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Keysight Technologies N5247B, Service Manual

The Keysight Technologies N5247B is a state-of-the-art measurement instrument offering precise RF and microwave analysis. To understand its features and optimize its use, download the comprehensive Service Manual for free from manualshive.com. This manual provides detailed instructions to maximize the capabilities of your device.

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Keysight N5247B Service Guide                                                                                                     4-47

Troubleshooting
Measurement System Troubleshooting

Checking the A70/A75 Low Frequency Extension (LFE) Board and the Bias 

Combiners

The 2-port and 4-port Low Frequency Extension (LFE) options add additional 

hardware to extend the start frequency of the VNA down to 900 Hz.

Figure 4-13 

LFE Block Diagram - Single Port Configuration Shown. Other Ports are 

Similar. 

Checking the Signal Separation Group

Before checking the signal separation group assemblies, you must open the 
analyzer.

1.

Turn off the analyzer power.

2.

Unplug the power to the analyzer and disconnect all front and rear panel 

connections except installed jumpers.

Use an antistatic work surface and wrist strap to reduce the chance of 

electrostatic discharge for all of the procedures in this chapter.

Summary of Contents for N5247B

Page 1: ...Service Guide Keysight 2 Port and 4 Port PNA X Microwave Network Analyzer This manual provides documentation for the following model N5247B 10 MHz to 67 GHz ...

Page 2: ...o 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 require or p...

Page 3: ...trical 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 Hardkeys Softkeys...

Page 4: ...6 Receiver Compression Test 3 36 Noise Floor Test 3 38 Calibration Coefficients Test 3 39 Dynamic Accuracy Test Version 1 3 40 Dynamic Accuracy Test Version 2 3 41 Dynamic Accuracy at Low Frequency Available with LFE Option 205 220 420 425 3 43 DC Continuity Test the LFE Board and Test Ports Available with LFE Option 205 220 420 425 3 45 Receiver Noise Figure Test 3 45 Noise State Calibration Coef...

Page 5: ...ting Started with Troubleshooting 4 5 Check the Basics 4 5 Troubleshooting Organization 4 5 Power Up Troubleshooting 4 7 Power Supply Check 4 8 Troubleshooting LCD Display Problems 4 13 Front Panel Troubleshooting 4 15 Front Panel Keypad and RPG Test 4 15 A3 Display Test 4 18 Checking the A2 USB Board 4 19 A1 Front Panel Interface Board 4 20 Rear Panel Troubleshooting 4 22 Checking the USB Ports 4...

Page 6: ...n 6 Synthesizers 4 68 Instrument Block Diagrams 4 Port Sheet 5 Non LFE and DDS Version 7 Synthesizer Assemblies 4 70 Microwave PNA X N5247B 4 Port Non LFE and DDS Version 7 Synthesizer Assemblies 4 70 Instrument Block Diagrams 4 Port Sheet 6 LFE and DDS Version 7 Synthesizer Assemblies 4 72 Microwave PNA X N5247B 4 Port LFE and DDS Version 7 Synthesizer Assemblies 4 72 5 Theory of Operation Inform...

Page 7: ...ration 5 59 Front Panel Subgroup 5 61 Data Acquisition and Processing Subgroup 5 62 Power Supply Group Operation 5 64 Noise Measurement Group Operation Option 029 5 65 A56 Test Port 1 Option 029 Switch 5 65 A64 Test Port 1 Option 029 Tuner 5 65 A57 Test Port 2 Option 029 Switch 5 65 A59 Noise Downconverter 5 65 A9 Noise Receiver Board 5 66 6 Replaceable Parts Information in This Chapter 6 1 Chapte...

Page 8: ...he A18 System Motherboard 7 21 Removing and Replacing the A19 Midplane Board 7 24 Removing and Replacing the A20 Power Supply Assembly 7 26 Removing and Replacing the A21 CPU Board Assembly 7 28 Removing and Replacing the A22 GPIB Board 7 30 Removing and Replacing the A23 Test Set Motherboard 7 32 Removing and Replacing the A24 IF Multiplexer Board 7 34 Removing and Replacing the A25 HMA26 5 7 36 ...

Page 9: ...ir Procedures 7 92 Resetting the Mechanical Counter 7 101 EEPROM Backup 7 102 8 General Purpose Maintenance Procedures Information in This Chapter 8 1 Chapter Eight at a Glance 8 1 Conventions Used for Hardkeys Softkeys and Menu Items 8 1 Error Terms 8 2 Using Error Terms as a Diagnostic Tool 8 2 Performing Measurement Calibration 8 3 Using Flowgraphs to Identify Error Terms 8 3 Accessing Error Te...

Page 10: ...10 Keysight N5247B Service Guide Contents ...

Page 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...

Page 12: ...rd 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 b...

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

Page 14: ...he product must not be restricted The ambient temperature outside the cabinet must 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 des...

Page 15: ...ble 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 it is being opened The detachable power cord is the instrument disconnecting device It disconnects the mains circuits from the mains supply before other parts of the ...

Page 16: ...1 6 Keysight N5247B Service Guide Safety and Regulatory Information General Safety Considerations 1 Figure 1 1 Location of Calibration Stickers on PNA ...

Page 17: ...ons 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 t...

Page 18: ...1 8 Keysight N5247B Service Guide Safety and Regulatory Information Electrostatic Discharge Protection 1 Figure 1 2 ESD Protection Setup ...

Page 19: ...tandby position of the power line switch This symbol marks the ON position of the power line switch This symbol marks the OFF position of the power line switch This symbol indicates that the input power required is AC This symbol indicates DC voltage This symbol indicates a three phase alternating current This symbol indicates Frame or chassis Terminal The instruction documentation symbol The prod...

Page 20: ...t The CSA mark is a registered trademark of the CSA International Two person lift required Canada EMC label Interference Causing Equipment Standard for industrial scientific and medical ISM equipment Matériel industriel scientifique et médical ISM CE ICES ISM label Old mark for reference only This is a space saver label that combines three markings CE with CAN ICES and ISM see above and ISM see be...

Page 21: ... mark indicates product has been designed to meet the requirements of IP x y where x is the solid particle protection and y is the liquid ingress protection Samples of this product have been type tested in accordance with the Keysight Environmental Test Manual and verified to be robust against the environmental stresses of storage transportation and end use those stresses include but are not limit...

Page 22: ... Contacting Keysight on page 2 7 for assistance For instructions on removing and replacing the battery on the A21 CPU board assembly refer to Removing and Replacing the Lithium Battery on page 7 90 Operating Altitude 0 to 4 600 meters 15 000 feet Relative humidity Type tested 0 to 95 at 40 C non condensing In conditions of very high humidity below 95 at changing temperature there is a small risk o...

Page 23: ...es and Upgrades 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 Intern...

Page 24: ...ntenance Electrical Maintenance Refer to Review the Principles of Connector Care on page 3 5 To prevent electrical shock disconnect the analyzer from the mains source before cleaning Use a dry cloth or one slightly dampened with water to clean the external case parts Do not attempt to clean internally ...

Page 25: ...ve 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 for t...

Page 26: ...ignal generator CW Freq 1 185 GHz N5181A Option 503 E8257D Option 520 P A T Power meter Accuracy 0 0068 dB N1913A 14A E4418A B d If an accurate measurement of the dynamic accuracy specification is not required the E4418A or E4419A can be used P A T Power sensor Freq 10 MHz to 4 2 GHz Range 30 to 20 dBm N8482A 8482A P A T Power sensor Freq 50 MHz to 40 or 50 GHz Range 30 to 20 dBm N8487A 8487A P A ...

Page 27: ...None P A T 2 4 mm f to Type N f d Return Loss 28 dB 11903B None P A T Attenuators 1 85 mm m f 10 dB fixed attenuator Freq DC to 67 GHz 8490G Option 010 None P 1 85 mm m f 20 dB fixed attenuator Freq DC to 67 GHz 8490G 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 System verificati...

Page 28: ...pen 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 other...

Page 29: ...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 SO IEC 17025 or ANSI NCSL Z540 3 2006 standards compliant calibrations are available After calibration the analyzer ...

Page 30: ...materials may result in non warranted damage Contact Keysight for instructions on where to ship your analyzer In any correspondence or telephone conversation refer to the Keysight product by its model number and full serial number With this information the Keysight representative can determine whether your product is still within its warranty period To contact Keysight for sales and technical supp...

Page 31: ... following conventions are used in this document Chapter Three at a Glance This represents a hardkey a key that is physically located on the instrument This represents a tab whose label is determined by the instrument firmware 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...

Page 32: ...fication The ANSI NCSL Z540 3 2006 and ISO IEC 17025 process of verifying your analyzer page 3 10 Non Standards Compliant Verification The Non Standards Compliant process of verifying your analyzer page 3 11 Preliminary Checks Performing the operator s check Checking your test cables Perform these checks before performing system verification page 3 12 System Verification What the system verificati...

Page 33: ...st Ports Available With Low Frequency Extension LFE Installed Option 205 425 page 3 32 Adjustmentsb Setups and procedures for adjusting your analyzer Touchscreen Adjustment and Verification 10 MHz Frequency Reference Adjustment Synthesizer Bandwidth Adjustment Source Adjustment IF Gain Adjustment Receiver Characterization Receiver Adjustment EE Default Adjustment IF Response Adjustment Available O...

Page 34: ...ature 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 maxim...

Page 35: ... minutes Cleaning connectors with alcohol shall only be done with the instrument 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 Handling and Storage Do Keep connectors clean Do Not Touch mating plane surfaces Extend sleeve or connector nut ...

Page 36: ...ntact lightly Over tighten preliminary connection Turn only the connector nut Twist or screw any connection Use a torque 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 en...

Page 37: ...he 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 measurement...

Page 38: ...ication kit has a traceable path to NIST The total measurement uncertainty limits for the performance verification are the sum of the factory measurement uncertainties and the uncertainties associated with measuring the same devices on the system being verified The difference between the factory measured data and the verification measured data must fall within the total uncertainty limits at all f...

Page 39: ...cifications 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 you ...

Page 40: ...stopping to repair or adjust1 Refer to Figure 3 1 for test flow Print data at the completion of all the tests even if you are aware that the analyzer did not pass If there is a failure complete the verification before you troubleshoot repair and adjust After the failure has been corrected repeat the entire set of performance tests and generate a new set of data Figure 3 1 ANSI NCSL Z540 3 2006 and...

Page 41: ...erification perform the preliminary checks and the performance tests while stopping to troubleshoot Refer to Figure 3 2 for test flow Troubleshoot and repair the first problem encountered without continuing to other tests After you troubleshoot repair and adjust repeat the last failed portion and generate a new set of data Figure 3 2 Non Standards Compliant Verification Flowchart ...

Page 42: ...nuators 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 in...

Page 43: ... 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 ...

Page 44: ...3 14 Keysight N5247B Service Guide Tests and Adjustments Preliminary Checks 3 Figure 3 3 Operator s Check Dialog Boxes ...

Page 45: ...cessories Used in the Test Port Cable Checks Cable Return Loss Check 3 Press UTILITY 4 Perform a one port calibration on Port 1 1 Port Reflection Refer to the embedded help in the analyzer if 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 of the...

Page 46: ...LUS 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 calibr...

Page 47: ...er left corner of the dialog box Save the cable S2P file 9 Retrieve the saved cable S2P to plot out the insertion loss trace S2P data also can be viewed directly on the PNA by pressing UTILITY Refer 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 m...

Page 48: ... 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 Fac...

Page 49: ...play Set the Scale Per Division for optimum viewing as shown in Figure 3 7 12 Place a marker on the largest deflection that goes above the reference line and is within the cable s specified frequency 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 fr...

Page 50: ...er 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 Referenc...

Page 51: ... 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 th...

Page 52: ...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 pri...

Page 53: ... 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 is...

Page 54: ...e 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 thr...

Page 55: ...n this chapter that show the performance of good cables It is highly recommended that the test port cables be regularly tested For system verification to perform correctly it is NECESSARY that the 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 parameters are measured the S1...

Page 56: ...ter ensure that the correct driver is loaded and the printer is defined as the default printer Refer to the embedded help in the analyzer for printer setup Let the analyzer warm up for at least 90 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 Dial...

Page 57: ... 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 If ...

Page 58: ...ge 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 de...

Page 59: ...ts 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 ...

Page 60: ...m 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 Fig...

Page 61: ...Keysight N5247B Service Guide 3 31 Tests and Adjustments System Verification Figure 3 13 Example of Printed Graphical Verification Results ...

Page 62: ...ower 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 Dynamic Accuracy at Low Frequency Available with LFE Option 205 220 420 425 Dynamic Accuracy at Low Frequency Available with LFE Option 205 220 420 425 Receiver Noise Figure Tes...

Page 63: ... points for the test to pass If the Analyzer Fails this Test Perform the Source Adjustment on page 3 56 and repeat this test If the analyzer still fails this test troubleshoot the source section of the analyzer and then repeat this test Refer to Checking the Source Group on page 4 35 Source Maximum Power Output Test Function of the Test To confirm the maximum source output power of your network an...

Page 64: ...le 20 dB attenuator if the analyzer does not have an internal step attenuator Description of the Test Ports 1 and 2 are tested as a pair The Port 2 receiver is used to test the linearity of the source power 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...

Page 65: ...gh a series of frequency doublers These doublers exactly double the source 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...

Page 66: ...t cable is connected between 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 an...

Page 67: ...t 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 end of the test cable 5 For a series of CW frequencies across the analyzer s full frequency range the source output level is adjusted to ac...

Page 68: ... 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 source port when measuring the noise floor of Ports 2 3 and 4 1 The analyzer is Preset 2 The analyzer is set up for a ...

Page 69: ...and then repeat this test Refer to Removing and Replacing the A4 A17 Boards on page 7 18 Calibration Coefficients Test Function of the Test To verify the uncorrected calibration coefficients of your analyzer The calibration coefficients are specified at the test port without any cables so calibrations must be performed in both the forward and reverse directions to eliminate the effects of the test...

Page 70: ...rsion 2 Function of the Test To measure the relative power linearity of the analyzer s receivers Specification Tested Test Port Input Dynamic Accuracy Equipment Used Z5623A Option H01 dynamic accuracy test set Power meter Power sensor Two test cables Description of the Test 1 The analyzer s test ports are tested separately at a specific CW frequency and a reference power level of 20 dBm 2 The anal...

Page 71: ...f the analyzer fails this test repeatedly replace the A23 mixer brick for a Port 1 or Port 2 failure or the A24 mixer brick for a Port 3 or Port 4 failure then repeat this test Refer to Removing and Replacing the A27 and A28 Mixer Bricks on page 7 41 If the analyzer still fails this test replace the A12 SPAM board and repeat this test Refer to Removing and Replacing the A4 A17 Boards on page 7 18 ...

Page 72: ...d on and the signal generator s frequency is set to 2 Hz above the analyzer s frequency By combining these two signals together the resultant signal will be a perfect sine wave with a magnitude which varies from 17 dBm to 23 dBm at a rate of 2 Hz 5 The analyzer s receiver measurement is retrieved and compared with a perfect sine wave Any deviation is due to receiver non linearity 6 The test set s ...

Page 73: ...t is not required Specification Tested Dynamic Accuracy at Low Frequency Equipment Used Function generator 33622A Power splitter 11667B Fixed attenuator 10dB x2 8493C Option 010 Four test cables Description of the Test 1 Your model PNA may not have available all of the LFE Options listed Due to the complexity of the PNA family of analyzers the following notes apply to illustrations in the PNA Help...

Page 74: ...ng the A70 or A75 Low Frequency Extension LFE Board on page 7 72 If the analyzer still fails this test replace the A70 LFE board and repeat this test Refer to Removing and Replacing the A70 or A75 Low Frequency Extension LFE Board on page 7 72 If the analyzer fails this test repeatedly replace the A23 mixer brick for a Port 1 or Port 2 failure or the A24 mixer brick for a Port 3 or Port 4 failure ...

Page 75: ... 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 bandwidth using hundreds of points across the full frequency range of the noise receiver 4 The ENR data file for the noise...

Page 76: ...Noise State Calibration Coefficients Noise Jitter Test Function of the Test To measure the stability of a signal in the internal noise receiver system Specification Tested Test Port Input Option 029 Noise Jitter Equipment Used Load standard Description of the Test Noise jitter is a calculation of the standard deviation of a 201 point CW measurement using the noise receiver In a healthy analyzer th...

Page 77: ...7 Boards on page 7 18 Noise Receiver Linearity Test Function of the Test To measure the relative power linearity of the analyzer s noise receiver Specification Tested Test Port Input Option 029 Noise Receiver Linearity Equipment Used Z5623 Opt H01 dynamic accuracy test set Signal generator Power meter Power sensor Two test cables Description of the Test The linearity of the noise receiver is teste...

Page 78: ...ated as Pe Pmr Pmd Par Pad 8 A2 is incremented 10 dB A1 is set to 0 dB and the signal generator s source power is adjusted until the receiver power level is exactly the same as it was before the attenuators were switched 9 New power meter and analyzer receiver reference readings are recorded The process is repeated until the total attenuation reaches the minimum test level 10 The process is reset ...

Page 79: ...frequency power sensor a source power calibration is performed at the end of the cable for dozens of frequency points The power level is set between 9 and 18 dBm at a multiple of 10 dB above the specified compression level 4 This process is repeated for each of the three gain stages since each stage requires a different power setting 5 Steps 3 and 4 are repeated using the high frequency power sens...

Page 80: ...d as the linearity standard for this measurement 14 Steps 11 to 13 are repeated for each of the three gain stages If the Analyzer Fails this Test A failure of this test indicates a fault in the noise receiver chain This can indicate a faulty assembly or a loose cable Check for proper torquing of all semi rigid cables in the receiver chain and then repeat this test If the analyzer still fails this ...

Page 81: ... the source which has sufficient power range to cover each power step Therefore a test set is not required Specification Tested Dynamic Accuracy at Low Frequency Equipment Used Function generator 33622A Power splitter 11667B Fixed attenuator 10dB x2 8493C Option 010 Four test cables Description of the Test Due to the complexity of the PNA family of analyzers the following notes apply to illustrati...

Page 82: ...5 on page 3 53 and to Removing and Replacing the A70 or A75 Low Frequency Extension LFE Board on page 7 72 If the analyzer still fails this test replace the A70 LFE board and repeat this test Refer to Removing and Replacing the A70 or A75 Low Frequency Extension LFE Board on page 7 72 If the analyzer fails this test repeatedly replace the A23 mixer brick for a Port 1 or Port 2 failure or the A24 m...

Page 83: ...probe to the center conductor of the RF port 1 on the front panel 2 Connect the other test probe to the port 1 bias input BIAS 1 IN on the rear panel 3 Verify the DVM measures 10Ω 4 Repeat these steps for each of the other test ports If the DVM value is 0Ω or 10Ω then something is incorrectly installed or there is an open or short somewhere in the LFE board cable path Verify the gray DC bias cable...

Page 84: ...th Option 029 with S93029A B Installed on page 3 62 These adjustments are described on the following pages Touchscreen Adjustment and Verification The touchscreen adjustment calibration is used to correct the touchscreen accuracy when you replace your front panel or your SSD Refer to Calibration Procedure The touchscreen verification can be run to verify the touchscreen has been correctly calibrat...

Page 85: ...e 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 Adjustment Procedure 1 Connect the equipment as shown in Figure 3 16 Connect a GPIB cable between the network analyzer and the frequency counter If your display fail...

Page 86: ...er Bandwidth Adjustment This adjusts the bandwidth of the 13 5 GHz synthesizers Procedure 1 Press UTILITY 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 there...

Page 87: ...er Power meter E4418B E4419B E4418A E4419A Power sensor Type N 8482A None Power sensor 2 4 mm 8487A None Power sensor V Banda a This sensor and adapter must be calibrated together by the Keysight factory The data supplied is only valid as long as the sensor and adapter remain connected V8486A None Adapter WR 15 to 1 85 mm m V281B None Adapter 1 85 mm f to 1 85 mm f 85058 60114 None Adapter 2 4 mm ...

Page 88: ...sh a reference for flatness 2 A cable is inserted between the power sensor and the test port as shown in Figure 3 19 to establish a reference for the cable 3 The same cable is connected between test port 1 and test port 2 as shown in Figure 3 20 and a signal from Port 1 is used to adjust the B receiver at Port 2 The adjustment is repeated using a signal from Port 2 to adjust the A receiver at Port...

Page 89: ...er sensor 2 4 mm 8487A None Power sensor V Banda V8486A None Adapter WR 15 to 1 85 mm m V281B None Adapter 2 4 mm f to 2 4 mm f 11900B 85056 60007 Adapter Type N f to 2 4 mm f b 11903B None Adapter 1 85 mm f to 1 85 mm f 85058 60114 None Test cable 2 4 mm f to 2 4 mm f 85133C 85133E Test cable 1 85 mm f to 1 85 mm f N4697E N4697 60200 a This sensor and adapter must be calibrated together by the Ke...

Page 90: ...ent 3 Ensure the GPIB settings are correct 4 Follow the instructions and prompts as they are displayed Figure 3 19 Equipment Setup 2 for the Receiver Adjustment Figure 3 20 Equipment Setup 3 for the Receiver Adjustment EE Default Adjustment This sets the EEPROM data to their default values System Service Adjustment Routines ...

Page 91: ...ss UTILITY then then then click IF Response Adjustment 2 Follow the instructions and prompts as they are displayed LFE Receiver Adjustment Option 425 1 The LFE Receiver adjustment is required when upgrading to Option 205 220 405 420 and 425 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 L...

Page 92: ...y 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 21 Option 029 enables noise figure measurements up to 50 GHz Equipment Type Model or Part Number Power Meter N1914...

Page 93: ... meter If using a single channel power meter use the default setting Ch 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 21 PNA Noise Adjustment Dialog Box 3 Click Begin 4 As shown in Figure 3 22 connect an RF cable between the network analyzer test p...

Page 94: ...t the cable from port 2 and connect it to the power sensor See Figure 3 23 Figure 3 23 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 24 ...

Page 95: ...Keysight N5247B Service Guide 3 65 Tests and Adjustments Adjustments Figure 3 24 Equipment Setup 3 for the Receiver Adjustment The entire procedure takes about 30 to 45 minutes ...

Page 96: ...3 66 Keysight N5247B Service Guide Tests and Adjustments Adjustments 3 ...

Page 97: ...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 ...

Page 98: ...urring after the network analyzer interface is loaded Does the display color appear correct Do the front panel keys function properly Does the front panel USB connector function properly page 4 15 Rear Panel Troubleshooting Problems associated with the rear panel interconnects The data found at these rear panel interconnects can be used to troubleshoot the CPU board page 4 22 Measurement System Tr...

Page 99: ... Instrument Block Diagrams 4 Port Sheet 4 LFE and Non DDS Version 6 Synthesizers on page 4 68 Instrument Block Diagrams 4 Port Sheet 5 Non LFE and DDS Version 7 Synthesizer Assemblies on page 4 70 Instrument Block Diagrams 4 Port Sheet 6 LFE and DDS Version 7 Synthesizer Assemblies on page 4 72 Block diagrams for the analyzer including all options page 4 56 page 4 62 page 4 64 page 4 66 page 4 68 ...

Page 100: ...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 Do not operate the analyzer with the outer cover removed for more ...

Page 101: ... Is the Windows operating system running If not refer to Operating System Recovery in Chapter 8 for instructions 4 If other equipment cables and connectors are being used with the instrument make sure they are clean connected properly and operating correctly 5 Review the procedure for the measurement being performed when the problem appeared Are all the settings correct If not correct them 6 If th...

Page 102: ...bleshooting Getting Started with Troubleshooting 4 Figure 4 1 Troubleshooting Organization Flowchart Go to Power Up Troubleshooting Go to Front Panel Troubleshooting Go to Rear Panel Troubleshooting Go to Measurement System Troubleshooting ...

Page 103: ... 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 15 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 8 If you cannot hear t...

Page 104: ...ltage is missing 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 10 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...

Page 105: ...o 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 could result in costly damage any one individual voltage supply from the A20 power supply develops an over voltage or over current problem all supplies are affected The cause of the over voltage or over current conditio...

Page 106: ...he A23 Test Set Motherboard on page 7 32 2 Unplug the A23 test set motherboard to A24 IF multiplexer board ribbon cable from the A24 IF multiplexer board refer to Removing and Replacing the A24 IF Multiplexer Board on page 7 34 Table 4 1 Power Supply Measurement Points Test Point Supply Name Expected Level Vdc Test Point Supply Name Expected Level Vdc TP517 Analog Ground 0 V TP516 5 2 V analog 5 2...

Page 107: ...refer to Removing and Replacing the A4 A17 Boards on page 7 18 11 Remove the A22 GPIB board refer to Removing and Replacing the A22 GPIB Board on page 7 30 Reinstall the A20 power supply assembly and the A21 CPU board assembly 12 Unplug the A55 solid state drive from the A21 CPU board refer to Removing and Replacing the A55 Solid State Drive SSD on page 7 60 The minimum required assemblies to powe...

Page 108: ... 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 1 Remove the fan bracket with fans attached from the analyzer to expose the fan power cable connections on the A18 system motherboard Refer to Figure 4 3 for location of these connections Refer to Removing a...

Page 109: ...spect 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 18 1 If the display is dim the A3 display assembly is defective Refer to Removing ...

Page 110: ...bable 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 8 4 If the front panel interface ribbon cable is properly conne...

Page 111: ...oubleshooting on page 4 7 Refer to the following sections to verify the operation of the noted assemblies Front Panel Keypad and RPG Test on this page A3 Display Test on page 4 18 Checking the A2 USB 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 22 Front Panel Keypad and RPG ...

Page 112: ...ad is working If some of the keys are not working suspect a faulty keypad To replace the keypad refer to Removing the A1 Front Panel Interface Board and Keypad Assembly on page 7 10 If none of the keys are working correctly suspect a faulty touchscreen controller board or the A1 front panel interface board To replace the touchscreen controller board refer to Removing the Touchscreen Controller Boa...

Page 113: ... 171 T p 242 k m 232 Display 238 Navigationa Keys Keypad Code 7 182 0 206 Setup 241 Knob CW 101 8 183 decimal point 207 RESPONSE Keys Keypad Code Know CCW 102 9 176 201 Meas 179 Click Rotary Knob press 159 G n 177 Enter Off 193 Format 180 151 4 190 UTILITY Keys Keypad Code Scale 181 150 5 191 Save Recall 203 Math 197 152 6 184 Macro 213 Avg BW 172 158 M u 185 Undo 243 Cal 173 System 231 Marker 187...

Page 114: ... board or the A1 front panel interface board To replace the RPG board refer to Removing the RPG Assembly on page 7 10 To replace the A1 front panel interface board refer to Removing the A1 Front Panel Interface Board and Keypad Assembly on page 7 10 5 When done to close the Key Label window and return to the instrument display press Preset three times A3 Display Test The display should be bright w...

Page 115: ...nty of the total pixels have a constant blue green red or black appearance that will not change Three or more consecutive pixels and or any two faulty pixels within 15 mm of each other have a constant blue green red purple black and or other colors appearance that will not change Also for the Gray gradient screen verify their are no black vertical horizontal lines If the A3 display assembly is det...

Page 116: ... the keypad to the A17 CPU board It routes display signals from the A17 CPU board to the A3 display assembly Checking the Speaker If no audio is heard Verify that the volume is set correctly and the proper sound driver is loaded do the following 1 Press File Minimize Application then press the Speaker icon on the Windows Toolbar 2 The windows slider opens Verify the volume is not muted then slide ...

Page 117: ...Keysight N5247B Service Guide 4 21 Troubleshooting Front Panel Troubleshooting Checking the Display To verify the display functionality refer to A3 Display Test on page 4 18 ...

Page 118: ...e 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 Instrume...

Page 119: ...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 progr...

Page 120: ...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 26 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 in...

Page 121: ...atistics 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 comm...

Page 122: ...ver cable is not available a crossover cable can be made by following the directions in Constructing a Crossover Cable on page 4 26 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 cros...

Page 123: ... 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 Most...

Page 124: ...4 28 Keysight N5247B Service Guide Troubleshooting Rear Panel Troubleshooting 4 Figure 4 6 Construction of a Crossover Cable ...

Page 125: ...te 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 error ...

Page 126: ...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 7 If the information is incorrect for any of the PC boards contact Keysight Technologies Refer to Contacting Keysight on page 2 7 Figure 4 7 EEPROM Header Info Dialog Window Error Messages SOURCE UNLEVELED The source ALC circuit on the A23 t...

Page 127: ...yed in four separate data windows as shown in Figure 4 8 Identifying discrepancies of the traces in these windows can help you to isolate the faulty assembly Figure 4 8 Typical 4 Receiver Display for 2 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 9 Identifying discrepancies of the traces in these windows...

Page 128: ...nalyzer 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 Tro...

Page 129: ... A72 A73 or A74 bias combiner A33 A34 A35 and A36 test port couplers A23 test set motherboard the receiver group A37 reference mixer switch A46 A47 A48 and A49 35 dB receiver step attenuators optional A27 and A28 mixer bricks A16 SPAM board A24 IF multiplexer board A23 test set motherboard Use the list on the following pages to help you determine in which analyzer functional group to begin trouble...

Page 130: ...ck Device Manager and then expand Keysight PNA DSP Device in the resulting list The following entry should be listed Keysight Technologies DSP Driver 2 and should be enabled 2 If the entry is not present or if the icon to the left of the name is a yellow box containing an exclamation mark navigate the following directories and verify the presence of the following file C WINNT system32 drivers spam...

Page 131: ...r This Check Use an antistatic work surface and wrist strap to reduce the chance of electrostatic discharge for all of the procedures in this chapter Procedures described in this document are performed with power supplied to the product while protective covers are removed Energy available at many points may if contacted result in personal injury Do not operate the analyzer with the outer cover rem...

Page 132: ...d on the power meter it should be the preset power level 1 dB 2 Connect the power sensor in turn to Ports 2 3 and 4 and set trace to measure S22 S33 and S44 respectively Note the power reading displayed on the power meter If the power level is low or high on all test ports the problem is LO signal related Continue with Checking the A14 50 MHz Reference Outputs If the power level is low or high on ...

Page 133: ...4 and A17 Source Synthesizer Outputs on page 4 43 Checking the A15 Direct Digital Synthesizer DDS Assembly Outputs2 The instrument must be sufficiently reassembled so it can be safely powered up 1 Power up the instrument 2 Note any error messages in the bottom right hand corner of the PNA s display e g A power on self test error has occurred Please contact Refer to Figure 4 10 on page 4 38 3 A log...

Page 134: ... A15 DDS assembly are connected properly d Repeat steps 1 through 3 e If the instrument still has a similar Slug failure then the DDS is faulty and needs to be replaced 5 If the A15 DDS assembly is faulty contact Keysight Technologies for help Refer to Contacting Keysight on page 2 7 Figure 4 10 Example of Power On Self Test Error ...

Page 135: ...5 13 5 GHz LO Synthesizer Output1 1 Refer to the block diagram at the end of this chapter and to Top Cables All Cables All Options S N Prefixes 6021 on page 6 21 Locate the flexible cable W51 at the A15 LO synthesizer board 2 Disconnect W51 from J1207 3 Connect the spectrum analyzer to J1207 1 A15 13 5 GHz LO Synthesizer board only applies to instruments with serial number prefixes 6021 ...

Page 136: ... HMA26 5 Output 1 Refer to the block diagram at the end of this chapter and to 4 Port Configuration Serial Number Prefixes 6021 on page 6 84 or in 4 Port Configurations Serial Number Prefix 6021 on page 6 136 Locate the semirigid cable W52 4 port models with a legacy HMA26 5 or W80 2 port models and for all models with a new HMA26 5 at the A25 HMA26 5 2 Disconnect W52 4 port models with a legacy H...

Page 137: ... is present reconnect cable W52 or W80 and then for 2 port models continue checking with Checking the Receiver Group on page 4 52 for 4 port models continue checking with Checking the A26 Splitter Output Verify the Model Version of HMA26 5 Installed The installed components in your PNA model may be either using the legacy HMA26 5 part number 5087 7765 or if your PNA is using the newer HMA26 5 part...

Page 138: ...4 42 Keysight N5247B Service Guide Troubleshooting Measurement System Troubleshooting 4 Figure 4 12 Comparison of Legacy HMA26 5 5087 7765 and New HMA26 5 N5240 60101 ...

Page 139: ...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 signal is not present but the signal from Checking the A25 HMA26 5 Output is present replace the A26 splitter Refer to Removing and Replacing the A26 Splitter on page 7 39 7 If the signal is present reconnect cables W53 and W54 and then continue with Checking the Recei...

Page 140: ... 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 40 GHz Doubler board 3 Connect the spectrum analyzer to the open connector at the end of the ...

Page 141: ...g 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 signal is not present but the signals from Checking the A4 and A17 Source Synthesizer Outputs are present replace the appropriate doubler board Refer to Removing and Replacing the A4 A17 Boards on page 7...

Page 142: ...rather than broadband related set the PNA output frequency to the center of the problem band The spectrum analyzer should display a signal above the PNA 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 signal is not present but the signals descri...

Page 143: ...to 900 Hz Figure 4 13 LFE Block Diagram Single Port Configuration Shown Other Ports are Similar Checking the Signal Separation Group Before checking the signal separation group assemblies you must open the analyzer 1 Turn off the analyzer power 2 Unplug the power to the analyzer and disconnect all front and rear panel connections except installed jumpers Use an antistatic work surface and wrist st...

Page 144: ...ter user s guide for instructions on setting the calibration factor 2 If the Receiver Display Figure 4 8 or Figure 4 9 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 prod...

Page 145: ...orrect go to Checking the Receiver Group on page 4 52 If the measured power is not correct go to Checking the Signal through the Signal Separation Path on page 4 49 Checking the Signal through the Signal Separation 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 Configurations Serial Number Prefixes...

Page 146: ...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 torque wrench disconnect the semirigid cable at the reference coupler 3 Connect the spectrum analyzer to the open reference coupler connector Set the spectrum analyzer to measure a signal at 800 MHz 4 If the 800 MHz signal is not present and the analyzer has mech...

Page 147: ...41 Port 3 W86 of A39 Port 4 W90 of A40 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 signal at 800 MHz 4 If the 800 MHz signal is not present replace the source step attenuator Refer to Removing and Replacing the A38 A41 Source Attenuators and the A...

Page 148: ...hecks refer to the block diagrams at the end of this chapter and to any of the following that are appropriate 2 Port Configurations Serial Number Prefixes 6021 on page 6 31 4 Port Configuration Serial Number Prefixes 6021 on page 6 84 2 Port Configurations Serial Number Prefixes 6021 on page 6 58 4 Port Configurations Serial Number Prefix 6021 on page 6 136 Getting Ready to Test Before checking th...

Page 149: ...62 of A27 Receiver R2 W63 of A27 Receiver B W64 of A27 Receiver C W68 of A28 Receiver R3 W67 of A28 Receiver R4 W66 of A28 Receiver D W65 of A28 2 Disconnect the flexible cable at the suspect receiver 3 Connect the spectrum analyzer to the suspect receiver connector 4 Refer to the NOTE notice on page 4 29 The measured signal on the spectrum analyzer should be at 7 61 MHz analyzers with DSP version...

Page 150: ...SOURCE OUT connector 2 If the measured signal is present replace the A27 mixer brick Refer to Removing and Replacing the A27 and A28 Mixer Bricks on page 7 41 3 If the measured signal is not present replace the A37 reference mixer switch Refer to Removing and Replacing the A37 Reference Mixer Switch on page 7 48 Checking the A46 A47 A48 and A49 35 dB Receiver Step Attenuators 1 Locate the appropri...

Page 151: ... 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 29 The measured signal on the spectrum analyzer should be at 7 61 MHz analyzers with DSP version 4 0 or 7 44 MHz analyzers with DSP version 5 0 and 1 GHz 5 If the measured signal is present replace the A16 SPAM board Ref...

Page 152: ...iagrams LFE 4 Instrument Simplified Block Diagrams LFE1 2 Port N5290A System Block Diagram 201 and 205 Figure 4 14 System Block Diagram Legend Figure 4 15 2 Port N5290A System Simplified Block Diagram 201 and 205 1 Your model PNA may not have available all of the LFE Options listed ...

Page 153: ...sight N5247B Service Guide 4 57 Troubleshooting Instrument Simplified Block Diagrams LFE 2 Port N5290A System Block Diagram 202 and 205 Figure 4 16 2 Port N5290A System Simplified Block Diagram 202 and 205 ...

Page 154: ...4 58 Keysight N5247B Service Guide Troubleshooting Instrument Simplified Block Diagrams LFE 4 4 Port N5290A System Block Diagram 401 Figure 4 17 4 Port N5290A System Simplified Block Diagram 401 ...

Page 155: ...Keysight N5247B Service Guide 4 59 Troubleshooting Instrument Simplified Block Diagrams LFE Figure 4 18 4 Port N5290A System Simplified Block Diagram 402 ...

Page 156: ...4 60 Keysight N5247B Service Guide Troubleshooting Instrument Simplified Block Diagrams LFE 4 Figure 4 19 4 Port N5290A System Simplified Block Diagram 403 ...

Page 157: ...Keysight N5247B Service Guide 4 61 Troubleshooting This page left intentionally blank ...

Page 158: ...ting Instrument Block Diagrams 2 Port Sheet 1 Non LFE and Non DDS Version 6 Synthesizers 4 Instrument Block Diagrams 2 Port Sheet 1 Non LFE and Non DDS Version 6 Synthesizers Microwave PNA X N5247B 2 Port Non LFE and Non DDS Version 6 Synthesizers ...

Page 159: ... W24 W25 W26 W53 W69 RF2 OUT J12 EXT TEST SET DRIVE RF2 OUT W67 W68 3 2 19 GHz W91 W92 W93 W94 W95 W96 W97 W98 J2 J4 J401 J500 3 2 19 GHz 3 2 19 GHz 19 26 5 GHz B36 37 B38 B32 35 P2 B39 48 20 35 GHz B44 48 10 MHz to 40 GHz B2 38 W15 W16 Modulator Control Detector Feedback Modulator Control Detector Feedback Modulator Control Detector Feedback Modulator Control Detector Feedback 13 5 19 GHz IF 0 82...

Page 160: ...rument Block Diagrams 2 Port Sheet 2 Non LFE and DDS Version 7 Synthesizer Assemblies 4 Instrument Block Diagrams 2 Port Sheet 2 Non LFE and DDS Version 7 Synthesizer Assemblies Microwave PNA X N5247B 2 Port Non LFE and DDS Version 7 Synthesizer Assemblies ...

Page 161: ...GATES 10 7 MHz Pulse B PULSE GATES 10 7 MHz Pulse R PULSE GATES 10 7 MHz Pulse C PULSE GATES 10 7 MHz Pulse D LFE IF R P804 LFE IF D P604 LFE IF C P404 LFE IF R P204 LFE IF B P4 LFE IF A LFE RF PORT 1 LFE RF PORT 1 B27 29 13 5 19 GHz B30 40 9 5 20 GHz B41 52 10 17 5 GHz B27 29 13 5 19 GHz B30 40 9 5 20 GHz B41 52 10 17 5 GHz 10 MHz REF x 192 100 MHz HIGH STAB A15 SYNTHESIZER ASSEMBLY FREQUENCY REF...

Page 162: ...ting Instrument Block Diagrams 4 Port Sheet 3 Non LFE and Non DDS Version 6 Synthesizers 4 Instrument Block Diagrams 4 Port Sheet 3 Non LFE and Non DDS Version 6 Synthesizers Microwave PNA X N5247B 4 Port Non LFE and Non DDS Version 6 Synthesizers ...

Page 163: ... 0 75 1 5 GHz 350 750 MHz 25 60 MHz 10 25 MHz 150 350 MHz 60 150 MHz 1 5 3 0 GHz A9 NOISE RECEIVER W171 W172 W173 R I L 31 6 MHz 31 6 MHz 12 MHz TO A14 ADC OPTION 029 J4 3 0 6 0 GHz 3 0 GHz J6 J1 26 0 32 0 GHz 32 0 40 0GHz 40 0 50 0GHz X2 W114 W113 W116 OPTION 029 A45 BIAS TEE DC BIAS 2 To Port 2 W36 A41 STEP ATTEN 0 50 dB 50 A57 BYPASS SWITCH W166 W168 W169 W167 Port 2 REF 2 REF 1 Port 1 Port 2 P...

Page 164: ...leshooting Instrument Block Diagrams 4 Port Sheet 4 LFE and Non DDS Version 6 Synthesizers 4 Instrument Block Diagrams 4 Port Sheet 4 LFE and Non DDS Version 6 Synthesizers Microwave PNA X N5247B 4 Port LFE and Non DDS Version 6 Synthesizers ...

Page 165: ...N 029 W174 REF 4 REF 3 Port 4 Port 3 W138 W137 W143 SW TSET IN J3 SW SRC OUT J4 rt 3 rt 4 TION 423 From A56 To A56 RECEIVER LO DRIVE W62 A26 SPLITTER W64 W63 W81 W80 W82 OPTION 423 W56 401 W145 419 423 W45 401 W146 419 423 W33 401 W144 419 423 N5247B 4 Port Overall Block Diagram W75 W76 W77 W78 FROM A23 W37 W41 W41 W55 W37 W60 RCVR R4 IN SOURCE OUT W60 RCVR R3 IN SOURCE OUT W54 W60 RCVR D IN CPLR ...

Page 166: ...rument Block Diagrams 4 Port Sheet 5 Non LFE and DDS Version 7 Synthesizer Assemblies 4 Instrument Block Diagrams 4 Port Sheet 5 Non LFE and DDS Version 7 Synthesizer Assemblies Microwave PNA X N5247B 4 Port Non LFE and DDS Version 7 Synthesizer Assemblies ...

Page 167: ...EN W122 W121 OPTION 401 OPTION 419 423 A39 STEP ATTEN 0 50 dB A43 BIAS TEE A40 STEP ATTEN 0 50 dB A44 BIAS TEE A30 RECEIVER COUPLER A31 RECEIVER COUPLER A52 BYPASS SWITCH 50 A35 TEST PORT COUPLER A34 TEST PORT COUPLER PORT 2 PORT 1 PORT 3 PORT 4 4 3 5 5 LOCAL DIGITAL BUS POWER BUS LOCAL DIGITAL BUS POWER BUS P1 FROM A23 W9 W10 W5 W6 FROM A16 THRU A18 TO A24 THRU A18 J802 Ext IF In D J602 Ext IF In...

Page 168: ...g Instrument Block Diagrams 4 Port Sheet 6 LFE and DDS Version 7 Synthesizer Assemblies 4 Instrument Block Diagrams 4 Port Sheet 6 LFE and DDS Version 7 Synthesizer Assemblies Microwave PNA X N5247B 4 Port LFE and DDS Version 7 Synthesizer Assemblies ...

Page 169: ...S 4 A40 STEP ATTEN 0 50 dB A73 BIAS COMBINER LFE RF PORT 3 LFE RF PORT 4 W197 W196 W195 W194 W192 W191 W193 A70 LOW FREQUENCY EXTENSION LFE Combiner and Source Bypass Switches Including Options 425 LFE Attenuators Bias Tees N5247B_blk_DDS_4port_425 TO A71 TO A72 TO A73 TO A74 W134 From rear panel SW TSET IN W131 W133 A51 BYPASS SWITCH W132 50 W138 From rear panel SW TSET IN W135 W137 W136 To rear ...

Page 170: ...4 74 Keysight N5247B Service Guide Troubleshooting Instrument Block Diagrams 4 Port Sheet 6 LFE and DDS Version 7 Synthesizer Assemblies 4 ...

Page 171: ...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 majo...

Page 172: ...p Operation Operation of the assemblies associated with digital processing and digital control page 5 59 Power Supply Group Operation Operation of the power supply assembly group page 5 64 Noise Measurement Group Operation Option 029 Operation of the noise measurement group page 5 65 Section Title Summary of Content Start Page ...

Page 173: ...er 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 source ...

Page 174: ...5 4 Keysight N5247B Service Guide Theory of Operation Network Analyzer System Operation 5 Figure 5 2 2 Port System Simplified Block Diagram Figure 5 3 System Block Diagram Legend LFE Block Diagrams ...

Page 175: ...Keysight N5247B Service Guide 5 5 Theory of Operation Network Analyzer System Operation Figure 5 4 4 Port N5290A System Simplified Block Diagram 401 with LFE ...

Page 176: ...lyzer can be separated into major functional groups Each group consists of assemblies that perform a distinct function in the instrument Some of the assemblies are related to more than one group and all 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 a...

Page 177: ...e at https www keysight com us en assets 9018 04526 data sheets 9018 04 526 pdf N5247 90029 The source group provides five signals an LO signal and four incident signals The LO signal and the four incident signals are offset in frequency by the receiver IF For analyzers with DDS assemblies the receiver IF is 7 438 MHz at tuned frequencies below 53 MHz the IF and the offset is 0 826 MHz LO Behavior...

Page 178: ...C circuit For version 6 synthesizers the maximum output power level of the network analyzer at the test ports is shown in the N5247B 900 Hz 10 MHz to 67 GHz with synthesizer revision 6 or earlier available online at https www keysight com upload cmc_upload All N5247B_Synth6 pdf For version 7 synthesizers the maximum output power level of the network analyzer at the test ports is shown in the N5247...

Page 179: ...n by the digital processing group Refer to Receiver Group Operation on page 5 53 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 provides the output to the display ...

Page 180: ...of the version 7 synthesizer assemblies refer to the N5247B 900 Hz 10 MHz to 67 GHz Data Sheet and Technical Specifications 2 available online at https www keysight com us en assets 9018 04526 data sheets 9018 04 526 pdf N5247 90029 The outputs at the front panel test ports are swept stepped or CW signals Maximum leveled output powers are also listed in the online Keysight document N5247B 900 Hz 1...

Page 181: ...hat is sent through the A25 LO multiplier amplifier 26 5 board to the A27 and A28 mixer bricks via the A26 splitter 1 The frequency is synthesized such that the mixing product of this LO signal with the test signal output is a constant IF signal For analyzers with DSP version 4 0 the IF signal is 7 606 MHz at frequencies below 53 MHz the IF is 2 535 MHz For analyzers with DSP version 5 0 the IF is...

Page 182: ...test signals This makes it possible for the LO signal to be tuned to a different frequency than the test signal With frequency offset mode disabled the LO signal is a frequency value higher than the test signal 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 Since the A4 A15 and A17 13 5 GHz synthesizer boards ...

Page 183: ...Keysight N5247B Service Guide 5 13 Theory of Operation Synthesized Source Group Operation Figure 5 6 Source Group Version 6 Part 1 ...

Page 184: ...t 2 IMPORTANT For Version 6 synthesizers the signals into the A12 and A13 50 GHz Doublers are generated on the A10 Frequency Reference board See figure above For Version 7 synthesizers the signals into the A12 and A13 50 GHz Doublers are generated on the A15 direct digital synthesizer DDS assembly Not shown in figure above See also Figure 5 8 on page 5 20 ...

Page 185: ...to 0 02954 0 019 to 0 027 0 019 to 0 027 0 019 to 0 027 0 019 to 0 027 5 1 0 02954 to 0 04054 0 02954 to 0 04054 0 027 to 0 038 0 027 to 0 038 0 027 to 0 038 0 027 to 0 038 6 1 0 04054 to 0 05554 0 04054 to 0 05554 0 038 to 0 053 0 038 to 0 053 0 038 to 0 053 0 038 to 0 053 7 1 0 06061 to 0 08261 0 06061 to 0 08261 0 053 to 0 075 0 053 to 0 075 0 053 to 0 075 0 053 to 0 075 8 1 0 08261 to 0 11261 ...

Page 186: ... 5 332 4 000 to 5 332 22 1 5 33961 to 6 75961 5 33961 to 6 75961 5 332 to 6 752 5 332 to 6 752 5 332 to 6 752 5 332 to 6 752 23 1 6 75961 to 8 00761 6 75961 to 8 00761 6 752 to 8 000 6 752 to 8 000 6 752 to 8 000 6 752 to 8 000 24 1 8 00761 to 8 50761 8 00761 to 8 50761 8 000 to 8 500 8 000 to 8 500 8 000 to 8 500 8 000 to 8 500 25 1 8 50761 to 10 67161 8 50761 to 10 67161 8 500 to 10 664 8 500 to...

Page 187: ...4 13 250 to 13 504 26 500 to 27 008 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 27 008 to 32 000 38 3 10 66920 to 13 3359 10 66920 to 13 3359 8 000 to 10 000 16 000 to 20 000 32 000 to 40 000 32 000 to 40 000 39 3 13 3359 to 13 5025 13 3359 to 13 50254 10 000 to 10 125 10 250 to 10 125 20 000 to 20 250 40 000 to 40 500 40 3 6 7513 ...

Page 188: ... to 16 000 30 000 to 32 000 60 000 to 64 000 47 3 10 6679 to 11 1679 21 3359 to 22 3359 8 000 to 8 375 16 000 to 16 750 32 000 to 33 500 64 000 to 67 000 48 3 11 1679 to 11 6679 22 3359 to 23 3359 8 375 to 8 750 16 750 to 17 500 33 500 to 35 000 67 000 to 70 000 Table 5 1 Version 6 and Below Synthesizers Subsweep Frequencies Band Mixer Brick L O Harmonic Number N A15 Synthesizer Frequency GHz A25 ...

Page 189: ...t to the A16 SPAM board for digital processing The A15 13 5 GHz DDS assembly produces an incident signal that is sent through the A5 26 5 GHz source board and then through the A7 and A8 doubler boards to the front panel outputs Likewise the A15 13 5 GHz DDS assembly produces a separate incident signal that is sent through the A10 26 5 GHz source board and then through the A12 and A13 doubler board...

Page 190: ...5 20 Keysight N5247B Service Guide Theory of Operation Synthesized Source Group Operation 5 Figure 5 8 Source Group Version 7 Part 1 Example of Option 423 with Option 029 and with Option XSB ...

Page 191: ... to 0 029479 0 019 to 0 027 0 019 to 0 027 0 019 to 0 027 5 1 0 027 to 0 038 0 029479to 0 040479 0 027 to 0 038 0 027 to 0 038 0 027 to 0 038 6 1 0 038 to 0 053 0 040479to 0 055479 0 038 to 0 053 0 038 to 0 053 0 038 to 0 053 7 1 0 053 to 0 075 0 060438to 0 082438 0 053 to 0 075 0 053 to 0 075 0 053 to 0 075 8 1 0 075 to 0 105 0 082438 to 0 112438 0 075 to 0 105 0 075 to 0 105 0 075 to 0 105 9 1 0...

Page 192: ... 8 507438 to 9 527438 8 500 to 9 250 8 500 to 9 250 8 500 to 9 520 24 1 9 520 to 12 000 9 527438 to 12 007438 9 250 to 12 000 9 250 to 12 000 9 520 to 12 000 25 1 12 000 to 13 510 12 007438 to 12 807438 12 000 to 12 800 12 000 to 12 800 12 000 to 12 800 26 1 12 000 to 13 510 12 807438 to 13 517438 12 800 to 13 510 12 800 to 13 510 12 800 to 13 510 27 1 6 000 to 7 600 6 758719 to 7 603719 13 510 to...

Page 193: ...36 100 39 3 7 600 to 9 520 12 035813 to 12 695813 18 050 to 19 040 36 100 to 38 080 36 100 to 38 080 40 3 9 520 to 12 000 12 695813 to 13 335813 19 040 to 20 000 38 080 to 40 000 38 080 to 40 000 41 3 9 520 to 12 000 13 335813 to 13 512479 10 000 to 10 133 20 000 to 20 265 40 000 to 40 530 42 3 9 520 to 12 000 6 756240 to 7 637906 10 330 to 11 455 20 265 to 22 910 40 530 to 45 820 43 3 9 520 to 12...

Page 194: ...0 800 50 3 7 600 to 9 520 10 134573 to 10 667906 15 200 to 16 000 30 400 to 32 000 60 800 to 64 000 51 3 7 600 to 9 520 10 667906 to 11 134573 16 000 to 16 700 32 000 to 33 400 64 000 to 66 800 42 3 7 600 to 9 520 11 134573 to 11 667906 16 700 to 17 500 33 400 to 35 000 66 800 to 70 000 Table 5 2 Version 7 Synthesizer Bands Subsweep Frequencies Band Mixer Brick L O Harmonic Number N A15 Direct Dig...

Page 195: ...0 the swept VCO signal is passed directly to the output of the synthesizer board to produce the output frequencies listed in Table 5 1 on page 5 15 In bands 21 44 the swept VCO signal is passed through a doubler circuit where bands 21 23 29 30 and 37 are sent directly to the output of the synthesizer board while bands 24 28 31 36 and 38 44 are passed through another doubler circuit then to the out...

Page 196: ... each of the DDS Slugs to drive the LO SRC1 SRC2 and SRC3 SRC3 requires Option XSB In bands 2 to 21 the DDS Slug s output is used to produce the output frequencies of 10 MHz to 6 GHz that is transmitted to the DDS assembly multiplier section as listed in Table 5 2 on page 5 21 In bands 21 52 the DDS Slug s signal is passed through a doubler circuit where bands 21 24 27 32 35 43 and 47 52 are sent ...

Page 197: ...ts These signals are passed through to the doubler board output unchanged For bands 29 48 the highband input ports of the A7 and A12 40 GHz doubler boards receive their signals from the A5 and A10 source module P4 outputs These signals are amplified by the A7 and A12 doubler boards and output via the highband output ports to the highband input ports on the A8 and A13 doubler boards For bands 29 38...

Page 198: ...als are passed through the 70 GHz doubler and sent to the combiner The forward combiner then combines both signals to create a full range of 10 MHz to 70 GHz output A25 Multiplier Amplifier 26 5 Board HMA26 5 In bands 2 28 and 36 39 the synthesized LO input is filtered amplified and passed through to the A26 splitter1 4 port only In bands 29 35 and 40 44 the input is amplified doubled and filtered...

Page 199: ...tches back to its internal frequency reference 10 MHz REF OUTPUT s n prefixes 6021 only 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...

Page 200: ... 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 addres...

Page 201: ... 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 Vdc ...

Page 202: ...ogrammable 10 V 100 mA out Nominally 0 ohms 2 44 mV typical resolution 1 MHz BW 4 AnalogOut2 Analog Output Voltage Programmable 10 V 100 mA out Nominally 0 ohms 2 44 mV typical resolution 1 MHz BW 5 ACOM System ground 6 GndSense Ground sense for Analog In and Analog Out Connected with 51 1 ohms to ACOM 7 AnalogIn1 Analog input 10 V 1 22 mV typical resolution Rin 1 M ohm BW 1 MHz ADC conversion tim...

Page 203: ...he Motherboard bus to LFE board connector J1 Outputs LF output J2 900 Hz 100 MHz Port 1 to be connected to the bias combiner Port 1 LF output J3 Port 2 to be connected to the bias combiner Port 2 4 IF outputs J11 J12 J13 J14 to be connected to the LFE inputs of the IF MUX board A B R1 R2 PNA 4 ports The inputs are LFE output of the LO board J102 connected to LFE board J18 LFE output of the Synthes...

Page 204: ...5 34 Keysight N5247B Service Guide Theory of Operation Synthesized Source Group Operation 5 Figure 5 9 Block Diagram with Synthesizer Board and LFE Board Bias combiner Synthesizer ...

Page 205: ...ght N5247B Service Guide 5 35 Theory of Operation Synthesized Source Group Operation Figure 5 10 2 Port with LFE Figure 5 11 4 Port with LFE Bias combiners Synthesizer Bias combiners Synthesizer Synthesizer ...

Page 206: ... 36 Keysight N5247B Service Guide Theory of Operation Synthesized Source Group Operation 5 Figure 5 12 2 Port LFE with IF MUX Board Figure 5 13 4 Port LFE with IF MUX Board Bias combiners Bias combiners ...

Page 207: ...A13 SRC Synthesizer LFE OUT 0 0 000 to 0 0000 1 0 0005 to 0 00095 2 000 to 4 000 4 1048576 4194304 0 00048 to 0 00095 0 00095 to 0 00191 2 000 to 4 000 4 524288 2097152 0 00095 to 0 00191 0 00191 to 0 00381 2 000 to 4 000 4 262144 1048576 0 00191 to 0 00381 0 00381 to 0 00763 2 000 to 4 000 4 131072 524288 0 00381 to 0 00763 0 00763 to 0 01526 2 000 to 4 000 4 65536 262144 0 00763 to 0 01526 0 015...

Page 208: ... 3 9 9000 to 10 01000 2 000 to 4 000 4 64 256 7 81250 to 15 62500 4 10 01000 to 19 99000 2 000 to 4 000 4 64 256 7 81250 to 15 62500 5 1 99000 to 31 25000 2 000 to 4 000 4 32 128 15 62500 to 31 25000 31 5000 to 53 0000 2 000 to 4 000 4 16 64 31 25000 to 62 50000 6 53 0000 to 62 50000 2 000 to 4 000 4 16 64 31 25000 to 62 50000 62 50000 to 1000 0000 2 000 to 4 000 4 8 32 62 50000 to 125 0000 a A15 ...

Page 209: ...e of the LFE options are not available on all models Table 5 7 LFE Bands 2 of 2 S N Prefix 6021 Only Band A15 LO Synthesizer VCO a IF Mode DIV N Synth RF Path Synth RF Output 0 1 2 000 to 4 000 IF2 4 DDS_CLK LFE 2 000 to 4 000 4 DDS_CLK LFE 2 000 to 4 000 4 DDS_CLK LFE 2 000 to 4 000 4 DDS_CLK LFE 2 000 to 4 000 4 DDS_CLK LFE 2 000 to 4 000 4 DDS_CLK LFE 2 000 to 4 000 4 DDS_CLK LFE 2 000 to 4 000...

Page 210: ...000 IF2 4 DDS_CLK LFE 4 10 01000 to 19 99000 Thru 4 DDS_CLK LFE 5 1 99000 to 31 25000 IF1 4 DDS_CLK LFE 31 5000 to 53 0000 4 DDS_CLK LFE 6 53 0000 to 62 50000 IF2 4 DDS_CLK LFE 62 50000 to 1000 0000 4 DDS_CLK LFE a A15 Source synthesizer VCO column only applies to version 6 synthesizers in instruments with a s n prefix 6021 Table 5 7 LFE Bands 2 of 2 S N Prefix 6021 Only Band A15 LO Synthesizer VC...

Page 211: ...ndsa 1 of 2 S N Prefix 6021 Only a A15 Direct Digital Synthesizer DDS assembly column only applies to version 7 synthesizers in instruments with a s n prefix 6021 or that have been updated to version 7 synthesizers Band A15 Direct Digital Synthesizer DDS Source LFE OUT MHz A15Direct Digital Synthesis DDS Receiver LFE OUT MHz 0 1 0 0005 to 1 0000 7 4385 to 8 4380 2 0 0005 to 0 0005 0 00005 to 0 000...

Page 212: ... of the LFE options are not available on all models Table 5 9 LFE Bands 2 of 2 S N Prefix 6021 Only Band A15 DDS LO Synthesizer OCXO a IF Mode DIV N Synth RF Path Synth RF Output 0 1 2 000 to 4 000 IF2 4 DDS_CLK LFE 2 000 to 4 000 4 DDS_CLK LFE 2 000 to 4 000 4 DDS_CLK LFE 2 000 to 4 000 4 DDS_CLK LFE 2 000 to 4 000 4 DDS_CLK LFE 2 000 to 4 000 4 DDS_CLK LFE 2 000 to 4 000 4 DDS_CLK LFE 2 000 to 4...

Page 213: ... IF2 4 DDS_CLK LFE 4 10 01000 to 19 99000 Thru 4 DDS_CLK LFE 5 1 99000 to 31 25000 IF1 4 DDS_CLK LFE 31 5000 to 53 0000 4 DDS_CLK LFE 6 53 0000 to 62 50000 IF2 4 DDS_CLK LFE 62 50000 to 1000 0000 4 DDS_CLK LFE a A15 Source synthesizer VCO column only applies to version 6 synthesizers in instruments with a s n prefix 6021 Table 5 9 LFE Bands 2 of 2 S N Prefix 6021 Only Band A15 DDS LO Synthesizer O...

Page 214: ...d For the LFE IF signals there are only 5 IF input connectors So the switches to select the R signal are on the LFE board Second the amplifier attenuator switch chains are different for the Main and LFE IF signals The A14 motherboard bus supplies among other things the power supplies to the LFE board Many boards are already connected to these power supplies in the PNA So different power supplies a...

Page 215: ...MHz or bypasses the balun below 4 MHz See also Version 6 synthesizers and below on page 5 44 The Figure 5 14 on page 5 45 shows an example of current frequency bands in a PNA In an N5247B PNA the IF frequency will change around 53 MHz Figure 5 14 on page 5 45 shows the new structure of the frequency bands with the LFE option The two receiver modes mixer and direct conversion are used in different ...

Page 216: ...A38 A41 50 dB Source Step Attenuators and A71 74 Bias Tee Combiners Optional A50 A53 Mechanical Switches 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 throu...

Page 217: ...pping the front panel jumpers for one port signal flow through the corresponding coupler is reversed increasing the test signal sensitivity by 15 dB In the forward direction for example the signal flow through the test port 2 coupler A36 is reversed by arranging the front panel jumpers such that RCVR B IN connects to CPLR THRU and CPLR ARM connects to SOURCE OUT While increasing forward S21 dynami...

Page 218: ...ected from or transmitted through the DUT to the receiver for measurement through front panel jumpers as inputs A B C and D for 4 port models or inputs A and B for 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 ...

Page 219: ...Keysight N5247B Service Guide 5 49 Theory of Operation Signal Separation Group Operation Figure 5 16 4 Port Signal Separation Group ...

Page 220: ...5 50 Keysight N5247B Service Guide Theory of Operation Signal Separation Group Operation 5 Figure 5 17 2 Port Signal Separation Group ...

Page 221: ... 425 a step attenuator and a bias tee are placed in the signal path of each test port between the A29 A32 reference couplers and the A33 A36 test port couplers On 2 port models with Option 205 or 220 a step attenuator and a bias tee are placed in the signal path of each test port between the A29 and A32 reference couplers and the A33 and A36 test port couplers The 50 dB step attenuators provide co...

Page 222: ... to be made available for external use or an external source signal can be input through a rear panel connector to be used in place of the internal source signal In the port 1 signal path there is an additional reference coupler A54 which when switched into the signal path is used as a combiner to combine two source signals from the rear panel These signals typically come from the analyzer s two i...

Page 223: ...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...

Page 224: ...ltiplexer 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 models the R1 and R...

Page 225: ... digital signal processor DSP in response to commands from the central processing unit CPU The digitized data is processed into magnitude and phase data by the DSP and sent to the CPU random access memory RAM by way of the peripheral component interconnect PCI bus 3 IFGateCin IF pulse gate input C TTL 4 IFGateDin IF pulse gate input D TTL 5 IFGateRin IF pulse gate input R TTL 6 DCOM Digital ground...

Page 226: ...oup Operation 5 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 59 for more information on signal processing ...

Page 227: ...Keysight N5247B Service Guide 5 57 Theory of Operation Receiver Group Operation Figure 5 18 4 Port Receiver Group ...

Page 228: ...5 58 Keysight N5247B Service Guide Theory of Operation Receiver Group Operation 5 Figure 5 19 2 Port Receiver Group ...

Page 229: ...isplay 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 20 on page 5 60 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 Ac...

Page 230: ...5 60 Keysight N5247B Service Guide Theory of Operation Digital Processing and Digital Control Group Operation 5 Figure 5 20 Digital Processing and Digital Control Group ...

Page 231: ...stem 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 as...

Page 232: ...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 board...

Page 233: ...te drive 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 solid state drive USB x4 Four universal serial bus USB jacks industry standard 4 pin connectors GPIB 0 Controller A 24 pin female type D 2...

Page 234: ...og 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 betwe...

Page 235: ...ted 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 simultaneo...

Page 236: ...ered 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 t...

Page 237: ...Keysight N5247B Service Guide 5 67 Theory of Operation Noise Measurement Group Operation Option 029 Figure 5 21 Noise Measurement Group Option 029 ...

Page 238: ...5 68 Keysight N5247B Service Guide Theory of Operation Noise Measurement Group Operation Option 029 5 ...

Page 239: ... 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...

Page 240: ...nologies 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 Con...

Page 241: ...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 Ste...

Page 242: ...ed and tested assemblies are available on a trade in basis Exchange assemblies are offered for lower cost than a new assembly but meet all factory specifications required of a new assembly The defective assembly must be returned for credit under the terms of the rebuilt exchange assembly program Spare assembly stock desired should be ordered using the new assembly part number ...

Page 243: ...Keysight N5247B Service Guide 6 5 Replaceable Parts Rebuilt Exchange Assemblies Figure 6 1 Module Exchange Procedure ...

Page 244: ...r Keysight microwave PNA You can find the locations of replaceable parts in this section listed by reference designator in Table 6 1 or listed by the type of part in Table 6 2 Table 6 1 Part Number Listing by Reference Designator Reference Designator Description Location A1 front panel interface board Front panel Assembly Back Side All Options on page 6 14 A2 USB board A3 Display assembly ...

Page 245: ...t digital synthesizer DDS assembly Applies to PNA models with serial numbers 6021 or with version 7 synthesizer assembly upgrades only A16 Signal processing ADC module SPAM board A17 13 5 GHz source 2 synthesizer board Applies to PNA models with serial numbers 6021 only A18 System motherboard A19 Midplane board A20 Power supply A21 CPU board A22 GPIB board A23 Testset motherboard Your option set d...

Page 246: ...d Cables by Option Set in Table 6 2 on page 6 10 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 A47 Port 3 receiver step attenuator A48 Port 4 receiver step attenuator A49 Port 2 receiver step attenuator A50 Port 1 mechanical swi...

Page 247: ...Port 4 bias combiner A74 Port 2 bias combiner a The A26 splitter 5067 4086 and N5247 20111 N5245 20022 N5245 20023 N5247 20110 and N5247 20146 cables are only used with a legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 cables are used only with the new N5240 60101 HMA 26 5 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chapter 7 Repairs and Figur...

Page 248: ...ixes 6021 on page 6 31 2 Port Configurations Serial Number Prefixes 6021 on page 6 58 4 Port Configuration Serial Number Prefixes 6021 on page 6 84 4 Port Configurations Serial Number Prefix 6021 on page 6 136 Rear Panel Assembly All Options on page 6 189 Hardware Fan Assemblies All Options on page 6 192 Top Hardware and Miscellaneous Parts All Options on page 6 194 Bottom Hardware and Miscellaneo...

Page 249: ...uide 6 11 Replaceable Parts Replaceable Parts Listings Miscellaneous Continued USB Accessories on page 6 205 ESD Supplies on page 6 205 Rack Mount Kits and Handle Kits on page 6 205 Table 6 2 Part Number Listing by Type of Part ...

Page 250: ...N5247 80022 Lower front panel overlay 2 port Options 224 029 N5247 80021 Front panel overlay 4 port Option 401 and Option 419 N5247 80019 Front panel overlay 4 port Option 423 N5247 80023 Front panel overlay 4 port Option 423 with 029 N5247 80027 Front panel overlay 4 port Option 425 N5247 80028 Front panel overlay 4 port Option 425 with 029 W1312 40180 1 Front panel RPG knob 32 mm p N5247 80017 1...

Page 251: ...gure 6 2 Front panel Assembly Front Side All Options Not Shown N5242 00049 1 Guard jumper cables center 4 Port Not shown 5023 3074 2 Front handle a Some options require 14 of the 0515 1946 screws to secure dress panel overlay subpanel Reference Designator Part Number Qty Description ...

Page 252: ...cure to attach RPG board N5240 63083 1 RPG board 2090 1092 1 Touch display LCD 12 1 inch N5242 00045 LCD 1 LCD Mounting plate W1312 40016 1 Foam mount speaker to attach speaker assembly N5240 60072 1 Speaker assembly Do NOT touch top of speaker s clear diaphragm Attach cable to interface board J11 2090 1088 1 Touch screen controller board 0515 1934 6 Machine screw M2 5 x 6 mm pan head 4 to attach ...

Page 253: ... 6 17 only one bracket is shown 8121 2173 1 LCD Cable assembly 30 AWG 300V 12 pin plug to 8 pin plug E5071 61653 1 LCD display cable N5240 60073 1 Touch screen controller board cable N5242 60075 1 Cable A3 LED Driver board Backlight converter board to interface board N5242 60074 1 Power switch cable E5071 61660 1 Wire assembly RPG to attach RPG board N5240 63083 to Interface board J10 Reference De...

Page 254: ...6 16 Keysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 3 Front Panel Assembly Back Side All Options Figure 6 4 A3 Display Assembly with Interface Board USB Assemblies ...

Page 255: ...Keysight N5247B Service Guide 6 17 Replaceable Parts Replaceable Parts Listings Figure 6 5 A3 Display Assembly with LCD Display 2090 1092 LED and Side Brackets ...

Page 256: ...46 1 40 GHz doubler assembly port 2 A9 N5245 60124 1 Noise receiver board Option 029 only A10 5087 7780 5087 6780 1 26 5 GHz source 2 board On 2 port models this assembly is included only with Option 224 A11 Not used A12 5087 7346 1 40 GHz doubler assembly port 3 On 2 port models assembly A12 is included only with Option 224 A13 5087 7346 1 40 GHz doubler assembly port 4 On 2 port models assembly ...

Page 257: ...anganese dioxide 3V 0 22A hr e a For the latest information on CPUs and associated drives visit http na support keysight com pna hdnumbers html b The A55 solid state disk drive for the 2 2 GHz CPU board plugs into the A21 CPU board assembly from the rear panel Refer to Removing and Replacing the A55 Solid State Drive SSD on page 7 60 for an illustration c You can learn your System CPU version usin...

Page 258: ...6 20 Keysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 6 Top Assemblies All Options S N Prefixes 6021 ...

Page 259: ...P4 to A12 port 3 40 GHz doubler P4 W10 SR N5245 20033 1 A12 port 3 40 GHz doubler P3 to A13 port 4 40 GHz doubler P4 On 2 port models W10 is included only with Option 224 W11 SR N5247 20114 1 A7 port 1 40 GHz doubler P6 to W12 W13 SR N5247 20086 1 A7 port 1 40 GHz doubler P2 to W14 W15 SR N5247 20114 1 A12 port 3 40 GHz doubler P6 to W16 On 2 port models W15 is included only with Option 224 W17 SR...

Page 260: ...downconverter to A9 noise board Option 029 only W172 F N5245 60020 1 A9 noise board J1 to A59 noise receiver downconverter J3 Option 029 only W173 SR N5247 20145 1 A59 noise receiver downconverter to A9 noise board Option 029 only W175 F N5245 60019 1 A9 noise board J5 to A59 noise receiver downconverter J2 Option 029 only W191 F N5245 60027 1 Cable assy RF CA A70 A75 LFE SRC1 J20 Synth SRC1 J102 ...

Page 261: ...247B Service Guide 6 23 Replaceable Parts Replaceable Parts Listings Figure 6 7 Top Cables All Cables All Options S N Prefixes 6021 SPAM 5 boards use W149 W150 for 2 ports RF cables W80 W82 apply to 4 Port models ...

Page 262: ...doubler assembly port 2 A9 N5245 60124 1 Noise receiver board Option 029 only A10 5087 7780 5087 6780 1 26 5 GHz source 2 board On 2 port models this assembly is included only with Option 224 A11 Not used A12 5087 7346 1 40 GHz doubler assembly port 3 On 2 port models assembly A12 is included only with Option 224 A13 5087 7346 1 40 GHz doubler assembly port 4 On 2 port models assembly A13 is inclu...

Page 263: ...on CPUs and associated drives visit http na support keysight com pna hdnumbers html b The A55 solid state disk drive for the 2 2 GHz CPU board plugs into the A21 CPU board assembly from the rear panel Refer to Removing and Replacing the A55 Solid State Drive SSD on page 7 60 for an illustration c You can learn your System CPU version using the PNA software On the PNA front panel press Help About N...

Page 264: ...6 26 Keysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 8 Top Assemblies All Options S N Prefixes 6021 ...

Page 265: ...nly with Option 224 W9 SR N5245 20032 1 A10 source 2 P4 to A12 port 3 40 GHz doubler P4 W10 SR N5245 20033 1 A12 port 3 40 GHz doubler P3 to A13 port 4 40 GHz doubler P4 On 2 port models W10 is included only with Option 224 W11 SR N5247 20114 1 A7 port 1 40 GHz doubler P6 to W12 W13 SR N5247 20086 1 A7 port 1 40 GHz doubler P2 to W14 W15 SR N5247 20114 1 A12 port 3 40 GHz doubler P6 to W16 On 2 po...

Page 266: ... 1 A9 noise board J5 to A59 noise receiver downconverter J2 Option 029 only W200 F N5240 60115 1 A15 SRC DD synth J11 to SPAM J3 W201 SR N5240 20127 1 A15 SRC3 DD synth J13 to SPAM J3 Option 422 423 Only W208 F N5240 60112 1 A70 A75 LFE board to A15 DD Synth Source 1 J12 to A70 LFE J20 W209 F N5240 60114 1 A70 LFE board to A15 DD Synth Source 2 J14 to A70 LFE J21 W210 F N5240 60113 1 A70 A75 LFE b...

Page 267: ...247B Service Guide 6 29 Replaceable Parts Replaceable Parts Listings Figure 6 9 Top Cables All Cables All Options S N Prefixes 6021 SPAM 5 boards use W149 W150 for 2 ports RF cables W80 W82 apply to 4 Port models ...

Page 268: ...6 30 Keysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 ...

Page 269: ...otherboard A24 N5240 60062b was N5240 60045 1 IF multiplexer board A25 N5240 60101 Was 5087 7765 1 LO Multiplier amplifier 26 5 HMA26 5 A27 5087 7337 1 Mixer brick A29 A32 5087 7744 2 Test port 1 reference coupler Test port 2 reference coupler A33 A36 5087 7778 2 Test port 1 coupler Test port 2 coupler A37 5087 7759 1 Reference mixer switch A60 A63 5087 7336 2 70 GHz doubler assembly port 1 70 GHz...

Page 270: ...6 32 Keysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 ...

Page 271: ...Keysight N5247B Service Guide 6 33 Replaceable Parts Replaceable Parts Listings Figure 6 10 Bottom Assemblies Standard 2 Port Configuration Option 201 S N Prefixes 6201 ...

Page 272: ... CPLR THRU to A36 port 2 coupler W46 SR N5247 20041 1 A36 port 2 coupler to front panel port 2 CPLR ARM W47 SR N5247 20053 1 Port 1 RCVR A IN to A27 mixer brick A W50 SR N5247 20054 1 front panel port 2 RCVR B IN to A27 mixer brick B W51 SR N5247 20011 1 Front panel REF 1 SOURCE OUT to A37 ref mixer switch W52 SR N5247 20012 1 REF 1 RCVR R1 IN to A37 reference mixer switch W53 SR N5247 20048 1 A37...

Page 273: ...ll Cables All Options S N Prefixes 6021 on page 6 21 W151 SR N5247 20056 1 A29 port 1 reference coupler to A37 reference mixer switch W154 SR N5247 20057 1 A32 port 2 ref coupler to front panel REF 2 SOURCE OUT a SR semirigid coaxial cable F flexible coaxial cable b On legacy instruments using the 5087 7765 HMA26 5 the N5245 20100 cable is used only on 2 port instruments On instruments with a new ...

Page 274: ...arts Listings 6 Figure 6 11 Bottom RF Cables Standard 2 Port Configuration Option 201 S N Prefixes 6201 SPAM 5 boards use W149 W150 for 2 ports RF cables W80 W82 apply to 4 Port models not shown See also Top Cables All Cables All Options S N Prefixes 6021 on page 6 21 ...

Page 275: ... GHz doubler J1 to A23 test set motherboard J4 3W N5247 60016 A23 test set motherboard J222 to ports 2 LED board J1 30R N5247 60018 A63 port 2 70 GHz doubler J1 to A23 test set motherboard J6 24R N5247 60022 A23 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 ...

Page 276: ...6 38 Keysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 12 Bottom Ribbon Cables and Wire Harnesses Standard 2 Port Configuration Option 201 S N Prefixes 6201 ...

Page 277: ...rence mixer switch A38 A41 84905 60004 was 84905 60002 2 Test port 1 source attenuator Test port 2 source attenuator A42 A45 5087 7732 Was 5086 7020 2 Test port 1 bias tee Test port 2 bias tee A46 A49 84905 60004 was 84905 60002 2 Port 1 receiver attenuator Port 2 receiver attenuator A60 A63 5087 7336 2 70 GHz doubler assembly port 1 70 GHz doubler assembly port 2 N5240 60058 2 front panel LED boa...

Page 278: ...6 40 Keysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 13 Bottom Assemblies 2 Port Options 219 S N Prefixes 6201 ...

Page 279: ...ns S N Prefixes 6021 on page 6 21 W66 SR N5247 20109 1 W65 to rear panel EXT TSET DRIVE RF OUT J6 W69 SR N5247 20112 1 A27 mix brick to r panel EXT TSET DRIVE LO OUT J5 W70b SR N5247 20100 1 A25 HMA26 5 to A27 mixer brick W71 F N5242 60017 1 A27 mixer brick A to A24 IF multiplexer P1 W74 F N5242 60018 1 A27 mixer brick B to A24 IF multiplexer P201 W79 83 F Refer to Top Cables All Cables All Option...

Page 280: ...5 1 A27 mixer brick R1 to A24 IF multiplexer P601 W148 F N5242 60026 1 A27 mixer brick R2 to A24 IF multiplexer P801 W149 W150 SR Refer to Top Cables All Cables All Options S N Prefixes 6021 on page 6 21 W152 SR N5247 20079 1 A29 port 1 reference coupler to A37 reference mixer switch W153 SR N5247 20045 1 A27 mixer brick R2 to front panel REF 2 RCVR R2 IN a SR semirigid coaxial cable F flexible co...

Page 281: ...eplaceable Parts Listings Figure 6 14 Bottom RF Cables 2 Port Options 219 S N Prefixes 6201 SPAM 5 boards use W149 W150 for 2 ports RF cables W80 W82 apply to 4 Port models not shown See also Top Cables All Cables All Options S N Prefixes 6021 on page 6 21 ...

Page 282: ...otherboard J541 to A42 port 1 bias tee q 3W N5247 60016 A23 test set motherboard J222 to port 2 LED board J1 2W N5247 60021 A23 test set motherboard J542 to A45 port 2 bias tee s 16R N5245 60006 A23 test set motherboard J546 to A41 port 2 source attenuator 10R N5247 60020 A23 test set motherboard J208 to A49 port 2 receiver attenuator 30R N5247 60018 A63 port 2 70 GHz doubler J1 to A23 test set mo...

Page 283: ...Keysight N5247B Service Guide 6 45 Replaceable Parts Replaceable Parts Listings Figure 6 15 Bottom Ribbon Cables and Wire Harnesses 2 Port Options 219 S N Prefixes 6201 ...

Page 284: ... A33 A36 5087 7778 2 Test port 1 coupler Test port 2 coupler A37 5087 7759 1 Reference mixer switch A38 A41 84905 60004 was 84905 60002 2 Test port 1 source attenuator Test port 2 source attenuator A42 A45 5087 7732 Was 5086 7020 2 Test port 1 bias tee Test port 2 bias tee A46 A49 84905 60004 was 84905 60002 2 Port 1 receiver attenuator Port 2 receiver attenuator A50 A51 A53 N1811 60010 5 Port 1 m...

Page 285: ...or P1001 and Source 2 As a result of this change the IF multiplexer boards have had their P1001 connectors removed If your instrument contains a N5242 60031 cable remove it from your instrument c All 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 connec...

Page 286: ...ysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 16 Bottom Assemblies 2 Port Option 224 with and without Option 029 S N Prefixes 6201 A56 A57 A59 and A64 only with Option 029 ...

Page 287: ...CPLR ARM W51 SR N5247 20011 1 A37 reference mixer switch to front panel REF 1 SOURCE OUT W52 SR N5247 20012 1 REF 1 RCVR R1 IN to A37 reference mixer switch W53 SR N5247 20048 1 A37 reference mixer switch to A27 mixer brick R1 W60 SR N5247 20107 8 front panel jumper W61 SR Refer to Top Cables All Cables All Options S N Prefixes 6021 on page 6 21 W62b SR N5247 20111 1 A25 HMA26 5 to A26 splitter W6...

Page 288: ...5 port 2 bias tee withOUT Option 029 only W116 SR N5247 20042 1 A36 port 2 coupler to A45 port 2 bias tee W117 SR N5247 20013 1 Front panel port 1 RCVR A IN to A46 port 1 receiver attenuator W118 SR N5247 20047 1 A46 port 1 receiver attenuator to A27 mixer brick A W123 SR N5247 20020 1 Port 2 RCVR B IN to A49 port 2 receiver attenuator W124 SR N5247 20046 1 A49 port 2 receiver attenuator to A27 mi...

Page 289: ...A56 port 1 noise bypass switch Option 029 only W163 SR N5247 20117 1 A64 tuner to A56 port 1 noise bypass switch Option 029 only W164 SR N5247 20118 1 A64 tuner to A56 port 1 noise bypass switch Option 029 only W165 SR N5247 20119 1 Front panel port 1 CPLR THRU to A56 port 1 noise bypass switch Option 029 only W166 SR N5247 20124 1 Front panel port 2 CPLR THRU to A57 port 2 noise bypass switch Opt...

Page 290: ...NA has installed refer to Chapter 7 Repairs and Figure 7 17 on page 38 and for details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configurations Serial Number Prefixes 6021 on page 6 31 and 4 Port Configuration Serial Number Prefixes 6021 on page 6 84 c On legacy instruments using the 5087 7765 HMA26 5 the N5245 20100 cable is used only on 2 port instruments On inst...

Page 291: ...eplaceable Parts Listings Figure 6 17 Bottom RF Cables 2 Port Options 224 S N Prefixes 6201 SPAM 5 boards use W149 W150 for 2 ports RF cables W80 W82 apply to 4 Port models not shown See also Top Cables All Cables All Options S N Prefixes 6021 on page 6 21 ...

Page 292: ...e Parts Listings 6 Figure 6 18 Bottom RF Cables 2 Port Option 224 with Option 029 S N Prefixes 6201 SPAM 5 boards use W149 W150 for 2 ports RF cables W80 W82 apply to 4 Port models not shown See also Top Cables All Cables All Options S N Prefixes 6021 on page 6 21 ...

Page 293: ...1 70 GHz doubler J1 to A23 test set motherboard J4 4W P O A56 port 1 noise bypass switch to A59 noise receiver downconverter J42 port 1 Refer to 2 Port Configuration Option 224 with and without Option 029 S N Prefixes 6201 on page 6 46 Option 029 only 2W N5247 60021 A23 test set motherboard J541 to A42 port 1 bias tee 3W N5247 60016 A23 test set motherboard J222 to ports 2 LED board J1 2W N5247 60...

Page 294: ... 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 20R N5247 60014 A23 test set motherboard J551 to A27 mixer brick 1 J52 a nR n wires in a ribbon flat cable nW n wires in a wire harness Reference Designator Typea Part Number Description 23 24 25 26 ...

Page 295: ...ce Guide 6 57 Replaceable Parts Replaceable Parts Listings Figure 6 19 Bottom Ribbon Cables and Wire Harnesses 2 Port Option 224 with and without Option 029 S N Prefixes 6201 Cables 3 11 15 and 19 apply only with Option 029 ...

Page 296: ...motherboard A24 N5240 60062b was N5240 60045 1 IF multiplexer board A25 N5240 63101 Was 5087 7765 1 LO Multiplier amplifier 26 5 HMA26 5 A27 5087 7337 1 Mixer brick A29 A32 5087 7744 2 Test port 1 reference coupler Test port 2 reference coupler A33 A36 5087 7778 2 Test port 1 coupler Test port 2 coupler A37 5087 7759 1 Reference mixer switch A60 A63 5087 7336 2 70 GHz doubler assembly port 1 70 GH...

Page 297: ...Keysight N5247B Service Guide 6 59 Replaceable Parts Replaceable Parts Listings Figure 6 20 Bottom Assemblies Standard 2 Port Configuration Option 201 S N Prefixes 6201 ...

Page 298: ...CPLR THRU to A36 port 2 coupler W46 SR N5247 20041 1 A36 port 2 coupler to front panel port 2 CPLR ARM W47 SR N5247 20053 1 Port 1 RCVR A IN to A27 mixer brick A W50 SR N5247 20054 1 front panel port 2 RCVR B IN to A27 mixer brick B W51 SR N5247 20011 1 Front panel REF 1 SOURCE OUT to A37 ref mixer switch W52 SR N5247 20012 1 REF 1 RCVR R1 IN to A37 reference mixer switch W53 SR N5247 20048 1 A37 ...

Page 299: ...ll Cables All Options S N Prefixes 6021 on page 6 27 W151 SR N5247 20056 1 A29 port 1 reference coupler to A37 reference mixer switch W154 SR N5247 20057 1 A32 port 2 ref coupler to front panel REF 2 SOURCE OUT a SR semirigid coaxial cable F flexible coaxial cable b On legacy instruments using the 5087 7765 HMA26 5 the N5245 20100 cable is used only on 2 port instruments On instruments with a new ...

Page 300: ...arts Listings 6 Figure 6 21 Bottom RF Cables Standard 2 Port Configuration Option 201 S N Prefixes 6201 SPAM 5 boards use W149 W150 for 2 ports RF cables W80 W82 apply to 4 Port models not shown See also Top Cables All Cables All Options S N Prefixes 6021 on page 6 27 ...

Page 301: ...GHz doubler J1 to A23 test set motherboard J4 3W N5247 60016 A23 test set motherboard J222 to ports 2 LED board J1 30R N5247 60018 A63 port 2 70 GHz doubler J1 to A23 test set motherboard J6 24R N5247 60022 A23 test set motherboard J209 to A25 HMA26 5 J1 q 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...

Page 302: ...6 64 Keysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 22 Bottom Ribbon Cables and Wire Harnesses Standard 2 Port Configuration Option 201 S N Prefixes 6201 ...

Page 303: ...rence mixer switch A38 A41 84905 60004 was 84905 60002 2 Test port 1 source attenuator Test port 2 source attenuator A42 A45 5087 7732 Was 5086 7020 2 Test port 1 bias tee Test port 2 bias tee A46 A49 84905 60004 was 84905 60002 2 Port 1 receiver attenuator Port 2 receiver attenuator A60 A63 5087 7336 2 70 GHz doubler assembly port 1 70 GHz doubler assembly port 2 N5240 60058 2 front panel LED boa...

Page 304: ...6 66 Keysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 23 Bottom Assemblies 2 Port Options 219 S N Prefixes 6201 ...

Page 305: ...ns S N Prefixes 6021 on page 6 27 W66 SR N5247 20109 1 W65 to rear panel EXT TSET DRIVE RF OUT J6 W69 SR N5247 20112 1 A27 mix brick to r panel EXT TSET DRIVE LO OUT J5 W70b SR N5247 20100 1 A25 HMA26 5 to A27 mixer brick W71 F N5242 60017 1 A27 mixer brick A to A24 IF multiplexer P1 W74 F N5242 60018 1 A27 mixer brick B to A24 IF multiplexer P201 W79 83 F Refer to Top Cables All Cables All Option...

Page 306: ...5 1 A27 mixer brick R1 to A24 IF multiplexer P601 W148 F N5242 60026 1 A27 mixer brick R2 to A24 IF multiplexer P801 W149 W150 SR Refer to Top Cables All Cables All Options S N Prefixes 6021 on page 6 27 W152 SR N5247 20079 1 A29 port 1 reference coupler to A37 reference mixer switch W153 SR N5247 20045 1 A27 mixer brick R2 to front panel REF 2 RCVR R2 IN a SR semirigid coaxial cable F flexible co...

Page 307: ...eplaceable Parts Listings Figure 6 24 Bottom RF Cables 2 Port Options 219 S N Prefixes 6201 SPAM 5 boards use W149 W150 for 2 ports RF cables W80 W82 apply to 4 Port models not shown See also Top Cables All Cables All Options S N Prefixes 6021 on page 6 27 ...

Page 308: ...otherboard J541 to A42 port 1 bias tee q 3W N5247 60016 A23 test set motherboard J222 to port 2 LED board J1 2W N5247 60021 A23 test set motherboard J542 to A45 port 2 bias tee s 16R N5245 60006 A23 test set motherboard J546 to A41 port 2 source attenuator 10R N5247 60020 A23 test set motherboard J208 to A49 port 2 receiver attenuator 30R N5247 60018 A63 port 2 70 GHz doubler J1 to A23 test set mo...

Page 309: ...Keysight N5247B Service Guide 6 71 Replaceable Parts Replaceable Parts Listings Figure 6 25 Bottom Ribbon Cables and Wire Harnesses 2 Port Options 219 S N Prefixes 6201 ...

Page 310: ...or Test port 2 source attenuator A42 A45 5087 7732 Was 5086 7020 2 Test port 1 bias tee Test port 2 bias tee A46 A49 84905 60004 was 84905 60002 2 Port 1 receiver attenuator Port 2 receiver attenuator A50 A51 A53 N1811 60010 5 Port 1 mechanical switch SRC2 OUT1 mechanical switch Port 2 mechanical switch A54 11667 60016 1 Combiner A56 A57 N1811 60010 5 Port 1 noise bypass switch Option 029 only Por...

Page 311: ...IF multiplexer boards have had their P1001 connectors removed If your instrument contains a N5242 60031 cable remove it from your instrument c 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 6003...

Page 312: ...ysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 26 Bottom Assemblies 2 Port Option 224 with and without Option 029 S N Prefixes 6201 A56 A57 A59 and A64 only with Option 029 ...

Page 313: ...PLR ARM W51 SR N5247 20011 1 A37 reference mixer switch to front panel REF 1 SOURCE OUT W52 SR N5247 20012 1 REF 1 RCVR R1 IN to A37 reference mixer switch W53 SR N5247 20048 1 A37 reference mixer switch to A27 mixer brick R1 W60 SR N5247 20107 8 front panel jumper W61 SR Refer to Top Cables All Cables All Options S N Prefixes 6021 on page 6 27 W62b SR N5247 20111 1 A25 HMA26 5 to A26 splitter W63...

Page 314: ...5 port 2 bias tee withOUT Option 029 only W116 SR N5247 20042 1 A36 port 2 coupler to A45 port 2 bias tee W117 SR N5247 20013 1 Front panel port 1 RCVR A IN to A46 port 1 receiver attenuator W118 SR N5247 20047 1 A46 port 1 receiver attenuator to A27 mixer brick A W123 SR N5247 20020 1 Port 2 RCVR B IN to A49 port 2 receiver attenuator W124 SR N5247 20046 1 A49 port 2 receiver attenuator to A27 mi...

Page 315: ...on 029 only W164 SR N5247 20118 1 A64 tuner to A56 port 1 noise bypass switch Option 029 only W165 SR N5247 20119 1 Front panel port 1 CPLR THRU to A56 port 1 noise bypass switch Option 029 only W166 SR N5247 20124 1 Front panel port 2 CPLR THRU to A57 port 2 noise bypass switch Option 029 only W167 SR N5247 20123 1 A57 port 2 noise bypass switch to A45 port 2 bias tee Option 029 only W168 SR N524...

Page 316: ...hapter 7 Repairs and Figure 7 17 on page 38 and for details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configurations Serial Number Prefixes 6021 on page 6 31 and 4 Port Configuration Serial Number Prefixes 6021 on page 6 84 c On legacy instruments using the 5087 7765 HMA26 5 the N5245 20100 cable is used only on 2 port instruments On instruments with a new HMA26 5 ...

Page 317: ...eplaceable Parts Listings Figure 6 27 Bottom RF Cables 2 Port Options 224 S N Prefixes 6201 SPAM 5 boards use W149 W150 for 2 ports RF cables W80 W82 apply to 4 Port models not shown See also Top Cables All Cables All Options S N Prefixes 6021 on page 6 27 ...

Page 318: ...e Parts Listings 6 Figure 6 28 Bottom RF Cables 2 Port Option 224 with Option 029 S N Prefixes 6201 SPAM 5 boards use W149 W150 for 2 ports RF cables W80 W82 apply to 4 Port models not shown See also Top Cables All Cables All Options S N Prefixes 6021 on page 6 27 ...

Page 319: ...rt 1 70 GHz doubler J1 to A23 test set motherboard J4 4W P O A56 port 1 noise bypass switch to A59 noise receiver downconverter J42 port 1 Refer to 2 Port Configuration Option 224 with and without Option 029 S N Prefixes 6201 on page 6 72 Option 029 only 2W N5247 60021 A23 test set motherboard J541 to A42 port 1 bias tee 3W N5247 60016 A23 test set motherboard J222 to ports 2 LED board J1 2W N5247...

Page 320: ... 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 20R N5247 60014 A23 test set motherboard J551 to A27 mixer brick 1 J52 a nR n wires in a ribbon flat cable nW n wires in a wire harness Reference Designator Typea Part Number Description 23 24 25 26 ...

Page 321: ...ce Guide 6 83 Replaceable Parts Replaceable Parts Listings Figure 6 29 Bottom Ribbon Cables and Wire Harnesses 2 Port Option 224 with and without Option 029 S N Prefixes 6201 Cables 3 11 15 and 19 apply only with Option 029 ...

Page 322: ...4 Port Configuration Option 401 S N Prefixes 6201 Reference Designator Part Numbera Qty Description A23 N5245 60157 Was N5247 60001 1 Test set motherboard A24 N5240 60062b Was N5240 60045 1 IF multiplexer board A25 5087 7765 1 LO Multiplier amplifier 26 5 HMA26 5 A26 5067 4086 1 Splitter A27 A28 5087 7337 2 Mixer brick A29 A30 A31 A32 5087 7744 4 Test port 1 reference coupler Test port 3 reference...

Page 323: ...r 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 ...

Page 324: ...6 86 Keysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 30 Bottom Assemblies Standard 4 Port Configuration Option 401 S N Prefixes 6201 ...

Page 325: ...pler W31 SR N5247 20037 1 A29 port 1 ref coupler to front panel port 1 SOURCE OUT W32 SR N5247 20016 1 Port 1 CPLR THRU to A33 port 1 coupler W33 SR N5247 20078 1 A29 port 1 reference coupler to A37 reference mixer switch W34 SR N5247 20082 1 A33 port 1 coupler to front panel port 1 CPLR ARM W35 SR N5247 20023 1 A30 port 3 ref coupler to front panel port 3 SOURCE OUT W36 SR N5247 20006 1 port 3 CP...

Page 326: ...refixes 6021 on page 6 27 W62b SR N5247 20111 1 A25 HMA26 5 to A26 splitter W63b SR N5245 20023 1 RF cable A26 splitter to A27 mixer brick W64b SR N5245 20022 1 A26 splitter to A28 mixer brick W66 SR N5247 20109 1 W65 to rear panel EXT TSET DRIVE RF OUT J6 W68 SR N5247 20088 1 rear panel port RF2 OUT J12 to W67 W69 SR N5247 20112 1 A27 mixer brick to EXT TSET DRIVE LO OUT J5 W70c SR N5247 20100 1 ...

Page 327: ...er J500 W204b F N5247 20185 1 A25 HMA26 5 to A28 mixer brick 2 a SR semirigid coaxial cable F flexible coaxial cable b The A26 splitter 5067 4086 and N5247 20111 N5245 20022 N5245 20023 N5247 20110 and N5247 20146 cables are only used with a legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 cables are used only with the new N5240 60101 HMA 26 5 If you are unclear which HMA26...

Page 328: ...e only used with a legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 cables are used only with the new N5240 60101 HMA 26 5 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chapter 7 Repairs and Figure 7 17 on page 38 and for details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configu rations Serial Number Prefixes 6021...

Page 329: ... J1 to A23 test set motherboard J4 3W N5247 60016 A23 test set motherboard J222 to ports 2 4 LED board J1 30R N5247 60018 A63 port 2 70 GHz doubler J1 to A23 test set motherboard J6 q 24R N5247 60022 A23 test set motherboard J209 to A25 HMA26 5 J1 30R N5247 60018 A62 port 4 70 GHz doubler J1 to A23 test set motherboard J3 s 100R N5242 60004 A18 system motherboard J1 to A23 test set motherboard J1 ...

Page 330: ...6 92 Keysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 32 Bottom Ribbon Cables and Wire Harnesses Standard 4 Port Configuration Option 401 S N Prefixes 6201 ...

Page 331: ...port 4 coupler Test port 2 coupler A37 5087 7759 1 Reference mixer switch A38 A39 A40 A41 84905 60004 was 84905 60002 4 Test port 1 source attenuator Test port 3 source attenuator Test port 4 source attenuator Test port 2 source attenuator A42 A43 A44 A45 5087 7732 Was 5086 7020 4 Test port 1 bias tee Test port 3 bias tee Test port 4 bias tee Test port 2 bias tee A46 A47 A48 A49 84905 60004 was 84...

Page 332: ...ew 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 ...

Page 333: ...Keysight N5247B Service Guide 6 95 Replaceable Parts Replaceable Parts Listings Figure 6 33 Bottom Assemblies 4 Port Options 419 S N Prefixes 6201 ...

Page 334: ... 20107 12 front panel jumper W61 SR Refer to Top Cables All Cables All Options S N Prefixes 6021 on page 6 27 W62b SR N5247 20125 1 A25 HMA26 5 to A27 mixer block W63b SR N5245 20023 1 RF cable A26 splitter to A27 mixer brick Option 029 only W66 SR N5247 20109 1 W65 to rear panel EXT TSET DRIVE RF OUT J6 W69 SR N5247 20112 1 A27 mixer brick to EXT TSET DRIVE LO OUT J5 W70c SR N5247 20100 1 A25 HMA...

Page 335: ...45 SR N5247 20066 1 REF 2 RCVR R2 IN to A27 mixer brick R2 W146 SR N5247 20058 1 A32 port 2 ref coupler to front panel REF 2 SOURCE OUT W204b SR N5247 20185 1 A25 HMA26 5 to A28 mixer brick 2 See also ports 3 4 Figure 6 35 on page 6 101 a SR semirigid coaxial cable F flexible coaxial cable b The A26 splitter 5067 4086 and N5247 20111 N5245 20022 N5245 20023 N5247 20110 and N5247 20146 cables are o...

Page 336: ...45 20023 N5247 20110 and N5247 20146 cables are only used with a legacy HMA26 5 p n 5087 7765 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chapter 7 Repairs and Figure 7 17 on page 38 and for details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configurations Serial Number Prefixes 6021 on page 6 31 and 4 Port Configuration Serial Number P...

Page 337: ...0067 1 REF 4 RCVR R4 IN to A69 3 dB pad on A28 mixer brick R4 W58 cap N5247 20138 2 4 mm cap for A28 mixer brick W64b SR N5245 20022 1 A26 splitter to A28 mixer brick W68 SR N5247 20088 1 rear panel port RF2 OUT J12 to W67 W75 F N5242 60024 1 A28 mixer brick D to A24 IF multiplexer P801 W76 F N5242 60019 1 A28 mixer brick R4 to A24 IF multiplexer P414 W77 F N5242 60020 1 A28 mixer brick R3 to A24 ...

Page 338: ... 4 RCVR D IN to A48 port 4 receiver attenuator W122 SR N5247 20065 1 A48 port 4 receiver attenuator to A28 mixer brick D a SR semirigid coaxial cable F flexible coaxial cable b The A26 splitter 5067 4086 and N5247 20111 N5245 20022 N5245 20023 N5247 20110 and N5247 20146 cables are only used with a legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 cables are used only with t...

Page 339: ...5 20023 N5247 20110 and N5247 20146 cables are only used with a legacy HMA26 5 p n 5087 7765 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chapter 7 Repairs and Figure 7 17 on page 38 and for details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configurations Serial Number Prefixes 6021 on page 6 31 and 4 Port Configuration Serial Number Pr...

Page 340: ...5247 60021 A23 test set motherboard J543 to A43 port 3 bias tee 2W N5247 60021 A23 test set motherboard J544 to A44 port 4 bias tee 3W N5247 60016 A23 test set motherboard J222 to ports 2 4 LED board J1 2W N5247 60021 A23 test set motherboard J542 to A45 port 2 bias tee 16R N5245 60006 A23 test set motherboard J548 to A40 port 4 source attenuator 16R N5245 60006 A23 test set motherboard J546 to A4...

Page 341: ...3 Replaceable Parts Replaceable Parts Listings 20R N5247 60015 A23 test set motherboard J552 to A28 mixer brick 2 J52 a nR n wires in a ribbon flat cable nW n wires in a wire harness Reference Designator Typea Part Number Description 26 ...

Page 342: ...6 104 Keysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 36 Bottom Ribbon Cables and Wire Harnesses 4 Port Options 419 S N Prefixes 6201 ...

Page 343: ...reference coupler A33 A34 A35 A36 5087 7778 4 Test port 1 coupler Test port 3 coupler Test port 4 coupler Test port 2 coupler A37 5087 7759 1 Reference mixer switch A38 A39 A40 A41 84905 60004 was 84905 60002 4 Test port 1 source attenuator Test port 3 source attenuator Test port 4 source attenuator Test port 2 source attenuator A42 A43 A44 A45 5087 7732 Was 5086 7020 4 Test port 1 bias tee Test p...

Page 344: ...enuator A28 mixer brick R1 N5240 60058 2 front panel LED board a Part numbers in italic typeface are for rebuilt exchange assemblies Refer to Rebuilt Exchange Assemblies on page 6 4 b All new units built after August 2009 no longer use the N5242 60031 cable that was attached to connector P1001 and Source 2 As a result of this change the IF multiplexer boards have had their P1001 connectors removed...

Page 345: ...Keysight N5247B Service Guide 6 107 Replaceable Parts Replaceable Parts Listings Figure 6 37 Bottom Assemblies 4 Port Option 423 with and without 029 S N Prefixes 6201 ...

Page 346: ...r panel EXT TSET DRIVE RF OUT J6 W69 SR N5247 20112 1 A27 mixer brick to EXT TSET DRIVE LO OUT J5 W70c SR N5247 20100 1 A25 HMA26 5 to A27 mixer brick 1 W71 F N5242 60017 1 A27 mixer brick A to A24 IF multiplexer P1 W72 F N5242 60021 1 A27 mixer brick R1 to A24 IF multiplexer P411 W73 F N5242 60022 1 A27 mixer brick R2 to A24 IF multiplexer P412 W74 F N5242 60018 1 A27 mixer brick B to A24 IF mult...

Page 347: ...anical switch to PORT 2 SW SRC OUT J2 W142 SR N5247 20089 1 A53 port 2 mechanical switch to PORT 2 TSET IN J1 W143 SR N5247 20107 2 rear panel jumper W144 SR N5247 20071 1 A29 port 1 reference coupler to A37 reference mixer switch W145 SR N5247 20066 1 REF 2 RCVR R2 IN to A27 mixer brick R2 W146 SR N5247 20058 1 A32 port 2 ref coupler to front panel REF 2 SOURCE OUT W162 SR N5247 20120 1 A42 port ...

Page 348: ...led refer to Chapter 7 Repairs and Figure 7 17 on page 38 and for details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configurations Serial Number Prefixes 6021 on page 6 31 and 4 Port Configuration Serial Number Prefixes 6021 on page 6 84 c On legacy instruments using the 5087 7765 HMA26 5 the N5245 20100 cable is used only on 2 port instruments On instruments with ...

Page 349: ...5 20023 N5247 20110 and N5247 20146 cables are only used with a legacy HMA26 5 p n 5087 7765 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chapter 7 Repairs and Figure 7 17 on page 38 and for details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configurations Serial Number Prefixes 6021 on page 6 31 and 4 Port Configuration Serial Number Pr...

Page 350: ...0022 N5245 20023 N5247 20110 and N5247 20146 cables are only used with a legacy HMA26 5 p n 5087 7765 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chapter 7 Repairs and Figure 7 17 on page 38 and for details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configurations Serial Number Prefixes 6021 on page 6 31 and 4 Port Configuration Serial ...

Page 351: ...plitter to A28 mixer brick W68 SR N5247 20088 1 rear panel port RF2 OUT J12 to W67 W75 F N5242 60024 1 A28 mixer brick D to A24 IF multiplexer P801 W76 F N5242 60019 1 A28 mixer brick R4 to A24 IF multiplexer P414 W77 F N5242 60020 1 A28 mixer brick R3 to A24 IF multiplexer P413 W78 F N5242 60023 1 A28 mixer brick C to A24 IF multiplexer P601 W80 F N5242 60013 1 A24 IF multiplexer board P203 to A1...

Page 352: ...ort 3 mechanical switch W135 SR N5247 20030 1 A52 port 4 mechanical switch to A62 port 4 70 GHz doubler W136 SR N5247 20031 1 A52 port 4 mechanical switch to A31 port 4 reference coupler W137 SR N5247 20097 1 A52 port 4 mechanical switch to PORT 4 SW SRC OUT J4 W138 SR N5247 20098 1 A52 port 4 mechanical switch to PORT 4 SW TSET J3 W204b SR N5247 20185 1 A25 HMA26 5 to A28 mixer brick 2 See also p...

Page 353: ...5 20023 N5247 20110 and N5247 20146 cables are only used with a legacy HMA26 5 p n 5087 7765 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chapter 7 Repairs and Figure 7 17 on page 38 and for details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configurations Serial Number Prefixes 6021 on page 6 31 and 4 Port Configuration Serial Number Pr...

Page 354: ...5245 20022 N5245 20023 N5247 20110 and N5247 20146 cables are only used with a legacy HMA26 5 p n 5087 7765 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chapter 7 Repairs and Figure 7 17 on page 38 and for details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configurations Serial Number Prefixes 6021 on page 6 31 and 4 Port Configuration S...

Page 355: ...erboard J5 16R N5245 60006 A23 test set motherboard J547 to A39 port 3 source attenuator 10R N5247 60020 A23 test set motherboard J206 to A47 port 3 receiver attenuator 4W P O A56 port 1 noise bypass switch to A59 noise receiver downconverter J42 port 1 Refer to 4 Port Configuration Option 423 with and without Option 029 S N Prefixes 6201 on page 6 105 2W N5247 60021 A23 test set motherboard J541 ...

Page 356: ...oard J6 24R N5247 60022 A23 test set motherboard J209 to A25 HMA26 5 J1 30R N5247 60018 A62 port 4 70 GHz doubler J1 to A23 test set motherboard J3 100R 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 2...

Page 357: ...e Guide 6 119 Replaceable Parts Replaceable Parts Listings Figure 6 42 Bottom Ribbon Cables and Wire Harnesses 4 Port Option 423 with and without Option 029 S N Prefixes 6201 Cables 3 18 21 and 26 apply only with Option 029 ...

Page 358: ...rt 4 reference coupler Test port 2 reference coupler A33 A34 A35 A36 5087 7778 4 Test port 1 coupler Test port 3 coupler Test port 4 coupler Test port 2 coupler A37 5087 7759 1 Reference mixer switch A38 A39 A40 A41 84905 60004 was 84905 60002 4 Test port 1 source attenuator Test port 3 source attenuator Test port 4 source attenuator Test port 2 source attenuator A46 A47 A48 A49 84905 60004 was 84...

Page 359: ...3 includes wire harness A73 Bias combiner port 4 includes wire harness A74 Bias combiner port 2 includes wire harness N5240 60058 2 front panel LED board a Part numbers in italic typeface are for rebuilt exchange assemblies Refer to Rebuilt Exchange Assemblies on page 6 4 b All new units built after August 2009 no longer use the N5242 60031 cable that was attached to connector P1001 and Source 2 A...

Page 360: ...eysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 43 Bottom Assemblies 4 Port Option 425 with and without Option 029 S N Prefixes 6021 A56 A57 A59 and A64 onl ith Option 029 ...

Page 361: ...EXT TSET DRIVE RF OUT J6 W69 SR N5247 20112 1 A27 mixer brick to EXT TSET DRIVE LO OUT J5 W70c SR N5247 20100 1 A25 HMA26 5 to A27 mixer brick 1 W71 F N5242 60017 1 A27 mixer brick A to A24 IF multiplexer P1 W72 F N5242 60021 1 A27 mixer brick R1 to A24 IF multiplexer P411 W73 F N5242 60022 1 A27 mixer brick R2 to A24 IF multiplexer P412 W74 F N5242 60018 1 A27 mixer brick B to A24 IF multiplexer ...

Page 362: ...6 SR N5247 20058 1 A32 port 2 ref coupler to front panel REF 2 SOURCE OUT W163 SR N5247 20117 1 A64 tuner to A56 port 1 noise bypass switch Option 029 only W164 SR N5247 20118 1 A64 tuner to A56 port 1 noise bypass switch Option 029 only W165 SR N5247 20119 1 Front panel port 1 CPLR THRU to A56 port 1 noise bypass switch Option 029 only W166 SR N5247 20124 1 Front panel port 2 CPLR THRU to A57 por...

Page 363: ...017 1 RF cable A70 LFE J7 to A24 IF Multiplexer P404 W215 F 8120 5017 1 RF cable A70 LFE J11 to A24 IF Multiplexer P804 a SR semirigid coaxial cable F flexible coaxial cable b The A26 splitter 5067 4086 and N5247 20111 N5245 20022 N5245 20023 N5247 20110 and N5247 20146 cables are only used with a legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 cables are used only with th...

Page 364: ...45 20023 N5247 20110 and N5247 20146 cables are only used with a legacy HMA26 5 p n 5087 7765 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chapter 7 Repairs and Figure 7 17 on page 38 and for details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configurations Serial Number Prefixes 6021 on page 6 31 and 4 Port Configuration Serial Number P...

Page 365: ...022 N5245 20023 N5247 20110 and N5247 20146 cables are only used with a legacy HMA26 5 p n 5087 7765 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chapter 7 Repairs and Figure 7 17 on page 38 and for details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configurations Serial Number Prefixes 6021 on page 6 31 and 4 Port Configuration Serial N...

Page 366: ...5242 60024 1 A28 mixer brick D to A24 IF multiplexer P801 W76 F N5242 60019 1 A28 mixer brick R4 to A24 IF multiplexer P414 W77 F N5242 60020 1 A28 mixer brick R3 to A24 IF multiplexer P413 W78 F N5242 60023 1 A28 mixer brick C to A24 IF multiplexer P601 W80 F N5242 60013 1 A24 IF multiplexer board P203 to A16 SPAM board J2 W82 F N5242 60015 1 A24 IF multiplexer board P603 to A16 SPAM board J5 W93...

Page 367: ... A34 port 3 test port coupler to A72 bias combiner port 3 W185 SR N5247 20165 1 Cable assy RF FP COUP THRU to A73 bias combiner port 4 W186 SR N5247 20171 1 Cable assy RF FP A35 port 4 test port coupler to A73 bias combiner port 4 W195 F N5240 60097 1 Cable long assy coaxial LFE RF Port 3 bias combiner RF IN to Port3 A70 LFE board W196 F Cable long assy coaxial LFE RF Port 4 bias combiner RF IN to...

Page 368: ...45 20023 N5247 20110 and N5247 20146 cables are only used with a legacy HMA26 5 p n 5087 7765 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chapter 7 Repairs and Figure 7 17 on page 38 and for details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configurations Serial Number Prefixes 6021 on page 6 31 and 4 Port Configuration Serial Number P...

Page 369: ...022 N5245 20023 N5247 20110 and N5247 20146 cables are only used with a legacy HMA26 5 p n 5087 7765 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chapter 7 Repairs and Figure 7 17 on page 38 and for details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configurations Serial Number Prefixes 6021 on page 6 31 and 4 Port Configuration Serial N...

Page 370: ...5245 60006 A23 test set motherboard J547 to A39 port 3 source attenuator 10R N5247 60020 A23 test set motherboard J206 to A47 port 3 receiver attenuator 4W P O A56 port 1 noise bypass switch to A59 noise receiver downconverter J42 port 1 Refer to 4 Port Configuration Option 425 with and without 029 S N Prefixes 6021 on page 6 120 2W N5240 60091 P O Bias combiners A19 test set motherboard J541 to A...

Page 371: ...ard J6 24R N5247 60022 A23 test set motherboard J209 to A25 HMA26 5 J1 30R N5247 60018 A62 port 4 70 GHz doubler J1 to A23 test set motherboard J3 100R 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 20...

Page 372: ...ervice Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 48 Bottom Ribbon Cables and Wire Harnesses 4 Port Option 425 with and without Option 029 S N Prefixes 6021 Cables 3 13 21 and 26 apply only with Option 029 ...

Page 373: ...Keysight N5247B Service Guide 6 135 Replaceable Parts Replaceable Parts Listings ...

Page 374: ...guration Option 401 S N Prefixes 6201 Reference Designator Part Numbera Qty Description A23 N5245 60157 Was N5247 60001 1 Test set motherboard A24 N5240 60062b Was N5240 60045 1 IF multiplexer board A25 N5240 63101 Was 5087 7765 1 LO Multiplier amplifier 26 5 HMA26 5 A27 A28 5087 7337 2 Mixer brick A29 A30 A31 A32 5087 7744 4 Test port 1 reference coupler Test port 3 reference coupler Test port 4 ...

Page 375: ...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 ...

Page 376: ...6 138 Keysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 49 Bottom Assemblies Standard 4 Port Configuration Option 401 S N Prefixes 6201 ...

Page 377: ...pler W31 SR N5247 20037 1 A29 port 1 ref coupler to front panel port 1 SOURCE OUT W32 SR N5247 20016 1 Port 1 CPLR THRU to A33 port 1 coupler W33 SR N5247 20078 1 A29 port 1 reference coupler to A37 reference mixer switch W34 SR N5247 20082 1 A33 port 1 coupler to front panel port 1 CPLR ARM W35 SR N5247 20023 1 A30 port 3 ref coupler to front panel port 3 SOURCE OUT W36 SR N5247 20006 1 port 3 CP...

Page 378: ...Prefixes 6021 on page 6 27 W62b SR N5247 20111 1 A25 HMA26 5 to A26 splitter W63b SR N5245 20023 1 RF cable A26 splitter to A27 mixer brick W64b SR N5245 20022 1 A26 splitter to A28 mixer brick W66 SR N5247 20109 1 W65 to rear panel EXT TSET DRIVE RF OUT J6 W68 SR N5247 20088 1 rear panel port RF2 OUT J12 to W67 W69 SR N5247 20112 1 A27 mixer brick to EXT TSET DRIVE LO OUT J5 W70c SR N5247 20100 1...

Page 379: ...er J500 W204b SR N5247 20185 1 A25 HMA26 5 to A28 mixer brick 2 a SR semirigid coaxial cable F flexible coaxial cable b The A26 splitter 5067 4086 and N5247 20111 N5245 20022 N5245 20023 N5247 20110 and N5247 20146 cables are only used with a legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 cables are used only with the new N5240 60101 HMA 26 5 If you are unclear which HMA2...

Page 380: ...6 142 Keysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 50 Bottom RF Cables Standard 4 Port Configuration Option 401 S N Prefixes 6201 ...

Page 381: ...Keysight N5247B Service Guide 6 143 Replaceable Parts Replaceable Parts Listings This page intentionally left blank ...

Page 382: ...set motherboard J4 3W N5247 60016 A23 test set motherboard J222 to ports 2 4 LED board J1 30R N5247 60018 A63 port 2 70 GHz doubler J1 to A23 test set motherboard J6 q 24R N5247 60022 A23 test set motherboard J209 to A25 HMA26 5 J1 30R N5247 60018 A62 port 4 70 GHz doubler J1 to A23 test set motherboard J3 s 100R N5242 60004 A18 system motherboard J1 to A23 test set motherboard J1 to A24 IF multip...

Page 383: ...Keysight N5247B Service Guide 6 145 Replaceable Parts Replaceable Parts Listings Figure 6 51 Bottom Ribbon Cables and Wire Harnesses Standard 4 Port Configuration Option 401 S N Prefixes 6201 ...

Page 384: ...t 4 coupler Test port 2 coupler A37 5087 7759 1 Reference mixer switch A38 A39 A40 A41 84905 60004 was 84905 60002 4 Test port 1 source attenuator Test port 3 source attenuator Test port 4 source attenuator Test port 2 source attenuator A42 A43 A44 A45 5087 7732 Was 5086 7020 4 Test port 1 bias tee Test port 3 bias tee Test port 4 bias tee Test port 2 bias tee A46 A47 A48 A49 84905 60004 was 84905...

Page 385: ...ew 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 ...

Page 386: ...6 148 Keysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 52 Bottom Assemblies 4 Port Options 419 S N Prefixes 6201 ...

Page 387: ...SR N5247 20107 12 front panel jumper W61 SR Refer to Top Cables All Cables All Options S N Prefixes 6021 on page 6 27 W62b SR N5247 20111 1 A25 HMA26 5 to A26 splitter W63b SR N5245 20023 1 RF cable A26 splitter to A27 mixer brick W66 SR N5247 20109 1 W65 to rear panel EXT TSET DRIVE RF OUT J6 W69 SR N5247 20112 1 A27 mixer brick to EXT TSET DRIVE LO OUT J5 W70c SR N5247 20100 1 A25 HMA26 5 to A27...

Page 388: ...W145 SR N5247 20066 1 REF 2 RCVR R2 IN to A27 mixer brick R2 W146 SR N5247 20058 1 A32 port 2 ref coupler to front panel REF 2 SOURCE OUT a SR semirigid coaxial cable F flexible coaxial cable b The A26 splitter 5067 4086 and N5247 20111 N5245 20022 N5245 20023 N5247 20110 and N5247 20146 cables are only used with a legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 cables are...

Page 389: ...Keysight N5247B Service Guide 6 151 Replaceable Parts Replaceable Parts Listings Figure 6 53 Bottom RF Cables 4 Port Options 419 Ports 1 and 2 S N Prefixes 6201 ...

Page 390: ...20067 1 REF 4 RCVR R4 IN to A69 3 dB pad on A28 mixer brick R4 W58 cap N5247 20138 2 4 mm cap for A28 mixer brick W64b SR N5245 20022 1 A26 splitter to A28 mixer brick W68 SR N5247 20088 1 rear panel port RF2 OUT J12 to W67 W75 F N5242 60024 1 A28 mixer brick D to A24 IF multiplexer P801 W76 F N5242 60019 1 A28 mixer brick R4 to A24 IF multiplexer P414 W77 F N5242 60020 1 A28 mixer brick R3 to A24...

Page 391: ...ceiver attenuator W122 SR N5247 20065 1 A48 port 4 receiver attenuator to A28 mixer brick D W204b SR N5247 20185 1 A25 HMA26 5 to A28 mixer brick 2 a SR semirigid coaxial cable F flexible coaxial cable b The A26 splitter 5067 4086 and N5247 20111 N5245 20022 N5245 20023 N5247 20110 and N5247 20146 cables are only used with a legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 ...

Page 392: ...45 20023 N5247 20110 and N5247 20146 cables are only used with a legacy HMA26 5 p n 5087 7765 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chapter 7 Repairs and Figure 7 17 on page 38 and for details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configurations Serial Number Prefixes 6021 on page 6 31 and 4 Port Configuration Serial Number P...

Page 393: ...247 60021 A23 test set motherboard J543 to A43 port 3 bias tee 2W N5247 60021 A23 test set motherboard J544 to A44 port 4 bias tee 3W N5247 60016 A23 test set motherboard J222 to ports 2 4 LED board J1 2W N5247 60021 A23 test set motherboard J542 to A45 port 2 bias tee 16R N5245 60006 A23 test set motherboard J548 to A40 port 4 source attenuator 16R N5245 60006 A23 test set motherboard J546 to A41...

Page 394: ... Replaceable Parts Replaceable Parts Listings 6 20R N5247 60015 A23 test set motherboard J552 to A28 mixer brick 2 J52 a nR n wires in a ribbon flat cable nW n wires in a wire harness Reference Designator Typea Part Number Description 26 ...

Page 395: ...Keysight N5247B Service Guide 6 157 Replaceable Parts Replaceable Parts Listings Figure 6 55 Bottom Ribbon Cables and Wire Harnesses 4 Port Options 419 S N Prefixes 6201 ...

Page 396: ...erence coupler A33 A34 A35 A36 5087 7778 4 Test port 1 coupler Test port 3 coupler Test port 4 coupler Test port 2 coupler A37 5087 7759 1 Reference mixer switch A38 A39 A40 A41 84905 60004 was 84905 60002 4 Test port 1 source attenuator Test port 3 source attenuator Test port 4 source attenuator Test port 2 source attenuator A42 A43 A44 A45 5087 7732 Was 5086 7020 4 Test port 1 bias tee Test port...

Page 397: ...nuator A28 mixer brick R1 N5240 60058 2 front panel LED board a Part numbers in italic typeface are for rebuilt exchange assemblies Refer to Rebuilt Exchange Assemblies on page 6 4 b All new units built after August 2009 no longer use the N5242 60031 cable that was attached to connector P1001 and Source 2 As a result of this change the IF multiplexer boards have had their P1001 connectors removed ...

Page 398: ...6 160 Keysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 56 Bottom Assemblies 4 Port Option 423 with and without 029 S N Prefixes 6201 ...

Page 399: ... panel EXT TSET DRIVE RF OUT J6 W69 SR N5247 20112 1 A27 mixer brick to EXT TSET DRIVE LO OUT J5 W70c SR N5247 20100 1 A25 HMA26 5 to A27 mixer brick 1 W71 F N5242 60017 1 A27 mixer brick A to A24 IF multiplexer P1 W72 F N5242 60021 1 A27 mixer brick R1 to A24 IF multiplexer P411 W73 F N5242 60022 1 A27 mixer brick R2 to A24 IF multiplexer P412 W74 F N5242 60018 1 A27 mixer brick B to A24 IF multi...

Page 400: ... SRC OUT J2 W142 SR N5247 20089 1 A53 port 2 mechanical switch to PORT 2 TSET IN J1 W143 SR N5247 20107 2 rear panel jumper W144 SR N5247 20071 1 A29 port 1 reference coupler to A37 reference mixer switch W145 SR N5247 20066 1 REF 2 RCVR R2 IN to A27 mixer brick R2 W146 SR N5247 20058 1 A32 port 2 ref coupler to front panel REF 2 SOURCE OUT W162 SR N5247 20120 1 A42 port 1 bias tee to A56 port 1 n...

Page 401: ...r details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configurations Serial Number Prefixes 6021 on page 6 31 and 4 Port Configuration Serial Number Prefixes 6021 on page 6 84 c On legacy instruments using the 5087 7765 HMA26 5 the N5245 20100 cable is used only on 2 port instruments On instruments with a new HMA26 5 the N5245 20100 cable is used in all instruments I...

Page 402: ...247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 57 Bottom RF Cables 4 Port Options 423 Ports 1 and 2 S N Prefixes 6201 Option 423 with 029 is shown but similar to Option 423 without Option 029 ...

Page 403: ...Keysight N5247B Service Guide 6 165 Replaceable Parts Replaceable Parts Listings Figure 6 58 Bottom RF Cables 4 Port Option 423 with Option 029 Ports 1 and 2 S N Prefixes 6201 ...

Page 404: ...splitter to A28 mixer brick W68 SR N5247 20088 1 rear panel port RF2 OUT J12 to W67 W75 F N5242 60024 1 A28 mixer brick D to A24 IF multiplexer P801 W76 F N5242 60019 1 A28 mixer brick R4 to A24 IF multiplexer P414 W77 F N5242 60020 1 A28 mixer brick R3 to A24 IF multiplexer P413 W78 F N5242 60023 1 A28 mixer brick C to A24 IF multiplexer P601 W80 F N5242 60013 1 A24 IF multiplexer board P203 to A...

Page 405: ...panel PORT 3 SW TSET IN J7 to A51 port 3 mechanical switch W135 SR N5247 20030 1 A52 port 4 mechanical switch to A62 port 4 70 GHz doubler W136 SR N5247 20031 1 A52 port 4 mechanical switch to A31 port 4 reference coupler W137 SR N5247 20097 1 A52 port 4 mechanical switch to PORT 4 SW SRC OUT J4 W138 SR N5247 20098 1 A52 port 4 mechanical switch to PORT 4 SW TSET J3 W204b SR N5247 20185 1 A25 HMA2...

Page 406: ...247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 59 Bottom RF Cables 4 Port Options 423 Ports 3 and 4 S N Prefixes 6201 Option 423 with 029 is shown but similar to Option 423 without Option 029 ...

Page 407: ...Keysight N5247B Service Guide 6 169 Replaceable Parts Replaceable Parts Listings Figure 6 60 Bottom RF Cables 4 Port Option 423 with Option 029 Ports 3 and 4 S N Prefixes 6201 ...

Page 408: ...herboard J5 16R N5245 60006 A23 test set motherboard J547 to A39 port 3 source attenuator 10R N5247 60020 A23 test set motherboard J206 to A47 port 3 receiver attenuator 4W P O A56 port 1 noise bypass switch to A59 noise receiver downconverter J42 port 1 Refer to 4 Port Configuration Option 423 with and without Option 029 S N Prefixes 6201 on page 6 158 2W N5247 60021 A23 test set motherboard J541...

Page 409: ...ard J6 24R N5247 60022 A23 test set motherboard J209 to A25 HMA26 5 J1 30R N5247 60018 A62 port 4 70 GHz doubler J1 to A23 test set motherboard J3 100R 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 20...

Page 410: ...ervice Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 61 Bottom Ribbon Cables and Wire Harnesses 4 Port Option 423 with and without Option 029 S N Prefixes 6201 Cables 3 18 21 and 26 apply only with Option 029 ...

Page 411: ...eference coupler Test port 2 reference coupler A33 A34 A35 A36 5087 7778 4 Test port 1 coupler Test port 3 coupler Test port 4 coupler Test port 2 coupler A37 5087 7759 1 Reference mixer switch A38 A39 A40 A41 84905 60004 was 84905 60002 4 Test port 1 source attenuator Test port 3 source attenuator Test port 4 source attenuator Test port 2 source attenuator A46 A47 A48 A49 84905 60004 was 84905 60...

Page 412: ... 3 includes wire harness A73 Bias combiner port 4 includes wire harness A74 Bias combiner port 2 includes wire harness N5240 60058 2 front panel LED board a Part numbers in italic typeface are for rebuilt exchange assemblies Refer to Rebuilt Exchange Assemblies on page 6 4 b All new units built after August 2009 no longer use the N5242 60031 cable that was attached to connector P1001 and Source 2 ...

Page 413: ...t N5247B Service Guide 6 175 Replaceable Parts Replaceable Parts Listings Figure 6 62 Bottom Assemblies 4 Port Option 425 with and without Option 029 S N Prefixes 6021 A56 A57 A59 and A64 only with Option 029 ...

Page 414: ... EXT TSET DRIVE RF OUT J6 W69 SR N5247 20112 1 A27 mixer brick to EXT TSET DRIVE LO OUT J5 W70c SR N5247 20100 1 A25 HMA26 5 to A27 mixer brick 1 W71 F N5242 60017 1 A27 mixer brick A to A24 IF multiplexer P1 W72 F N5242 60021 1 A27 mixer brick R1 to A24 IF multiplexer P411 W73 F N5242 60022 1 A27 mixer brick R2 to A24 IF multiplexer P412 W74 F N5242 60018 1 A27 mixer brick B to A24 IF multiplexer...

Page 415: ...ck R2 W146 SR N5247 20058 1 A32 port 2 ref coupler to front panel REF 2 SOURCE OUT W163 SR N5247 20117 1 A64 tuner to A56 port 1 noise bypass switch Option 029 only W164 SR N5247 20118 1 A64 tuner to A56 port 1 noise bypass switch Option 029 only W165 SR N5247 20119 1 Front panel port 1 CPLR THRU to A56 port 1 noise bypass switch Option 029 only W166 SR N5247 20124 1 Front panel port 2 CPLR THRU t...

Page 416: ... 8120 5017 1 RF cable A70 LFE J11 to A24 IF Multiplexer P804 a SR semirigid coaxial cable F flexible coaxial cable b The A26 splitter 5067 4086 and N5247 20111 N5245 20022 N5245 20023 N5247 20110 and N5247 20146 cables are only used with a legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 cables are used only with the new N5240 60101 HMA 26 5 If you are unclear which HMA26 5...

Page 417: ...Keysight N5247B Service Guide 6 179 Replaceable Parts Replaceable Parts Listings Figure 6 63 Bottom RF Cables 4 Port Options 425 Ports 1 and 2 S N Prefixes 6021 ...

Page 418: ...6 180 Keysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 64 Bottom RF Cables 4 Port Option 425 with Option 029 Ports 1 and 2 S N Prefixes 6021 ...

Page 419: ...242 60024 1 A28 mixer brick D to A24 IF multiplexer P801 W76 F N5242 60019 1 A28 mixer brick R4 to A24 IF multiplexer P414 W77 F N5242 60020 1 A28 mixer brick R3 to A24 IF multiplexer P413 W78 F N5242 60023 1 A28 mixer brick C to A24 IF multiplexer P601 W80 F N5242 60013 1 A24 IF multiplexer board P203 to A16 SPAM board J2 W82 F N5242 60015 1 A24 IF multiplexer board P603 to A16 SPAM board J5 W93 ...

Page 420: ... 20164 1 Cable assy RF FP A34 port 3 test port coupler to A72 bias combiner port 3 W185 SR N5247 20165 1 Cable assy RF FP COUP THRU to A73 bias combiner port 4 W186 SR N5247 20171 1 Cable assy RF FP A35 port 4 test port coupler to A73 bias combiner port 4 W195 F N5240 60097 1 Cable long assy coaxial LFE RF Port 3 bias combiner RF IN to Port3 A70 LFE board W196 F Cable long assy coaxial LFE RF Port...

Page 421: ...Keysight N5247B Service Guide 6 183 Replaceable Parts Replaceable Parts Listings Figure 6 65 Bottom RF Cables 4 Port Options 425 Ports 3 and 4 S N Prefixes 6021 ...

Page 422: ...6 184 Keysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 Figure 6 66 Bottom RF Cables 4 Port Option 425 with Option 029 Ports 3 and 4 S N Prefixes 6021 ...

Page 423: ... on page 6 173 30R N5247 60018 A60 port 1 70 GHz doubler J1 to A23 test set motherboard J4 s 30R N5247 60018 A61 port 3 70 GHz doubler J1 to A23 test set motherboard J5 16R N5245 60006 A23 test set motherboard J547 to A39 port 3 source attenuator 10R N5247 60020 A23 test set motherboard J206 to A47 port 3 receiver attenuator 4W P O A56 port 1 noise bypass switch to A59 noise receiver downconverter...

Page 424: ...er downconverter J1 to A23 test set motherboard J548 Option 029 only 30R N5247 60018 A63 port 2 70 GHz doubler J1 to A23 test set motherboard J6 24R N5247 60022 A23 test set motherboard J209 to A25 HMA26 5 J1 30R N5247 60018 A62 port 4 70 GHz doubler J1 to A23 test set motherboard J3 100R N5242 60004 A18 system motherboard J1 to A23 test set motherboard J1 to A24 IF multiplexer board J1 25R E4410 ...

Page 425: ...e Guide 6 187 Replaceable Parts Replaceable Parts Listings Figure 6 67 Bottom Ribbon Cables and Wire Harnesses 4 Port Option 425 with and without Option 029 S N Prefixes 6021 Cables 3 13 21 and 26 apply only with Option 029 ...

Page 426: ...6 188 Keysight N5247B Service Guide Replaceable Parts Replaceable Parts Listings 6 ...

Page 427: ...foot and screw Refer to External Hardware and Miscellaneous Parts All Options on page 6 202 6960 0149 1 Hole plug 2190 0958 Was 2190 0034 Lock washer 0380 0644 Jack screw q N5247 00010 1 rear panel 3050 2330 Lock washer For A24 IF MUX board connectors s 2950 0414 Hex nut For A24 IF MUX board connectors 2190 0584 Lock washer 0380 4670 Jack screw 0 442 inch length 1251 7812 Jack screw 0 5 inch lengt...

Page 428: ...29 Ports 1 and 2 S N Prefixes 6201 on page 6 161 or 2 Port Configuration Option 224 with and without Option 029 S N Prefixes 6201 on page 6 72 2190 0102 Lock washer for 8120 5063 BNC cable 2950 0035 Hex nut for 8120 5063 BNC cable 8120 5063 2 BNC cable 6960 0523 5 Hole plug 2 used for Option 224 5 used for Option 201 219 400 and 419 none used for Option 423 6960 0076 1 Hole plug 1 used for Option ...

Page 429: ...Keysight N5247B Service Guide 6 191 Replaceable Parts Replaceable Parts Listings Figure 6 68 Rear Panel Assembly All Options ...

Page 430: ...on B1 3160 4199 5 Fan 3160 0281 Was 3160 4198 5 Fan guard 0361 1272 20 Fan rivet N5245 00006 1 Fan bracket for 2 fans E4440 00021 2 Fan EMI shield for 2 fans N5245 00003 1 Fan bracket for 3 fans 0515 0372 Machine screw M3 0 x 8 pan head To attach fan assemblies to chassis Chassis Refer to Internal Hardware and Miscellaneous Parts All Options on page 6 200 ...

Page 431: ...Keysight N5247B Service Guide 6 193 Replaceable Parts Replaceable Parts Listings Figure 6 69 Fan Assemblies Side View All Options ...

Page 432: ...hassis 0400 0353 18 Grommets for A19 midplane board qty 6 and A18 system motherboard qty 12 not shown 5041 7250 2 Wire loom cable clip 0515 0380 Machine screw M4 0 x 10 pan head To attach all doubler boards the Spam board all Synth boards and all source boards to chassis inner panels not shown N5247 20136 2 Source 1 and source 2 bracket On 2 port models source 2 is included only with Option 224 no...

Page 433: ...Keysight N5247B Service Guide 6 195 Replaceable Parts Replaceable Parts Listings Figure 6 70 Top Hardware and Miscellaneous Parts Top View All Options ...

Page 434: ... to chassis A25 HMA26 5 to side of test set deck reference coupler assemblies to test set deck reference coupler assemblies to attenuator assemblies A37 reference mixer switch to its bracket reference mixer switch bracket to test set deck coupler plate assy to front of test set deck bias tee brackets to the test set deck brace N5247 20131 to attenuator reference coupler assemblies switch bracket a...

Page 435: ...20129 2 Bracket For both bias tee pairs N5247 20149 Bracket For LFE bias combiners ports 1 2 3 4 Implied by but not shown in figure N5247 00008 1 Test set front plate 2 port models only N5247 00009 1 Test set front plate 4 port models only N5247 00003 1 Bracket front bottom side for semi rigid cables 0515 0374 Machine screw M3 0 x 10 pan head To attach cross bracket to test set deck bracket N5247 ...

Page 436: ...ls Between port 1 port 2 couplers test set front sub panel 0515 0669 Machine screw M4 0 x 0 7 pan head To attach A24 IF MUX to test set deck N5242 00019 1 Stabilizer bracket Between A23 test set motherboard and A24 IF mux board N5242 00048 2 Protective guard for front panel jumpers side N5242 00049 1 Protective guard for front panel jumpers center 4 port models only N5247 00024 1 Protective guard ...

Page 437: ...Keysight N5247B Service Guide 6 199 Replaceable Parts Replaceable Parts Listings Figure 6 71 Bottom Hardware and Miscellaneous Parts ...

Page 438: ...e bracket N5247 00015 1 Right side inner bracket N5247 00001 1 Chassis 0515 0372 Machine screw M3 0 x 8 pan head To attach midplane bracket to left and right side inner brackets front bracket to left and right side inner brackets chassis to left and right side inner brackets midplane bracket and front bracket motherboard to chassis bracket long center N5247 00013 1 Front bracket N5242 40002 24 PC ...

Page 439: ...Keysight N5247B Service Guide 6 201 Replaceable Parts Replaceable Parts Listings Figure 6 72 Internal Hardware and Miscellaneous Parts All Options ...

Page 440: ... 5041 7906 4 Bottom foot N9020 40007 4 Hole plug When analyzer is rack mounted 5065 4673 24 Bulkhead connector 1 85 mm female 1250 3516 24 Nut for bulkhead connector 1250 3310 24 Washer for bulkhead connector 0515 0372 Machine screw M3 0 x 8 pan head To attach inner cover N5247 00004 1 Inner cover retaining shield 0515 1227 Machine screw M3 0 x 6 flat head To attach inner cover front panel Not sho...

Page 441: ...Keysight N5247B Service Guide 6 203 Replaceable Parts Replaceable Parts Listings Figure 6 73 External Hardware and Miscellaneous Parts All Options ...

Page 442: ... ordered Part 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 N5247 90001 GPIB Cables GPIB Adapter GPIB cable 0 5 meter 1 6 feet 10833D GPIB cable 1 meter 3 3 feet 10833A GPIB cable 2 meter 6 6 feet 10833B GPIB cable 4 meter 13 2 feet 10833C G...

Page 443: ...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 includes the following separately orderable items Rack mount kit rack mount flanges and hardware 5063 1543 Rack mount rail set E3663AC Rack mount kit for analyzers with handles Option 1CP N523...

Page 444: ...s Available on page 2 3 for information on upgrades that are available for the N5247B analyzer Refer to the section Analyzer Options Accessories and Upgrades Available on page 2 3 for a complete description of each option included in the upgrades a For rack mount use you must replace factory installed ruggedized handles thick aluminum no trim with clas sic handles thin aluminum with plastic trim i...

Page 445: ...age 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 Resetting the Mechanical Counter EEPROM Backup A table for the proper tests verifications and adjustments to perform on your an...

Page 446: ...rs 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 th...

Page 447: ...ic discharge ESD Perform the following procedures only at a static safe workstation and wear a grounded wrist strap 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 a...

Page 448: ...y s n prefixes 6021 only 26 5 GHz source boards Doubler boards Noise board Frequency reference board s n prefixes 6021 only Signal processing ADC module SPAM board page 7 18 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 amp...

Page 449: ...h Optional Port 3 mechanical switch Optional Port 4 mechanical switch Optional Port 2 mechanical switch Optional page 7 57 A54 Combiner Optional page 7 57 A55 Solid state drive page 7 60 A56 Port 1 noise bypass switch Optional page 7 57 A57 Port 2 noise bypass switch Optional page 7 57 A59 noise receiver downconverter Optional page 7 60 A60 A61 A62 A63 70 GHz doubler 1 70 GHz doubler 3 70 GHz doub...

Page 450: ...ar of the analyzer and remove it Removing the Inner Cover Refer to Figure 7 1 for this procedure 1 With a T 10 TORX driver remove the 12 pan head screws item 2 With a T 10 TORX driver remove the 9 flat head screws item 3 Lift off the cover Replacement Procedure 1 On the top side of the PNA carefully position the gray flex cables so they can t be pinched between the covers and the rails 2 On the bo...

Page 451: ...Keysight N5247B Service Guide 7 7 Repair and Replacement Procedures Removing the Covers Figure 7 1 Outer and Inner Cover Removal ...

Page 452: ...mi rigid jumpers item from the front panel 4 With a T 10 TORX driver remove the 12 screws item from the sides of the frame 5 Remove the lower panel overlay 6 With a T 10 TORX remove the 2 screws 2 Port or 4 screws 4 Port 7 Slide the front panel over the test port connectors 8 Disconnect the ribbon cable item from the A1 front panel interface board Replacement Procedure 1 Reverse the order of the r...

Page 453: ...Keysight N5247B Service Guide 7 9 Repair and Replacement Procedures Removing and Replacing the Front Panel Assembly Figure 7 2 Front Panel Assembly Removal ...

Page 454: ... 1 Disconnect the power cord 2 Remove the front panel assembly Refer to Removing and Replacing the Front Panel Assembly on page 7 8 Removing the RPG Assembly 1 Remove the round knob RPG from the front panel by gently pulling the knob forward 2 Disconnect the RPG to Interface board cable item 24 3 With the 11 mm socket wrench remove the RPG board s washer and hex nut 4 Remove RPG assembly from the ...

Page 455: ... controller board and front panel interface board 2 Raise the retaining clamps on the LCD display flat flex cable s two connectors item 15 3 Disconnect the flat flex cable from the touchscreen item 15 4 With the T 8 TORX remove the 4 screws item on the touchscreen controller board 5 Remove the touchscreen controller board from the mounting plate Removing the Power Switch Board and Power Button Key...

Page 456: ...A3 display assembly from the front panel assembly 3 Raise the retaining clamps on the LCD display flat flex cable s two connectors item 15 4 Disconnect the flat flex cable from the touchscreen item 15 5 The LED driver board cable item 22 can be removed from the connection on the LCD Display 6 The LCD display cable item 18 can be removed by removing the three screws item 17 that attach it to the LC...

Page 457: ...he 2 screws item 23 on the 2nd side bracket item 21 11 The touch screen can now be removed from the front panel assembly Note the orientation of the touch screen in the front panel assembly for installation of the new touch screen Figure 7 3 Front Panel Sub assemblies Removal During re assembly of the side brackets to the LCD display it is very important to avoid over tightening ...

Page 458: ...e Repair and Replacement Procedures Removing and Replacing the A1 A3 and Other Front Panel Subassemblies 7 Figure 7 4 A3 Display Assembly with LCD Display Cables Figure 7 5 Remove LCD Cable LCD to LED Inverter Board Cable Side Brackets ...

Page 459: ... and Replacement Procedures Removing and Replacing the A1 A3 and Other Front Panel Subassemblies Figure 7 6 Remove LCD Mounting Plate to LCD Display LCD Display Cable Figure 7 7 Removing the Flat Flex Cable from the LCD to the Controller Board ...

Page 460: ...7B Service Guide Repair and Replacement Procedures Removing and Replacing the A1 A3 and Other Front Panel Subassemblies 7 Figure 7 8 Power Keypad to Power Button Board Figure 7 9 Remove Speaker Assembly and Mounting Foam ...

Page 461: ...ing and Replacing the A1 A3 and Other Front Panel Subassemblies 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 92 ...

Page 462: ...or A5 and A10 source boards Refer to Figure 6 7 on page 6 23 for cable locations a A10 source board only on the bottom side of the analyzer disconnect the cables from the A12 and A13 boards item b A5 source board only on the top side of the analyzer disconnect all visible semirigid cables from the A4 A7 and A8 boards c On the top side of the analyzer remove two screws item one at each end of the b...

Page 463: ... 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 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 ...

Page 464: ...7 20 Keysight N5247B Service Guide Repair and Replacement Procedures Removing and Replacing the A4 A17 Boards 7 This page intentionally left blank ...

Page 465: ...ssembly on page 7 28 6 Disconnect the rear panel cables 7 Remove the threaded hardware from the rear panel 8 Remove the rear panel 9 Remove the A22 GPIB board Refer to Removing 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 Board...

Page 466: ...e screws item that secure the front bracket to the chassis left inner panel 18 Remove six screws item that secure the A18 system motherboard to the chassis 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 21 Remove the twelve rubber grommets from the A18 system ...

Page 467: ...Keysight N5247B Service Guide 7 23 Repair and Replacement Procedures Removing and Replacing the A18 System Motherboard Figure 7 10 A18 System Motherboard Removal ...

Page 468: ...m 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 remova...

Page 469: ...Keysight N5247B Service Guide 7 25 Repair and Replacement Procedures Removing and Replacing the A19 Midplane Board Figure 7 11 A19 Midplane Board Removal ...

Page 470: ...g the Covers on page 7 6 3 Remove the three flat head screws item from the power supply bracket 4 Remove the seven pan head screws item from the power supply rear panel 5 Slide the A20 power supply assembly out the rear 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 re...

Page 471: ...Keysight N5247B Service Guide 7 27 Repair and Replacement Procedures Removing and Replacing the A20 Power Supply Assembly Figure 7 12 A20 Power Supply Assembly Removal ...

Page 472: ... 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 drive for reinstallation in the new A21 CPU board assembly Refer to Removing and Replacing the A55...

Page 473: ...Keysight N5247B Service Guide 7 29 Repair and Replacement Procedures Removing and Replacing the A21 CPU Board Assembly Figure 7 13 A21 CPU Board Assembly Removal ...

Page 474: ...ng the Covers on page 7 6 3 Remove the A20 power supply assembly Refer to Removing and Replacing the A20 Power Supply Assembly on page 7 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 84 6 Slide the A22 GPIB board out the rear of the analyzer Replacement ...

Page 475: ...Keysight N5247B Service Guide 7 31 Repair and Replacement Procedures Removing and Replacing the A22 GPIB Board Figure 7 14 A22 GPIB Board Removal ...

Page 476: ...t motherboard if possible Run EEBackup exe using the directory for your Windows operating system Windows 7 OS C Program Files x86 Agilent Network Analyzer Service EEBackup exe Click on Save EEPROM Backup and then click on Backup TSMB Memory Windows 10 OS 32 bit C Program Files x86 Keysight Network Analyzer Service EEBackup exe Click on Save EEPROM Backup and then click on Backup TSMB Memory The fi...

Page 477: ...A23 test set motherboard 8 Slide the A23 test set motherboard toward the front of the instrument until the rear panel BNC connectors are free of the rear panel then lift the motherboard and remove it from the analyzer Replacement Procedure 1 Reverse the order of the removal procedure 2 Perform the post repair adjustments verifications and performance tests that pertain to this removal procedure Re...

Page 478: ...cables item from the A24 IF multiplexer board 7 Remove connector hardware item from five rear panel RF connectors 8 Remove connector hardware item from the rear panel PULSE I O 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 in...

Page 479: ...Keysight N5247B Service Guide 7 35 Repair and Replacement Procedures Removing and Replacing the A24 IF Multiplexer Board Figure 7 15 A24 IF Multiplexer Board Removal ...

Page 480: ...dure 1 Reverse the order of the removal procedure Torque all RF 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 92 Be careful not to damage the center pins of the semirigid cables Some flexing of the cables is necessary to remove the assembly However do not over bend the semi...

Page 481: ...e 7 16 A25 HMA26 5 Removal Verify the Model Version of HMA26 5 Installed This upgrade kit contains components for use with PNA models using the legacy HMA26 5 part number 5087 7765 If your PNA has the newer HMA26 5 part number N5240 60101 installed you may discard these parts A26 splitter 5067 4086 W62 N5247 20111 ...

Page 482: ...dures Removing and Replacing the A25 HMA26 5 7 W63 N5245 20023 W64 N5245 20022 The new N5240 60101 HMA26 5 has the splitter integrated into the assembly Refer to Figure 7 17 on page 7 38 Figure 7 17 Comparison of Legacy HMA26 5 5087 7765 and New HMA26 5 N5240 60101 ...

Page 483: ...nt Procedure 1 Reverse the order of the removal procedure 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 92 1 The A26 splitter 5067 4086 and N5247 20111 N5245 20022 N5245 20023 and N5247 20110 cables are only used with a legacy HMA26 5 p n 5087 7765 The N5240 ...

Page 484: ...legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 cables are used only with the new N5240 60101 HMA 26 5 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chap ter 7 Repairs and Figure 7 17 on page 38 and for details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configurations Serial Number Prefixes 6021 on page 6 31 and 4...

Page 485: ...d 6 Disconnect the ribbon cables item from each of the mixer bricks 7 Remove ten screws item from the mixer brick mounting block 8 Move the disconnected semirigid cables out of the 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 semiri...

Page 486: ...o this removal procedure Refer to Table 7 2 on page 7 92 Figure 7 19 A27 and A28 Mixer Bricks Removal1 1 The A26 splitter 5067 4086 and N5247 20111 N5245 20022 N5245 20023 and N5247 20110 cables are only used with a legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 cables are used only with the new N5240 60101 HMA 26 5 If you are unclear which HMA26 5 assembly your PNA has i...

Page 487: ...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 reference coupler to be replaced to the reference coupler mountin...

Page 488: ...247 20110 cables are only used with a legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 cables are used only with the new N5240 60101 HMA 26 5 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chap ter 7 Repairs and Figure 7 17 on page 38 and for details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configurations Serial N...

Page 489: ...5247B Service Guide 7 45 Repair and Replacement Procedures Removing and Replacing the A29 A32 Reference Couplers and Reference Coupler Mounting Brackets Figure 7 21 Orientation of Reference Couplers with Brackets ...

Page 490: ... item from each coupler to be removed 6 Disconnect the wire harness item from the corresponding front panel LED board and place it out of the way 7 Remove the coupler nut item from each coupler to be removed 8 Move the disconnected semirigid cables out of the way and remove the coupler s from the analyzer It may be necessary to loosen the connector at the other end of some of the semirigid cables ...

Page 491: ... A33 A36 Test Port Couplers Torque all connectors to 10 in lbs Torque coupler nuts to 72 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 92 Figure 7 22 A33 through A36 Test Port Couplers Removal1 ...

Page 492: ...connector at the other end of some of the semirigid cables to allow them to be moved enough 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 1 The A26 splitter 5067 4086 and N5247 20111 N5245 20022 N5245 20023 and...

Page 493: ...reference mixer switch into the analyzer loosely install the two mounting screws item Connect the four semirigid cables item and torque the connectors to 10 in lbs then tighten the two mounting screws item 2 Perform the post repair adjustments verifications and performance tests that pertain to this removal procedure Refer to Table 7 2 on page 7 92 ...

Page 494: ...7 50 Keysight N5247B Service Guide Repair and Replacement Procedures Removing and Replacing the A37 Reference Mixer Switch 7 Figure 7 23 A37 Reference Mixer Switch Removal ...

Page 495: ... cables item from each attenuator to be removed It may be necessary to remove additional cables to remove the attenuator bracket If so note the location and orientation of each for reinstallation later 6 Remove four screws item that secure each attenuator bracket to the test set deck 7 Move the disconnected semirigid cables out of the way and lift the attenuator bracket out of the analyzer with th...

Page 496: ...edure Refer to Table 7 2 on page 7 92 Figure 7 24 Source and Receiver Attenuators1 1 The A26 splitter 5067 4086 and N5247 20111 N5245 20022 N5245 20023 and N5247 20110 cables are only used with a legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 cables are used only with the new N5240 60101 HMA 26 5 If you are unclear which HMA26 5 assembly your PNA has installed refer to Ch...

Page 497: ... Service Guide 7 53 Repair and Replacement Procedures Removing and Replacing the A38 A41 Source Attenuators and the A46 A49 Receiver Attenuators Figure 7 25 Orientation of Source and Receiver Attenuators with Brackets ...

Page 498: ...le item from the bias tee 6 Remove two test set deck screws item from the bias tee block to be removed 7 Move the disconnected semirigid cables out of the way and remove the bias tee block from 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 8 Remove two screws from the bias tee in order to remove it from th...

Page 499: ... with a legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 cables are used only with the new N5240 60101 HMA 26 5 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chap ter 7 Repairs and Figure 7 17 on page 38 and for details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configurations Serial Number Prefixes 6021 on page 6 ...

Page 500: ...7 56 Keysight N5247B Service Guide Repair and Replacement Procedures Removing and Replacing the A42 A45 Bias Tees 7 Figure 7 27 Orientation of Bias Tees with Block ...

Page 501: ...racket to be removed If removing the A54 combiner disconnect three semirigid cables item from it 5 Remove four screws item that secure the switch bracket to the test set deck 6 Move the disconnected semirigid cables out of the way and remove the switch bracket with the bypass switch attached from the analyzer It may be necessary to loosen the connector at the other end of some of the semirigid cab...

Page 502: ...ge 7 92 Figure 7 28 A50 through A53 Bypass Switches and A54 Combiner Removal1 1 The A26 splitter 5067 4086 and N5247 20111 N5245 20022 N5245 20023 and N5247 20110 cables are only used with a legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 cables are used only with the new N5240 60101 HMA 26 5 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chap te...

Page 503: ...Keysight N5247B Service Guide 7 59 Repair and Replacement Procedures Removing and Replacing the A50 A53 Bypass Switches and the A54 Combiner Figure 7 29 Orientation of Bypass Switches with Bracket ...

Page 504: ...iles that you wish to preserve Obsolete Reference only If installing an SSD for Windows 7 for more information on the N8984A SSD refer to the Windows 7 Operating System Upgrade Kit Installation Note available online at https www keysight com us en assets 9018 04311 installation guides 9018 04311 pdf N8984 90001 Obsolete Reference only If installing an SSD for Windows 10 for more information on the...

Page 505: ... Figure 7 30 Solid State Drive Assembly Removal Reinstalling the SSD Reverse the order of the removal procedure Install Backup Files Onto the New Solid State Drive The files that were previously saved onto a USB flash memory drive must now be installed onto the new SSD The network analyzer must be powered up and operating ...

Page 506: ...irigid cables item from each 70 GHz doubler on the mounting bracket to be removed 6 Disconnect the ribbon cable item from each doubler 7 Remove six screws item that attach the doubler mounting bracket to the test set deck 8 Move the disconnected semirigid cables out of the way and lift the doubler mounting bracket with the two doublers attached out of the analyzer just enough to allow the gray fle...

Page 507: ...63 70 GHz Doublers Removal1 1 The A26 splitter 5067 4086 and N5247 20111 N5245 20022 N5245 20023 and N5247 20110 cables are only used with a legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 cables are used only with the new N5240 60101 HMA 26 5 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chap ter 7 Repairs and Figure 7 17 on page 38 and for det...

Page 508: ... make note of these cable connections for reconnection later 5 Disconnect the A56 bypass switch wire harness cable item from the A59 noise receiver 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 Remove the two screws item that secure the switch to the switch bracket 7 Move the disconnected semirigid ...

Page 509: ...A56 Port 1 Noise Bypass Switch Removal1 1 The A26 splitter 5067 4086 and N5247 20111 N5245 20022 N5245 20023 and N5247 20110 cables are only used with a legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 cables are used only with the new N5240 60101 HMA 26 5 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chap ter 7 Repairs and Figure 7 17 on page 38...

Page 510: ...do make note of these cable connections for reconnection later 5 Disconnect the A57 bypass switch wire harness cable item from the A59 noise receiver 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 Remove two screws item that secure the switch to the switch bracket 7 Move the disconnected semirigid ca...

Page 511: ...A57 Port 2 Noise Bypass Switch Removal1 1 The A26 splitter 5067 4086 and N5247 20111 N5245 20022 N5245 20023 and N5247 20110 cables are only used with a legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 cables are used only with the new N5240 60101 HMA 26 5 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chap ter 7 Repairs and Figure 7 17 on page 38...

Page 512: ...ion 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 5 Loosen three screws item that secure the A59 noise receiver downconverter to the chassis 6 Move the disconnected cables out of the way and remove the A59 noise receiver downconverter from the analyzer It may be necessary to loosen the other end o...

Page 513: ...es are only used with a legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 cables are used only with the new N5240 60101 HMA 26 5 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chap ter 7 Repairs and Figure 7 17 on page 38 and for details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configurations Serial Number Prefixes...

Page 514: ...onnection later 5 Disconnect the A64 tuner wire harness cable item from the A59 noise receiver downconverter Make note of the routing of this wire harness so that it can be rerouted later in the same manner 6 Remove two screws item that secure the A64 tuner to its bracket 7 Move the disconnected semirigid cables out of the way and remove the tuner from the analyzer It may be necessary to loosen th...

Page 515: ... legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 cables are used only with the new N5240 60101 HMA 26 5 If you are unclear which HMA26 5 assembly your PNA has installed refer to Chap ter 7 Repairs and Figure 7 17 on page 38 and for details on A26 splitter and cabling refer to your option model in Chapter 6 2 Port Configurations Serial Number Prefixes 6021 on page 6 31 and ...

Page 516: ...2 38 N m 5 16 inch open end torque wrench torque to 10 in lb or 1 13 N m ESD grounding wrist strap Removal Procedure Refer to Figure 7 36 on page 7 73 Figure 7 37 on page 7 74 Figure 7 39 on page 7 76 Figure 7 40 on page 7 77 and Figure 7 41 on page 7 78 for this procedure 1 Disconnect the power cord 2 Remove the outer cover Refer to Removing the Covers on page 7 6 3 Position the analyzer bottom s...

Page 517: ...Procedures Removing and Replacing the A70 or A75 Low Frequency Extension LFE Board 5 Disconnect the 8121 2919 and N5245 60005 ribbon cables Refer to Figure 7 36 on page 7 73 Figure 7 36 Disconnect Ribbon Cables from Rear Panel Connectors 8121 2919 N5245 60005 ...

Page 518: ...rd 7 6 Disconnect ALL gray flexible RF cables item through from the A70 A75 LFE board For Version 6 Synthesizers refer to Figure 7 37 on page 7 74 For Version 7 Synthesizers refer to Figure 7 38 on page 7 75 Figure 7 37 Version 6 Synthesizers A70 4 Port LFE Board Remove Cables 8120 5014 x2 8120 5017 x3 N5242 60079 N5242 60027 N5242 60080 ...

Page 519: ...Repair and Replacement Procedures Removing and Replacing the A70 or A75 Low Frequency Extension LFE Board Figure 7 38 Version 7 Synthesizers A70 4 Port LFE Board Remove Cables 8120 5014 x2 8120 5017 x3 N5242 60079 N5242 60027 N5242 60080 ...

Page 520: ...rt 1 bias combiner RF IN cable from the Port1 connector on the LFE board Refer to Figure 7 39 on page 7 76 Figure 7 39 Remove A71 bias combiner cable N5240 60097 from Port1 connector on the A70 LFE board 8 A70 LFE boards only Remove port 3 bias combiner RF IN cable from the Port3 connector on the LFE board Similar to Figure 7 39 on page 7 76 N5240 60097 ...

Page 521: ...n LFE Board 9 Remove A74 port 2 bias combiner RF IN cable to Port2 connector on the LFE board Figure 7 40 A74 port 2 bias combiner cable N5240 60097 from Port2 connector on the A70 LFE board 10 A70 LFE boards only Remove port 4 bias combiner RF IN cable from the Port4 connector on the LFE board Similar to Figure 7 40 on page 7 77 ...

Page 522: ... Removal is Similar 12 Remove the two screws from the LFE board item Save for reuse Refer to Figure 7 41 on page 7 78 13 Lift the LFE board N5291 60001 and remove it from the analyzer Refer to Figure 7 41 on page 7 78 Replacement Procedure 1 Reverse the order of the removal procedure Attach the new A70 A75 LFE board to the standoffs using the screws removed from the old one 2 Perform the post repa...

Page 523: ...efer to Removing the Covers on page 7 6 3 Position the analyzer bottom side up 4 Remove the A23 test set motherboard Refer to Removing and Replacing the A23 Test Set Motherboard on page 7 32 5 Disconnect the two semirigid cables item and from the bias tee combiner to be removed Refer to Figure 7 42 on page 7 81 6 Remove two screws from the bias tee combiner and bracket to chassis assembly to be re...

Page 524: ... the chassis to 9 in lbs Mark the bias combiner connectors with a fine permanent marker Refer to Figure 7 46 on page 7 83 Remember to place the cable ground clamp on the bias tee combiner s RF IN connector Torque the cable ground clamp to bias combiner to 6 in lbs Torque the bias combiner with bracket assembly to the chassis screws x2 to 9 in lbs 2 As shown in Figure 7 43 on page 7 81 position the...

Page 525: ...ombiners Figure 7 42 A71 A74 Bias Tee Combiners and Cables Removal N5222B Option 420 Shown All Other PNA LFE Options are Similar Figure 7 43 Remove Bias Combiner Bracket Assemblies from the Chassis N5245 00036 N5245 00037 0515 0372 5087 7403 0515 1227 All Assemblies are Shown but Only Remove the Defective Assembly ...

Page 526: ...Replacement Procedures Removing and Replacing the A71 A74 Bias Tee Combiners 7 Figure 7 44 Remove DC Bias Cable from Bias Combiner N5240 60091 Figure 7 45 Remove Bias Combiner Cables and Clamps 5023 3299 5087 7403 0515 2141 and N5240 60097 x2 60097 ...

Page 527: ...Keysight N5247B Service Guide 7 83 Repair and Replacement Procedures Removing and Replacing the A71 A74 Bias Tee Combiners Figure 7 46 Mark Bias Combiner With a Permanent Marker ...

Page 528: ...sembly 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 If installed remove all jumper cables item from the rear panel 6 Remove the 50 ohm load s item 7 If installed remove the cap item 8 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...

Page 529: ...Keysight N5247B Service Guide 7 85 Repair and Replacement Procedures Removing and Replacing the Rear Panel Figure 7 47 Rear Panel Removal ...

Page 530: ...st port couplers Refer to Removing and Replacing the A33 A36 Test Port Couplers on page 7 46 3 Remove two screws from the LED board to be removed and remove the LED board from the analyzer For the location of the screws see Figure 6 71 on page 6 199 Replacement Procedure 1 Reverse the order of the removal procedure 2 Perform the post repair adjustments verifications and performance tests that pert...

Page 531: ...Keysight N5247B Service Guide 7 87 Repair and Replacement Procedures Removing and Replacing the Front Panel LED Boards This page intentionally left blank ...

Page 532: ...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 the...

Page 533: ...Repair and Replacement Procedures Removing and Replacing the Fans 2 Perform the post repair adjustments verifications and performance tests that pertain to this removal procedure Refer to Table 7 2 on page 7 92 Figure 7 48 B1 Fan Removal ...

Page 534: ...page 7 60 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 12 for additional information on battery disp...

Page 535: ...Keysight N5247B Service Guide 7 91 Repair and Replacement Procedures Removing and Replacing the Lithium Battery Figure 7 49 Lithium Battery Removal ...

Page 536: ...not present an electric shock hazard IMPORTANT Before you begin any testing on a System or instrument always inspect the connectors on the instrument the calibration kit cables and adapters IMPORTANT For the most current information on the Table 7 2 Verification Performance and Other Tests and Procedures column s content refer to https cal software keysight com PNA Help N7840AWebHelp htm Keysight ...

Page 537: ...93900 1 2 4 5 7A B Installed Frequency Accuracy Test Source Power Accuracy Test Source Maximum Power Output Test Source Power Linearity Test The Operator s Check A7 A8 40 GHz doubler board Source Adjustment IF Gain Adjustment Receiver Characterization Receiver Adjustment IF Response Adjustment Available Only with Option S93093 4A B and or S93900 1 2 4 5 7A B Installed Frequency Accuracy Test Sourc...

Page 538: ... Adjustment Receiver Characterization Receiver Adjustment IF Response Adjustment Available Only with Option S93093 4A B and or S93900 1 2 4 5 7A B Installed Frequency Accuracy Test Source Power Accuracy Test Source Maximum Power Output Test Source Power Linearity Test The Operator s Check A14 frequency reference board 6021 serial number prefixes 10 MHz Frequency Reference AdjustmentEE Default Adju...

Page 539: ...es and Folders to be shown and navigate to the E Log folder Select all items and sub folders right click and select Send To Compressed Zipped Folder Email this zipped folder to csg servicedesk keysigh t com with a note that it should be forwarded to PNA Customer Support EE Default Adjustment Synth LO only Synthesizer Bandwidth Adjustmenta Source Adjustment IF Gain Adjustment Receiver Characterizat...

Page 540: ...djustment needed Front Panel Keypad and RPG Test and A3 Display Test in Chapter 4 The 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 Changi...

Page 541: ...5 7A B Installed Frequency Accuracy Test Source Power Accuracy Test Source Maximum Power Output Test Source Power Linearity Test The Operator s Check A27 and A28 mixer bricks Source Adjustment IF Gain Adjustment Receiver Characterization Receiver Adjustment IF Response Adjustment Available Only with Option S93093 4A B and or S93900 1 2 4 5 7A B Installed Receiver Compression Test Noise Floor TestC...

Page 542: ...e Power Accuracy Test A37 reference mixer switch No adjustment needed The Operator s Check A38 A41 source step attenuators Source Adjustment IF Gain Adjustment Receiver Characterization Receiver Adjustment IF Response Adjustment Available Only with Option S93093 4A B and or S93900 1 2 4 5 7A B Installed Source Maximum Power Output Test Calibration Coefficients Test Source Power Accuracy Test Reset...

Page 543: ...justment IF Gain Adjustment Receiver Characterization Receiver Adjustment IF Response Adjustment Available Only with Option S93093 4A B and or S93900 1 2 4 5 7A B Installed Source Maximum Power Output Test Calibration Coefficients Test Source Power Accuracy Test A55 solid state drive Restore previously saved receiver calibration datac perform Receiver Adjustment Read and write to the drive A56 por...

Page 544: ...alled on page 3 62 Receiver Noise Figure Test Noise Jitter Test Noise Receiver Linearity Test Noise Receiver Compression Test Receiver Noise Figure Test Noise State Calibration Coefficients The Operator s Check A64 tuner No adjustment needed Receiver Noise Figure Test A70 A75 LFE board Source Adjustment Receiver Characterization Receiver Adjustment IF Response Adjustment Available Only with Option...

Page 545: ...tery No adjustment needed None a Synthesizer Bandwidth Adjustment is only required when the EE Default Adjustment is not sufficient b The A26 splitter 5067 4086 and N5247 20111 N5245 20022 N5245 20023 N5247 20110 and N5247 20146 cables are only used with a legacy HMA26 5 p n 5087 7765 The N5240 20125 N5247 20184 and N5247 20185 cables are used only with the new N5240 60101 HMA 26 5 If you are uncl...

Page 546: ... Backup The analyzer uses arrays of correction constants to enable the analyzer to produce accurate leveled source signals and receive clean test signals These constants are stored in non volatile EEPROM memory and in flash memory files The adjustments listed here generate new correction constants The analyzer must have a backup of this new data in case any of the data becomes corrupted To store t...

Page 547: ...les x86 Keysight Network Analyzer Service eebackup exe Windows 10 C Program Files Keysight Network Analyzer Service eebackup exe Run the program Click Backup EEPROM Click Backup TSMB Mem Click Backup Synth Mem Applies to Version 7 Synthesizers Only Click Exit when the program has finished Figure 8 EEPROM Backup Menu ...

Page 548: ...7 104 Keysight N5247B Service Guide Repair and Replacement Procedures Post Repair Procedures 7 ...

Page 549: ... 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 14 Operating System Recovery Where to find the information on recovering from a damaged operating system page 8 15 Correction Constants How to store correction constants after making adjustments to your...

Page 550: ...eview the Principles of Connector Care on page 3 5 or to the calibration kit s user s and service guide Preventive Maintenance If you print or plot the error terms at set intervals weekly monthly and so forth you can compare current error terms to these records A stable system should generate repeatable error terms over long intervals for example six months Look for the following A long term trend...

Page 551: ...resentation 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 imp...

Page 552: ...ms are the same for a one port measurement on Port 2 S22 Figure 8 2 Flowgraph of Two Port Error Terms where E error term 1st Subscript D Directivity S Source Match R Reflection Tracking X Crosstalk Isolation L Load Match T Transmission Tracking 2nd Subscript F forward measurement Ports 1 to Port 2 R reverse measurement Ports 2 to Port 1 ...

Page 553: ...ard Source Match and Reverse Load Match TRK Forward Reflection Tracking and Reverse Transmission Tracking For the case of a full 3 port calibration port 1 has three Match error terms S11 source match S12 load match S13 load match and three Tracking error terms S11 reflection tracking S12 transmission tracking S13 transmission tracking There are six isolation terms not shown ...

Page 554: ...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 acc...

Page 555: ... 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 an...

Page 556: ...ror 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 GHz...

Page 557: ... 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 refl...

Page 558: ...ed 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 iso...

Page 559: ...tware Entitlement Certificate If you have received an Software Entitlement Certificate follow the instructions on the certificate under HOW TO USE THIS CERTIFICATE to obtain license key file s for the option s listed on the certificate See the important note below When upgrading from one model number to another a new software entitlement certificate will be issued When the new certificate is redee...

Page 560: ... To enable or remove an option 1 Start the Keysight Software Manager Refer to Accessing the Keysight License Manager on page 8 11 2 In the Keysight License Manager window that opens in the left hand column press local host Local Licenses A list of available options similar to the list below will appear Refer to Figure 8 5 on page 8 11 S93015A B Dynamic uncertainty for S parameters S93025A B Basic ...

Page 561: ...on data refer to Keysight License Manager help on your instrument Installing or Changing a Serial Number It is necessary to reinstall the instrument serial number if the test set midplane board is replaced To change an incorrect serial number it is necessary for your instrument to be connected directly to the LAN and to a Keysight IP network Refer to Contacting Keysight on page 2 7 ...

Page 562: ...nalyzer is connected to the Internet there are two methods available for checking the availability of and downloading new firmware Download directly from https www keysight com us en support N5247B pna x microwave net work analyzer 900 hz 10 mhz 67 ghz html Select your analyzer s model number in this web site to view available upgrades Press UTILITY then then AgileUpdate compares the firmware revi...

Page 563: ...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 mktwww srs is keysight com field service network pna The URL for the Hard Drive Recovery page is http na support keysight com pna hdrecovery html ...

Page 564: ...urce signals and receive clean test signals Storing Correction Constants After performing any adjustment listed on page 3 54 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 x86 Keysight Network Analyzer Service eebackup exe Run the program Click Backup EEPROM ...

Page 565: ...Installation Note Xxxxx xxxxx 3 ...

Page 566: ...This information is subject to change without notice Keysight Technologies 2011 2022 Edition 1 January 2022 N5247 90026 www keysight com ...

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