noise Receiver board and repeat this test Refer to Removing and Replacing the A4 A17 Boards For analyzers with serial numbers prefixed MY SG US5150 and below on page 7 15 and Removing and Replacing the A4 A17 Boards For analyzers with serial numbers prefixed MY SG US5201 and above on page 7 18 ...

Страница 77: ...e 3 54 Noise Figure Adjustment Available with Option 029 Installed on page 3 58 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 A14 frequency reference board assembly Equipment Used for the 10 MHz Frequency Reference Adjus...

Страница 78: ...TY 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 Ad...

Страница 79: ...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...

Страница 80: ... 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 new pr...

Страница 81: ...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 ...

Страница 82: ...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...

Страница 83: ...cted in the Select Adjustments box Verify the directory path displayed in the Select ENR Data File box contains the ENR file for the noise source you are using If not the correct ENR file click Browse to navigate to the correct file If the proper file does not already exist click Create New to enter data for the noise source you are using The PNA will automatically remember and use the last file s...

Страница 84: ...egin 4 As shown in Figure 3 20 connect an RF cable between the network analyzer test ports 1 and 2 Figure 3 20 Equipment Setup 1 for the Receiver Adjustment Keysight Although not shown in the following graphics test port adapters for the PNA may be required for this procedure See the table on the previous page for model numbers ...

Страница 85: ...eceiver Adjustment 6 When prompted reconnect an RF cable between the network analyzer test ports 1 and 2 7 When prompted disconnect the cable at port 2 and insert the ECal module between port 2 and the free end of the cable Connect the ECal module directly to port 2 without using any adapters if possible See Figure 3 22 Figure 3 22 Equipment Setup 3 for the Receiver Adjustment The entire procedure...

Страница 86: ...y offset that may occur between various bandwidth settings Noise Correction Adjustment overwrites the factory noise receiver calibration Equipment Used for the Noise Figure Adjustment Procedure 1 Press UTILITY then then then click Noise Adjustment 2 On the PNA Noise Adjustment dialog box see Figure 3 19 a In Select Adjustments leave all four adjustments selected by default b In Power Meter Set the...

Страница 87: ...A If using a dual channel power meter and the sensor is attached to the B channel select Ch B If the sensor has already been zeroed and calibrated select Skip Zero and Cal before first use Figure 3 23 PNA Noise Adjustment Dialog Box 3 Click Begin 4 As shown in Figure 3 24 connect an RF cable between the network analyzer test ports 1 and 2 ...

Страница 88: ...ect the cable from port 2 and connect it to the power sensor See Figure 3 25 Figure 3 25 Equipment Setup 2 for the Receiver Adjustment 6 When prompted disconnect the sensor from the cable and insert the ECal module between port 2 and the free end of the cable Connect the ECal module directly to port 2 without using any adapters if possible See Figure 3 26 ...

Страница 89: ...Keysight N5244A 45A Service Guide 3 61 Tests and Adjustments Adjustments Figure 3 26 Equipment Setup 3 for the Receiver Adjustment The entire procedure takes about 30 to 45 minutes ...

Страница 90: ...3 62 Keysight N5244A 45A Service Guide Tests and Adjustments Adjustments 3 ...

Страница 91: ...on 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 ...

Страница 92: ...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...

Страница 93: ...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 ...

Страница 94: ...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 ...

Страница 95: ... 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 ...

Страница 96: ... 4 8 3 Is the Windows operating system running If not refer to Operating System Recovery in Chapter 8for 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 ...

Страница 97: ...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 ...

Страница 98: ...ng 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 hear...

Страница 99: ...ing 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 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 by the LEDs as shown in Figure 4 2 the power ...

Страница 100: ...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 ...

Страница 101: ...ltage 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 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...

Страница 102: ...analyzers with serial numbers prefixed MY SG US5150 and below on page 7 15 7 Remove the A15 13 5 GHz synthesizer board refer to Removing and Replacing the A4 A17 Boards For analyzers with serial numbers prefixed MY SG US5150 and below on page 7 15 8 Remove the A17 13 5 GHz synthesizer board refer to Removing and Replacing the A4 A17 Boards For analyzers with serial numbers prefixed MY SG US5150 an...

Страница 103: ... on page 4 9 to check the individual supplies 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 21 If only one or two fans are not functioning and the power supplies are within specifications suspect the A18 system motherboard or defective fan s Perform the following procedure...

Страница 104: ... suspect a defective A18 system motherboard Refer to Removing and Replacing the A18 System Motherboard on page 7 21 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...

Страница 105: ...obable cause is the A21 CPU board Refer to Removing and Replacing the A21 CPU Board Assembly on page 7 28 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 9 4 If the front panel interface ribbon cable is properly conn...

Страница 106: ... 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...

Страница 107: ...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 11 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...

Страница 108: ...uspect 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 11 Trace 4 Display Bk Sp Traces Avg 0 STIMULUS Keys Receiver 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...

Страница 109: ...ify 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 pa...

Страница 110: ... 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...

Страница 111: ...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 A21 CPU board is faulty Refer to Removing and Replacing the A21 CPU Board Assembly on page 7 28 Checking the CONTROLLER Port The network analyzer uses a National Instrum...

Страница 112: ...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...

Страница 113: ... 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...

Страница 114: ... 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...

Страница 115: ...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...

Страница 116: ...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...

Страница 117: ...Keysight N5244A 45A Service Guide 4 27 Troubleshooting Rear Panel Troubleshooting Figure 4 5 Construction of a Crossover Cable ...

Страница 118: ...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 32 Hard Failure With a hard failure the PNA does not perform well and displays one or more err...

Страница 119: ... 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 A23 ...

Страница 120: ...played 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 and 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 wind...

Страница 121: ...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...

Страница 122: ...t motherboard Use the list on the following pages to help you determine in which analyzer 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 j...

Страница 123: ... 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...

Страница 124: ...er traces having partial dropouts 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 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 chapt...

Страница 125: ... 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 A14 50 MHz Reference Outputs to check the source group Checking the A14 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 page 6 21 Locate flexible cables W...

Страница 126: ...er setting 6 If the LO signal is not present but the 50 MHz reference signal from Checking the A14 50 MHz Reference Outputs is present replace the A15 LO synthesizer board Refer to Removing and Replacing the A4 A17 Boards For analyzers with serial numbers prefixed MY SG US5150 and below on page 7 15 7 If the signal is present reconnect cable W41 and then continue with Checking the A25 HMA26 5 Outp...

Страница 127: ...or an 800 MHz CW frequency and observe the spectrum analyzer measurement For analyzers with DSP version 4 0 an 807 61 MHz signal should be present For analyzers with DSP version 5 0 an 807 44 MHz signal should 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 si...

Страница 128: ...he end of this chapter and to Top Cables All Cables All Options on page 6 21 Locate the cables W3 and W4 at the A5 source 1 board or cables W7 and W8 at the A10 source 2 board W7 W8 and A10 are only available in 4 port models and 2 port models with Option 224 2 Disconnect cables W3 and W4 or cables W7 and W8 dependent on which source board is to be checked at the A7 A8 A12 or A13 50 GHz Doubler bo...

Страница 129: ...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 network analyzer setting 6 If the sign...

Страница 130: ...meter user s guide for instructions on setting the calibration factor 2 If the Receiver Display Figure 4 7 or Figure 4 8 is not on the analyzer screen perform the following Press UTILITY then then then 3 Set the sweep speed for a 10 second sweep Press STIMULUS then Set the time to 10 000 seconds in the Sweep Time box Procedures described in this document are performed with power supplied to the pr...

Страница 131: ... Path For all of the following checks refer to the block diagrams at the end of this chapter and to any of the following that are appropriate 2 Port Configuration Option 200 on page 6 24 Bottom RF Cables Standard 2 Port Configuration Option 200 on page 6 26 2 Port Configuration Option 200 219 on page 6 30 Bottom RF Cables 2 Port Options 200 219 on page 6 32 2 Port Configuration Options 200 219 224...

Страница 132: ...ble at the output of the reference coupler to be checked Options 200 and 400 Port 1 W19 of A29 Port 2 W31 of A32 Port 3 W23 of A30 Port 4 W27 of A31 Options 219 224 419 and 423 Port 1 W81 of A29 Port 2 W93 of A32 Port 3 W85 of A30 Port 4 W89 of A31 2 Using a 5 16 inch torque wrench disconnect the semirigid cable at the reference coupler 3 Connect the spectrum analyzer to the open reference coupler...

Страница 133: ...rs 1 Locate the appropriate semirigid cable at the output of the source step attenuator to be checked Options 219 224 419 and 423 Port 1 W82 of A38 Port 2 W94 of A41 Port 3 W86 of A39 Port 4 W90 of A36 2 Using a 5 16 inch torque wrench disconnect the semirigid cable at the step attenuator 3 Connect the spectrum analyzer to the open step attenuator connector Set the spectrum analyzer to measure a s...

Страница 134: ...ption 200 on page 6 24 Bottom RF Cables Standard 2 Port Configuration Option 200 on page 6 26 2 Port Configuration Option 200 219 on page 6 30 Bottom RF Cables 2 Port Options 200 219 on page 6 32 2 Port Configuration Options 200 219 224 on page 6 44 Bottom RF Cables 2 Port Options 200 219 224 on page 6 46 4 Port Configuration Option 400 on page 6 80 Bottom RF Cables Standard 4 Port Configuration O...

Страница 135: ...ate the following flexible cables at the receiver IF outputs of the mixer brick s 2 port models Receiver A W61 of A27 Receiver R1 W62 of A27 Receiver R2 W63 of A27 Receiver B W64 of A27 4 port models Receiver A W61 of A27 Receiver R1 W62 of A27 Receiver R2 W63 of A27 Receiver B W64 of A27 Receiver C W68 of A28 Use an antistatic work surface and wrist strap to reduce the chance of electrostatic dis...

Страница 136: ...r is appropriate Refer to Removing and Replacing the A27 and A28 Mixer Bricks on page 7 40 If the measured signal is missing on the A B C or D receivers and the analyzer has receiver attenuators continue testing at Checking the A46 A47 A48 and A49 35 dB Receiver Step Attenuators on page 4 46 Checking the A37 Reference Mixer Switch 1 Remove the front panel REF 1 jumper and connect a spectrum analyz...

Страница 137: ...lexer board 2 port models Receiver A W69 Receiver R1 W72 Receiver R2 W73 Receiver B W70 4 port models Receiver A W69 Receiver B W70 Receiver C W72 Receiver D W73 Receiver R W71 2 Disconnect the appropriate 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 notice on page 4 28 The measured...

Страница 138: ...4 48 Keysight N5244A 45A Service Guide Troubleshooting Instrument Block Diagrams Sheet 1 4 Instrument Block Diagrams Sheet 1 Microwave PNA N5244A 45A 2 Port ...

Страница 139: ...61 0 075 to 0 105 0 075 to 0 105 0 075 to 0 105 9 1 0 11261 to 0 15361 0 11261 to 0 15361 0 105 to 0 146 0 105 to 0 146 0 105 to 0 146 10 1 0 15361 to 0 21261 0 15361 to 0 21261 0 146 to 0 205 0 146 to 0 205 0 146 to 0 205 11 1 0 21261 to 0 25761 0 21261 to 0 25761 0 205 to 0 250 0 205 to 0 250 0 205 to 0 250 12 1 0 25761 to 0 40361 0 25761 to 0 40361 0 250 to 0 396 0 250 to 0 396 0 250 to 0 396 1...

Страница 140: ...4 50 Keysight N5244A 45A Service Guide Troubleshooting Instrument Block Diagrams Sheet 2 4 Instrument Block Diagrams Sheet 2 Microwave PNA N5244A 45A 2 Port with Option 029 and H85 ...

Страница 141: ...61 0 053 to 0 075 0 053 to 0 075 0 053 to 0 075 8 1 0 08261 to 0 11261 0 08261 to 0 11261 0 075 to 0 105 0 075 to 0 105 0 075 to 0 105 9 1 0 11261 to 0 15361 0 11261 to 0 15361 0 105 to 0 146 0 105 to 0 146 0 105 to 0 146 10 1 0 15361 to 0 21261 0 15361 to 0 21261 0 146 to 0 205 0 146 to 0 205 0 146 to 0 205 11 1 0 21261 to 0 25761 0 21261 to 0 25761 0 205 to 0 250 0 205 to 0 250 0 205 to 0 250 12...

Страница 142: ...4 52 Keysight N5244A 45A Service Guide Troubleshooting Instrument Block Diagrams Sheet 3 4 Instrument Block Diagrams Sheet 3 Microwave PNA N5244A 45A 4 Port ...

Страница 143: ...8 0 500 to 0 628 0 500 to 0 628 15 1 0 63561 to 1 00761 0 63561 to 1 00761 0 628 to 1 000 0 628 to 1 000 0 628 to 1 000 16 1 1 00761 to 1 50761 1 00761 to 1 50761 1 000 to 1 500 1 000 to 1 500 1 000 to 1 500 17 1 1 50761 to 2 00761 1 50761 to 2 00761 1 500 to 2 000 1 500 to 2 000 1 500 to 2 000 18 1 2 00761 to 3 00761 2 00761 to 3 00761 2 000 to 3 000 2 000 to 3 000 2 000 to 3 000 19 1 3 00761 to ...

Страница 144: ...4 54 Keysight N5244A 45A Service Guide Troubleshooting Instrument Block Diagrams Sheet 4 4 Instrument Block Diagrams Sheet 4 Microwave PNA N5244A 45A 4 Port with Option 029 and H85 ...

Страница 145: ...12 1 0 25761 to 0 40361 0 25761 to 0 40361 0 250 to 0 396 0 250 to 0 396 0 250 to 0 396 13 1 0 40361 to 0 50761 0 40361 to 0 50761 0 396 to 0 500 0 396 to 0 500 0 396 to 0 500 14 1 0 50761 to 0 63561 0 50761 to 0 63561 0 500 to 0 628 0 500 to 0 628 0 500 to 0 628 15 1 0 63561 to 1 00761 0 63561 to 1 00761 0 628 to 1 000 0 628 to 1 000 0 628 to 1 000 16 1 1 00761 to 1 50761 1 00761 to 1 50761 1 000...

Страница 146: ...4 56 Keysight N5244A 45A Service Guide Troubleshooting Instrument Block Diagrams Sheet 4 4 ...

Страница 147: ... at the end of Chapter 4 be available for reference as you read the information in this chapter Some paragraphs of this chapter reference your analyzer s DSP version Click Help About Network Analyzer and note the DSP version shown 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 maj...

Страница 148: ...ontrol page 5 30 Power Supply Group Operation Operation of the power supply assembly group page 5 35 Noise Measurement Group Operation Option H29 Operation of the assemblies associated with the Option H29 noise measurement group page 5 36 Noise Measurement Group Operation Option 029 Operation of the assemblies associated with the Option 029 noise measurement group page 5 39 Section Title Summary o...

Страница 149: ...nder 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 and digitally processed If configured with the optional 2nd sourc...

Страница 150: ... 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 C...

Страница 151: ...e compared mixed with the LO signal in the receiver group For analyzers with DSP version 4 0 the comparison mix produces the 7 606 MHz or 2 535 MHz at frequencies below 53 MHz IF signal For analyzers with DSP version 5 0 the comparison mix produces the 7 438 MHz or 0 826 MHz at frequencies below 53 MHz IF signal The incident signal output power is leveled by an internal automatic leveling control ...

Страница 152: ... are converted to digital information by the digital processing group Refer to Receiver Group Operation on page 5 25 Digital Processor and Digital Control Group The digital processor and digital control group are divided into a front panel group and a data acquisition and processing group The front panel group provides communication to the network analyzer The data acquisition and processing group...

Страница 153: ... Table 5 3 on page 5 10 lists the L O harmonic number the synthesizer frequencies A4 A15 and A17 the main source frequency A5 and A10 and the doubler frequencies A7 A8 A12 and A13 within the analyzer for each band This table is referred to throughout this chapter and also appears on the overall block diagram at the end of Chapter 4 Troubleshooting The A14 frequency reference board produces a const...

Страница 154: ...l For analyzers with DSP version 4 0 the IF signal is 7 606 MHz or 2 535 MHz For analyzers with DSP version 5 0 the IF signal is 7 438 MHz or 0 826 MHz The A4 A15 and A17 13 5 GHz synthesizer boards each contain their own phase lock circuitry The A15 board produces an independently phase locked LO signal while the A4 and A17 boards produce independently phase locked test signals This makes it poss...

Страница 155: ...Keysight N5244A 45A Service Guide 5 9 Theory of Operation Synthesized Source Group Operation Figure 5 3 Source Group ...

Страница 156: ...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 8 1 0 08261 to 0 11261 0 08261 to 0 11261 0 075 to 0 105 0 075 to 0 105 0 075 to 0 105 9 1 0 11261 to 0 15361 0 11261 to 0 15361 0 105 to 0 146 0 105 to 0 146 0 105 to 0 146 10 1 0 15361 to 0 21261 0 15361 to 0 21261 0 146 to 0 205 0 146 to 0 205 0 146 to 0 205 11 1 0 21261 to 0 257...

Страница 157: ...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 to 10 664 8 500 to 10 664 26 1 10 67161 to 12 00761 10 67161 to 12 00761 10 664 to 12 000 10 664 to 12 000 10 664 to 12 000 27 1 12 00761 to 12 80761 12 00761 to 12 80761 12 000 to 12 800 12 000 to 12 800 12 000 to 12 800 28 1 12 80761 to 13 51761 12 80761 to 13 51761 12 800 to 13 510 12 800 to 13 510 12 800 to 1...

Страница 158: ...250 to 13 504 13 250 to 13 504 26 500 to 27 008 37 3 9 00520 to 10 66920 9 00520 to 10 66920 6 752 to 8 000 13 504 to 16 000 27 008 to 32 000 38 3 10 66920 to 12 16920 10 66920 to 12 16920 8 000 to 9 125 16 000 to 18 250 32 000 to 36 500 39 3 12 16920 to 13 50254 12 16920 to 13 50254 9 125 to 10 125 18 250 to 20 250 36 500 to 40 500 40 3 6 75127 to 7 11060 13 50254 to 14 22120 10 125 to 10 664 20 ...

Страница 159: ...tput of the A4 and A17 13 5 GHz synthesizer boards the source synthesizers For analyzers with DSP version 4 0 the frequency value is 7 606 MHz For analyzers with DSP version 5 0 the frequency value is 7 438 MHz This is because the output of the A15 13 5 GHz synthesizer board is routed through the A25 LO multiplier amplifier 26 5 board to the A27 and A28 mixer bricks where they are mixed with the t...

Страница 160: ...output in bands 20 31 at a frequency range of 3 2 19 GHz for use with an external test set This output is terminated with a 50 ohm load on the A8 A12 and A13 doubler boards The companion signal EXT TEST SET DRIVE LO is output from the A27 mixer brick Refer to A27 and A28 Mixer Bricks on page 5 25 A25 Multiplier Amplifier 26 5 Board HMA26 5 In bands 2 28 and 36 39 the synthesized LO input is filter...

Страница 161: ...witches back to its internal frequency reference 10 MHz REF OUTPUT A BNC connector that allows a 10 MHz reference signal produced by the A14 frequency reference board to be output for use in phase locking external test equipment TEST SET I O A DB 25 female connector that is used to control external test sets The external test set bus consists of 13 multiplexed address and data lines three control ...

Страница 162: ... 0 V ground reference 8 LAS TTL out active low address strobe 1 μs min 9 11 AD4 AD2 TTL I O address and latched data 12 GND 0 V ground reference 13 Interrupt In TTL in low level 10 μs min aborts sweep 14 22 V 22 Vdc 100 mA max 15 16 SEL1 2 TTL out test set select bits 1 2 tied to 0 V 17 AD11 TTL I O address and latched data 18 SEL3 TTL out test set select bit 3 tied to 0 V 19 21 AD7 5 TTL I O addr...

Страница 163: ...ed 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 ms min 32 No connect Not used 33 Pass Fail TTL out latched indicates pass fail programmable polarity 34 5 V 5 Vd...

Страница 164: ...Hz 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 Rin 1 M ohm BW 1 MHz ADC conversion time 1 us typical 8 AnalogIn2 Analog input 10 V 1 22 mV typical resolution Ri...

Страница 165: ...s and A54 Combiner Optional Configurable Test Set The configurable test set is included in 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 pat...

Страница 166: ...on 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 connects to SOURCE OUT While increasing forward S21 dynamic range the reverse S12 dynamic range is degraded by the same amount A29 A32 Reference Couplers The source incident signals from the A5 and A10 26 5 GHz sources are sent t...

Страница 167: ... Theory 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 increases for frequencies below 500 MHz ...

Страница 168: ...5 22 Keysight N5244A 45A Service Guide Theory of Operation Signal Separation Group Operation 5 Figure 5 4 4 Port Signal Separation Group ...

Страница 169: ...Keysight N5244A 45A Service Guide 5 23 Theory of Operation Signal Separation Group Operation Figure 5 5 2 Port Signal Separation Group ...

Страница 170: ...he A21 CPU board The bias tees are to provide DC biasing for the DUT A50 A53 Mechanical Switches and A54 Combiner Optional On 4 port models with Option 423 a mechanical switch is placed in the signal path of each test port between the A5 and A10 26 5 GHz sources and the A29 A32 reference couplers On 2 port models with Option 224 a mechanical switch is placed in the signal path of each test port be...

Страница 171: ...enuators 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 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...

Страница 172: ...minated A24 IF Multiplexer Board This assembly provides pulse modulation capability and routes the IF signal out through the 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 is selected from R1 R2 R3 and R4 to be sent on to the A16 SPAM On 2 port mo...

Страница 173: ... 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 page 5 30 for more information on signa...

Страница 174: ...5 28 Keysight N5244A 45A Service Guide Theory of Operation Receiver Group Operation 5 Figure 5 6 4 Port Receiver Group ...

Страница 175: ...Keysight N5244A 45A Service Guide 5 29 Theory of Operation Receiver Group Operation Figure 5 7 2 Port Receiver Group ...

Страница 176: ...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 31 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 A18 System Motherboard Data...

Страница 177: ...Keysight N5244A 45A Service Guide 5 31 Theory of Operation Digital Processing and Digital Control Group Operation Figure 5 8 Digital Processing and Digital Control Group ...

Страница 178: ... 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 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 a 10 inch LCD with...

Страница 179: ... 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 CPU Board The A21 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...

Страница 180: ...te drive assembly 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 system and firmware for the network analyzer is stored on the A55 hard disk drive USB x4 Four universal serial bus USB jacks industry standard 4 pin connectors GPIB 0 Controller A 24 pin female t...

Страница 181: ...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...

Страница 182: ... the switch allows both the source incident signal and the noise incident signal from the DUT to simultaneously pass through to the A59 Noise Downconverter A58 Test Port 2 Option H29 Bridge The A58 bridge is placed in the Port 2 source path When the PNA X is switched into noise figure measurement mode the noise incident signal from the DUT passes through the A58 bridge before being sent to the A55...

Страница 183: ...ise receiver board the IF noise signals from the A59 noise downconverter are further amplified and filtered before being sent to ADC for sampling The 10 MHz 6 GHz noise signals that passed through the A59 noise downconverter are amplified filtered and mixed with the LO synthesized signal to produce IF noise signals These are filtered and sent to the ADC for sampling In the ADC the signals are proc...

Страница 184: ...5 38 Keysight N5244A 45A Service Guide Theory of Operation Noise Measurement Group Operation Option H29 5 Figure 5 9 Noise Measurement Group Option H29 ...

Страница 185: ...ected during subsequent noise figure measurements A57 Test Port 2 Option 029 Switch The A57 bypass switch is placed in the Port 2 source path allowing switching between normal test mode configuration and noise figure measurement mode When the PNA X is switched into noise figure measurement mode the switch allows both the source incident signal and the noise incident signal from the DUT to simultan...

Страница 186: ...ltered before being sent to ADC for sampling The 10 MHz 6 GHz noise signals that passed through the A59 noise downconverter are amplified filtered and mixed with the LO synthesized signal to produce IF noise signals These are filtered and sent to the ADC for sampling In the ADC the signals are processed and converted to digital form at the sampling rate of 40 MHz The digitized data is then sent to...

Страница 187: ...Keysight N5244A 45A Service Guide 5 41 Theory of Operation Noise Measurement Group Operation Option 029 Figure 5 10 Noise Measurement Group Option 029 ...

Страница 188: ...5 42 Keysight N5244A 45A Service Guide Theory of Operation Noise Measurement Group Operation Option 029 5 ...

Страница 189: ... 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 referen...

Страница 190: ...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...

Страница 191: ...r that 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 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 S...

Страница 192: ...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 ...

Страница 193: ...Keysight N5244A 45A Service Guide 6 5 Replaceable Parts Rebuilt Exchange Assemblies Figure 6 1 Module Exchange Procedure ...

Страница 194: ...or Description Location A1 Front panel interface board Front Panel Assembly Back Side All Options on page 6 13 A2 USB board A3 Display assembly A4 13 5 GHz source 1 synthesizer board Top Assemblies and Cables All Options on page 6 17 A5 26 5 GHz source board 1 A6 Not used A7 Doubler 1 board A8 Doubler 2 board A9 Noise board A10 26 5 GHz source board 2 A11 Not used A12 Doubler 3 board A13 Doubler 4...

Страница 195: ...r switch A38 Port 1 source step attenuator Your option set determines which assemblies are in your PNA Refer to Bottom Assemblies and Cables by Option Set in Table 6 2 on page 6 8 A39 Port 3 source step attenuator A40 Port 4 source step attenuator A41 Port 2 source step attenuator A42 Port 1 bias tee A43 Port 3 bias tee A44 Port 4 bias tee A45 Port 2 bias tee A46 Port 1 receiver step attenuator A4...

Страница 196: ...00 219 on page 6 30 2 Port Configuration Option 200 219 H85 on page 6 37 2 Port Configuration Options 200 219 224 on page 6 44 2 Port Configuration Options 200 219 224 029 on page 6 52 2 Port Configuration Options 200 219 224 H85 on page 6 63 2 Port Configuration Options 200 219 224 H85 029 on page 6 70 4 Port Configuration Option 400 on page 6 80 4 Port Configuration Options 400 419 on page 6 88 ...

Страница 197: ...l Hardware and Miscellaneous Parts All Options on page 6 176 External Hardware and Miscellaneous Parts All Options on page 6 178 Miscellaneous Service Tools on page 6 180 Documentation on page 6 180 GPIB Cables GPIB Adapter on page 6 180 Fuses Battery on page 6 181 Analyzer Accessories on page 6 181 USB Accessories on page 6 181 ESD Supplies on page 6 181 Rack Mount Kits and Handle Kits on page 6 ...

Страница 198: ...6 10 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 This page intentionally left blank ...

Страница 199: ... Rack Mount Kits and Handle Kits on page 6 181 for part numbers of complete rack mount kits 5041 9691 2 Trim strip filler For analyzers with handles N5242 80005 1 Keypad overlay N5242 80001 1 Front panel overlay 2 port Options 200 and 219 N5245 80005 Front panel overlay 2 port Option 224 N5242 80014 Front panel overlay 2 port Options 219 with H85 N5245 80013 Front panel overlay 2 port Options 224 ...

Страница 200: ...6 12 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 2 Front Panel Assembly Front Side All Options ...

Страница 201: ...6 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 44...

Страница 202: ...5242 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 p...

Страница 203: ...Keysight N5244A 45A Service Guide 6 15 Replaceable Parts Replaceable Parts Listings Figure 6 3 Front Panel Assembly Back Side All Options Figure 6 4 A3 Display Assembly with Old LCD Display 2090 0883 ...

Страница 204: ...6 16 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 5 A3 Display Assembly with New LCD Display 2090 1036 Flex Cable ...

Страница 205: ... SG US5201 and above If you have an analyzer whose serial number is within this range refer to the following table If you have an analyzer whose serial number is prefixed MY SG US5150 and below you must use the previous version of hardware rather than the redesigned hardware Both versions of the top assemblies hardware are included in the following table Be very careful to use the appropriate hard...

Страница 206: ...e board 5150 and below N5240 60061 Was N5240 60042 A15 5201 and above N5240 60074 Was N5242 60150 1 13 5 GHz LO synthesizer board 5150 and below N5240 60076b Was N5242 60166 or N5230 60002 A16 5201 and above N5240 60077 Was N5240 60056 1 Signal Processing ADC Module SPAM board N5240 60077 and N5240 60078 are SPAM 5 boards The N5240 60056 is a SPAM 5 all of the other part numbers are SPAM 4 boards ...

Страница 207: ...you must replace ALL of the other N5230 60002 boards To help lower the price for customers who must replace three synthesizer boards in their PNA X Keysight provides kit N5242 60168 containing three N5240 60076 boards at a discounted price Any spare boards may be retained for future repairs You must also upgrade your PNA firmware to rev A09 33xx or above Download PNA firmware at http na support ke...

Страница 208: ...6 20 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 6 Top Assemblies All Options ...

Страница 209: ...t 3 doubler to A13 port 4 doubler On 2 port models W10 is included only with Option 224 W11 SR N5245 20036 1 A7 port 1 doubler to W12 or to W105 Option 224 and 423 W13 SR N5245 20036 1 A12 port 3 doubler to W14 or W111 Option 224 and 423 On 2 port models W13 is included only with Option 224 W15 SR N5245 20036 1 A13 port 4 doubler to W16 or W115 Option 423 On 2 port models W15 is included only with...

Страница 210: ...cy reference board J2 W129 F N5247 60023 1 A24 IF multiplexer board P603 to A16 SPAM board J2 SPAM 5 2 port W130 F N5247 60024 1 A24 IF multiplexer board P203 to A16 SPAM board J5 SPAM 5 2 port W171 SR N5245 20144 1 A59 noise downconverter to A9 noise board W172 F N5245 60020 1 A59 noise downconverter assembly J3 to A9 noise board J1 W173 SR N5245 20145 1 A59 noise downconverter to A9 noise board ...

Страница 211: ...vice Guide 6 23 Replaceable Parts Replaceable Parts Listings Figure 6 7 Top Cables All Cables All Options SPAM 5 boards use W129 W130 for 2 ports If your instrument has a SPAM 4 board W70 W72 apply to 2 Port and 4 Port models ...

Страница 212: ...760 Was 5086 7658 2 Test port 1 reference coupler Test port 2 reference coupler A33 A36 5087 7793 Was 5087 7724 2 Test port 1 coupler Test port 2 coupler A37 5087 7759 Was 5087 7271 1 Reference mixer switch N5240 60058 Was N5240 60051 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 ...

Страница 213: ...Keysight N5244A 45A Service Guide 6 25 Replaceable Parts Replaceable Parts Listings Figure 6 8 Bottom Assemblies Standard 2 Port Configuration Option 200 ...

Страница 214: ...5 Was N5245 20104 6 Front panel jumper W37 SR N5245 20041 1 Port 1 RCVR A IN to A27 mixer brick A W40 SR N5245 20042 1 Front panel port 2 RCVR B IN to A27 mixer brick B W41 SR N5245 20006 1 A37 ref mixer switch to front panel REF 1 SOURCE OUT W42 SR N5245 20007 1 REF 1 RCVR R1 IN to A37 reference mixer switch W43 SR N5245 20009 1 A37 reference mixer switch to A27 mixer brick R1 W46 SR N5245 20011 ...

Страница 215: ...eplaceable Parts Replaceable Parts Listings Figure 6 9 Bottom RF Cables Standard 2 Port Configuration Option 200 SPAM 5 boards use W129 W130 for 2 ports not shown If your instrument has a SPAM 4 board W70 W72 apply to 2 Port and 4 Port models ...

Страница 216: ...d J222 to ports 2 4 LED board J1 24R N5230 60014 Was N5242 60011 A23 test set motherboard J209 to A25 HMA26 5 J1 100R N5242 60004 A18 system motherboard J1 to A23 test set motherboard J1 to A24 IF multiplexer board J1 25R E4410 60160 A18 system motherboard J13 to A23 test set motherboard J545 36R 8121 0834 Rear panel HANDLER I O to A23 test set motherboard J400 a nR n wires in a ribbon flat cable ...

Страница 217: ...Keysight N5244A 45A Service Guide 6 29 Replaceable Parts Replaceable Parts Listings Figure 6 10 Bottom Ribbon Cables and Wire Harnesses Standard 2 Port Configuration Option 200 ...

Страница 218: ...37 5087 7759 Was 5087 7271 1 Reference mixer switch A38 A41 33325 60016 Was 33325 60012 2 Test port 1 source attenuator Test port 2 source attenuator A42 A45 5087 7789 Was 5087 7331 2 Test port 1 bias tee includes wire harness Test port 2 bias tee includes wire harness A46 A49 33325 60017 Was 33325 60011 2 Port 1 receiver attenuator Port 2 receiver attenuator N5240 60058 Was N5240 60051 2 Front pa...

Страница 219: ...Keysight N5244A 45A Service Guide 6 31 Replaceable Parts Replaceable Parts Listings Figure 6 11 Bottom Assemblies 2 Port Options 200 219 ...

Страница 220: ...SR Refer to Top Cables All Cables All Options on page 6 21 W55 SR N5245 20102 1 A7 port 1 doubler to W56 W56 SR N5245 20103 1 W55 to rear panel EXT TSET DRIVE RF OUT J6 W57 SR N5245 20012 1 A27 mixer brick to EXT TSET DRIVE LO OUT J5 W61 F N5242 60017 1 A27 mixer brick A to A24 IF multiplexer P1 W62 F N5242 60025 1 A27 mixer brick R1 to A24 IF multiplexer P601 W63 F N5242 60026 1 A27 mixer brick R...

Страница 221: ... Port 1 RCVR A IN to A46 port 1 receiver attenuator W98 SR N5245 20056 1 A46 port 1 receiver attenuator to A27 mixer brick A W103 SR N5245 20055 1 Port 2 RCVR B IN to A49 port 2 receiver attenuator W104 SR N5245 20057 1 A49 port 2 receiver attenuator to A27 mixer brick B a SR semirigid coaxial cable F flexible coaxial cable Reference Designator Typea Part Number Qty Description ...

Страница 222: ...Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 12 Bottom RF Cables 2 Port Options 200 219 SPAM 5 boards use W129 W130 for 2 ports not shown If your instrument has a SPAM 4 board W70 W72 apply to 2 Port and 4 Port models ...

Страница 223: ... 4 LED board J1 2W P O bias tee A23 test set motherboard J542 to A45 port 2 bias tee 16R N5245 60006 A23 test set motherboard J546 to A41 port 2 source attenuator 10R N5245 60026 Was 8121 0982 or N5242 60007 A23 test set motherboard J208 to A49 port 2 receiver attenuator 24R N5230 60014 Was N5242 60011 A23 test set motherboard J209 to A25 HMA26 5 J1 100R N5242 60004 A18 system motherboard J1 to A2...

Страница 224: ...6 36 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 13 Bottom Ribbon Cables and Wire Harnesses 2 Port Options 200 219 ...

Страница 225: ...s 5087 7724 2 Test port 1 coupler Test port 2 coupler A37 5087 7759 Was 5087 7271 1 Reference mixer switch A38 A41 33325 60016 Was 33325 60012 2 Test port 1 source attenuator Test port 2 source attenuator A46 A49 33325 60017 Was 33325 60011 2 Port 1 receiver attenuator Port 2 receiver attenuator N5240 60058 Was N5240 60051 2 Front panel LED board a Part numbers in italic typeface are for rebuilt e...

Страница 226: ...6 38 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 14 Bottom Assemblies 2 Port Options 200 219 H85 ...

Страница 227: ...ference mixer switch W43 SR N5245 20009 1 A37 reference mixer switch to A27 mixer brick R1 W47 SR N5245 20119 1 A27 mixer brick R2 to front panel REF 2 RCVR R2 IN W51 SR Refer to Top Cables All Cables All Options on page 6 21 W55 SR 1 A7 port 1 doubler to W56 W56 SR N5245 20103 1 W55 to rear panel EXT TSET DRIVE RF OUT J6 W57 SR N5245 20012 1 A27 mixer brick to EXT TSET DRIVE LO OUT J5 W61 F N5242...

Страница 228: ...uator to A27 mixer brick A W103 SR N5245 20055 1 Port 2 RCVR B IN to A49 port 2 receiver attenuator W104 SR N5245 20057 1 A49 port 2 receiver attenuator to A27 mixer brick B W80 SR N5245 20048 1 A25 HMA26 5 to A27 mixer brick a SR semirigid coaxial cable F flexible coaxial cable Reference Designator Typea Part Number Qty Description ...

Страница 229: ...6 41 Replaceable Parts Replaceable Parts Listings Figure 6 15 Bottom RF Cables 2 Port Options 200 219 H85 SPAM 5 boards use W129 W130 for 2 ports not shown If your instrument has a SPAM 4 board W70 W72 apply to 2 Port and 4 Port models ...

Страница 230: ...ts 2 4 LED board J1 16R N5245 60006 A23 test set motherboard J546 to A41 port 2 source attenuator 10R N5245 60026 Was 8121 0982 or N5242 60007 A23 test set motherboard J208 to A49 port 2 receiver attenuator 24R N5230 60014 Was N5242 60011 A23 test set motherboard J209 to A25 HMA26 5 J1 100R N5242 60004 A18 system motherboard J1 to A23 test set motherboard J1 to A24 IF multiplexer board J1 25R E441...

Страница 231: ...eable Parts Replaceable Parts Listings Figure 6 16 Bottom Ribbon Cables and Wire Harnesses 2 Port Options 200 219 H85 SPAM 5 boards use W129 W130 for 2 ports not shown If your instrument has a SPAM 4 board W70 W72 apply to 2 Port and 4 Port models ...

Страница 232: ...1 source attenuator Test port 2 source attenuator A42 A45 5087 7789 Was 5087 7331 2 Test port 1 bias tee includes wire harness Test port 2 bias tee includes wire harness A46 A49 33325 60017 Was 33325 60011 2 Port 1 receiver attenuator Port 2 receiver attenuator A50 A51 A53 N1811 60031 Was N1811 60009 3 Port 1 mechanical switch SRC2 OUT1 mechanical switch Port 2 mechanical switch A54 11667 60021 Wa...

Страница 233: ...Keysight N5244A 45A Service Guide 6 45 Replaceable Parts Replaceable Parts Listings Figure 6 17 Bottom Assemblies 2 Port Options 200 219 224 ...

Страница 234: ...5 to rear panel EXT TSET DRIVE RF OUT J6 W57 SR N5245 20012 1 A27 mixer brick to EXT TSET DRIVE LO OUT J5 W61 F N5242 60017 1 A27 mixer brick A to A24 IF multiplexer P1 W62 F N5242 60025 1 A27 mixer brick R1 to A24 IF multiplexer P601 W63 F N5242 60026 1 A27 mixer brick R2 to A24 IF multiplexer P801 W64 F N5242 60018 1 A27 mixer brick B to A24 IF multiplexer P201 W69 73 F Refer to Top Cables All C...

Страница 235: ...067 1 A50 port 1 mechanical switch to A54 combiner W111 SR N5245 20058 1 A51 SRC2 OUT1 mechanical switch mechanical switch to W13 W113 SR N5245 20069 1 A51 SRC2 OUT1 mechanical switch to PORT 3 SW SRC OUT J8 W114 SR N5245 20070 1 Rear panel PORT 3 SW TSET IN J7 to A51 SRC2 OUT1 mechanical switch W119 SR N5245 20063 1 A53 port 2 mechanical switch to W17 W120 SR N5245 20062 1 A53 port 2 mechanical s...

Страница 236: ...ide Replaceable Parts Replaceable Parts Listings 6 Figure 6 18 Bottom RF Cables 2 Port Options 200 219 224 SPAM 5 boards use W129 W130 for 2 ports not shown If your instrument has a SPAM 4 board W70 W72 apply to 2 Port and 4 Port models ...

Страница 237: ... 1 3 LED board J1 20R N5247 60015 Was N5245 60008 A23 test set motherboard J551 to A27 mixer brick 1 J52 2W P O bias tee A23 test set motherboard J541 to A42 port 1 bias tee 3W N5225 60001b Was N5242 60009 A23 test set motherboard J222 to ports 2 4 LED board J1 2W P O bias tee A23 test set motherboard J542 to A45 port 2 bias tee 4W P O A53 port 2 mechanical switch to A23 test set motherboard J102 ...

Страница 238: ...rd wire harnesses with a current version N5225 60001 both wire harnesses must be replaced You must also replace the old test set front plate with a current version 2 port N5224 00004 or 4 port N5224 00005 While replacing the test set front plate both LED boards must be removed and reinstalled after being rotated180 degrees ...

Страница 239: ...Keysight N5244A 45A Service Guide 6 51 Replaceable Parts Replaceable Parts Listings Figure 6 19 Bottom Ribbon Cables and Wire Harnesses 2 Port Options 200 219 224 ...

Страница 240: ... Was 5087 7724 2 Test port 1 coupler Test port 2 coupler A37 5087 7759 Was 5087 7271 1 Reference mixer switch A38 A41 33325 60016 Was 33325 60012 2 Test port 1 source attenuator Test port 2 source attenuator A42 A45 5087 7789 Was 5087 7331 2 Test port 1 bias tee includes wire harness Test port 2 bias tee includes wire harness A46 A49 33325 60017 Was 33325 60011 2 Port 1 receiver attenuator Port 2 ...

Страница 241: ...lies 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 attached to 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 ...

Страница 242: ...6 54 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 20 Bottom Assemblies 2 Port Options 200 219 224 029 ...

Страница 243: ...litter W53 SR N5245 20023 1 A26 splitter to A27 mixer brick W55 SR N5245 20102 1 A7 port 1 doubler to W56 W56 SR N5245 20103 1 W55 to rear panel EXT TSET DRIVE RF OUT J6 W57 SR N5245 20012 1 A27 mixer brick to EXT TSET DRIVE LO OUT J5 W61 F N5242 60017 1 A27 mixer brick A to A24 IF multiplexer P1 W62 F N5242 60025 1 A27 mixer brick R1 to A24 IF multiplexer P601 W63 F N5242 60026 1 A27 mixer brick ...

Страница 244: ...h to W17 W120 SR N5245 20062 1 A53 port 2 mechanical switch to A32 port 2 reference coupler W121 SR N5245 20071 1 A53 port 2 mechanical switch to PORT 2 SW SRC OUT J2 W122 SR N5245 20072 1 A53 port 2 mechanical switch to PORT 2 TSET IN J1 W123 SR N5245 20155 Was N5245 20104 3 Rear panel jumper W127 SR N5245 20078 1 Front panel SRC 2 OUT 1 to A51 SRC2 OUT1 mechanical switch W128 SR N5245 20053 1 Fr...

Страница 245: ...de 6 57 Replaceable Parts Replaceable Parts Listings W171 173 175 SR Refer to Top Cables All Cables All Options on page 6 21 a SR semirigid coaxial cable F flexible coaxial cable Reference Designator Typea Part Number Qty Description ...

Страница 246: ...e Replaceable Parts Replaceable Parts Listings 6 Figure 6 21 Bottom RF Cables 2 Port Options 200 219 224 029 SPAM 5 boards use W129 W130 for 2 ports not shown If your instrument has a SPAM 4 board W70 W72 apply to 2 Port and 4 Port models ...

Страница 247: ...Keysight N5244A 45A Service Guide 6 59 Replaceable Parts Replaceable Parts Listings This page intentionally left blank ...

Страница 248: ...42 60007 A23 test set motherboard J205 to A46 port 1 receiver attenuator 16R N5245 60006 A23 test set motherboard J549 to A38 port 1 source attenuator 4W P O A56 port 1 noise bypass switch to A59 noise downconverter J42 port 1 Refer to 2 Port Configuration Options 200 219 224 029 on page 6 52 2W P O bias tee A23 test set motherboard J541 to A42 port 1 bias tee 3W N5225 60001b A23 test set motherbo...

Страница 249: ...21 0834 Rear panel HANDLER I O to A23 test set motherboard J400 a nR n wires in a ribbon flat cable nW n wires in a wire harness b If you are replacing an old LED board wire harnesses with a current version N5225 60001 both wire harnesses must be replaced You must also replace the old test set front plate with a current version 2 port N5224 00004 or 4 port N5224 00005 While replacing the test set ...

Страница 250: ...6 62 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 22 Bottom Ribbon Cables and Wire Harnesses 2 Port Options 200 219 224 029 ...

Страница 251: ...e mixer switch A38 A41 33325 60016 Was 33325 60012 2 Test port 1 source attenuator Test port 2 source attenuator A46 A49 33325 60017 Was 33325 60011 2 Port 1 receiver attenuator Port 2 receiver attenuator A50 A51 A53 N1811 60031 Was N1811 60009 3 Port 1 mechanical switch SRC2 OUT1 mechanical switch Port 2 mechanical switch A54 11667 60021 Was N5532 60002 1 Combiner N5240 60058 Was N5240 60051 2 Fr...

Страница 252: ...6 64 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 23 Bottom Assemblies 2 Port Options 200 219 224 H85 ...

Страница 253: ...fer to Top Cables All Cables All Options on page 6 21 W55 SR N5245 20102 1 A7 port 1 doubler to W56 W56 SR N5245 20103 1 W55 to rear panel EXT TSET DRIVE RF OUT J6 W57 SR N5245 20012 1 A27 mixer brick to EXT TSET DRIVE LO OUT J5 W61 F N5242 60017 1 A27 mixer brick A to A24 IF multiplexer P1 W62 F N5242 60025 1 A27 mixer brick R1 to A24 IF multiplexer P601 W63 F N5242 60026 1 A27 mixer brick R2 to ...

Страница 254: ... A51 SRC2 OUT1 mechanical switch mechanical switch to W13 W113 SR N5245 20069 1 A51 SRC2 OUT1 mechanical switch to PORT 3 SW SRC OUT J8 W114 SR N5245 20070 1 Rear panel PORT 3 SW TSET IN J7 to A51 SRC2 OUT1 mechanical switch W119 SR N5245 20063 1 A53 port 2 mechanical switch to W17 W120 SR N5245 20062 1 A53 port 2 mechanical switch to A32 port 2 reference coupler W121 SR N5245 20071 1 A53 port 2 m...

Страница 255: ...67 Replaceable Parts Replaceable Parts Listings Figure 6 24 Bottom RF Cables 2 Port Options 200 219 224 H85 SPAM 5 boards use W129 W130 for 2 ports not shown If your instrument has a SPAM 4 board W70 W72 apply to 2 Port and 4 Port models ...

Страница 256: ...W N5225 60001b Was N5242 60009 A23 test set motherboard J222 to ports 2 4 LED board J1 4W P O A53 port 2 mechanical switch to A23 test set motherboard J102 Refer to 2 Port Configuration Options 200 219 224 on page 6 44 16R N5245 60006 A23 test set motherboard J546 to A41 port 2 source attenuator 10R N5245 60026 Was 8121 0982 or N5242 60007 A23 test set motherboard J208 to A49 port 2 receiver atten...

Страница 257: ...Keysight N5244A 45A Service Guide 6 69 Replaceable Parts Replaceable Parts Listings Figure 6 25 Bottom Ribbon Cables and Wire Harnesses 2 Port Options 200 219 224 H85 ...

Страница 258: ...87 7793 Was 5087 7724 2 Test port 1 coupler Test port 2 coupler A37 5087 7759 Was 5087 7271 1 Reference mixer switch A38 A41 33325 60016 Was 33325 60012 2 Test port 1 source attenuator Test port 2 source attenuator A46 A49 33325 60017 Was 33325 60011 2 Port 1 receiver attenuator Port 2 receiver attenuator A50 A51 A53 N1811 60031 Was N1811 60009 3 Port 1 mechanical switch SRC2 OUT1 mechanical switc...

Страница 259: ...new 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 connectors removed If your instrument contains a N5242 60031 cable remove it from your instrument ...

Страница 260: ...6 72 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 26 Bottom Assemblies 2 Port Options 200 219 224 H85 029 ...

Страница 261: ...t panel REF 2 RCVR R2 IN W51 SR Refer to Top Cables All Cables All Options on page 6 21 W52 SR N5245 20013 1 A25 HMA26 5 to A26 splitter W53 SR N5245 20023 1 A26 splitter to A27 mixer brick W55 SR N5245 20102 1 A7 port 1 doubler to W56 W56 SR N5245 20103 1 W55 to rear panel EXT TSET DRIVE RF OUT J6 W57 SR N5245 20012 1 A27 mixer brick to EXT TSET DRIVE LO OUT J5 W61 F N5242 60017 1 A27 mixer brick...

Страница 262: ...to A32 port 2 reference coupler W121 SR N5245 20071 1 A53 port 2 mechanical switch to PORT 2 SW SRC OUT J2 W122 SR N5245 20072 1 A53 port 2 mechanical switch to PORT 2 TSET IN J1 W123 SR N5245 20155 Was N5245 20104 3 Rear panel jumper W127 SR N5245 20078 1 Front panel SRC 2 OUT 1 to A51 SRC2 OUT1 mechanical switch W128 SR N5245 20053 1 Front panel SRC 2 OUT 2 to W15 W161 SR N5245 20151 1 A38 port ...

Страница 263: ... Replaceable Parts Replaceable Parts Listings Figure 6 27 Bottom RF Cables 2 Port Options 200 219 224 H85 029 SPAM 5 boards use W129 W130 for 2 ports not shown If your instrument has a SPAM 4 board W70 W72 apply to 2 Port and 4 Port models ...

Страница 264: ...6 76 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 This page intentionally left blank ...

Страница 265: ...45 60026 Was 8121 0982 or N5242 600077 A23 test set motherboard J205 to A46 port 1 receiver attenuator 16R N5245 60006 A23 test set motherboard J549 to A38 port 1 source attenuator 4W P O A56 port 1 noise bypass switch to A59 noise downconverter J42 port 1 Refer to 2 Port Configuration Options 200 219 224 029 on page 6 52 3W N5225 60001b A23 test set motherboard J222 to ports 2 4 LED board J1 4W P...

Страница 266: ...test set motherboard J400 a nR n wires in a ribbon flat cable nW n wires in a wire harness b If you are replacing an old LED board wire harnesses with a current version N5225 60001 both wire harnesses must be replaced You must also replace the old test set front plate with a current version 2 port N5224 00004 or 4 port N5224 00005 While replacing the test set front plate both LED boards must be re...

Страница 267: ...Keysight N5244A 45A Service Guide 6 79 Replaceable Parts Replaceable Parts Listings Figure 6 28 Bottom Ribbon Cables and Wire Harnesses 2 Port Options 200 219 224 H85 029 ...

Страница 268: ... Test port 3 reference coupler Test port 4 reference coupler Test port 2 reference coupler A33 A34 A35 A36 5087 7793 Was 5087 7724 4 Test port 1 coupler Test port 3 coupler Test port 4 coupler Test port 2 coupler A37 5087 7759 Was 5087 7271 1 Reference mixer switch A69 08490 60010 1 3 dB pad For A28 mixer brick R4 N5240 60058 Was N5240 60051 2 Front panel LED board a Part numbers in italic typefac...

Страница 269: ...Keysight N5244A 45A Service Guide 6 81 Replaceable Parts Replaceable Parts Listings Figure 6 29 Bottom Assemblies Standard 4 Port Configuration Option 400 ...

Страница 270: ...45 20015 1 A34 port 3 coupler to front panel Port 3 CPLR ARM W27 SR N5245 20052 1 A31 port 4 ref coupler to front panel Port 4 SOURCE OUT W28 SR N5245 20096 1 Port 4 CPLR THRU to A35 port 4 coupler W29 SR N5245 20017 1 A31 port 4 ref coupler to front panel REF 4 SOURCE OUT W30 SR N5245 20018 1 A35 port 4 coupler to front panel port 4 CPLR ARM W31 SR N5245 20040 1 A32 port 2 ref coupler to front pa...

Страница 271: ...20012 1 A27 mixer brick to EXT TSET DRIVE LO OUT J5 W58 SR N5245 20095 1 A28 mixer brick to 50 ohm load 1250 4261 Was 1810 0118 W61 F N5242 60017 1 A27 mixer brick A to A24 IF multiplexer P1 W62 F N5242 60021 1 A27 mixer brick R1 to A24 IF multiplexer P411 W63 F N5242 60022 1 A27 mixer brick R2 to A24 IF multiplexer P412 W64 F N5242 60018 1 A27 mixer brick B to A24 IF multiplexer P201 W65 F N5242 ...

Страница 272: ...6 84 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 This page intentionally left blank ...

Страница 273: ...Keysight N5244A 45A Service Guide 6 85 Replaceable Parts Replaceable Parts Listings Figure 6 30 Bottom RF Cables Standard 4 Port Configuration Option 400 ...

Страница 274: ...001b Was N5242 60009 A23 test set motherboard J222 to ports 2 4 LED board J1 24R N5230 60014 Was N5242 60011 A23 test set motherboard J209 to A25 HMA26 5 J1 100R N5242 60004 A18 system motherboard J1 to A23 test set motherboard J1 to A24 IF multiplexer board J1 25R E4410 60160 A18 system motherboard J13 to A23 test set motherboard J545 36R 8121 0834 Rear panel HANDLER I O to A23 test set motherboa...

Страница 275: ...Keysight N5244A 45A Service Guide 6 87 Replaceable Parts Replaceable Parts Listings Figure 6 31 Bottom Ribbon Cables and Wire Harnesses Standard 4 Port Configuration Option 400 ...

Страница 276: ... port 2 reference coupler A33 A34 A35 A36 5087 7793 Was 5087 7724 4 Test port 1 coupler Test port 3 coupler Test port 4 coupler Test port 2 coupler A37 5087 7759 Was 5087 7271 1 Reference mixer switch N5240 60058 Was N5240 60051 2 Front panel LED board A38 A39 A40 A41 33325 60016 Was 33325 60012 4 Test port 1 source attenuator Test port 3 source attenuator Test port 4 source attenuator Test port 2...

Страница 277: ...lies 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 attached to 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 ...

Страница 278: ...6 90 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 32 Bottom Assemblies 4 Port Options 400 419 ...

Страница 279: ...brick R2 W51 SR Refer to Top Cables All Cables All Options on page 6 21 W52 SR N5245 20013 1 A25 HMA26 5 to A26 splitter W53 SR N5245 20023 1 A26 splitter to A27 mixer brick W55 SR N5245 20102 1 A7 port 1 doubler to W56 W56 SR N5245 20103 1 W55 to rear panel EXT TSET DRIVE RF OUT J6 W57 SR N5245 20012 1 A27 mixer brick to EXT TSET DRIVE LO OUT J5 W58 SR N5245 20095 1 A28 mixer brick to 50 ohm load...

Страница 280: ...45 port 2 bias tee to A36 port 2 coupler W97 SR N5245 20054 1 Front panel Port 1 RCVR A IN to A46 port 1 receiver attenuator W98 SR N5245 20056 1 A46 port 1 receiver attenuator to A27 mixer brick A W103 SR N5245 20055 1 Port 2 RCVR B IN to A49 port 2 receiver attenuator W104 SR N5245 20057 1 A49 port 2 receiver attenuator to A27 mixer brick B a SR semirigid coaxial cable F flexible coaxial cable R...

Страница 281: ...Keysight N5244A 45A Service Guide 6 93 Replaceable Parts Replaceable Parts Listings Figure 6 33 Bottom RF Cables 4 Port Options 400 419 Ports 1 and 2 ...

Страница 282: ...ixer brick R4 to A24 IF multiplexer P414 W67 F N5242 60020 1 A28 mixer brick R3 to A24 IF multiplexer P413 W68 F N5242 60023 1 A28 mixer brick C to A24 IF multiplexer P601 W85 SR N5245 20026 1 A30 port 3 reference coupler to A39 port 3 source attenuator W86 SR N5245 20027 1 A39 port 3 source attenuator to front panel Port 3 SOURCE OUT W87 SR N5245 20089 1 Port 3 CPLR THRU to A43 port 3 bias tee W8...

Страница 283: ...Keysight N5244A 45A Service Guide 6 95 Replaceable Parts Replaceable Parts Listings Figure 6 34 Bottom RF Cables 4 Port Options 400 419 Ports 3 and 4 ...

Страница 284: ... port 3 source attenuator 2W P O bias tee A23 test set motherboard J541 to A42 port 1 bias tee 2W P O bias tee A23 test set motherboard J543 to A43 port 3 bias tee 2W P O bias tee A23 test set motherboard J544 to A44 port 4 bias tee 3W N5225 60001b Was N5242 60009 A23 test set motherboard J222 to ports 2 4 LED board J1 2W P O bias tee A23 test set motherboard J542 to A45 port 2 bias tee 16R N5245 ...

Страница 285: ...lat cable nW n wires in a wire harness b If you are replacing an old LED board wire harnesses with a current version N5225 60001 both wire harnesses must be replaced You must also replace the old test set front plate with a current version 2 port N5224 00004 or 4 port N5224 00005 While replacing the test set front plate both LED boards must be removed and reinstalled after being rotated180 degrees...

Страница 286: ...6 98 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 35 Bottom Ribbon Cables and Wire Harnesses 4 Port Options 400 419 ...

Страница 287: ...3 coupler Test port 4 coupler Test port 2 coupler A37 5087 7759 Was 5087 7271 1 Reference mixer switch N5240 60058 Was N5240 60051 2 Front panel LED board A38 A39 A40 A41 33325 60016 Was 33325 60012 4 Test port 1 source attenuator Test port 3 source attenuator Test port 4 source attenuator Test port 2 source attenuator A46 A47 A48 A49 33325 60017 Was 33325 60011 4 Port 1 receiver attenuator Port 3...

Страница 288: ...6 100 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 36 Bottom Assemblies 4 Port Options 400 419 H85 ...

Страница 289: ...eference mixer switch W43 SR N5245 20009 1 A37 reference mixer switch to A27 mixer brick R1 W46 SR N5245 20115 1 REF 2 RCVR R2 IN to A27 mixer brick R2 W51 SR Refer to Top Cables All Cables All Options on page 6 21 W52 SR N5245 20013 1 A25 HMA26 5 to A26 splitter W53 SR N5245 20023 1 A26 splitter to A27 mixer brick W55 SR N5245 20102 1 A7 port 1 doubler to W56 W56 SR N5245 20103 1 W55 to rear pane...

Страница 290: ... Front panel Port 1 RCVR A IN to A46 port 1 receiver attenuator W98 SR N5245 20056 1 A46 port 1 receiver attenuator to A27 mixer brick A W103 SR N5245 20055 1 Port 2 RCVR B IN to A49 port 2 receiver attenuator W104 SR N5245 20057 1 A49 port 2 receiver attenuator to A27 mixer brick B a SR semirigid coaxial cable F flexible coaxial cable Reference Designator Typea Part Number Qty Description ...

Страница 291: ...Keysight N5244A 45A Service Guide 6 103 Replaceable Parts Replaceable Parts Listings Figure 6 37 Bottom RF Cables 4 Port Options 400 419 H85 Ports 1 and 2 ...

Страница 292: ...REF 4 RCVR R4 IN to A69 3 dB pad on A28 mixer brick R4 W54 SR N5245 20022 1 A26 splitter to A28 mixer brick W65 F N5242 60024 1 A28 mixer brick D to A24 IF multiplexer P801 W66 F N5242 60019 1 A28 mixer brick R4 to A24 IF multiplexer P414 W67 F N5242 60020 1 A28 mixer brick R3 to A24 IF multiplexer P413 W68 F N5242 60023 1 A28 mixer brick C to A24 IF multiplexer P601 W85 SR N5245 20026 1 A30 port ...

Страница 293: ...Keysight N5244A 45A Service Guide 6 105 Replaceable Parts Replaceable Parts Listings Figure 6 38 Bottom RF Cables 4 Port Options 400 419 H85 Ports 3 and 4 ...

Страница 294: ...6 A23 test set motherboard J547 to A39 port 3 source attenuator 3W N5225 60001b Was N5242 60009 A23 test set motherboard J222 to ports 2 4 LED board J1 16R N5245 60006 A23 test set motherboard J548 to A40 port 4 source attenuator 10R N5245 60026 Was 8121 0982 or N5242 60007 A23 test set motherboard J207 to A48 port 4 receiver attenuator 10R N5245 60026 Was 8121 0982 or N5242 60007 A23 test set mot...

Страница 295: ...rd wire harnesses with a current version N5225 60001 both wire harnesses must be replaced You must also replace the old test set front plate with a current version 2 port N5224 00004 or 4 port N5224 00005 While replacing the test set front plate both LED boards must be removed and reinstalled after being rotated180 degrees ...

Страница 296: ...6 108 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 39 Bottom Ribbon Cables Wire Harnesses 4 Port Options 400 419 H85 ...

Страница 297: ...87 7793 Was 5087 7724 4 Test port 1 coupler Test port 3 coupler Test port 4 coupler Test port 2 coupler A37 5087 7759 Was 5087 7271 1 Reference mixer switch N5240 60058 Was N5240 60051 2 Front panel LED board A38 A39 A40 A41 33325 60016 Was 33325 60012 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 5087 7789...

Страница 298: ...es 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 attached to 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 Reference Designator Part Numbera Qty Description ...

Страница 299: ...Keysight N5244A 45A Service Guide 6 111 Replaceable Parts Replaceable Parts Listings Figure 6 40 Bottom Assemblies 4 Port Options 400 419 423 ...

Страница 300: ...5 20102 1 A7 port 1 doubler to W56 W56 SR N5245 20103 1 W55 to rear panel EXT TSET DRIVE RF OUT J6 W57 SR N5245 20012 1 A27 mixer brick to EXT TSET DRIVE LO OUT J5 W61 F N5242 60017 1 A27 mixer brick A to A24 IF multiplexer P1 W62 F N5242 60021 1 A27 mixer brick R1 to A24 IF multiplexer P411 W63 F N5242 60022 1 A27 mixer brick R2 to A24 IF multiplexer P412 W64 F N5242 60018 1 A27 mixer brick B to ...

Страница 301: ...itch to PORT 1 SW SRC OUT J11 W108 SR N5245 20094 1 Rear panel PORT 1 COMB THRU IN J10 to A54 combiner W109 SR N5245 20093 1 Rear panel PORT 1 COMB ARM IN J9 to A54 combiner W110 SR N5245 20067 1 A50 port 1 mechanical switch to A54 combiner W119 SR N5245 20063 1 A53 port 2 mechanical switch to W17 W120 SR N5245 20062 1 A53 port 2 mechanical switch to A32 port 2 reference coupler W121 SR N5245 2007...

Страница 302: ...6 114 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 41 Bottom RF Cables 4 Port Options 400 419 423 Ports 1 and 2 ...

Страница 303: ...mixer brick C to A24 IF multiplexer P601 W85 SR N5245 20026 1 A30 port 3 reference coupler to A39 port 3 source attenuator W86 SR N5245 20027 1 A39 port 3 source attenuator to front panel Port 3 SOURCE OUT W87 SR N5245 20089 1 Port 3 CPLR THRU to A43 port 3 bias tee W88 SR N5245 20086 1 A43 port 3 bias tee to A34 port 3 coupler W89 SR N5245 20026 1 A31 port 4 reference coupler to A40 port 4 source...

Страница 304: ...2 port 4 mechanical switch to A31 port 4 reference coupler W117 SR N5245 20092 1 A52 port 4 mechanical switch to PORT 4 SW SRC OUT J4 W118 SR N5245 20091 1 A52 port 4 mechanical switch to PORT 4 SW TSET J3 W123 SR N5245 20155 Was N5245 20104 4 Rear panel jumper a SR semirigid coaxial cable F flexible coaxial cable Reference Designator Typea Part Number Qty Description ...

Страница 305: ...Keysight N5244A 45A Service Guide 6 117 Replaceable Parts Replaceable Parts Listings Figure 6 42 Bottom RF Cables 4 Port Options 400 419 423 Ports 3 and 4 ...

Страница 306: ...23 test set motherboard J205 to A46 port 1 receiver attenuator 16R N5245 60006 A23 test set motherboard J549 to A38 port 1 source attenuator 10R N5245 60026 Was 8121 0982 or N5242 60007 A23 test set motherboard J206 to A47 port 3 receiver attenuator 16R N5245 60006 A23 test set motherboard J547 to A39 port 3 source attenuator 2W P O bias tee A23 test set motherboard J541 to A42 port 1 bias tee 2W ...

Страница 307: ...HMA26 5 J1 100R N5242 60004 A18 system motherboard J1 to A23 test set motherboard J1 to A24 IF multiplexer board J1 25R E4410 60160 A18 system motherboard J13 to A23 test set motherboard J545 36R 8121 0834 Rear panel HANDLER I O to A23 test set motherboard J400 a nR n wires in a ribbon flat cable nW n wires in a wire harness b If you are replacing an old LED board wire harnesses with a current ver...

Страница 308: ...6 120 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 43 Bottom Ribbon Cables and Wire Harnesses 4 Port Options 400 419 423 ...

Страница 309: ...est port 4 reference coupler Test port 2 reference coupler A33 A34 A35 A36 5087 7793 Was 5087 7724 4 Test port 1 coupler Test port 3 coupler Test port 4 coupler Test port 2 coupler A37 5087 7759 Was 5087 7271 1 Reference mixer switch N5240 60058 Was N5240 60051 2 Front panel LED board A38 A39 A40 A41 33325 60016 Was 33325 60012 4 Test port 1 source attenuator Test port 3 source attenuator Test por...

Страница 310: ... bypass switch A59 5087 7344 1 Noise downconverter A64 5087 7345 1 Tuner 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 attached to connector P1001 and Source 2 As a result of this change the IF multiplexer boards have had their P1001 connecto...

Страница 311: ...Keysight N5244A 45A Service Guide 6 123 Replaceable Parts Replaceable Parts Listings ...

Страница 312: ...6 124 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 44 Bottom Assemblies 4 Port Options 400 419 423 029 ...

Страница 313: ...Keysight N5244A 45A Service Guide 6 125 Replaceable Parts Replaceable Parts Listings This page intentionally left blank ...

Страница 314: ...5 20102 1 A7 port 1 doubler to W56 W56 SR N5245 20103 1 W55 to rear panel EXT TSET DRIVE RF OUT J6 W57 SR N5245 20012 1 A27 mixer brick to EXT TSET DRIVE LO OUT J5 W61 F N5242 60017 1 A27 mixer brick A to A24 IF multiplexer P1 W62 F N5242 60021 1 A27 mixer brick R1 to A24 IF multiplexer P411 W63 F N5242 60022 1 A27 mixer brick R2 to A24 IF multiplexer P412 W64 F N5242 60018 1 A27 mixer brick B to ...

Страница 315: ...T IN J1 W123 SR N5245 20155 Was N5245 20104 4 Rear panel jumper W161 SR N5245 20151 1 A38 port 1 source attenuator to front panel port 1 SOURCE OUT W162 SR N5245 20153 1 Front panel port 1 CPLR THRU to A56 port 1 noise bypass switch W163 SR N5245 20149 1 A64 tuner to A56 port 1 noise bypass switch W164 SR N5245 20148 1 A64 tuner to A56 port 1 noise bypass switch W165 SR N5245 20152 1 A42 port 1 bi...

Страница 316: ...6 128 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 45 Bottom RF Cables 4 Port Options 400 419 423 029 Ports 1 and 2 ...

Страница 317: ... port 3 reference coupler to A39 port 3 source attenuator W86 SR N5245 20027 1 A39 port 3 source attenuator to front panel Port 3 SOURCE OUT W87 SR N5245 20089 1 Port 3 CPLR THRU to A43 port 3 bias tee W88 SR N5245 20086 1 A43 port 3 bias tee to A34 port 3 coupler W89 SR N5245 20026 1 A31 port 4 reference coupler to A40 port 4 source attenuator W90 SR N5245 20028 1 A40 port 4 source attenuator to ...

Страница 318: ... A31 port 4 reference coupler W117 SR N5245 20092 1 A52 port 4 mechanical switch to PORT 4 SW SRC OUT J4 W118 SR N5245 20091 1 A52 port 4 mechanical switch to PORT 4 SW TSET J3 W123 SR N5245 20155 Was N5245 20104 4 Rear panel jumper a SR semirigid coaxial cable F flexible coaxial cable Reference Designator Typea Part Number Qty Description ...

Страница 319: ...Keysight N5244A 45A Service Guide 6 131 Replaceable Parts Replaceable Parts Listings Figure 6 46 Bottom RF Cables 4 Port Options 400 419 423 029 Ports 3 and 4 ...

Страница 320: ... test set motherboard J206 to A47 port 3 receiver attenuator 4W P O A56 port 1 noise bypass switch to A59 noise downconverter J42 port 1 Refer to 2 Port Configuration Options 200 219 224 029 on page 6 52 16R N5245 60006 A23 test set motherboard J547 to A39 port 3 source attenuator 2W P O bias tee A23 test set motherboard J541 to A42 port 1 bias tee 2W P O bias tee A23 test set motherboard J543 to ...

Страница 321: ...board J1 to A23 test set motherboard J1 to A24 IF multiplexer board J1 25R E4410 60160 A18 system motherboard J13 to A23 test set motherboard J545 36R 8121 0834 Rear panel HANDLER I O to A23 test set motherboard J400 a nR n wires in a ribbon flat cable nW n wires in a wire harness b If you are replacing an old LED board wire harnesses with a current version N5225 60001 both wire harnesses must be ...

Страница 322: ...6 134 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 47 Bottom Ribbon Cables and Wire Harnesses 4 Port Options 400 419 423 029 ...

Страница 323: ...Keysight N5244A 45A Service Guide 6 135 Replaceable Parts Replaceable Parts Listings This page intentionally left blank ...

Страница 324: ...F cable A56 port 1 bypass switch to front panel port 1 CPLR THRU W135 N5245 20082 1 RF cable A56 port 1 bypass switch to A42 port 1 bias tee W136 N5245 20080 1 RF cable A57 port 2 bypass switch to front panel port 2 CPLR THRU W137 N5245 20105 1 RF cable A57 port 2 bypass switch to A45 port 2 bias tee W139 N5245 20079 1 RF cable A57 port 2 bypass switch to A58 port 2 bridge thru W140 N5245 20107 1 ...

Страница 325: ... Figure 6 48 Bottom Assemblies and Cables 4 Port Options 400 419 423 H29 This illustration shows only those parts that are unique to Option H29 For information on other parts included in option combination 400 419 423 H29 refer to 4 Port Configuration Options 400 419 423 on page 6 109 ...

Страница 326: ...nce coupler Test port 4 reference coupler Test port 2 reference coupler A33 A34 A35 A36 5087 7793 Was 5087 7724 4 Test port 1 coupler Test port 3 coupler Test port 4 coupler Test port 2 coupler A37 5087 7759 Was 5087 7271 1 Reference mixer switch N5240 60058 Was N5240 60051 2 Front panel LED board A38 A39 A40 A41 33325 60016 Was 33325 60012 4 Test port 1 source attenuator Test port 3 source attenu...

Страница 327: ...lies 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 attached to 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 ...

Страница 328: ...6 140 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 49 Bottom Assemblies 4 Port Options 400 419 423 H85 ...

Страница 329: ...2 W51 SR Refer to Top Cables All Cables All Options on page 6 21 W53 SR N5245 20023 1 A26 splitter to A27 mixer brick W55 SR N5245 20102 1 A7 port 1 doubler to W56 W56 SR N5245 20103 1 W55 to rear panel EXT TSET DRIVE RF OUT J6 W57 SR N5245 20012 1 A27 mixer brick to EXT TSET DRIVE LO OUT J5 W61 F N5242 60017 1 A27 mixer brick A to A24 IF multiplexer P1 W62 F N5242 60021 1 A27 mixer brick R1 to A2...

Страница 330: ...MB THRU IN J10 to A54 combiner W109 SR N5245 20093 1 Rear panel PORT 1 COMB ARM IN J9 to A54 combiner W110 SR N5245 20067 1 A50 port 1 mechanical switch to A54 combiner W119 SR N5245 20063 1 A53 port 2 mechanical switch to W17 W120 SR N5245 20062 1 A53 port 2 mechanical switch to A32 port 2 reference coupler W121 SR N5245 20071 1 A53 port 2 mechanical switch to PORT 2 SW SRC OUT J2 W122 SR N5245 2...

Страница 331: ...Keysight N5244A 45A Service Guide 6 143 Replaceable Parts Replaceable Parts Listings Figure 6 50 Bottom RF Cables 4 Port Options 400 419 423 H85 Ports 1 and 2 ...

Страница 332: ...r brick R4 to A24 IF multiplexer P414 W67 F N5242 60020 1 A28 mixer brick R3 to A24 IF multiplexer P413 W68 F N5242 60023 1 A28 mixer brick C to A24 IF multiplexer P601 W85 SR N5245 20026 1 A30 port 3 reference coupler to A39 port 3 source attenuator W86 SR N5245 20027 1 A39 port 3 source attenuator to front panel Port 3 SOURCE OUT W89 SR N5245 20026 1 A31 port 4 reference coupler to A40 port 4 so...

Страница 333: ...5 20092 1 A52 port 4 mechanical switch to PORT 4 SW SRC OUT J4 W118 SR N5245 20091 1 A52 port 4 mechanical switch to PORT 4 SW TSET J3 W123 SR N5245 20155 Was N5245 20104 4 Rear panel jumper a SR semirigid coaxial cable F flexible coaxial cable Reference Designator Typea Part Number Qty Description ...

Страница 334: ...6 146 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 51 Bottom RF Cables 4 Port Options 400 419 423 H85 Ports 3 and 4 ...

Страница 335: ...2 10R N5245 60026 Was 8121 0982 or N5242 60007 A23 test set motherboard J205 to A46 port 1 receiver attenuator 16R N5245 60006 A23 test set motherboard J549 to A38 port 1 source attenuator 10R N5245 60026 Was 8121 0982 or N5242 60007 A23 test set motherboard J206 to A47 port 3 receiver attenuator 16R N5245 60006 A23 test set motherboard J547 to A39 port 3 source attenuator 3W N5225 60001b Was N524...

Страница 336: ...4 IF multiplexer board J1 25R E4410 60160 A18 system motherboard J13 to A23 test set motherboard J545 36R 8121 0834 Rear panel HANDLER I O to A23 test set motherboard J400 a nR n wires in a ribbon flat cable nW n wires in a wire harness b If you are replacing an old LED board wire harnesses with a current version N5225 60001 both wire harnesses must be replaced You must also replace the old test s...

Страница 337: ...Keysight N5244A 45A Service Guide 6 149 Replaceable Parts Replaceable Parts Listings Figure 6 52 Bottom Ribbon Cables and Wire Harnesses 4 Port Options 400 419 423 H85 ...

Страница 338: ...A56 port 1 bypass switch to A38 port 1 source attenuator W133 N5245 20083 1 RF cable A56 port 1 bypass switch to front panel port 1 SOURCE OUT W134 N5245 20084 1 RF cable A56 port 1 bypass switch to front panel port 1 CPLR THRU W136 N5245 20080 1 RF cable A57 port 2 bypass switch to front panel port 2 CPLR THRU W139 N5245 20079 1 RF cable A57 port 2 bypass switch to A58 port 2 bridge thru W140 N52...

Страница 339: ...Keysight N5244A 45A Service Guide 6 151 Replaceable Parts Replaceable Parts Listings Figure 6 53 Bottom Assemblies and Cables 4 Port Options 400 419 423 H85 H29 ...

Страница 340: ...lier amplifier 26 5 HMA26 5 A26 5067 4086 5067 6086 Was 5086 7408 1 Splitter A27 A28 5087 7323 5087 6323 2 Mixer brick A29 A30 A31 A32 5087 7760 Was 5086 7658 4 Test port 1 reference coupler Test port 3 reference coupler Test port 4 reference coupler Test port 2 reference coupler A33 A34 A35 A36 5087 7793 Was 5087 7724 4 Test port 1 coupler Test port 3 coupler Test port 4 coupler Test port 2 coupl...

Страница 341: ...bypass switch A59 5087 7344 1 Noise downconverter A64 5087 7345 1 Tuner 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 attached to connector P1001 and Source 2 As a result of this change the IF multiplexer boards have had their P1001 connector...

Страница 342: ...6 154 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 54 Bottom Assemblies 4 Port Options 400 419 423 H85 029 ...

Страница 343: ...Keysight N5244A 45A Service Guide 6 155 Replaceable Parts Replaceable Parts Listings This page intentionally left blank ...

Страница 344: ...itter to A27 mixer brick W55 SR N5245 20102 1 A7 port 1 doubler to W56 W56 SR N5245 20103 1 W55 to rear panel EXT TSET DRIVE RF OUT J6 W57 SR N5245 20012 1 A27 mixer brick to EXT TSET DRIVE LO OUT J5 W61 F N5242 60017 1 A27 mixer brick A to A24 IF multiplexer P1 W62 F N5242 60021 1 A27 mixer brick R1 to A24 IF multiplexer P411 W63 F N5242 60022 1 A27 mixer brick R2 to A24 IF multiplexer P412 W64 F...

Страница 345: ...per W125 SR N5245 20138 1 A57 port 2 noise bypass switch to A36 test port 2 coupler W159 SR N5245 20162 1 A33 port 1 coupler to A56 Port 1 noise bypass switch W161 SR N5245 20151 1 A38 port 1 source attenuator to front panel port 1 SOURCE OUT W162 SR N5245 20153 1 Front panel port 1 CPLR THRU to A56 port 1 noise bypass switch W163 SR N5245 20149 1 A64 tuner to A56 port 1 noise bypass switch W164 S...

Страница 346: ...6 158 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 55 Bottom RF Cables 4 Port Options 400 419 423 H85 029 Ports 1 and 2 ...

Страница 347: ... W67 F N5242 60020 1 A28 mixer brick R3 to A24 IF multiplexer P413 W68 F N5242 60023 1 A28 mixer brick C to A24 IF multiplexer P601 W85 SR N5245 20026 1 A30 port 3 reference coupler to A39 port 3 source attenuator W86 SR N5245 20027 1 A39 port 3 source attenuator to front panel Port 3 SOURCE OUT W89 SR N5245 20026 1 A31 port 4 reference coupler to A40 port 4 source attenuator W90 SR N5245 20028 1 ...

Страница 348: ...45 20092 1 A52 port 4 mechanical switch to PORT 4 SW SRC OUT J4 W118 SR N5245 20091 1 A52 port 4 mechanical switch to PORT 4 SW TSET J3 W123 SR N5245 20155 Was N5245 20104 4 Rear panel jumper a SR semirigid coaxial cable F flexible coaxial cable Reference Designator Typea Part Number Qty Description ...

Страница 349: ...Keysight N5244A 45A Service Guide 6 161 Replaceable Parts Replaceable Parts Listings Figure 6 56 Bottom RF Cables 4 Port Options 400 419 423 H85 029 Ports 3 and 4 ...

Страница 350: ...21 0982 or N5242 60007 A23 test set motherboard J206 to A47 port 3 receiver attenuator 4W P O A56 port 1 noise bypass switch to A59 noise downconverter J42 port 1 Refer to 2 Port Configuration Options 200 219 224 029 on page 6 52 16R N5245 60006 A23 test set motherboard J547 to A39 port 3 source attenuator 3W N5225 60001b A23 test set motherboard J222 to ports 2 4 LED board J1 4W P O A51 port 2 me...

Страница 351: ...13 to A23 test set motherboard J545 36R 8121 0834 Rear panel HANDLER I O to A23 test set motherboard J400 a nR n wires in a ribbon flat cable nW n wires in a wire harness b If you are replacing an old LED board wire harnesses with a current version N5225 60001 both wire harnesses must be replaced You must also replace the old test set front plate with a current version 2 port N5224 00004 or 4 port...

Страница 352: ...6 164 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 57 Bottom Ribbon Cables and Wire Harnesses 4 Port Options 400 419 423 H85 029 ...

Страница 353: ...oot and screw Refer to External Hardware and Miscellaneous Parts All Options on page 6 178 6960 0149 1 Hole plug 2190 0958 Was 2190 0034 Lock washer 0380 0644 Jack screw N5245 00008 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 0380 4670 Was 1251 7812 Jack screw 0 442 inch length 1251 7812 Jack screw 0 5 i...

Страница 354: ...ions 400 419 423 Ports 1 and 2 on page 6 112 or Bottom RF Cables 2 Port Options 200 219 224 on page 6 46 2190 0102 2 Lock washer 2950 0035 Hex nut 8120 5063 2 BNC cable 6960 0523 2 Hole plug None used for Option 423 0955 2394 1 Termination 2 4 mm 50 GHz load 1 used for Option 224 and 423 a This part number is no longer required on s n s 5541 5542 5544 5545 5547 5549 and newer But is included for y...

Страница 355: ... 5 Fan 3160 0281 Was 3160 4198 5 Fan guard 0361 1272 20 Fan rivet N5245 00006 1 Fan bracket for 2 fans N5245 00003 1 Fan bracket for 3 fans 0515 0372 12 Machine screw M3 0 x 8 pan head To attach 2 fan assy to chassis 3 fan assy to chassis Chassis Refer to Internal Hardware and Miscellaneous Parts All Options on page 6 176 Not shown E4440 00021 5 EMI shield for fan adhesive ...

Страница 356: ...6 168 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 59 Fan Assemblies Side View All Options ...

Страница 357: ...ine screw M3 0 x 16 pan head To attach midplane board to midplane bracket 0515 1227 3 Machine screw M3 0 x 6 flat head To attach power supply bracket to power supply 0515 0372 7 Machine screw M3 0 x 8 pan head To attach power supply bracket to inner panels A18 system motherboard to the chassis 0400 0353 6 Midplane board grommets 0515 0380 12 Machine screw M4 0 x 10 pan head To attach all doubler a...

Страница 358: ...6 170 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 60 Top Hardware and Miscellaneous Parts Top View All Options ...

Страница 359: ...nuators to their brackets A46 A49 receiver attenuator brackets to test set deck test set deck to chassis shields to mixer bricks A25 HMA26 5 to inner bracket A37 reference mixer switch to its bracket reference mixer switch bracket to test set deck coupler plate assy to test set deck front bias tee brackets to the chassis and A57 port 2 bypass switch A58 bridge A59 noise downconverter bracket to ch...

Страница 360: ... 4 rcvr attenuators all src attenuators All prefixes N5245 00014 4 Bracket For all bypass switches All prefixes N5224 00004b Was N5245 00010 1 Test set front plate 2 port models only All prefixes N5224 00005b Was N5245 00013 1 Test set front plate 4 port models only All prefixes E4403 20033 4 Gap pad Between each coupler and test set front sub panel All prefixes 0460 2725 2 Coupler vibe mount Betw...

Страница 361: ... A57 port 2 bypass switch to its bracket Option H29 All prefixes N5245 00026 1 Bracket for A56 port 1 bypass switch Option H29 All prefixes N5245 00032 2 Bracket for A58 bridge and Options 029 H29 noise downconverters All prefixes N5245 00034 1 Bracket for A56 port 1 noise bypass switch Option 029 a In this table the two letters that indicate the PNA manufacturing location have been removed from e...

Страница 362: ...6 174 Keysight N5244A 45A Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 61 Bottom Hardware and Miscellaneous Parts ...

Страница 363: ...Keysight N5244A 45A Service Guide 6 175 Replaceable Parts Replaceable Parts Listings This page intentionally left blank ...

Страница 364: ...de inner bracket 5150 and below N5245 00005 All prefixes W1312 00048 1 Midplane bracket 5201 and above N5247 00015 1 Right side inner bracket 5150 and below N5245 00004 5201 and above N5224 00001 1 Chassis 5150 and below N5245 00001 All prefixes 0515 0372 34 Machine screw M3 0 x 8 pan head To attach midplane bracket to left and right side inner brackets front bracket to left and right side inner b...

Страница 365: ...Keysight N5244A 45A Service Guide 6 177 Replaceable Parts Replaceable Parts Listings Figure 6 62 Internal Hardware and Miscellaneous Parts All Options ...

Страница 366: ...ll prefixes N5247 60003 Was N5105 60032 2 Strap handle assembly Includes item All prefixes 0515 0710 4 Machine screw M5 0 x 18 flat head To attach strap handles All prefixes 5021 2840 4 Key lock for bottom foot All prefixes 5041 9167 4 Bottom foot W1312 40032 4 Hole plug When analyzer is rack mounted All prefixes 0515 0372 26 Machine screw M3 0 x 8 pan head To attach inner cover 5201 and above N52...

Страница 367: ...Keysight N5244A 45A Service Guide 6 179 Replaceable Parts Replaceable Parts Listings Figure 6 63 External Hardware and Miscellaneous Parts All Options ...

Страница 368: ...number is for reference 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 N5245 90001 H29 User s Guidea N5245 90013 H29a Accessory Items 2 4 mm male to 2 4 mm female adapter To connect an ECal module 85056 60098 RF cable To connect an ECal module N5245 20140 GPIB Cable...

Страница 369: ...le 0960 3245 Was 1150 7896 USB to GPIB adapter 82357B ESD Supplies Adjustable antistatic wrist strap 9300 1367 Antistatic wrist strap grounding cord 5 foot length 9300 0980 Static control table 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 1CM incl...

Страница 370: ...pgrades Available on page 2 3 for a complete description of each option included in the upgrades Rack mount kit rack mount flanges and hardware 5063 9237 Rack mount rail set E3663AC Front handle kit two classicb handles and hardware 5063 9230 a Option H29 will not be available for purchase after May 1 2013 b For rack mount use you must replace factory installed ruggedized handles thick aluminum no...

Страница 371: ...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 te...

Страница 372: ...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 ...

Страница 373: ...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...

Страница 374: ...urce boards Doubler boards Noise receiver board Frequency reference board Signal processing ADC module SPAM board page 7 15 A18 System motherboard page 7 21 A19 Midplane board page 7 24 A20 Power supply page 7 26 A21 CPU board page 7 28 A22 GPIB board page 7 30 A23 Test set motherboard page 7 32 A24 IF multiplexer board page 7 34 A25 Multiplier amplifier 26 5 HMA26 5 page 7 36 A26 Splitter page 7 ...

Страница 375: ...tional page 7 48 A50 A51 A52 A53 Port 1 mechanical switch Optional Port 3 mechanical switch Optional Port 4 mechanical switch Optional Port 2 mechanical switch Optional page 7 52 A54 Combiner Optional page 7 52 A55 Solid state drive page 7 55 A56 Port 1 noise bypass switch Option H29 or 029 page 7 57 Port 1 noise bypass switch Option 029 page 7 60 Option H29 A57 A58 A59 Port 2 noise bypass switch ...

Страница 376: ...7 6 Keysight N5244A 45A Service Guide Repair and Replacement Procedures Removal and Replacement Procedures 7 This page intentionally left blank ...

Страница 377: ...ear 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 26 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 rails 2 On the b...

Страница 378: ...7 8 Keysight N5244A 45A Service Guide Repair and Replacement Procedures Removing the Covers 7 Figure 7 1 Outer and Inner Cover Removal ...

Страница 379: ... a 5 16 inch torque wrench remove all the semirigid jumpers item from the front panel 4 With a T 20 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 post repair adjustments ...

Страница 380: ...7 10 Keysight N5244A 45A Service Guide Repair and Replacement Procedures Removing and Replacing the Front Panel Assembly 7 Figure 7 2 Front Panel Assembly Removal ...

Страница 381: ...ont panel interface board Removing the A1 Front Panel Interface Board and Keypad Assembly 1 Remove the round knob RPG from the front panel by gently pulling the knob forward 2 Remove the A2 USB board as outlined above 3 Disconnect the following cables from the A1 front panel interface board display cable item inverter board cable item touchscreen controller board cable item and power switch cable ...

Страница 382: ...he 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 the rubb...

Страница 383: ...item 2 Remove seven 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 orientation of the rubber boot on the old touch screen and ...

Страница 384: ...onnecting 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 down bracket 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 a...

Страница 385: ...m 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 A7 A8 A9 A12 A13 A14 A15 A16 and A17 boards a Remove all cables connected to the top of the board to be removed Note the location of each cable for reinstallation In February 2012 the ...

Страница 386: ...rd and attach them to the bottom of 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 Refer to Table 7 2 on page 7 79 If any N5230 60002 13 5 GHz Synthesizer board in your PNA is replaced with the RoHS compliant N5240 60076 board you must replace ALL of...

Страница 387: ...ce Guide 7 17 Repair and Replacement Procedures Removing and Replacing the A4 A17 Boards For analyzers with serial numbers prefixed MY SG US5150 and below Figure 7 6 A4 A5 A7 A8 A9 A10 A12 A13 A14 A15 A16 and A17 Boards Removal ...

Страница 388: ...om 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 A7 A8 A9 A12 A13 A14 A15 A16 and A17 boards a Remove all cables connected to the top of the board to be removed Note the location of each cable for reinstallation In February 2012 the...

Страница 389: ...installing it If replacing a doubler board make sure the new board has loads connected to the same ports as were used on the old board This may require moving a load from the old board to the new board or removing the load from the new board When replacing the A5 or A10 source board remove the semirigid cables attached to the bottom of the old board and attach them to the bottom of the new board B...

Страница 390: ...ervice Guide Repair and Replacement Procedures Removing and Replacing the A4 A17 Boards For analyzers with serial numbers prefixed MY SG US5201 and above 7 Figure 7 7 A4 A5 A7 A8 A9 A10 A12 A13 A14 A15 A16 and A17 Boards Removal ...

Страница 391: ...ing and Replacing the A22 GPIB Board on page 7 30 10 Remove the A19 midplane board Refer to Removing and Replacing the A19 Midplane Board on page 7 24 11 Remove the A4 A17 boards Refer to Removing and Replacing the A4 A17 Boards For analyzers with serial numbers prefixed MY SG US5150 and below on page 7 15 12 Remove the right side and left side fan brackets Disconnect the right fan wire and the le...

Страница 392: ...ssis 19 Slide the A18 system motherboard toward the rear of the analyzer to release it from the 15 keyhole standoffs item on the chassis 20 Lift the A18 system motherboard out of the analyzer 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...

Страница 393: ...Keysight N5244A 45A Service Guide 7 23 Repair and Replacement Procedures Removing and Replacing the A18 System Motherboard Figure 7 8 A18 System Motherboard Removal ...

Страница 394: ...tem 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 midplane board alignment pins Remove these rubber grommets and retain them for reinstallation on the new A19 midplane board 8 Lift the A19 midplane board out of the analyzer Replacement Procedure 1 Reverse the order of the remo...

Страница 395: ...Keysight N5244A 45A Service Guide 7 25 Repair and Replacement Procedures Removing and Replacing the A19 Midplane Board Figure 7 9 A19 Midplane Board Removal ...

Страница 396: ...procedure 1 Disconnect the power cord 2 Remove the outer and inner covers Refer to Removing the Covers on page 7 7 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 power supply assembly out the rear of the analyzer Replacement Procedure 1 Reverse the order of the removal procedure 2 Perfo...

Страница 397: ...Keysight N5244A 45A Service Guide 7 27 Repair and Replacement Procedures Removing and Replacing the A20 Power Supply Assembly Figure 7 10 A20 Power Supply Assembly Removal ...

Страница 398: ...ly 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 A21 CPU board assembly from the A19 midplane board 5 Slide the A21 CPU board assembly out the rear of the analyzer 6 If the A21 CPU board assembly is being replaced you must first remove the A55 solid state driv...

Страница 399: ...Keysight N5244A 45A Service Guide 7 29 Repair and Replacement Procedures Removing and Replacing the A21 CPU Board Assembly Figure 7 11 A21 CPU Board Assembly Removal ...

Страница 400: ...ving the Covers on page 7 7 3 Remove the A20 power supply assembly Refer to Removing and Replacing the A20 Power Supply Assembly on page 7 26 4 Remove the A21 CPU board assembly Refer to Removing and Replacing the A21 CPU Board Assembly on page 7 28 5 Remove the rear panel Refer to Removing and Replacing the Rear Panel on page 7 71 6 Slide the A22 GPIB board out the rear of the analyzer Replacemen...

Страница 401: ...Keysight N5244A 45A Service Guide 7 31 Repair and Replacement Procedures Removing and Replacing the A22 GPIB Board Figure 7 12 A22 GPIB Board Removal ...

Страница 402: ... the analyzer bottom side up 4 Disconnect ALL ribbon cables item and ALL wire harnesses item from the A23 test set motherboard 5 Remove connector hardware item from 11 rear panel BNC connectors 6 Remove connector hardware item from the rear panel TEST SET I O connector 7 Remove 10 screws item from the A23 test set motherboard 8 Slide the A23 test set motherboard toward the front of the instrument ...

Страница 403: ...Keysight N5244A 45A Service Guide 7 33 Repair and Replacement Procedures Removing and Replacing the A23 Test Set Motherboard Figure 7 13 A23 Test Set Motherboard Removal ...

Страница 404: ... cables item Á 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 connector 9 Remove four screws item from the stabilizer bracket and remove the stabilizer bracket 10 Remove four screws item from the A24 IF multiplexer board 11 Slide the A24 IF multiplexer board toward the front of the...

Страница 405: ...Keysight N5244A 45A Service Guide 7 35 Repair and Replacement Procedures Removing and Replacing the A24 IF Multiplexer Board Figure 7 14 A24 IF Multiplexer Board Removal ...

Страница 406: ...side up 4 Disconnect the ribbon cable item from the A25 HMA26 5 assembly 5 Disconnect cable W51 from the A25 HMA26 5 6 Remove cable W52 from between the A25 HMA26 5 and the A26 splitter 7 Remove four screws item that hold the A25 HMA26 5 on the chassis side panel Replacement Procedure 1 Reverse the order of the removal procedure Torque all RF cable connectors to 10 in lbs 2 Perform the post repair...

Страница 407: ...Keysight N5244A 45A Service Guide 7 37 Repair and Replacement Procedures Removing and Replacing the A25 HMA26 5 Figure 7 15 A25 HMA26 5 Removal ...

Страница 408: ...ect cable W52 at the A26 splitter connection 5 Remove cable W53 from between the A26 splitter and the A27 mixer brick 6 Remove cable W54 from between the A26 splitter and the A28 mixer brick 7 Remove two screws item from the A26 splitter and lift the splitter out of the analyzer Replacement Procedure 1 Reverse the order of the removal procedure Torque all RF cable connections to 10 in lbs 2 Perfor...

Страница 409: ...Keysight N5244A 45A Service Guide 7 39 Repair and Replacement Procedures Removing and Replacing the A26 Splitter Figure 7 16 A26 Splitter Removal ...

Страница 410: ...mixer bricks 7 Remove two screws item from each end of the mixer brick bracket 8 Move the disconnected semirigid cables out of the way and 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 t...

Страница 411: ...8 mixer brick remember to install the 50 ohm load termination and cable 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 79 Figure 7 17 A27 and A28 Mixer Bricks Removal ...

Страница 412: ... item from the mounting bracket of the reference coupler to be replaced 6 Move the disconnected semirigid cables out of the way and lift the reference coupler mounting bracket with the reference 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 four screws that attach the refer...

Страница 413: ...5244A 45A Service Guide 7 43 Repair and Replacement Procedures Removing and Replacing the A29 A32 Reference Couplers and Reference Coupler Mounting Brackets Figure 7 18 A29 through A32 reference couplers Removal ...

Страница 414: ...isconnect 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 Replacement Procedure 1 Reverse the order of the removal procedure Adhere a new gap pad 4 port or coupler bumper 2 port item to the ne...

Страница 415: ...Keysight N5244A 45A Service Guide 7 45 Repair and Replacement Procedures Removing and Replacing the A33 A36 Test Port Couplers Figure 7 19 A33 through A36 Test Port Couplers Removal ...

Страница 416: ... the disconnected semirigid cables out of the way and lift the A37 reference mixer switch and mounting bracket out of the analyzer 7 Disconnect the wire harness cable item from the A37 reference mixer switch 8 Remove two screws item that attach the A37 reference mixer switch to its mounting bracket Replacement Procedure 1 Reverse the order of the removal procedure When reinstalling the A37 referen...

Страница 417: ...Keysight N5244A 45A Service Guide 7 47 Repair and Replacement Procedures Removing and Replacing the A37 Reference Mixer Switch Figure 7 20 A37 Reference Mixer Switch Removal ...

Страница 418: ...to remove the attenuator bracket If so note the location and orientation of each for reinstallation later 6 Remove three screws item that secure A46 and A49 receiver attenuator brackets to the test set deck or remove two screws item that secure A47 and A48 receiver attenuator brackets or all source attenuator brackets to the test set deck 7 Move the disconnected semirigid cables out of the way and...

Страница 419: ...sight N5244A 45A Service Guide 7 49 Repair and Replacement Procedures Removing and Replacing the A38 A41 Source Attenuators and the A46 A49 Receiver Attenuators Figure 7 21 Source and Receiver Attenuators ...

Страница 420: ...crews item from the bias tee to be removed Make note of the location of the wire harness cable ground wire for reinstallation later 6 Disconnect the wire harness cable item from the bias tee 7 Move the disconnected semirigid cables out of the way and remove the bias tee from the analyzer Replacement Procedure 1 Reverse the order of the removal procedure Torque all cable connections to 10 in lbs Re...

Страница 421: ...Keysight N5244A 45A Service Guide 7 51 Repair and Replacement Procedures Removing and Replacing the A42 A45 Bias Tees Figure 7 22 A42 through A45 Bias Tees Removal ...

Страница 422: ... as a complete assembly 5 Disconnect four semirigid cables item from the bypass switch to be removed If removing the A54 combiner disconnect three semirigid cables item from the A54 combiner 6 Remove two screws item that secure the switch bracket to the test set deck 7 Move the disconnected semirigid cables out of the way and remove the switch bracket with the bypass switch attached from the analy...

Страница 423: ...r and Replacement Procedures Removing and Replacing the A50 A53 Bypass Switches and the A54 Combiner 2 Perform the post repair adjustments verifications and performance tests that pertain to this removal procedure Refer to Table 7 2 on page 7 79 ...

Страница 424: ...ysight N5244A 45A Service Guide Repair and Replacement Procedures Removing and Replacing the A50 A53 Bypass Switches and the A54 Combiner 7 Figure 7 23 A50 through A53 Bypass Switches and A54 Combiner Removal ...

Страница 425: ...ram Files 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 dr...

Страница 426: ...Procedures Removing and Replacing the A55 Solid State Drive SSD 7 Install Backup Files onto the New SSD 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 ...

Страница 427: ... Disconnect the A56 bypass switch wire harness cable item from the A59 noise downconverter Make note of the routing of this wire harness so that the wire harness for the new bypass switch can be routed in the same manner 6 Loosen the two screws item that secure the switch bracket to the chassis These screws use slotted holes so you need not remove them completely just loosen them 7 Move the discon...

Страница 428: ...ir and Replacement Procedures Removing and Replacing the A56 Port 1 Noise Bypass Switch Option H29 7 2 Perform the post repair adjustments verifications and performance tests that pertain to this removal procedure Refer to Table 7 2 on page 7 79 ...

Страница 429: ...Keysight N5244A 45A Service Guide 7 59 Repair and Replacement Procedures Removing and Replacing the A56 Port 1 Noise Bypass Switch Option H29 Figure 7 25 A56 Port 1 Noise Bypass Switch Removal ...

Страница 430: ...y to disconnect or remove other cables to gain access If you do make note of these cable connections for reconnection later 6 Disconnect the A64 tuner wire harness cable item from the A23 test set motherboard Make note of the routing of this wire harness so that it can be rerouted later in the same manner 7 Disconnect four semirigid cables from the A56 port 1 noise bypass switch It may be necessar...

Страница 431: ...r It may be necessary to loosen the other end of the cables to allow them to be moved Do not overbend them 11 Remove two screws item that secure the A64 tuner and the A56 bypass switch to the bracket Replacement Procedure 1 Reverse the order of the removal procedure reusing the existing hardware Torque all cable connectors to 10 in lbs 2 Perform the post repair adjustments verifications and perfor...

Страница 432: ...7 62 Keysight N5244A 45A Service Guide Repair and Replacement Procedures Removing and Replacing the A56 Port 1 Noise Bypass Switch Option 029 7 Figure 7 26 A56 Port 1 Noise Bypass Switch Removal ...

Страница 433: ... harnesses from the A57 port 2 bypass switch the A58 port 2 bridge and the A59 noise downconverter Make note of all cable connections for reconnection later It may be necessary to disconnect or remove other cables to gain access If you do make note of these cable connections for reconnection later 6 Loosen four screws item that secure the bracket to the chassis These screws use slotted holes so it...

Страница 434: ...ass Switch A58 Port 2 Bridge and A59 Noise Downconverter Option H29 7 2 Perform the post repair adjustments verifications and performance tests that pertain to this removal procedure Refer to Table 7 2 on page 7 79 Figure 7 27 A57 Port 2 Noise Bypass Switch A58 Port 2 Bridge and A59 Noise Downconverter Removal Option H29 ...

Страница 435: ...mbly 5 Disconnect all cables and wire harnesses from the A57 port 2 bypass switch and the A59 noise downconverter Make note of all cable connections for reconnection later It may be necessary to disconnect or remove other cables to gain access If you do make note of these cable connections for reconnection later 6 Loosen four screws item that secure the bracket to the chassis 7 Move the disconnect...

Страница 436: ...ment Procedures Removing and Replacing the A57 Port 2 Noise Bypass Switch and A59 Noise Downconverter Option 029 7 2 Perform the post repair adjustments verifications and performance tests that pertain to this removal procedure Refer to Table 7 2 on page 7 79 ...

Страница 437: ...uide 7 67 Repair and Replacement Procedures Removing and Replacing the A57 Port 2 Noise Bypass Switch and A59 Noise Downconverter Option 029 Figure 7 28 A57 Port 2 Noise Bypass Switch and A59 Noise Downconverter Removal Option 029 ...

Страница 438: ...e harness cable item from the A23 test set motherboard Make note of the routing of this wire harness so that it can be rerouted later in the same manner 7 Disconnect four semirigid cables from the A56 port 1 noise bypass switch It may be necessary to disconnect or remove other cables to gain access If you do make note of these cable connections for reconnection later 8 Disconnect the A56 bypass sw...

Страница 439: ... secure the A64 tuner to the A56 bypass switch and bracket Replacement Procedure 1 Reverse the order of the removal procedure reusing the existing hardware Torque all cable connectors 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 79 ...

Страница 440: ...7 70 Keysight N5244A 45A Service Guide Repair and Replacement Procedures Removing and Replacing the A64 Tuner 7 Figure 7 29 A64 Tuner Removal ...

Страница 441: ...g the A20 Power Supply Assembly on page 7 26 4 Remove the A21 CPU board assembly Refer to Removing and Replacing the A21 CPU Board Assembly on page 7 28 5 Remove all jumper cables item from the rear panel 6 Remove the 50 ohm load s item 7 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 whi...

Страница 442: ...7 72 Keysight N5244A 45A Service Guide Repair and Replacement Procedures Removing and Replacing the Rear Panel 7 Figure 7 30 Rear Panel Removal ...

Страница 443: ...edure 1 Disconnect the power cord 2 Remove the test port couplers Refer to Removing and Replacing the A33 A36 Test Port Couplers on page 7 44 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 verifications and performance tests that pertain to ...

Страница 444: ...7 74 Keysight N5244A 45A Service Guide Repair and Replacement Procedures Removing and Replacing the Front Panel LED Boards 7 Figure 7 31 Front Panel LED Boards Removal ...

Страница 445: ... to Removing and Replacing the A20 Power Supply Assembly on page 7 26 5 Remove screws item five on the right side and seven on the left side that attach the fan brackets to the chassis 6 Remove three screws item on both sides that attach the rear panel to the fan bracket 7 Raise the fan bracket out of both sides in the analyzer just enough to access the fan cables Disconnect the fan cables from th...

Страница 446: ... Repair and Replacement Procedures Removing and Replacing the Fans 7 2 Perform the post repair adjustments verifications and performance tests that pertain to this removal procedure Refer to Table 7 2 on page 7 79 Figure 7 32 B1 Fan Removal ...

Страница 447: ... page 7 55 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 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...

Страница 448: ...7 78 Keysight N5244A 45A Service Guide Repair and Replacement Procedures Removing and Replacing the Lithium Battery 7 Figure 7 33 Lithium Battery Removal ...

Страница 449: ...djustment 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 Linearity Tes...

Страница 450: ...Frequency Accuracy Test Source Power Accuracy Test Source Maximum Power Output Test Source Power Linearity Test The Operator s Check A14 frequency reference board 10 MHz Frequency Reference Adjustment Restore option data Refer to Repairing and Recovering Option Data in Chapter 8 Frequency Accuracy Test A15 13 5 GHz LO synthesizer board EE Default Adjustment Synth LO only Synthesizer Bandwidth Adju...

Страница 451: ...he Operator s Check A19 midplane board No adjustment needed None needed A20 power supply assembly No adjustment needed None needed A21 CPU board No adjustment needed The Operator s Check A22 GPIB board No adjustment needed None needed A23 test set motherboard Reinstall the serial number Refer to Installing or Changing a Serial Number in Chapter 8 Re enable all hardware options Refer to Option Enti...

Страница 452: ...8 mixer bricks Source Adjustment IF Gain Adjustment Receiver Characterization Receiver Adjustment IF Response Adjustment Option 090 093 or 094 Only Receiver Compression Test Noise Floor Test Calibration Coefficients Test Dynamic Accuracy Test Version 1 A29 A32 reference couplers Source Adjustment IF Gain Adjustment Receiver Characterization Receiver Adjustment IF Response Adjustment Option 090 093...

Страница 453: ...djustment IF Gain Adjustment Receiver Characterization Receiver Adjustment IF Response Adjustment Option 090 093 or 094 Only Source Maximum Power Output Test Calibration Coefficients Test Source Power Accuracy Test A54 combiner Source Adjustment IF Gain Adjustment Receiver Characterization Receiver Adjustment IF Response Adjustment Option 090 093 or 094 Only Source Maximum Power Output Test Calibr...

Страница 454: ...n converter Option H29 or 029 Noise Figure Adjustment Available with Option H29 Installed or Noise Figure Adjustment Available with Option 029 Installed System Noise Figure Test Noise Jitter Test Noise Receiver Linearity Test Noise Receiver Compression Test The Operator s Check A64 tuner Option 029 No adjustment needed System Noise Figure B1 fan No adjustment needed Check for fan operation Battery...

Страница 455: ... 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 cons...

Страница 456: ... Review 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 tre...

Страница 457: ...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...

Страница 458: ...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 ...

Страница 459: ...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 ...

Страница 460: ...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...

Страница 461: ...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 ...

Страница 462: ...Error 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 G...

Страница 463: ...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...

Страница 464: ...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...

Страница 465: ...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 ...

Страница 466: ... options if the frequency reference board is replaced To enable or remove an option 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 Gene...

Страница 467: ... to recover data that has been lost as a result of the repair 1 Select Repair from the Option Enable menu bar see Figure 8 5 on page 8 11 2 Click the Freq Ref board has been replaced check box 3 Click Begin Repair The data 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...

Страница 468: ...ure 8 5 on page 8 11 The current serial number is displayed If no 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...

Страница 469: ...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...

Страница 470: ...ive 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 ...

Страница 471: ...ate leveled source signals and receive clean test signals Storing Correction Constants After performing any adjustment listed on page 3 49 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...

Страница 472: ...8 18 Keysight N5244A 45A Service Guide General Purpose Maintenance Procedures Correction Constants 8 ...

Страница 473: ... A10 26 5 GHz source 2 board illustrated 6 20 operation 5 13 part number 6 17 removal and replacement 7 15 7 18 illustrated 7 17 7 20 troubleshooting 4 38 A12 doubler illustrated 6 20 part number 6 17 removal and replacement illustrated 7 17 7 20 procedure 7 15 7 18 A13 doubler illustrated 6 20 part number 6 17 removal and replacement illustrated 7 17 7 20 procedure 7 15 7 18 A14 frequency referen...

Страница 474: ...ed 7 39 procedure 7 38 troubleshooting 4 37 A27 mixer brick illustrated 6 25 6 31 6 38 6 45 6 54 6 64 6 72 6 81 6 90 6 100 6 111 6 124 6 140 6 154 operation 5 25 part number 6 24 6 30 6 37 6 44 6 52 6 63 6 70 6 80 6 88 6 99 6 109 6 121 6 138 6 152 removal and replacement illustrated 7 41 procedure 7 40 troubleshooting 4 45 A28 mixer brick illustrated 6 81 6 90 6 100 6 111 6 124 6 140 6 154 operati...

Страница 475: ...ing 4 43 A39 test port 3 source step attenuator illustrated 6 90 6 100 6 111 6 124 6 140 6 154 part number 6 88 6 99 6 109 6 121 6 138 6 152 removal and replacement illustrated 7 49 procedure 7 48 troubleshooting 4 43 A4 13 5 GHz source 1 synthesizer board illustrated 6 20 operation 5 12 part number 6 17 removal and replacement illustrated 7 17 7 20 procedure 7 15 7 18 troubleshooting 4 37 A40 tes...

Страница 476: ... 52 troubleshooting 4 43 A52 test port 4 mechanical switch illustrated 6 111 6 124 6 140 6 154 part number 6 109 6 121 6 138 6 152 removal and replacement illustrated 7 54 procedure 7 52 troubleshooting 4 43 A53 test port 2 mechanical switch illustrated 6 45 6 54 6 64 6 72 6 111 6 124 6 140 6 154 part number 6 44 6 52 6 63 6 70 6 109 6 121 6 138 6 152 removal and replacement illustrated 7 54 proce...

Страница 477: ... 179 part numbers 6 178 feet illustrated 6 179 part numbers 6 178 frequency reference board assembly 5 14 front panel interconnects 5 32 functional groups 5 4 digital control 5 6 digital processing 5 6 power supply 5 6 receiver group 5 6 signal separation 5 5 synthesized source 5 5 internal performance test software 3 32 internal replaceable parts illustrated 6 177 part numbers 6 176 miscellaneous...

Страница 478: ...le ribbon cables illustrated 6 29 part numbers 6 28 replaceable wire harnesses illustrated 6 29 part numbers 6 28 bottom assembly Option 219 replaceable parts illustrated 6 31 part numbers 6 30 replaceable RF cables illustrated 6 34 part numbers 6 32 replaceable ribbon cables illustrated 6 36 part numbers 6 35 replaceable wire harnesses illustrated 6 36 part numbers 6 35 bottom assembly Option 219...

Страница 479: ... harnesses illustrated 6 120 part numbers 6 118 bottom assembly Option 423 029 replaceable parts part numbers 6 121 replaceable RF cables illustrated 6 128 6 131 part numbers 6 126 6 129 replaceable ribbon cables illustrated 6 134 part numbers 6 132 replaceable wire harnesses illustrated 6 134 part numbers 6 132 bottom assembly Option 423 H29 replaceable parts illustrated 6 137 part numbers 6 136 ...

Страница 480: ...5 illustrated 6 143 6 146 part numbers 6 141 6 144 in bottom assembly Option 423 H85 029 illustrated 6 158 6 161 part numbers 6 156 6 159 in top assembly all options illustrated 6 23 part numbers 6 21 cables ribbon in bottom assembly Option 200 illustrated 6 29 part numbers 6 28 in bottom assembly Option 219 illustrated 6 36 part numbers 6 35 in bottom assembly Option 219 H85 illustrated 6 43 part...

Страница 481: ...ceiver characterization receiver adjustment 3 51 checks cable connector repeatabili ty failure of 3 21 insertion loss failure of 3 18 magnitude and phase stability failure of 3 20 return loss failure of 3 16 test port cables 3 12 3 15 operator s 3 12 accessories used in 3 12 description of 3 12 dialog box 3 14 failure of 3 15 performing 3 12 preliminary 3 12 system 3 1 getting ready 3 4 test port ...

Страница 482: ...rocessing subgroup 5 30 data storage hard disk 5 34 IDE 5 34 data option recovering 8 13 repairing 8 13 DCOM 8 7 default EE adjustment 3 54 description functional digital control group 5 6 digital processing group 5 6 power supply group 5 6 receiver group 5 6 signal separation group 5 5 synthesized source group 5 5 digital control group block diagram 5 31 functional description of 5 6 operation 5 ...

Страница 483: ...uilt assemblies program 6 4 EXT 10 MHz REF IN connector rear panel 5 15 EXT 10 MHz REF OUT connector rear panel 5 15 external analyzer replaceable parts illustrated 6 179 part numbers 6 178 external monitor 4 15 F failure broadband 4 34 of connector repeatability check 3 21 of insertion loss check 3 18 of magnitude and phase stability check 3 20 of operator s check 3 15 of return loss check 3 16 o...

Страница 484: ...im strip filler illustrated 6 12 part number 6 11 troubleshooting 4 16 USB board illustrated 6 15 part number 6 13 USB controller board illustrated 6 15 part number 6 13 functional groups 5 4 fuses 6 180 G gain IF adjustment 3 51 general safety considerations 1 3 government regulatory information 1 9 GPIB 8 7 cables part numbers 6 180 port rear panel connector 5 34 GPIB board illustrated 6 20 part...

Страница 485: ... number 6 13 removal and replacement illustrated 7 12 procedure 7 11 troubleshooting 4 14 IP address LAN 4 23 isolation cause of failure 8 10 definition of 8 10 measurements affected by 8 10 K keypad assembly illustrated 6 15 operation 5 33 parts list 6 13 removal and replacement illustrated 7 12 procedure 7 11 test 4 17 troubleshooting 4 16 Keysight contacting 2 7 support 2 7 kits calibration 2 5...

Страница 486: ...6 54 6 64 6 72 6 81 6 90 6 100 6 111 6 124 6 140 6 154 part number 6 24 6 30 6 37 6 44 6 52 6 63 6 70 6 80 6 88 6 99 6 109 6 121 6 138 6 152 N N1966A pulse I O adapter 2 3 nameplate front panel illustrated 6 12 part number 6 11 network analyzer See analyzer noise board illustrated 6 20 part number 6 17 removal and replacement procedure 7 15 noise bypass switch port 1 illustrated 6 54 6 124 6 137 6...

Страница 487: ... replaceable RF cables illustrated 6 27 part numbers 6 26 replaceable ribbon cables illustrated 6 29 part numbers 6 28 replaceable wire harnesses illustrated 6 29 part numbers 6 28 Option 219 bottom assembly replaceable RF cables illustrated 6 34 part numbers 6 32 replaceable ribbon cables illustrated 6 36 part numbers 6 35 replaceable wire harnesses illustrated 6 36 part numbers 6 35 Option 219 H...

Страница 488: ...eable wire harnesses part numbers 6 147 Option 423 H85 029 bottom assembly replaceable RF cables illustrated 6 158 6 161 part numbers 6 156 6 159 replaceable ribbon cables illustrated 6 164 part numbers 6 162 replaceable wire harnesses illustrated 6 164 part numbers 6 162 ordering information options and upgrades 2 3 replaceable parts 6 2 output power source accuracy test 3 32 linearity 3 34 maxim...

Страница 489: ...bottom assembly Option 423 6 11 2 6 115 in bottom assembly Option 423 029 6 126 6 129 in bottom assembly Option 423 H85 6 141 6 144 in bottom assembly Option 423 H85 029 6 156 6 159 replaceable ribbon cables in bottom assembly Option 200 6 28 in bottom assembly Option 219 6 35 in bottom assembly Option 219 H85 6 42 in bottom assembly Option 224 6 49 in bottom assembly Option 224 029 6 60 in bottom...

Страница 490: ...85 illustrated 6 140 part numbers 6 138 in bottom assembly Option 423 H85 029 illustrated 6 154 part numbers 6 152 in bottom assembly Option 423 H85 H29 illustrated 6 151 part numbers 6 150 in external analyzer illustrated 6 179 part numbers 6 178 in fan assemblies all options part numbers 6 167 in front panel assembly illustrated 6 12 6 15 part numbers 6 11 6 13 in internal analyzer illustrated 6...

Страница 491: ...r procedures 7 79 power button keypad removal and replacement illustrated 7 12 procedure 7 12 power supply assembly check 4 9 functional description of 5 6 functional group 5 4 illustrated 6 20 operation 5 35 part number 6 17 removal and replacement illustrated 7 27 procedure 7 26 troubleshooting 4 9 power switch board illustrated 6 15 parts list 6 13 removal and replacement illustrated 7 12 proce...

Страница 492: ...6 111 6 124 6 140 6 154 part number 6 24 6 30 6 37 6 44 6 52 6 63 6 70 6 80 6 88 6 99 6 109 6 121 6 138 6 152 test port 3 illustrated 6 81 6 90 6 100 6 111 6 124 6 140 6 154 part number 6 80 6 88 6 99 6 109 6 121 6 138 6 152 test port 4 illustrated 6 81 6 90 6 100 6 111 6 124 6 140 6 154 part number 6 80 6 88 6 99 6 109 6 121 6 138 6 152 troubleshooting 4 42 reference mixer switch illustrated 6 25...

Страница 493: ...85 029 illustrated 6 154 part numbers 6 152 in bottom assembly Option 423 H85 H29 illustrated 6 151 part numbers 6 150 in external analyzer illustrated 6 179 part numbers 6 178 in fan assemblies all options part numbers 6 167 in front panel assembly illustrated 6 12 6 15 part numbers 6 11 6 13 in internal analyzer illustrated 6 177 part numbers 6 176 in rear panel assembly illustrated 6 166 part n...

Страница 494: ...part numbers 6 162 replaceable wire harnesses in bottom assembly Option 200 illustrated 6 29 part numbers 6 28 in bottom assembly Option 219 illustrated 6 36 part numbers 6 35 in bottom assembly Option 219 H85 illustrated 6 43 part numbers 6 42 in bottom assembly Option 224 illustrated 6 51 part numbers 6 49 in bottom assembly Option 224 029 illustrated 6 62 part numbers 6 60 in bottom assembly Op...

Страница 495: ...1 source step attenuator illustrated 7 49 procedure 7 48 A39 test port 3 source step attenuator illustrated 7 49 procedure 7 48 A4 13 5 GHz source 1 synthesizer board illustrated 7 17 7 20 procedure 7 15 7 18 A40 test port 4 source step attenuator illustrated 7 49 procedure 7 48 A41 test port 2 source step attenuator illustrated 7 49 procedure 7 48 A42 test port 1 bias tee illustrated 7 49 7 51 pr...

Страница 496: ...bly Option 219 illustrated 6 34 part numbers 6 32 in bottom assembly Option 219 H85 illustrated 6 41 part numbers 6 39 in bottom assembly Option 224 illustrated 6 48 part numbers 6 46 in bottom assembly Option 224 029 illustrated 6 58 part numbers 6 55 in bottom assembly Option 224 H85 illustrated 6 67 part numbers 6 65 in bottom assembly Option 224 H85 029 illustrated 6 75 part numbers 6 73 in bo...

Страница 497: ...standard 2 7 shipment for service or repair 2 8 signal processing ADC module SPAM board illustrated 6 20 part number 6 17 signal separation group block diagram 5 22 5 23 defined 4 32 functional description of 5 5 functional group 5 4 operation 5 19 troubleshooting 4 39 4 41 single band failure 4 34 software options 8 12 solid state drive copying files from 7 55 data storage 5 34 illustrated 6 20 i...

Страница 498: ... 64 6 72 6 81 6 90 6 100 6 111 6 124 6 140 6 154 part number 6 24 6 30 6 37 6 44 6 52 6 63 6 70 6 80 6 88 6 99 6 109 6 121 6 138 6 152 synthesized source group functional description of 5 5 operation 5 7 synthesizer bandwidth adjustment 3 50 system adjustments 3 1 3 49 EE default 3 54 frequency at 10 MHz 3 49 getting ready 3 4 IF gain 3 51 IF response 3 54 noise figure 3 55 3 58 receiver calibrati...

Страница 499: ...152 removal and replacement illustrated 7 43 procedure 7 42 troubleshooting 4 42 test port 1 source step attenuator illustrated 6 31 6 38 6 45 6 54 6 64 6 72 6 90 6 100 6 111 6 124 6 140 6 154 part number 6 30 6 37 6 44 6 52 6 63 6 70 6 88 6 99 6 109 6 121 6 138 6 152 removal and replacement illustrated 7 49 procedure 7 48 troubleshooting 4 43 test port 2 bias tee illustrated 6 31 6 45 6 54 6 90 6...

Страница 500: ...troubleshooting 4 43 test port 4 bias tee illustrated 6 90 6 111 6 124 6 154 part number 6 88 6 109 6 121 6 152 removal and replacement illustrated 7 49 7 51 procedure 7 48 7 50 troubleshooting 4 43 test port 4 coupler illustrated 6 81 6 90 6 100 6 111 6 124 6 140 6 154 operation 5 20 part number 6 80 6 88 6 99 6 109 6 121 6 138 6 152 removal and replacement procedure 7 44 7 45 troubleshooting 4 4...

Страница 501: ... 4 42 A35 test port 4 coupler 4 42 A36 test port 2 coupler 4 42 A37 reference mixer switch 4 46 A38 test port 1 source step attenuator 4 43 A39 test port 3 source step attenuator 4 43 A4 13 5 GHz source 1 synthesizer board 4 37 A40 test port 4 source step attenuator 4 43 A41 test port 2 source step attenuator 4 43 A42 test port 1 bias tee 4 43 A43 test port 3 bias tee 4 43 A44 test port 4 bias tee...

Страница 502: ...bstitution 3 26 non ANSI NCSL Z540 1 1994 3 11 of operating environment 3 4 of operating specifications 3 4 system 3 1 3 8 3 22 dialog box 3 26 example of results 3 29 3 31 failure flowchart 3 28 failure of 3 27 getting ready 3 4 interpreting results 3 28 performing 3 24 procedure 3 26 what it verifies 3 22 VGA monitor 4 15 port rear panel connector 5 34 W warm up analyzer 3 5 warning 1 2 for serv...

Страница 503: ...ht N5244A 45A Service Guide 31 illustrated 6 134 part numbers 6 132 in bottom assembly Option 423 H85 illustrated 6 149 part numbers 6 147 in bottom assembly Option 423 H85 029 illustrated 6 164 part numbers 6 162 ...

Страница 504: ...32 Keysight N5244A 45A Service Guide Index ...

Страница 505: ...Installation Note Xxxxx xxxxx 3 ...

Страница 506: ...This information is subject to change without notice Keysight Technologies 2010 2016 Edition 2 December 2016 N5245 90001 www keysight com ...

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