Agilent Technologies N5242A Service Manual

2-port and 4-port pna microwave network analyzers (10 mhz–26.5 ghz)
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Service Guide
N5242A
Agilent Technologies
2-Port and 4-Port PNA
Microwave Network Analyzers
(10 MHz–26.5 GHz)
Part Number N5242-90001
Printed in USA
November 2007
Supersedes Print Date: March 2007
©
Agilent Technologies, Inc. 2007

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Summary of Contents for Agilent Technologies N5242A

  • Page 1 Service Guide N5242A Agilent Technologies 2-Port and 4-Port PNA Microwave Network Analyzers (10 MHz–26.5 GHz) Part Number N5242-90001 Printed in USA November 2007 Supersedes Print Date: March 2007 © Agilent Technologies, Inc. 2007...
  • Page 2 DFAR 252.227-7015 (b)(2) (November 1995), as applicable in any technical data. Certification Agilent Technologies, Inc. certifies that this product met its published specifications at the time of shipment from the factory. Agilent Technologies, Inc. further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology, to the extent allowed by the Institute's calibration facility, and to the calibration facilities of other International Standards Organization members.
  • Page 3: Service Guide N5242-90001

    Assistance Product maintenance agreements and other customer assistance agreements are available for Agilent Technologies, Inc. products. For information about these agreements and for other assistance, contact Agilent. Refer to “Contacting Agilent” on page 2-13. Safety and Regulatory Information The safety and regulatory information pertaining to this product is located in Chapter 1, “Safety and Regulatory Information.”...
  • Page 4 Documentation Map The online Help files are embedded in the analyzer, offering quick reference to programming and user documentation. From the Help drop-down menu, you can access the Help system in five different languages. Also, you can view the Analyzer Product Overview multimedia presentation and access the analyzer’s Web page.
  • Page 5: Table Of Contents

    Contents 1 Safety and Regulatory Information Information in This Chapter ...........1-2 Chapter One at-a-Glance .
  • Page 6 Contents Service and Support Options ..........2-13 Contacting Agilent .
  • Page 7 Microwave PNA, N5242A ........
  • Page 8 Contents A29–A32 Test Port Couplers ..........5-17 A34–A37 65-dB Source Step Attenuators and A38–A41 Bias Tees (Optional) .
  • Page 9 Contents Bottom RF Cables, 4-Port, Option 419 without Option 029 (Ports 3 and 4) ...6-52 Bottom RF Cables, 4-Port, Option 419 with Option 029 (Ports 3 and 4) ....6-54 Bottom Ribbon Cables and Wire Harnesses, 4-Port, Option 419 (including Option 029).6-56 Bottom Assemblies, 4-Port, Option 423 (including Option 029).
  • Page 10 Contents Removing and Replacing the Front Panel LED Boards ......7-58 Removing and Replacing the Fans ..........7-60 Removing and Replacing the Lithium Battery .
  • Page 11: Safety And Regulatory Information

    Safety and Regulatory Information Service Guide N5242-90001...
  • Page 12: Information In This Chapter

    Safety and Regulatory Information PNA Series Microwave Network Analyzers Information in This Chapter N5242A Information in This Chapter This chapter provides safety information that will help protect you and your network analyzer. It also contains information that is required by various government regulatory agencies.
  • Page 13: Safety Symbols

    PNA Series Microwave Network Analyzers Safety and Regulatory Information N5242A Safety Symbols Safety Symbols The following safety symbols are used throughout this manual. Familiarize yourself with each of the symbols and its meaning before operating this instrument. CAUTION Caution denotes a hazard. It calls attention to a procedure that, if not correctly performed or adhered to, could result in damage to or destruction of the instrument.
  • Page 14: Servicing

    Safety and Regulatory Information PNA Series Microwave Network Analyzers General Safety Considerations N5242A CAUTION This instrument has autoranging line voltage input. Be sure the supply voltage is within the specified range. WARNING Supply voltages which oscillate between the two normal input ranges of the autoranging line voltage input will damage the power supply.
  • Page 15 PNA Series Microwave Network Analyzers Safety and Regulatory Information N5242A General Safety Considerations CAUTION Do not operate the analyzer with the outer cover removed for more than 30 minutes, as this could cause the analyzer to overheat which could result in costly damage.
  • Page 16: Electrostatic Discharge Protection

    Safety and Regulatory Information PNA Series Microwave Network Analyzers Electrostatic Discharge Protection N5242A Electrostatic Discharge Protection Protection against electrostatic discharge (ESD) is essential while removing assemblies from or connecting cables to the network analyzer. Static electricity can build up on your body and can easily damage sensitive internal circuit elements when discharged.
  • Page 17: Regulatory Information

    PNA Series Microwave Network Analyzers Safety and Regulatory Information N5242A Regulatory Information Regulatory Information This section contains information that is required by various government regulatory agencies. Instrument Markings The instruction documentation symbol. The product is marked with this symbol when it is necessary for the user to refer to the instructions in the documentation.
  • Page 18: Lithium Battery Disposal

    If the battery on the A17 CPU board assembly needs to be disposed of, dispose of it in accordance with your country’s requirements. If required, you may return the battery to Agilent Technologies for disposal. Refer to “Contacting Agilent” on page 2-13 assistance.
  • Page 19: General Product Information

    General Product Information Service Guide N5242-90001...
  • Page 20: Information In This Chapter

    General Product Information PNA Series Microwave Network Analyzers Information in This Chapter N5242A Information in This Chapter Chapter Two at-a-Glance Section Title Summary of Content Start Page Cleaning instructions for the external surfaces of your analyzer. Maintenance Page 2-3 Information about electrical maintenance of your analyzer.
  • Page 21: Maintenance

    PNA Series Microwave Network Analyzers General Product Information N5242A Maintenance Maintenance Physical Maintenance WARNING 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 22: Option 020, Add If Inputs For Antenna And Millimeter-Wave

    General Product Information PNA Series Microwave Network Analyzers Analyzer Options Available N5242A Option 020, Add IF Inputs for Antenna and Millimeter-Wave This option can be added to any other option combination. This option enables external IF inputs on the rear panel of the analyzer for applications such as antenna and millimeter-wave test.
  • Page 23: Option 082, Scalar Calibrated Converter Measurements

    PNA Series Microwave Network Analyzers General Product Information N5242A Analyzer Options Available Option 082, Scalar Calibrated Converter Measurements This option can be added to any option combination that includes Option 080 but does not include Option 083. This option enables the additional firmware necessary to make scalar calibrated converter measurements by providing an intuitive and easy-to-use user interface for setting up mixer and converter measurements.
  • Page 24: Option 400, Standard 4-Port Configuration

    General Product Information PNA Series Microwave Network Analyzers Analyzer Options Available N5242A Option 400, Standard 4-Port Configuration This is a 4-port network analyzer with an upper frequency limit of 26.5 GHz. This is the standard 26.5 GHz 4-port analyzer and contains: •...
  • Page 25: Calibration Options

    PNA Series Microwave Network Analyzers General Product Information N5242A Analyzer Options Available Calibration Options Option UK6, Commercial Calibration Certificate with Test Data A complete set of measurements that test the analyzer to the manufacturer’s published specifications. It includes a calibration label, a calibration certificate, and the corresponding calibration data report.
  • Page 26: Analyzer Upgrades Available

    Analyzer Upgrades Available The options described in this chapter can be ordered as upgrades. The following table lists the Upgrades that are available for the N5242A analyzer. Refer to the previous section, “Analyzer Options Available” on page 2-3, for a complete description of each option included in the upgrades.
  • Page 27: Analyzer Accessories Available

    PNA Series Microwave Network Analyzers General Product Information N5242A Analyzer Accessories Available Analyzer Accessories Available CD-RW Drive–N4688A This accessory is an external read/write CD drive with a USB cable and can be ordered as model number N4688A. USB Hub–N4689A This accessory is a 4-port USB hub for connecting additional USB peripheral devices and can be ordered as model number N4689A.
  • Page 28: Required Service Test Equipment

    General Product Information PNA Series Microwave Network Analyzers Required Service Test Equipment N5242A Required Service Test Equipment Recommended Alternate Model or Part Model or Part Equipment Critical Specifications Number Number Test Instruments and Software Freq: 10 MHz to 10.5 GHz...
  • Page 29 PNA Series Microwave Network Analyzers General Product Information N5242A Required Service Test Equipment Required Service Test Equipment (Cont’d) Recommended Alternate Model Critical Specifications Model or Part Equipment or Part Number Number Calibration and Verification Kits 3.5 mm calibration kit Freq: 10 MHz to 26.5 GHz...
  • Page 30 General Product Information PNA Series Microwave Network Analyzers Required Service Test Equipment N5242A Required Service Test Equipment (Cont’d) Recommended Alternate Model or Part Model Equipment Critical Specifications Number Number Tools T-8 TORX driver 0.6 N-m (5 in-lb) setting 0.5, 0.8, and 1.0 N-m...
  • Page 31: Agilent Support, Services, And Assistance

    Agilent for repair. If you wish to send your network analyzer to Agilent Technologies for service or repair: • Include a complete description of the service requested or of the failure and a description of any failed test and any error message.
  • Page 32 General Product Information PNA Series Microwave Network Analyzers Agilent Support, Services, and Assistance N5242A 2-14 Service Guide N5242-90001...
  • Page 33: Tests And Adjustments

    Tests and Adjustments Service Guide N5242-90001...
  • Page 34: Information In This Chapter

    Tests and Adjustments PNA Series Microwave Network Analyzers Information in This Chapter N5242A Information in This Chapter This chapter contains procedures to help you check, verify, and adjust your PNA. • The checks verify the operation of the assemblies in your analyzer.
  • Page 35 PNA Series Microwave Network Analyzers Tests and Adjustments N5242A Information in This Chapter Section Title Summary of Content Start Page Performing the operator’s check. Checking your test cables. Preliminary Checks Page 3-10 Perform these checks before performing system verification. What the system verification does.
  • Page 36: Before You Begin

    Tests and Adjustments PNA Series Microwave Network Analyzers Before You Begin N5242A Before You Begin Before checking, verifying, or adjusting the analyzer, refer to the following paragraphs to: • make sure the operating environment is within its requirements • make sure that proper electrostatic discharge (ESD) protection is provided •...
  • Page 37: Review The Principles Of Connector Care

    PNA Series Microwave Network Analyzers Tests and Adjustments N5242A Before You Begin Review the Principles of Connector Care Proper connector care and connection techniques are critical for accurate and repeatable measurements. Refer to Table 3-1 for tips on connector care.
  • Page 38: About System Verification And Performance Tests

    Tests and Adjustments PNA Series Microwave Network Analyzers About System Verification and Performance Tests N5242A About System Verification and Performance Tests The performance of the network analyzer is specified in two ways: system specifications, and instrument specifications. It is the end user’s responsibility to determine which set of specifications is applicable to their use of the PNA.
  • Page 39: System Verification Procedure

    3-28. Certificate of Calibration Agilent Technologies will issue a certificate of calibration upon successful completion of system verification or completion of the performance tests. The certificate of calibration will apply to the “system” (analyzer, calibration kit, test cables, and any necessary adapters) if the system verification procedure is used to confirm the system specifications.
  • Page 40: Ansi/Ncsl Z540-1-1994 Verification

    Tests and Adjustments PNA Series Microwave Network Analyzers ANSI/NCSL Z540–1–1994 Verification N5242A ANSI/NCSL Z540–1–1994 Verification To meet the criteria for ANSI/NCSL Z540-1-1994, perform the preliminary checks and either system verification or performance tests without stopping to repair or adjust . Refer Figure 3-1 for test flow.
  • Page 41: Non-Ansi/Ncsl Z540-1-1994 Verification

    PNA Series Microwave Network Analyzers Tests and Adjustments N5242A Non-ANSI/NCSL Z540–1–1994 Verification Non-ANSI/NCSL Z540–1–1994 Verification For non-ANSI/NCSL Z540-1-1994, perform the preliminary checks and either the system verification or performance tests while stopping to troubleshoot. Refer to Figure 3-2 for test flow.
  • Page 42: Preliminary Checks

    Tests and Adjustments PNA Series Microwave Network Analyzers Preliminary Checks N5242A Preliminary Checks Preliminary checks include the following: • “The Operator’s Check” on page 3-10 The operator’s check tests the network analyzer’s basic functionality of the source, switch, and receivers.
  • Page 43 PNA Series Microwave Network Analyzers Tests and Adjustments N5242A Preliminary Checks 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.
  • Page 44: The Test Port Cable Checks

    Tests and Adjustments PNA Series Microwave Network Analyzers Preliminary Checks N5242A The Test Port Cable Checks A faulty test port cable can cause a failure in the verification test. The following checks are not required, but are recommended to verify the performance of the test port cable.
  • Page 45 PNA Series Microwave Network Analyzers Tests and Adjustments N5242A Preliminary Checks Cable Return Loss Check 1. Press UTILITY Preset 2. Perform a one-port calibration on Port 1, 1-Port Reflection. Refer to the embedded help in the analyzer if necessary. 3. Connect the test port cable to Port 1. Connect a broadband load to the other end of the cable.
  • Page 46 Tests and Adjustments PNA Series Microwave Network Analyzers Preliminary Checks N5242A Cable Insertion Loss Check 1. With the test port cable still connected to Port 1, connect a short to the other end of the cable. 2. Press MARKER/ANALYSIS , then .
  • Page 47 PNA Series Microwave Network Analyzers Tests and Adjustments N5242A Preliminary Checks Cable Magnitude and Phase Stability Check 1. With the test port cable still connected to Port 1, connect a short to the other end of the cable. 2. Press UTILITY Preset 3.
  • Page 48 Tests and Adjustments PNA Series Microwave Network Analyzers Preliminary Checks N5242A Figure 3-6 Typical Cable Magnitude and Phase Stability Response If the Cable Magnitude and Phase Stability Check Fails 1. Clean the cable and devices and torque to specification. Repeat the check.
  • Page 49 PNA Series Microwave Network Analyzers Tests and Adjustments N5242A Preliminary Checks Cable Connector Repeatability Check NOTE The connector repeatability measurement should be done at the test port as well as at the end of the test port cable. 1. With the test port cable still connected to Port 1, connect a broadband load to the other end of the cable.
  • Page 50 Tests and Adjustments PNA Series Microwave Network Analyzers Preliminary Checks N5242A 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 3-7 Typical Cable Connector Repeatability Response If the Cable Connector Repeatability Check Fails 1.
  • Page 51: System Verification

    PNA Series Microwave Network Analyzers Tests and Adjustments N5242A System Verification System Verification System verification is used to verify system-level, error-corrected uncertainty limits for network analyzer measurements. The verification procedure is automated and is contained in the firmware of the analyzer.
  • Page 52: Measurement Uncertainty

    Tests and Adjustments PNA Series Microwave Network Analyzers System Verification N5242A Measurement Uncertainty Measurement uncertainty is defined as the sum of: • the residual systematic (repeatable) errors, and • the random (non-repeatable) errors in the measurement system after calibration. The systematic errors are: •...
  • Page 53: Measurement Traceability

    PNA Series Microwave Network Analyzers Tests and Adjustments N5242A System Verification 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 accomplished by measuring the devices in an Agilent verification kit.
  • Page 54: Performing System Verification

    Tests and Adjustments PNA Series Microwave Network Analyzers System Verification N5242A Performing System Verification The following verification procedure is automated by the analyzer firmware. The process for the verification is: • connect cables to the analyzer test ports • perform a calibration or recall a recent calibration •...
  • Page 55 PNA Series Microwave Network Analyzers Tests and Adjustments N5242A System Verification Cable Substitution The test port cables specified for the network analyzer system have been characterized for connector repeatability, magnitude and phase stability with flexing, return loss, insertion loss, and aging rate. Since test port cable performance is a significant contributor to the system performance, cables of lower performance will increase the uncertainty of your measurement.
  • Page 56 Tests and Adjustments PNA Series Microwave Network Analyzers System Verification N5242A 4. In the Calibration Kit box, select the calibration kit or electronic calibration module (ECal) that is being used by clicking on it. The corresponding verification kit to use is selected for you and displayed in the Verification Kit box.
  • Page 57 PNA Series Microwave Network Analyzers Tests and Adjustments N5242A System Verification If the System Fails the Verification Test Inspect all connections. Do not remove the cable from the analyzer test port. IMPORTANT This will invalidate the calibration that you performed earlier.
  • Page 58 Tests and Adjustments PNA Series Microwave Network Analyzers System Verification N5242A Interpreting the Verification Results Figure 3-11 shows an example of typical verification results with Print Tabular Data selected in the Printer Output area of the System Verification dialog box.
  • Page 59 PNA Series Microwave Network Analyzers Tests and Adjustments N5242A System Verification Figure 3-12 shows an example of typical verification results with Print Graphs selected in the Printer Output area of the System Verification dialog box. The printed graphical results show the following: •...
  • Page 60: Performance Tests

    Performance Tests N5242A Performance Tests The performance tests verify the electrical performance of your N5242A microwave PNA. These performance tests are included in the analyzer’s firmware with Option 897 and Option 898. Your analyzer is automatically configured for each individual test.
  • Page 61: Source Maximum Power Output Test

    PNA Series Microwave Network Analyzers Tests and Adjustments N5242A Performance Tests Source Maximum Power Output Test Function of the Test: To confirm the maximum source output power of your network analyzer over its full frequency range. Specification Tested: Test Port Output–Maximum Leveled Power Equipment Used: A power meter, power sensors, and adapters.
  • Page 62: Frequency Accuracy Test

    Tests and Adjustments PNA Series Microwave Network Analyzers Performance Tests N5242A Frequency Accuracy Test Function of the Test: To verify the frequency accuracy and range of the analyzer’s source output. Specification Tested: Test Port Output–CW Accuracy Equipment Used: A frequency counter, a test cable, and adapters.
  • Page 63: Receiver Compression Test

    PNA Series Microwave Network Analyzers Tests and Adjustments N5242A Performance Tests Receiver Compression Test Function of the Test: To measure the compression at the analyzer’s specified maximum power level for the receivers. Specification Tested: Test Port Input–Maximum Test Port Input Level Equipment Used: The compression test set (Z5623A Option K01), a power meter, power sensors, two test cables, and a calibration kit.
  • Page 64: Noise Floor Test

    Tests and Adjustments PNA Series Microwave Network Analyzers Performance Tests N5242A Noise Floor Test Function of the Test: To measure the absolute power level of the noise floor for the analyzer’s receivers. Specification Tested: Test Port Input–Test Port Noise Floor Equipment Used: A power meter, power sensor, a calibration kit, and a test cable.
  • Page 65: Calibration Coefficients Test

    PNA Series Microwave Network Analyzers Tests and Adjustments N5242A Performance Tests Calibration Coefficients Test Function of the Test: To verify the uncorrected calibration coefficients of your analyzer. The calibration coefficients are measured in forward and reverse direction. Refer to Appendix 8, “General Purpose Maintenance Procedures”...
  • Page 66: Dynamic Accuracy Test

    Tests and Adjustments PNA Series Microwave Network Analyzers Performance Tests N5242A Dynamic Accuracy Test Function of the Test: To measure the relative power linearity of the analyzer’s receivers. Specification Tested: Test Port Input–Dynamic Accuracy Equipment Used: The dynamic accuracy test set (Z5623A Option H01), a power meter (E4418B or E4419B Option G12 or Option H12), power sensors, and two test cables.
  • Page 67: Adjustments

    PNA Series Microwave Network Analyzers Tests and Adjustments N5242A Adjustments Adjustments These adjustments are firmware-driven tests that are used to fine-tune your analyzer. If multiple adjustments are to be performed, perform them in the order listed. • “10 MHz Frequency Reference Adjustment” on page 3-36 •...
  • Page 68: 10 Mhz Frequency Reference Adjustment

    Tests and Adjustments PNA Series Microwave Network Analyzers Adjustments N5242A 10 MHz Frequency Reference Adjustment The 10 MHz frequency adjustment is used to adjust the frequency accuracy of the network analyzer’s 10 MHz frequency reference on the A10 frequency reference board assembly.
  • Page 69: If Gain Adjustment

    PNA Series Microwave Network Analyzers Tests and Adjustments N5242A Adjustments IF Gain Adjustment The IF gain adjustment is used to adjust the IF gain of the network analyzer. Procedure 1. Press UTILITY , then Service , then Adjustments , then click IF Gain System Adjustment.
  • Page 70: Source Adjustment

    Tests and Adjustments PNA Series Microwave Network Analyzers Adjustments N5242A Source Adjustment The source calibration is used to adjust your network analyzer for a flat source power across its full frequency range. There are differences between each test port; therefore, an adjustment is required for each port.
  • Page 71: Receiver Adjustment

    PNA Series Microwave Network Analyzers Tests and Adjustments N5242A Adjustments Receiver Adjustment The receiver calibration is used to adjust the network analyzer receivers for a flat response across its full frequency range: 1. A power meter/sensor is connected to Port 1, as shown in...
  • Page 72 Tests and Adjustments PNA Series Microwave Network Analyzers Adjustments N5242A Figure 3-15 Equipment Setup 1 for the Receiver Adjustment Service Adjustments 2. Press UTILITY , then , then , then click Receiver System Adjustment. 3. Ensure the GPIB settings are correct.
  • Page 73 PNA Series Microwave Network Analyzers Tests and Adjustments N5242A Adjustments Figure 3-17 Equipment Setup 3 for the Receiver Adjustment Service Guide N5242-90001 3-41...
  • Page 74: Receiver Characterization

    Tests and Adjustments PNA Series Microwave Network Analyzers Adjustments N5242A Receiver Characterization This characterizes the receivers in your analyzer. Procedure 1. Press UTILITY , then Service , then Adjustments , then click Receiver System Characterization. 2. Follow the instructions and prompts as they are displayed.
  • Page 75: Troubleshooting

    Troubleshooting Service Guide N5242-90001...
  • Page 76: Information In This Chapter

    Troubleshooting PNA Series Microwave Network Analyzers Information in This Chapter N5242A Information in This Chapter The information in this chapter helps you: • Identify the portion of the analyzer at fault. • Locate the specific troubleshooting procedure to identify the assembly or peripheral at fault.
  • Page 77: Conventions Used For Hardkeys, Softkeys, And Menu Items

    PNA Series Microwave Network Analyzers Troubleshooting N5242A Operating the Analyzer With Covers Removed Conventions Used for Hardkeys, Softkeys, and Menu Items The following conventions are used in this document: This represents a “hardkey”, a key that is physically located Hardkey on the instrument.
  • Page 78: Getting Started With Troubleshooting

    Check the Basics A problem can often be solved by repeating the procedure you were following when the problem occurred. Before calling Agilent Technologies or returning the instrument for service, please perform the following checks: 1. Is there power at the mains receptacle? If not, correct this situation and proceed.
  • Page 79: Troubleshooting Organization

    PNA Series Microwave Network Analyzers Troubleshooting N5242A Getting Started with Troubleshooting Troubleshooting Organization Follow the flowgraph in Figure 4-1 to help direct you to the correct section for troubleshooting the analyzer. Figure 4-1 Troubleshooting Organization Flowchart Go to “Power Up Troubleshooting”...
  • Page 80: Power Up Troubleshooting

    Troubleshooting PNA Series Microwave Network Analyzers Power Up Troubleshooting N5242A Power Up Troubleshooting Immediately unplug the instrument from the ac power line if the WARNING unit shows any of the following symptoms: • Smoke, arcing, or unusual noise from inside the analyzer.
  • Page 81: Power Supply Check

    PNA Series Microwave Network Analyzers Troubleshooting N5242A Power Up Troubleshooting Power Supply Check There are no fuses to replace within the power supply. If you determine that NOTE the power supply is the failed assembly, replace the power supply. A catastrophic failure in the power supply can be determined by observing the line switch and the power supply LED indicators: 1.
  • Page 82 Troubleshooting PNA Series Microwave Network Analyzers Power Up Troubleshooting N5242A Figure 4-2 A15 Midplane Board Power Supply LED Indicators and Measurement Points WARNING The instrument contains potentially hazardous voltages. Refer to the safety symbols provided on the instrument and in “General Safety...
  • Page 83 PNA Series Microwave Network Analyzers Troubleshooting N5242A Power Up Troubleshooting Table 4-1 Power Supply Measurement Points Expected Expected Test Point Supply Name Test Point Supply Name Level (Vdc) Level (Vdc) TP517 Analog Ground TP516 -5.2 V analog -5.2 ±0.1 TP509 +15 V analog +15.0 ±0.1...
  • Page 84 Troubleshooting PNA Series Microwave Network Analyzers Power Up Troubleshooting N5242A 5. Remove the A5 source board, if present (refer to “Removing and Replacing the A4–A13 Boards” on page 7-14). 6. Remove the A11 13.5 GHz synthesizer board (refer to “Removing and Replacing the A4–A13 Boards”...
  • Page 85 PNA Series Microwave Network Analyzers Troubleshooting N5242A Power Up Troubleshooting If the Fans Are Not Operating The power supply may be in thermal shutdown if the instrument has been CAUTION operating without the fans running. Allow the instrument to cool down before troubleshooting.
  • Page 86: Troubleshooting Lcd Display Problems

    Troubleshooting PNA Series Microwave Network Analyzers Power Up Troubleshooting N5242A 3. If the correct voltage is present at each connection and the fan connectors are in good mechanical condition, suspect a defective fan. Refer to “Removing and Replacing the Fans” on page 7-60.
  • Page 87: Front Panel Troubleshooting

    PNA Series Microwave Network Analyzers Troubleshooting N5242A Front Panel Troubleshooting Front Panel Troubleshooting The front panel assembly consists of the A1 front panel interface board, the keypad, the A2 USB board, and the A3 display assembly. The following tests verify the operation of the front panel assembly when the analyzer is in the measurement mode.
  • Page 88 Troubleshooting PNA Series Microwave Network Analyzers Front Panel Troubleshooting N5242A Checking the Front Panel Keys To check the front panel keys, push each key and compare the name in the Key Label box to the name physically labeled on the key cap. These names are also in Table 4-2 below.
  • Page 89: A3 Display Test

    PNA Series Microwave Network Analyzers Troubleshooting N5242A Front Panel Troubleshooting Checking the RPG (Front Panel Knob) To check the RPG knob: 1. Press the UTILITY key. Preset 2. Rotate the knob and check for a fluid movement of numbers on the analyzer display.
  • Page 90: Checking The A2 Usb Board

    Troubleshooting PNA Series Microwave Network Analyzers Front Panel Troubleshooting N5242A Checking the A2 USB Board To verify proper operation of the USB board: • Connect a known good USB device, such as a USB mouse, to a front panel USB port.
  • Page 91: Rear Panel Troubleshooting

    PNA Series Microwave Network Analyzers Troubleshooting N5242A Rear Panel Troubleshooting Rear Panel Troubleshooting Each rear panel connector is associated with a hardware group in the analyzer. You can use the data at these rear panel connectors to help troubleshoot these hardware groups in addition to testing the connectors.
  • Page 92: Lan Troubleshooting

    Troubleshooting PNA Series Microwave Network Analyzers Rear Panel Troubleshooting N5242A 5. On the menu, click then point to Windows Taskbar Start Programs, National Instruments and then click to open the window. NI-488.2, Explore GPIB Measurement & Automation 6. On the left side of the window under folders: Measurement &...
  • Page 93 PNA Series Microwave Network Analyzers Troubleshooting N5242A Rear Panel Troubleshooting Ping Command The analyzer has the built-in capability of performing a “ping” operation. Ping will request the analyzer to send a few bytes of information to a specific LAN device. That device will then signal the analyzer that it has received the information.
  • Page 94 Troubleshooting PNA Series Microwave Network Analyzers Rear Panel Troubleshooting N5242A C:>ping 141.121.69.162 Pinging 141.121.69.162 with 32 bytes of data: Reply from 141.121.69.162: bytes=32 time<10ms TTL=127 Reply from 141.121.69.162: bytes=32 time<10ms TTL=127 Reply from 141.121.69.162: bytes=32 time<10ms TTL=127 Reply from 141.121.69.162: bytes=32 time<10ms TTL=127 Ping statistics for 141.121.69.162:...
  • Page 95 PNA Series Microwave Network Analyzers Troubleshooting N5242A Rear Panel Troubleshooting 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.
  • Page 96 Troubleshooting PNA Series Microwave Network Analyzers Rear Panel Troubleshooting N5242A Table 4-3 LAN Pin Definitions and Wire Color Codes Pin Number Color Pin Number Color 1 (transmit +) White/orange White/blue 2 (transmit −) 6 (receive −) Orange Green 3 (receive +)
  • Page 97: Measurement System Troubleshooting

    , then , then Help About NA... Verify that the information displayed in this screen is correct for your analyzer. If any of the information is incorrect, contact Agilent Technologies. Refer to “Contacting Agilent” on page 2-13. Service Guide N5242-90001...
  • Page 98 Utilities , then View EEPROM Headers System If the information is incorrect for any of the pc boards, contact Agilent Technologies. Refer “Contacting Agilent” on page 2-13. Error Messages SOURCE UNLEVELED: The source ALC circuit on the A19 test set motherboard is running open-loop.
  • Page 99: Verifying The A, B, C, D, And R Traces (Standard S-Parameter Mode)

    PNA Series Microwave Network Analyzers Troubleshooting N5242A Measurement System Troubleshooting Verifying the A, B, C, D, and R Traces (Standard S-Parameter Mode) There is no way to view the frequency offset receiver response (Option 080). NOTE However, some standard S-parameter receiver trace information is helpful in troubleshooting the frequency offset section of the PNA.
  • Page 100 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting N5242A • For 4-port analyzer models, traces A, B, C, D, and R are displayed in five separate data windows as shown in Figure 4-7. Identifying discrepancies of the traces in these windows can help you to isolate the faulty assembly.
  • Page 101: Where To Begin Troubleshooting

    PNA Series Microwave Network Analyzers Troubleshooting N5242A Measurement System Troubleshooting Where to Begin Troubleshooting For the purposes of troubleshooting, the analyzer block diagram is divided into the following functional groups: • the source group — A10 frequency reference — A4 and A13 (optional on 2-port analyzers) 13.5 GHz source synthesizers —...
  • Page 102 Device Manager Network Adapters the resulting list. The following entry should be listed: Agilent Technologies DSP and should be enabled. Driver #2 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\spampnp.sys.
  • Page 103: Checking The Source Group

    PNA Series Microwave Network Analyzers Troubleshooting N5242A Measurement System Troubleshooting Checking the Source Group Source Group Tests Before checking the source group assemblies, you must open the analyzer. Use an antistatic work surface and wrist strap to reduce the chance of CAUTION electrostatic discharge for all of the procedures in this chapter.
  • Page 104 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting N5242A • If the power level is low or high on all test ports, the problem is LO signal related. Continue with “Checking the A10 50 MHz Reference Outputs”. • If the power level is low or high on only one of the test ports, the problem is either source group or in the signal separation group.
  • Page 105 PNA Series Microwave Network Analyzers Troubleshooting N5242A Measurement System Troubleshooting 4. Set the network analyzer for a 2 GHz CW frequency and observe the spectrum analyzer measurement. • The spectrum analyzer should measure a signal at 2 GHz (plus the 7.61 MHz offset).
  • Page 106 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting N5242A Checking the A5 and A8 Source Outputs 1. Refer to the block diagram at the end of this chapter and to “Top Cables, All Cables—All Options” on page 6-16. Locate the flexible cables W3 and W9 at the A5 source 1 board or cables W5 and W7 at the A8 source 2 board.
  • Page 107: Checking The Signal Separation Group

    PNA Series Microwave Network Analyzers Troubleshooting N5242A Measurement System Troubleshooting Checking the Signal Separation Group Before checking the signal separation group assemblies, you must open the analyzer. CAUTION Use an antistatic work surface and wrist strap to reduce the chance of electrostatic discharge for all of the procedures in this chapter.
  • Page 108 PNA Series Microwave Network Analyzers Measurement System Troubleshooting N5242A Checking Port 1, 2, 3, or 4 Power Outputs (A, B, C, or D Signals) The object of this check is to verify the power of the output signal across the entire frequency range.
  • Page 109 PNA Series Microwave Network Analyzers Troubleshooting N5242A Measurement System Troubleshooting • A34, A35, A36, or A37 source step attenuator • A38, A39, A40, or A41 bias tee • A29, A30, A31, or A32 test port coupler Equipment Used for These Tests...
  • Page 110 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting N5242A reconnect the cable to the bridge and continue testing at “Checking the A34, A35, A36, and A37 60-dB Source Step Attenuators” on page 4-36 7. If the 1 GHz signal is present and the analyzer does not have source attenuators and bias tees, replace the test port coupler.
  • Page 111: Checking The Receiver Group

    PNA Series Microwave Network Analyzers Troubleshooting N5242A Measurement System Troubleshooting Checking the Receiver Group Equipment Used for These Tests Model or Alternate Model Equipment Type Part Number or Part Number Spectrum analyzer 8565E 856xE a. Must be capable of measuring signals at 7.61 MHz and 1 GHz.
  • Page 112 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting N5242A WARNING 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.
  • Page 113 PNA Series Microwave Network Analyzers Troubleshooting N5242A Measurement System Troubleshooting A24 Mixer Bricks” on page 7-34. If the measured signal is missing on the A, B, C, or D channels and the analyzer has receiver attenuators, continue testing at “Checking the A42, A43, A44, and A45 35-dB Receiver Step Attenuators”...
  • Page 114 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting N5242A — Channel B; W60 — Channel C; W61 — Channel D; W62 — Channel R; W63 2. Disconnect the appropriate flexible RF cable from the output channel to be tested on the A20 IF multiplexer board.
  • Page 115: Instrument Block Diagrams Sheet 1

    PNA Series Microwave Network Analyzers Troubleshooting N5242A Instrument Block Diagrams Sheet 1 Instrument Block Diagrams Sheet 1 Microwave PNA, N5242A Insert: fold-out/fold-up; 23 x 35; n5242ablk_2port.pdf Service Guide N5242-90001 4-41...
  • Page 116 Troubleshooting PNA Series Microwave Network Analyzers Instrument Block Diagrams Sheet 1 N5242A 4-42 Service Guide N5242-90001...
  • Page 117: Instrument Block Diagrams Sheet 2

    PNA Series Microwave Network Analyzers Troubleshooting N5242A Instrument Block Diagrams Sheet 2 Instrument Block Diagrams Sheet 2 Microwave PNA, N5242A Insert: fold-out/fold-up; 23 x 35; n5242ablk_4port.pdf Service Guide N5242-90001 4-43...
  • Page 118 Troubleshooting PNA Series Microwave Network Analyzers Instrument Block Diagrams Sheet 2 N5242A 4-44 Service Guide N5242-90001...
  • Page 119: Theory Of Operation

    Theory of Operation Service Guide N5242-90001...
  • Page 120: Information In This Chapter

    Information in This Chapter N5242A Information in This Chapter This chapter provides a general description of the operating theory of the N5242A 2-port and 4-port PNA microwave network analyzers. • Theory of operation is explained to the assembly level only.
  • Page 121: Network Analyzer System Operation

    PNA Series Microwave Network Analyzers Theory of Operation N5242A Network Analyzer System Operation Network Analyzer System Operation The PNA network analyzer generates two (2-port models) or four (4-port models) phase-locked incident signals and an LO signal from the internal synthesized source. By means of signal separation, the incident signals are divided into reference signals and test signals.
  • Page 122: Functional Groups Of The Network Analyzer

    Theory of Operation PNA Series Microwave Network Analyzers Network Analyzer System Operation N5242A Figure 5-2 2-Port System Simplified Block Diagram Functional Groups of the Network Analyzer The operation of the network analyzer can be separated into major functional groups. Each group consists of assemblies that perform a distinct function in the instrument.
  • Page 123 PNA Series Microwave Network Analyzers Theory of Operation N5242A Network Analyzer System Operation Synthesized Source Group The built-in synthesized source generates a swept, stepped, or continuous wave (CW) signal in the frequency ranges as listed in Table 5-1. The source group provides five signals: an LO signal and four incident signals.
  • Page 124 Theory of Operation PNA Series Microwave Network Analyzers Network Analyzer System Operation N5242A Signal Separation Group Each of the incident signals from the source group is separated into a reference path and a test path. The reference signal is transmitted to the receiver group. The test signal is transmitted through—and reflected from—the DUT and is then transmitted to the...
  • Page 125: Synthesized Source Group Operation

    PNA Series Microwave Network Analyzers Theory of Operation N5242A Synthesized Source Group Operation Synthesized Source Group Operation The source group produces a stable output signal by phase locking a synthesized voltage-controlled oscillator (VCO). Refer to Table 5-2 on page 5-9 for the full frequency range of the source.
  • Page 126 Theory of Operation PNA Series Microwave Network Analyzers Synthesized Source Group Operation N5242A Figure 5-3 Source Group Service Guide N5242-90001...
  • Page 127 PNA Series Microwave Network Analyzers Theory of Operation N5242A Synthesized Source Group Operation Table 5-2 Subsweep Frequencies ➊ ➋ ➌ ➍ Mixer Brick L.O. A4/A13 A5/A8 Band Harmonic Synthesizer HMA26.5 Synthesizer Source Number Frequency (GHz) Frequency (GHz) Frequency (GHz) Frequency (GHz) 0.01254 to 0.01654...
  • Page 128: A4, A13, And A11 13.5 Ghz Synthesizer Boards

    Theory of Operation PNA Series Microwave Network Analyzers Synthesized Source Group Operation N5242A A4, A13, and A11 13.5 GHz Synthesizer Boards On 2-ports models, the A13 13.5 GHz synthesizer board is optional and included only with Option 224. The A4, A13, and A11 13.5 GHz synthesizer boards use the 50 MHz reference signal from the A10 frequency reference board to tune two VCO circuits: one that sweeps from 2 GHz to 4 GHz and one that is set to a fixed CW frequency of 3.4 GHz.
  • Page 129: A21 Multiplier/Amplifier 26.5 Board (Hma26.5)

    PNA Series Microwave Network Analyzers Theory of Operation N5242A Synthesized Source Group Operation with an external test set. This output is terminated with a 50-ohm load on the A8 26.5 GHz source. The companion signal, EXT TEST SET DRIVE LO, is output from the A23 mixer brick.
  • Page 130: A19 Test Set Motherboard

    Theory of Operation PNA Series Microwave Network Analyzers Synthesized Source Group Operation N5242A A19 Test Set Motherboard The A19 test set motherboard serves these functions: • to act as an interface between the A17 CPU board and the auxiliary rear panel interconnects.
  • Page 131 PNA Series Microwave Network Analyzers Theory of Operation N5242A Synthesized Source Group Operation Table 5-3 TEST SET I/O Connector Pin Assignments DB-25 Female Connector Pin Numbers Name Function SEL0 TTL out, test set select bit 0, tied to 0 V...
  • Page 132 Theory of Operation PNA Series Microwave Network Analyzers Synthesized Source Group Operation N5242A Table 5-4 HANDLER I/O Connector Pin Assignments Rectangular 36-Pin Female Connector Pin Numbers Name Function 0 V, ground reference TTL in, negative pulse (1 μs min) latches OUTPUT1-2 INPUT1 3–4...
  • Page 133 PNA Series Microwave Network Analyzers Theory of Operation N5242A Synthesized Source Group Operation Table 5-5 PWR I/O Connector Pin Assignments DB-9 Female Connector Name Description +15V +15 V @ 400 mA -15V -15 V @ 400 mA AnalogOut1 Analog Output Voltage Programmable ±10 V @ 100 mA out...
  • Page 134: Signal Separation Group Operation

    Theory of Operation PNA Series Microwave Network Analyzers Signal Separation Group Operation N5242A Signal Separation Group Operation The signal separation group divides the source incident signals into a reference path and a test path. Refer to Figure 5-4 on page 5-18 Figure 5-5 on page 5-19.
  • Page 135: A25-A28 Bridges

    PNA Series Microwave Network Analyzers Theory of Operation N5242A Signal Separation Group Operation Normal Measurement Configuration The Option 419 analyzer is equipped with configurable test set and source attenuators. With this configuration and inclusion of an external amplifier and accessories, you can calibrate the analyzer and test devices at power levels up to +30 dBm.
  • Page 136 Theory of Operation PNA Series Microwave Network Analyzers Signal Separation Group Operation N5242A Figure 5-4 4-Port Signal Separation Group 5-18 Service Guide N5242-90001...
  • Page 137 PNA Series Microwave Network Analyzers Theory of Operation N5242A Signal Separation Group Operation Figure 5-5 2-Port Signal Separation Group Service Guide N5242-90001 5-19...
  • Page 138: A34-A37 65-Db Source Step Attenuators And A38-A41 Bias Tees (Optional)

    Theory of Operation PNA Series Microwave Network Analyzers Signal Separation Group Operation N5242A A34–A37 65-dB Source Step Attenuators and A38–A41 Bias Tees (Optional) On 4-port models with Option 419 or 423, a step attenuator and a bias tee are placed in the signal path of each test port between the A25–A28 bridges and the A29–A32 test port...
  • Page 139: Receiver Group Operation

    PNA Series Microwave Network Analyzers Theory of Operation N5242A Receiver Group Operation Receiver Group Operation The receiver group measures and processes the input signals into digital information for processing and eventual display. Figure 5-6 on page 5-25 Figure 5-7 on page 5-26 simplified block diagrams of the receiver functional group for 2-port and 4-port analyzers respectively.
  • Page 140: A20 If Multiplexer Board

    Theory of Operation PNA Series Microwave Network Analyzers Receiver Group Operation N5242A The analog IF signal is sent to the A20 IF multiplexer board where it is processed and then sent to the A12 SPAM board. The A23 mixer brick sends the EXT TSET DRIVE LO OUT signal to a rear-panel connector for use with an external test set.
  • Page 141 PNA Series Microwave Network Analyzers Theory of Operation N5242A Receiver Group Operation Table 5-6 PULSE I/O Connector Pin Assignments DB-15 Female Connector Name Description IFGateAin IF pulse gate input A (TTL) IFGateBin IF pulse gate input B (TTL) IFGateCin IF pulse gate input C (TTL)
  • Page 142: A12 Spam Board (Analog Description)

    Theory of Operation PNA Series Microwave Network Analyzers Receiver Group Operation N5242A A12 SPAM Board (Analog Description) The A12 SPAM board contains digital and analog circuitry. For digital descriptions, refer “A12 SPAM Board (Digital Description)” on page 5-32. In this assembly, the IF signals (A, B, C, D, and R for 4-port models and A, B, R1, and R2...
  • Page 143 PNA Series Microwave Network Analyzers Theory of Operation N5242A Receiver Group Operation Figure 5-6 4-Port Receiver Group Service Guide N5242-90001 5-25...
  • Page 144 Theory of Operation PNA Series Microwave Network Analyzers Receiver Group Operation N5242A Figure 5-7 2-Port Receiver Group 5-26 Service Guide N5242-90001...
  • Page 145: Noise Measurement Group Operation (Option 029)

    PNA Series Microwave Network Analyzers Theory of Operation N5242A Noise Measurement Group Operation (Option 029) Noise Measurement Group Operation (Option 029) The noise measurement group does something. Figure 5-8 on page 5-28 is a simplified block diagram of the noise measurement group. Although the 4-port configuration is shown, the 2-port configuration is very similar.
  • Page 146 Theory of Operation PNA Series Microwave Network Analyzers Noise Measurement Group Operation (Option 029) N5242A Figure 5-8 Noise Measurement Group (Option 029) 5-28 Service Guide N5242-90001...
  • Page 147: Digital Processing And Digital Control Group Operation

    PNA Series Microwave Network Analyzers Theory of Operation N5242A Digital Processing and Digital Control Group Operation Digital Processing and Digital Control Group Operation The digital processor and control group provides digital control for the entire analyzer. It provides: • front panel operation, •...
  • Page 148 Theory of Operation PNA Series Microwave Network Analyzers Digital Processing and Digital Control Group Operation N5242A Figure 5-9 Digital Processing and Digital Control Group 5-30 Service Guide N5242-90001...
  • Page 149: Front Panel Subgroup

    PNA Series Microwave Network Analyzers Theory of Operation N5242A Digital Processing and Digital Control Group Operation Front Panel Subgroup The front panel subgroup contains the following assemblies: • A1 Front Panel Display Board • A2 USB Board • A3 Display Assembly •...
  • Page 150: Data Acquisition And Processing Subgroup

    Theory of Operation PNA Series Microwave Network Analyzers Digital Processing and Digital Control Group Operation N5242A Data Acquisition and Processing Subgroup The data acquisition and processing subgroup contain the following assemblies. See Figure 5-9 on page 5-30. • A12 SPAM Board (Digital Description) •...
  • Page 151 PNA Series Microwave Network Analyzers Theory of Operation N5242A Digital Processing and Digital Control Group Operation Rear Panel Interconnects The rear panel includes the following interfaces: USB x4 Four universal serial bus (USB) jacks (industry standard 4-pin connectors). GPIB (0) A 24-pin, female, type D-24 connector that meets IEEE-488 standards.
  • Page 152: Power Supply Group Operation

    Theory of Operation PNA Series Microwave Network Analyzers Power Supply Group Operation N5242A Power Supply Group Operation The A16 power supply assembly is a switching power supply operating at 103 kHz switching frequency. The input power ranges for the power supply are 90 to 132 Vac or 195 to 250 Vac.
  • Page 153: Replaceable Parts

    Replaceable Parts Service Guide N5242-90001...
  • Page 154: Information In This Chapter

    The definition of a rebuilt-exchange assembly. Rebuilt-Exchange Assemblies Page 6-4 The procedure for replacing and returning a defective assembly to Agilent Technologies. Tables that list the assemblies by reference designator with their associated part number and description. Illustrations that indicate the location of each of...
  • Page 155: Ordering Information

    To order a part listed in the replaceable parts lists: • include the part number • indicate the quantity required • Contact Agilent Technologies for instructions on where to send the order. Refer to “Contacting Agilent” on page 2-13. To order a part that is not listed in the replaceable parts lists: •...
  • Page 156: Rebuilt-Exchange Assemblies

    Replaceable Parts PNA Series Microwave Network Analyzers Rebuilt-Exchange Assemblies N5242A Rebuilt-Exchange Assemblies Under the rebuilt-exchange assembly program: • Certain factory-repaired 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.
  • Page 157: Replaceable Parts Listings

    PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Replaceable Parts Listings This section contains the replacement part numbers and their descriptions for your Agilent microwave PNA. You can find the locations of replaceable parts in this section: •...
  • Page 158 Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Table 6-1 Part Number Location by Reference Designator (Continued) Reference Designator Description Location Port 2 bridge Port 1 port coupler Port 3 port coupler “Bottom Assemblies, Standard 4-Port Configuration, Option 400” on page 6-40...
  • Page 159 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Table 6-2 Part Number Location by Type of Part Type of Part Location • “Front Panel Assembly, Front Side, All Options” on page 6-10 • “Front Panel Assembly, Back Side, All Options” on page 6-12 •...
  • Page 160 Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Table 6-2 Part Number Location by Type of Part (Continued) Type of Part Location • “Top Cables, All Cables—All Options” on page 6-16 • “Bottom RF Cables, Standard 2-Port Configuration, Option 200” on page 6-20 •...
  • Page 161 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Table 6-2 Part Number Location by Type of Part (Continued) Type of Part Location • “Top Hardware and Miscellaneous Parts, All Options” on page 6-70 • “Bottom Hardware and Miscellaneous Parts, All Options Except 029” on page 6-72 •...
  • Page 162: Front Panel Assembly, Front Side, All Options

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Front Panel Assembly, Front Side, All Options Reference Designator Part Number Description N5242-20001 Front frame assembly ➀ RFI gasket material, 1.2 meters in length 8160-0660 1.2 m (Must be ordered separately from front frame assembly.) ➁...
  • Page 163 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-2 Front Panel Assembly, Front Side, All Options Service Guide N5242-90001 6-11...
  • Page 164: Front Panel Assembly, Back Side, All Options

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Front Panel Assembly, Back Side, All Options Reference Designator Part Number Description N5240-60046 Front panel interface board (until 11-15-07) N5240-63053 Front panel interface board (after 11-15-07) N5240-60047 USB board ➀...
  • Page 165 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-3 Front Panel Assembly, Back Side, All Options Service Guide N5242-90001 6-13...
  • Page 166: Top Assemblies, All Options

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Top Assemblies, All Options Reference Designator Part Number Description N5230-60002 13.5 GHz (source 1) synthesizer board 5087-7307 26.5 GHz source (1) board Not used. N5242-60098 Noise receiver board (Included only with Option 029.) 26.5 GHz source (2) board (On 2-port models, this assembly is...
  • Page 167 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-4 Top Assemblies, All Options Service Guide N5242-90001 6-15...
  • Page 168: Top Cables, All Cables-All Options

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Top Cables, All Cables—All Options Reference Designator Type Part Number Description A4 13.5 GHz (source 1) synthesizer board J1207 N5242-20124 to A5 26.5 GHz source (1) board P1 A13 13.5 GHz (source 2) synthesizer board J1207 N5242-20109 to A8 26.5 GHz source (2) board P1...
  • Page 169 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-5 Top Cables, All Cables—All Options Service Guide N5242-90001 6-17...
  • Page 170: Bottom Assemblies, Standard 2-Port Configuration, Option 200

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom Assemblies, Standard 2-Port Configuration, Option 200 Reference Designator Part Number Description N5240-60043 Test set motherboard N5240-60045 IF multiplexer board 5087-7711 LO Multiplier/amplifier 26.5 (HMA26.5) 5087-7308 Mixer brick 5087-6308...
  • Page 171 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-6 Bottom Assemblies, Standard 2-Port Configuration, Option 200 Service Guide N5242-90001 6-19...
  • Page 172: Bottom Rf Cables, Standard 2-Port Configuration, Option 200

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom RF Cables, Standard 2-Port Configuration, Option 200 Reference Designator Type Part Number Description N5242-20091 A5 source (1) to W4 N5242-20050 W3 to A25 port 1 bridge N5242-20092 A5 source (1) to W10...
  • Page 173 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-7 Bottom RF Cables, Standard 2-Port Configuration, Option 200 Service Guide N5242-90001 6-21...
  • Page 174: Bottom Ribbon Cables And Wire Harnesses, Standard 2-Port Configuration, Option

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom Ribbon Cables and Wire Harnesses, Standard 2-Port Configuration, Option 200 Reference Designator Type Part Number Description ➀ N5242-60002 A19 test set motherboard J3 to A33 reference mixer switch ➁...
  • Page 175 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-8 Bottom Ribbon Cables and Wire Harnesses, Standard 2-Port Configuration, Option 200 Service Guide N5242-90001 6-23...
  • Page 176: Bottom Assemblies, 2-Port, Option 219 (Including Option 029)

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom Assemblies, 2-Port, Option 219 (including Option 029) Reference Designator Part Number Description N5240-60043 Test set motherboard N5240-60045 IF multiplexer board 5087-7711 LO Multiplier/amplifier 26.5 (HMA26.5) 5087-7139 Splitter (Option 029 only)
  • Page 177 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-9 Bottom Assemblies, 2-Port, Option 219 (including Option 029) Service Guide N5242-90001 6-25...
  • Page 178: Bottom Rf Cables, 2-Port, Option 219 Without Option 029

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom RF Cables, 2-Port, Option 219 without Option 029 Reference Designator Type Part Number Qty Description N5242-20091 A5 source (1) to W4 N5242-20050 W3 to A25 port 1 bridge...
  • Page 179 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-10 Bottom RF Cables, 2-Port, Option 219 without Option 029 Service Guide N5242-90001 6-27...
  • Page 180: Bottom Rf Cables, 2-Port, Option 219 With Option 029

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom RF Cables, 2-Port, Option 219 with Option 029 Reference Designator Type Part Number Qty Description N5242-20091 A5 source (1) to W4 N5242-20050 W3 to A25 port 1 bridge...
  • Page 181 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Reference Designator Type Part Number Qty Description W141 N5242-20129 A55 noise downconverter to A7 noise receiver board LO W142 N5242-20041 A55 noise downconverter J4 to A7 noise receiver board P2...
  • Page 182: Bottom Ribbon Cables And Wire Harnesses, 2-Port, Option 219 (Including Option 029)

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom Ribbon Cables and Wire Harnesses, 2-Port, Option 219 (including Option 029) Reference Designator Type Part Number Description ➀ N5242-60002 A19 test set motherboard J3 to A33 reference mixer switch ➁...
  • Page 183 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-12 Bottom Ribbon Cables and Wire Harnesses, 2-Port, Option 219 (including Option 029) Service Guide N5242-90001 6-31...
  • Page 184: Bottom Assemblies, 2-Port, Option 224 (Including Option 029)

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom Assemblies, 2-Port, Option 224 (including Option 029) Reference Designator Part Number Description N5240-60043 Test set motherboard N5240-60045 IF multiplexer board 5087-7711 LO Multiplier/amplifier 26.5 (HMA26.5) 5087-7139 Splitter (Option 029 only)
  • Page 185 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-13 Bottom Assemblies, 2-Port, Option 224 (including Option 029) Service Guide N5242-90001 6-33...
  • Page 186: Bottom Rf Cables, 2-Port, Option 224 Without Option 029

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom RF Cables, 2-Port, Option 224 without Option 029 Reference Designator Type Part Number Qty Description N5242-20091 A5 source (1) to W95 N5242-20091 A8 source (2) to W101 N5242-20092...
  • Page 187 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Reference Designator Type Part Number Qty Description W117 N5242-20114 A32 port 2 coupler to front-panel Port 2 CPLR ARM W119 N5242-20115 A38 port 1 bias tee to A29 port 1 coupler...
  • Page 188: Bottom Rf Cables, 2-Port, Option 224 With Option 029

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom RF Cables, 2-Port, Option 224 with Option 029 Reference Designator Type Part Number Qty Description N5242-20091 A5 source (1) to W95 N5242-20091 A8 source (2) to W101 N5242-20092...
  • Page 189 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Reference Designator Type Part Number Qty Description W138 N5242-20075 Front-panel REF 2 RCVR R2 IN to A23 mixer brick (R2) W139 N5242-20131 A22 splitter to A55 noise downconverter W141...
  • Page 190: Bottom Ribbon Cables And Wire Harnesses, 2-Port, Option 224 (Including Option 029)

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom Ribbon Cables and Wire Harnesses, 2-Port, Option 224 (including Option 029) Reference Designator Type Part Number Description A19 test set motherboard J102 to A47 SRC 2 OUT 1 source bypass ➀...
  • Page 191 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-16 Bottom Ribbon Cables and Wire Harnesses, 2-Port, Option 224 (including Option 029) Service Guide N5242-90001 6-39...
  • Page 192: Bottom Assemblies, Standard 4-Port Configuration, Option 400

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom Assemblies, Standard 4-Port Configuration, Option 400 Reference Designator Part Number Description N5240-60043 Test set motherboard N5240-60045 IF multiplexer board 5087-7711 LO Multiplier/amplifier 26.5 (HMA26.5) 5087-7139 Splitter 5087-6139 5087-7308...
  • Page 193 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-17 Bottom Assemblies, Standard 4-Port Configuration, Option 400 Service Guide N5242-90001 6-41...
  • Page 194: Bottom Rf Cables, Standard 4-Port Configuration, Option 400

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom RF Cables, Standard 4-Port Configuration, Option 400 Reference Designator Type Part Number Qty Description N5242-20091 A5 source (1) to W4 N5242-20050 W3 to A25 port 1 bridge N5242-20091...
  • Page 195 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Reference Designator Type Part Number Qty Description N5242-60015 A20 IF multiplexer (P603) to A12 SPAM (J5) N5242-60016 A20 IF multiplexer (P803) to A12 SPAM (J6) a. SR = semirigid coaxial cable; F = flexible coaxial cable...
  • Page 196: Bottom Ribbon Cables And Wire Harnesses, Standard 4-Port Configuration, Option

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom Ribbon Cables and Wire Harnesses, Standard 4-Port Configuration, Option 400 Reference Designator Type Part Number Description ➀ N5242-60002 A19 test set motherboard J3 to A33 reference mixer switch ➁...
  • Page 197 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-19 Bottom Ribbon Cables and Wire Harnesses, Standard 4-Port Configuration, Option 400 Service Guide N5242-90001 6-45...
  • Page 198: Bottom Assemblies, 4-Port, Option 419 (Including Option 029)

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom Assemblies, 4-Port, Option 419 (including Option 029) Reference Designator Part Number Description N5240-60043 Test set motherboard N5240-60045 IF multiplexer board 5087-7711 LO Multiplier/amplifier 26.5 HMA26.5) 5087-7139 Splitter 5087-6139...
  • Page 199 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-20 Bottom Assemblies, 4-Port, Option 419 (including Option 029) Service Guide N5242-90001 6-47...
  • Page 200: Bottom Rf Cables, 4-Port, Option 419 Without Option 029 (Ports 1 And 2)

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom RF Cables, 4-Port, Option 419 without Option 029 (Ports 1 and 2) Reference Designator Type Part Number Qty Description N5242-20091 A5 source (1) to W4 N5242-20050 W3 to A25 port 1 bridge...
  • Page 201 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-21 Bottom RF Cables, 4-Port, Option 419 without Option 029 (Ports 1 and 2) Service Guide N5242-90001 6-49...
  • Page 202: Bottom Rf Cables, 4-Port, Option 419 With Option 029 (Ports 1 And 2)

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom RF Cables, 4-Port, Option 419 with Option 029 (Ports 1 and 2) Reference Designator Type Part Number Qty Description N5242-20091 A5 source (1) to W4 N5242-20050 W3 to A25 port 1 bridge...
  • Page 203 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Reference Designator Type Part Number Qty Description W142 N5242-20041 A55 noise downconverter J4 to A7 noise receiver board P2 W143 N5242-20130 A55 noise downconverter to A7 noise receiver board RF a.
  • Page 204: Bottom Rf Cables, 4-Port, Option 419 Without Option 029 (Ports 3 And 4)

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom RF Cables, 4-Port, Option 419 without Option 029 (Ports 3 and 4) Reference Designator Type Part Number Qty Description N5242-20091 A8 source (2) to W6 N5242-20051 W5 to A26 port 3 bridge...
  • Page 205 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-23 Bottom RF Cables, 4-Port, Option 419 without Option 029 (Ports 3 and 4) Service Guide N5242-90001 6-53...
  • Page 206: Bottom Rf Cables, 4-Port, Option 419 With Option 029 (Ports 3 And 4)

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom RF Cables, 4-Port, Option 419 with Option 029 (Ports 3 and 4) Reference Designator Type Part Number Qty Description N5242-20091 A8 source (2) to W6 N5242-20051 W5 to A26 port 3 bridge...
  • Page 207 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-24 Bottom RF Cables, 4-Port, Option 419 with Option 029 (Ports 3 and 4) Service Guide N5242-90001 6-55...
  • Page 208: Bottom Ribbon Cables And Wire Harnesses, 4-Port, Option 419 (Including Option 029)

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom Ribbon Cables and Wire Harnesses, 4-Port, Option 419 (including Option 029) Reference Designator Type Part Number Description ➀ N5242-60002 A19 test set motherboard J3 to A33 reference mixer switch ➁...
  • Page 209 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-25 Bottom Ribbon Cables and Wire Harnesses, 4-Port, Option 419 (including Option 029) Service Guide N5242-90001 6-57...
  • Page 210: Bottom Assemblies, 4-Port, Option 423 (Including Option 029)

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom Assemblies, 4-Port, Option 423 (including Option 029) Reference Designator Part Number Description N5240-60043 Test set motherboard N5240-60045 IF multiplexer board 5087-7711 LO Multiplier/amplifier 26.5 (HMA26.5) 5087-7139 Splitter 5087-6139...
  • Page 211 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-26 Bottom Assemblies, 4-Port, Option 423 (including Option 029) Service Guide N5242-90001 6-59...
  • Page 212: Bottom Rf Cables, 4-Port, Option 423 Without Option 029 (Ports 1 And 2)

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom RF Cables, 4-Port, Option 423 without Option 029 (Ports 1 and 2) Reference Designator Type Part Number Qty Description N5242-20091 A5 source (1) to W95 N5242-20092 A5 source (1) to W109...
  • Page 213 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-27 Bottom RF Cables, 4-Port, Option 423 without Option 029 (Ports 1 and 2) Service Guide N5242-90001 6-61...
  • Page 214: Bottom Rf Cables, 4-Port, Option 423 With Option 029 (Ports 1 And 2)

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom RF Cables, 4-Port, Option 423 with Option 029 (Ports 1 and 2) Reference Designator Type Part Number Qty Description N5242-20091 A5 source (1) to W95 N5242-20092 A5 source (1) to W109...
  • Page 215 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Reference Designator Type Part Number Qty Description W141 N5242-20129 A55 noise downconverter to A7 noise receiver board LO W142 N5242-20041 A55 noise downconverter J4 to A7 noise receiver board P2...
  • Page 216: Bottom Rf Cables, 4-Port, Option 423 Without Option 029 (Ports 3 And 4)

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom RF Cables, 4-Port, Option 423 without Option 029 (Ports 3 and 4) Reference Designator Type Part Number Qty Description N5242-20091 A8source (2) to W101 N5242-20092 A8 source (2) to W105...
  • Page 217 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-29 Bottom RF Cables, 4-Port, Option 423 without Option 029 (Ports 3 and 4) Service Guide N5242-90001 6-65...
  • Page 218: Bottom Rf Cables, 4-Port, Option 423 With Option 029 (Ports 3 And 4)

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom RF Cables, 4-Port, Option 423 with Option 029 (Ports 3 and 4) Reference Designator Type Part Number Qty Description N5242-20091 A8source (2) to W101 N5242-20092 A8 source (2) to W105...
  • Page 219 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-30 Bottom RF Cables, 4-Port, Option 423 with Option 029 (Ports 3 and 4) Service Guide N5242-90001 6-67...
  • Page 220: Bottom Ribbon Cables And Wire Harnesses, 4-Port, Option 423 (Including Option 029)

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom Ribbon Cables and Wire Harnesses, 4-Port, Option 423 (including Option 029) Reference Designator Type Part Number Description ➀ N5242-60003 A19 test set motherboard J102 to A47 port 3 source bypass switch ➁...
  • Page 221 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-31 Bottom Ribbon Cables and Wire Harnesses, 4-Port, Option 423 (including Option 029) Service Guide N5242-90001 6-69...
  • Page 222: Top Hardware And Miscellaneous Parts, All Options

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Top Hardware and Miscellaneous Parts, All Options Reference Designator Part Number Description 3160-4199 ➀ 3160-4198 Fan guard ➁ 0361-1272 Fan rivet ➂ N5242-00015 Fan bracket Machine screw, M3.0 x 8, pan head (5 to attach fan bracket to chassis, 4 to ➃...
  • Page 223 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-33 Top Hardware and Miscellaneous Parts, Top View, All Options Service Guide N5242-90001 6-71...
  • Page 224: Bottom Hardware And Miscellaneous Parts, All Options Except 029

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom Hardware and Miscellaneous Parts, All Options Except 029 Reference Part Qty Description Designator Number Machine screw, M3.0 x 8, pan head (4 to attach A19 test set motherboard to...
  • Page 225 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-34 Bottom Hardware and Miscellaneous Parts, All Options Except 029 Service Guide N5242-90001 6-73...
  • Page 226: Bottom Hardware And Miscellaneous Parts, Option 029

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Bottom Hardware and Miscellaneous Parts, Option 029 Reference Part Qty Description Designator Number Bracket (For A34 port 1 and A37 port 2 source attenuators, A42 port 1 and ➀...
  • Page 227 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-35 Bottom Hardware and Miscellaneous Parts, Option 029 Service Guide N5242-90001 6-75...
  • Page 228: Internal Hardware And Miscellaneous Parts, All Options

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Internal Hardware and Miscellaneous Parts, All Options Reference Part Number Description Designator ➀ W1312-00051 Left side inner bracket ➁ W1312-00048 Midplane bracket ➂ W1312-00050 Right side inner bracket ➃...
  • Page 229 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-36 Internal Hardware and Miscellaneous Parts, All Options Service Guide N5242-90001 6-77...
  • Page 230: External Hardware And Miscellaneous Parts, All Options

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A External Hardware and Miscellaneous Parts, All Options Reference Designator Part Number Description ➀ N5242-00014 Outer cover ➁ 5041-9611 Rear foot ➂ 0515-1619 Machine screw M4.0 x 25, pan head (To attach rear foot.) ➄...
  • Page 231 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-37 External Hardware and Miscellaneous Parts, All Options Service Guide N5242-90001 6-79...
  • Page 232: Rear Panel Assembly, All Options

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Rear Panel Assembly, All Options Item Part Number Number Description ➀ N5242-00022 Power supply rear panel ➁ 0515-0372 Machine screw, M3.0 x 8, pan head Rear foot and screw (Refer to “External Hardware and Miscellaneous Parts, All Options”...
  • Page 233 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Figure 6-38 Rear Panel Assembly, All Options Service Guide N5242-90001 6-81...
  • Page 234: Miscellaneous Part Numbers

    Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A Miscellaneous Part Numbers Table 6-3 Part Numbers for Miscellaneous Parts and Accessories Model or Part Description Number Service Tools 1/4 inch and 5/16 inch open-end wrench, thin profile 8710-0510 5/16 inch (8 mm), open-end torque wrench;...
  • Page 235 PNA Series Microwave Network Analyzers Replaceable Parts N5242A Replaceable Parts Listings Table 6-3 Part Numbers for Miscellaneous Parts and Accessories (Continued) Model or Part Description Number Upgrade Kits orderable by Model Number Time Domain (Option 010) N5242AU-010 Frequency Offset Measurements (Option 080)
  • Page 236 Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings N5242A 6-84 Service Guide N5242-90001...
  • Page 237: Repair And Replacement Procedures

    Repair and Replacement Procedures Service Guide N5242-90001...
  • Page 238: Information In This Chapter

    PNA Series Microwave Network Analyzers Information in This Chapter N5242A Information in This Chapter This chapter contains procedures for removing and replacing the major assemblies of your Agilent Technologies PNA series microwave network analyzer. Chapter Seven at-a-Glance Section Title Summary of Content Start Page...
  • Page 239: Personal Safety Warnings

    PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Personal Safety Warnings Personal Safety Warnings WARNING These servicing instructions are for use by qualified personnel only. To avoid electrical shock, do not perform any servicing unless you are qualified to do so.
  • Page 240: Removal And Replacement Procedures

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removal and Replacement Procedures N5242A Removal and Replacement Procedures Table 7-1 List of Procedures Reference Designator Assembly Description Location Covers, outer and inner Page 7-6 Fan bracket and fans Page 7-60...
  • Page 241 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removal and Replacement Procedures Table 7-1 List of Procedures (Continued) Reference Designator Assembly Description Location Port 1 test port coupler Port 3 test port coupler Page 7-38 Port 4 test port coupler...
  • Page 242: Removing The Covers

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing the Covers N5242A Removing the Covers Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) Removing the Outer Cover This procedure is best performed with the analyzer resting on its front CAUTION handles in the vertical position.
  • Page 243 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing the Covers Figure 7-1 Outer and Inner Cover Removal Service Guide N5242-90001...
  • Page 244: Removing And Replacing The Front Panel Assembly

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the Front Panel Assembly N5242A Removing and Replacing the Front Panel Assembly Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
  • Page 245 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the Front Panel Assembly Figure 7-2 Front Panel Assembly Removal Service Guide N5242-90001...
  • Page 246: Removing And Replacing The A1-A3 And Other Front Panel Subassemblies

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A1–A3 and Other Front Panel Subassemblies N5242A Removing and Replacing the A1–A3 and Other Front Panel Subassemblies Tools Required • T-10 TORX driver (set to 9 in-lb) •...
  • Page 247 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A1–A3 and Other Front Panel Subassemblies Removing the USB Controller Board ④ 1. Disconnect the USB controller board cable (item ) from the USB controller board.
  • Page 248 Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A1–A3 and Other Front Panel Subassemblies N5242A Removing the A3 Display Assembly and the Touchscreen 1. Disconnect the following cables from the A1 front panel interface board: display cable ①...
  • Page 249 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A1–A3 and Other Front Panel Subassemblies ⑥ ⑦ 4. The display cable (item ) can be removed by removing the three screws (item ) that ⑧...
  • Page 250: Removing And Replacing The A4-A13 Boards

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A4–A13 Boards N5242A Removing and Replacing the A4–A13 Boards Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
  • Page 251 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A4–A13 Boards Figure 7-6 A4, A5, A7, A8, A10, A11, A12, and A13 Boards Removal Service Guide N5242-90001 7-15...
  • Page 252: Removing And Replacing The A14 System Motherboard

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A14 System Motherboard N5242A Removing and Replacing the A14 System Motherboard Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
  • Page 253 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A14 System Motherboard Figure 7-7 A14 System Motherboard Removal Service Guide N5242-90001 7-17...
  • Page 254: Removing And Replacing The A15 Midplane Board

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A15 Midplane Board N5242A Removing and Replacing the A15 Midplane Board Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
  • Page 255 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A15 Midplane Board Figure 7-8 A15 Midplane Board Removal Service Guide N5242-90001 7-19...
  • Page 256: Removing And Replacing The A16 Power Supply Assembly

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A16 Power Supply Assembly N5242A Removing and Replacing the A16 Power Supply Assembly Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
  • Page 257 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A16 Power Supply Assembly Figure 7-9 A16 Power Supply Assembly Removal Service Guide N5242-90001 7-21...
  • Page 258: Removing And Replacing The A17 Cpu Board Assembly

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A17 CPU Board Assembly N5242A Removing and Replacing the A17 CPU Board Assembly Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
  • Page 259 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A17 CPU Board Assembly Figure 7-10 A17 CPU Board Assembly Removal Service Guide N5242-90001 7-23...
  • Page 260: Removing And Replacing The A18 Gpib Board

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A18 GPIB Board N5242A Removing and Replacing the A18 GPIB Board Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
  • Page 261 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A18 GPIB Board Figure 7-11 A18 GPIB Board Removal Service Guide N5242-90001 7-25...
  • Page 262: Removing And Replacing The A19 Test Set Motherboard

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A19 Test Set Motherboard N5242A Removing and Replacing the A19 Test Set Motherboard Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
  • Page 263 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A19 Test Set Motherboard Figure 7-12 A19 Test Set Motherboard Removal Service Guide N5242-90001 7-27...
  • Page 264: Removing And Replacing The A20 If Multiplexer Board

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A20 IF Multiplexer Board N5242A Removing and Replacing the A20 IF Multiplexer Board Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
  • Page 265 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A20 IF Multiplexer Board Figure 7-13 A20 IF Multiplexer Board Removal Service Guide N5242-90001 7-29...
  • Page 266: Removing And Replacing The A21 Hma26.5

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A21 HMA26.5 N5242A Removing and Replacing the A21 HMA26.5 Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
  • Page 267 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A21 HMA26.5 Figure 7-14 A21 HMA26.5 Removal Service Guide N5242-90001 7-31...
  • Page 268: Removing And Replacing The A22 Splitter

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A22 Splitter N5242A Removing and Replacing the A22 Splitter Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
  • Page 269 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A22 Splitter Figure 7-15 A22 Splitter Removal Service Guide N5242-90001 7-33...
  • Page 270: Removing And Replacing The A23 And A24 Mixer Bricks

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A23 and A24 Mixer Bricks N5242A Removing and Replacing the A23 and A24 Mixer Bricks Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
  • Page 271 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A23 and A24 Mixer Bricks Replacement Procedure 1. Reverse the order of the removal procedure. If replacing the A24 mixer brick, remember to install the short circuit termination ⑤...
  • Page 272: Removing And Replacing The A25-A28 Bridges And Bridge Mounting Brackets

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A25–A28 Bridges and Bridge Mounting Brackets N5242A Removing and Replacing the A25–A28 Bridges and Bridge Mounting Brackets Tools Required • T-10 TORX driver (set to 9 in-lb) •...
  • Page 273 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A25–A28 Bridges and Bridge Mounting Brackets Figure 7-17 A25 through A28 Bridges Removal Service Guide N5242-90001 7-37...
  • Page 274: Removing And Replacing The A29-A32 Test Port Couplers

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A29–A32 Test Port Couplers N5242A Removing and Replacing the A29–A32 Test Port Couplers Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
  • Page 275 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A29–A32 Test Port Couplers Figure 7-18 A29 through A32 Test Port Couplers Removal Service Guide N5242-90001 7-39...
  • Page 276: Removing And Replacing The A33 Reference Mixer Switch

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A33 Reference Mixer Switch N5242A Removing and Replacing the A33 Reference Mixer Switch Tools Required • T-10 TORX driver (set to 9 in-lb) • T-15 TORX driver (set to 14 in-lb) •...
  • Page 277 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A33 Reference Mixer Switch Figure 7-19 A33 Reference Mixer Switch Removal Service Guide N5242-90001 7-41...
  • Page 278: Removing And Replacing The A34-A37 Source Attenuators, The A38-A41 Bias Tees, And The A42-A45 Receiver Attenuators

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A34–A37 Source Attenuators, the A38–A41 Bias Tees, and the A42–A45 Receiver Attenuators N5242A Removing and Replacing the A34–A37 Source Attenuators, the A38–A41 Bias Tees, and the A42–A45 Receiver Attenuators Tools Required •...
  • Page 279 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242ARemoving and Replacing the A34–A37 Source Attenuators, the A38–A41 Bias Tees, and the A42–A45 Receiver Attenuators Figure 7-20 Source and Receiver Step Attenuators and Bias Tees Removal Service Guide N5242-90001 7-43...
  • Page 280: Removing And Replacing The A38-A41 Bias Tees

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A38–A41 Bias Tees N5242A Removing and Replacing the A38–A41 Bias Tees Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
  • Page 281 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A38–A41 Bias Tees Figure 7-21 A38 through A41 Bias Tees Removal Service Guide N5242-90001 7-45...
  • Page 282: Removing And Replacing The A46-A49 Bypass Switches And The A50 Combiner

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A46–A49 Bypass Switches and the A50 Combiner N5242A Removing and Replacing the A46–A49 Bypass Switches and the A50 Combiner Tools Required • T-10 TORX driver (set to 9 in-lb) •...
  • Page 283 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A46–A49 Bypass Switches and the A50 Combiner Figure 7-22 A46 through A49 Bypass Switches and A50 Combiner Removal Service Guide N5242-90001 7-47...
  • Page 284: Removing And Replacing The A51 Hard Disk Drive (Hdd)

    PNA Series Microwave Network Analyzers Removing and Replacing the A51 Hard Disk Drive (HDD) N5242A Removing and Replacing the A51 Hard Disk Drive (HDD) Certain unique files exist on the hard disk drive that are necessary for proper operation of your analyzer.
  • Page 285 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A51 Hard Disk Drive (HDD) Figure 7-23 Hard Disk Drive Assembly Removal Service Guide N5242-90001 7-49...
  • Page 286 Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A51 Hard Disk Drive (HDD) N5242A Reinstalling the HDDA 1. Reinstall the A51 hard disk drive into the analyzer: ③ a. Connect the ribbon cable (item ) to the new A51 hard disk drive assembly.
  • Page 287 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A51 Hard Disk Drive (HDD) Install Backup Files onto the New Hard Disk Drive The files that were previously saved onto a floppy disk or USB memory drive must now be installed onto the new HDD.
  • Page 288: Removing And Replacing The A52 And A53 Option 029 Test Port Switches

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A52 and A53 Option 029 Test Port Switches N5242A Removing and Replacing the A52 and A53 Option 029 Test Port Switches Tools Required • T-10 TORX driver (set to 9 in-lb) •...
  • Page 289 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A52 and A53 Option 029 Test Port Switches Replacement Procedure 1. Reverse the order of the removal procedure. • Be sure to install the bias tee bracket on the new switch and reinstall the bias tee once the bracket has been reinstalled in the analyzer.
  • Page 290: Removing And Replacing The A54 Option 029 Test Port 2 Bridge And The A55 Option 029 Noise Downconverter

    PNA Series Microwave Network Analyzers Removing and Replacing the A54 Option 029 Test Port 2 Bridge and the A55 Option 029 Noise Downconverter N5242A Removing and Replacing the A54 Option 029 Test Port 2 Bridge and the A55 Option 029 Noise Downconverter Tools Required •...
  • Page 291 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the A54 Option 029 Test Port 2 Bridge and the A55 Option 029 Noise Downconverter Replacement Procedure 1. Reverse the order of the removal procedure. • When reassembling the A54/A55 assembly, lay the assemblies on a flat surface while installing and tightening the interconnecting cable (adapter) to ensure that these assemblies will be flush with the side frame when installed.
  • Page 292: Removing And Replacing The Rear Panel

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the Rear Panel N5242A Removing and Replacing the Rear Panel Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
  • Page 293 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the Rear Panel Figure 7-26 Rear Panel Removal Service Guide N5242-90001 7-57...
  • Page 294: Removing And Replacing The Front Panel Led Boards

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the Front Panel LED Boards N5242A Removing and Replacing the Front Panel LED Boards Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
  • Page 295 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the Front Panel LED Boards Figure 7-27 Front Panel LED Boards Removal Service Guide N5242-90001 7-59...
  • Page 296: Removing And Replacing The Fans

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the Fans N5242A Removing and Replacing the Fans Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) • Pozidriv screw driver •...
  • Page 297 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the Fans Figure 7-28 B1 Fan Removal Service Guide N5242-90001 7-61...
  • Page 298: Removing And Replacing The Lithium Battery

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the Lithium Battery N5242A Removing and Replacing the Lithium Battery Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
  • Page 299 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Removing and Replacing the Lithium Battery Figure 7-29 Lithium Battery Removal Service Guide N5242-90001 7-63...
  • Page 300: Post-Repair Procedures

    Repair and Replacement Procedures PNA Series Microwave Network Analyzers Post-Repair Procedures N5242A Post-Repair Procedures After the replacement of an assembly, you must perform the service procedures in the order listed in Table 7-2. Procedures referenced in this table are located in Chapter 3, “Tests and...
  • Page 301 PNA Series Microwave Network Analyzers Repair and Replacement Procedures N5242A Post-Repair Procedures Table 7-2 Related Service Procedures (Continued) Adjustments Verification, Performance, Replaced Assembly and Other Procedures and Other Tests and Procedures Front Panel Keypad and RPG Test A3 Display Test...
  • Page 302 Repair and Replacement Procedures PNA Series Microwave Network Analyzers Post-Repair Procedures N5242A Table 7-2 Related Service Procedures (Continued) Adjustments Verification, Performance, Replaced Assembly and Other Procedures and Other Tests and Procedures Source Adjustment A46–A49 source bypass Source Maximum Power Output Test...
  • Page 303: General Purpose Maintenance Procedures

    General Purpose Maintenance Procedures Service Guide N5242-90001...
  • Page 304: Information In This Chapter

    General Purpose Maintenance Procedures PNA Series Microwave Network Analyzers Information in This Chapter N5242A Information in This Chapter Chapter Eight at-a-Glance Section Title Summary of Content Start Page Error Terms How to use error terms as a preventive Page 8-3 maintenance and troubleshooting tool.
  • Page 305: Error Terms

    PNA Series Microwave Network Analyzers General Purpose Maintenance Procedures N5242A Error Terms Error Terms Using Error Terms as a Diagnostic Tool By examining error terms, you can monitor system performance for preventive maintenance and troubleshooting purposes. The magnitude and shape of the error terms are affected by: •...
  • Page 306: Performing Measurement Calibration

    General Purpose Maintenance Procedures PNA Series Microwave Network Analyzers Error Terms N5242A Performing Measurement Calibration A calibration must be performed to allow the analyzer to calculate the error terms before they can be used as a tool: CAUTION Perform the following procedure only at a static-safe workstation, and wear a grounded wrist strap.
  • Page 307 PNA Series Microwave Network Analyzers General Purpose Maintenance Procedures N5242A Error Terms 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)
  • Page 308 General Purpose Maintenance Procedures PNA Series Microwave Network Analyzers Error Terms N5242A Figure 8-3 Flowgraph of Three-Port Error Terms where: E = error term DIR = Directivity MAT = Forward Source Match and Reverse Load Match TRK = Forward Reflection Tracking and Reverse Transmission Tracking...
  • Page 309 PNA Series Microwave Network Analyzers General Purpose Maintenance Procedures N5242A Error Terms Figure 8-4 Flowgraph of Four-Port Error Terms where: E = error term DIR = Directivity MAT = Forward Source Match and Reverse Load Match TRK = Forward Reflection Tracking and Reverse Transmission Tracking...
  • Page 310: Accessing Error Terms

    General Purpose Maintenance Procedures PNA Series Microwave Network Analyzers Error Terms N5242A Accessing Error Terms Error terms can be accessed either manually or programmatically: Manually • “Front Panel Access to Error Terms” on page 8-8 Programmatically • “GPIB Access to Error Terms” on page 8-9 •...
  • Page 311 PNA Series Microwave Network Analyzers General Purpose Maintenance Procedures N5242A Error Terms 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 and SCPI, refer to the embedded help in the analyzer. Type in keyword “errors, systematic”...
  • Page 312: Error Term Data

    General Purpose Maintenance Procedures PNA Series Microwave Network Analyzers Error Terms N5242A Error Term Data The error term descriptions in this section include the following information: • a table of the error terms • description and significance of each error term •...
  • Page 313 PNA Series Microwave Network Analyzers General Purpose Maintenance Procedures N5242A Error Terms Directivity (E and E and E are the uncorrected forward and reverse directivity error terms of the system. The directivity error of the test port is determined by measuring the S and S reflection of the calibration kit load.
  • Page 314 General Purpose Maintenance Procedures PNA Series Microwave Network Analyzers Error Terms N5242A Isolation (Crosstalk) (E and E Isolation, or crosstalk, is the uncorrected forward and reverse isolation error terms that represent leakage between the test ports and the signal paths. The isolation error terms...
  • Page 315: Option Enable Utility

    PNA Series Microwave Network Analyzers General Purpose Maintenance Procedures N5242A Option Enable Utility Option Enable Utility Accessing the Option Enable Utility To start the option enable utility: • Press UTILITY then Service then Option Enable System • A dialog box similar to the one illustrated in Figure 8-6 is displayed.
  • Page 316: Enabling Or Removing Options

    General Purpose Maintenance Procedures PNA Series Microwave Network Analyzers Option Enable Utility N5242A Enabling or Removing Options There are two types of options: • Hardware: Hardware options involve adding additional hardware to the analyzer. After the proper hardware has been installed in the analyzer, the option can be enabled using the option enable utility.
  • Page 317: Repairing And Recovering Option Data

    PNA Series Microwave Network Analyzers General Purpose Maintenance Procedures N5242A Option Enable Utility Repairing and Recovering Option Data License, option, and model number data are stored in an EEPROM on the A10 frequency reference board and written into the gen.lic file on the hard disk drive. If the data stored in either of these items is lost, it can be recovered from the other item.
  • Page 318: Installing Or Changing A Serial Number

    General Purpose Maintenance Procedures PNA Series Microwave Network Analyzers Option Enable Utility N5242A Installing or Changing a Serial Number It is necessary to reinstall the instrument serial number if the A16 test set motherboard is replaced. IMPORTANT Use extreme care when entering the serial number, as only one attempt is allowed.
  • Page 319: Firmware Upgrades

    PNA Series Microwave Network Analyzers General Purpose Maintenance Procedures N5242A Firmware Upgrades Firmware Upgrades How to Check the Current Firmware Version 1. Press UTILITY , then , then System Help About NA... A dialog box showing the current installed Application Code Version is displayed.
  • Page 320: Operating System Recovery

    General Purpose Maintenance Procedures PNA Series Microwave Network Analyzers Operating System Recovery N5242A Operating System Recovery Recovering from Hard Disk Drive Problems If you suspect that you have a hard disk drive problem, go to the “Hard Drive Recovery” link on the Agilent PNA Series: Service & Support Home Page on the Internet.
  • Page 321 Index Numerics removal and replacement troubleshooting 4-30 illustrated 7-15 A11 13.5 GHz LO synthesizer 010, time domain option board procedure 7-14 020, IF inputs option illustrated 6-15 troubleshooting 4-32 021, source 1 pulse modulator operation 5-10 2-port configuration with 2nd option part number 6-14...
  • Page 322 Index part number 6-14 illustrated 6-41 6-47 6-59 illustrated 6-41 6-47 6-59 removal and replacement operation 5-21 operation 5-17 illustrated 7-25 part number 6-40 6-46 6-58 part number 6-40 6-46 6-58 procedure 7-24 removal and replacement removal and replacement A19 test set motherboard illustrated 7-35 procedure...
  • Page 323 Index A37 test port 2 source step removal and replacement procedure 7-46 attenuator illustrated 7-43 troubleshooting 4-36 illustrated 6-25 6-33 6-47 procedure 7-42 A49 test port 2 source bypass 6-59 switch troubleshooting 4-39 part number 6-24 6-32 6-46 illustrated 6-33 6-59 A43 test port 3 receiver step 6-58...
  • Page 324 Index operation 5-27 noise measurement group processing subgroup 5-32 part number 6-24 6-32 6-46 5-28 receiver group 5-21 6-58 receiver group 5-25 5-26 receiver step attenuators 5-21 removal and replacement signal separation group 5-18 reference mixer switch 5-21 illustrated 7-55 5-19 signal separation group 5-16...
  • Page 325 Index illustrated 7-63 replaceable RF cables procedure 7-36 procedure 7-62 illustrated 6-35 test port 1 battery disposal part numbers 6-34 illustrated 6-19 6-25 6-33 before applying power replaceable ribbon cables 6-41 6-47 6-59 bias tee illustrated 6-39 part number 6-18 6-24 6-32 removal and replacement...
  • Page 326 Index part numbers 6-20 cables, wire harnesses troubleshooting 4-25 4-33 in bottom assembly, Option 200 in bottom assembly, Option 219 typical power output 4-34 illustrated 6-23 illustrated 6-27 channel R part numbers 6-22 troubleshooting 4-25 part numbers 6-26 in bottom assembly, Option 219 characterization, receiver in bottom assembly, adjustment...
  • Page 327 Index high dynamic range CPU board operation 5-31 illustrated 6-15 measurement 5-17 parts list 6-12 operation 5-32 normal configuration removal and replacement part number 6-14 measurement 5-17 illustrated 7-12 7-13 removal and replacement standard 2-port, Option 200 procedure 7-12 illustrated 7-23 standard 4-port, Option 400 troubleshooting...
  • Page 328 Index isolation 8-12 checking current version 8-17 LCD assembly load match 8-11 upgrades 8-17 illustrated 6-13 magnitude firmware upgrade parts list 6-12 downloading from the internet affected by LED board 8-17 monitoring over time illustrated 6-25 6-33 6-73 flowgraph shape affected by 6-75 of one port error terms source match...
  • Page 329 Index front panel keypad assembly part numbers 6-72 instrument markings removal and replacement instrument specifications in external analyzer interconnects illustrated 7-11 illustrated 6-79 front panel 5-31 troubleshooting 4-13 part numbers 6-78 HANDLER I/O front panel LED board in internal analyzer pin assignments 5-14 illustrated...
  • Page 330 Index kits cause of failure 8-11 miscellaneous replaceable parts calibration 2-11 part numbers 6-82 definition of 8-11 handle mixer brick measurements affected by 8-11 illustrated 6-19 6-25 6-33 part numbers 6-83 locating 6-41 6-47 6-59 rack mount assembly part numbers operation 5-21 part numbers...
  • Page 331 Index Non-ANSI/NCSL Z540-1-1994 calibration part numbers 6-28 verification data Option 029/224, bottom assembly N-port calibrated measurements, replaceable RF cables recovering 8-15 Option 551 illustrated 6-37 repairing 8-15 part numbers 6-36 enable utility 8-13 Option 029/419, bottom assembly accessing 8-13 replaceable RF cables dialog box 8-13 OCXO (oven-controlled crystal...
  • Page 332 Index replaceable ribbon cables in bottom assembly, illustrated 6-45 Option 200 6-20 pads part numbers 6-44 in bottom assembly, required for servicing 2-11 replaceable wire harnesses Option 219 6-26 paint illustrated 6-45 in bottom assembly, touch-up part numbers 6-44 Option 219/029 6-28 part numbers 6-83...
  • Page 333 Index illustrated 6-19 6-41 6-47 calibration coefficients 3-33 part number 6-14 6-59 description of removal and replacement part numbers 6-18 6-24 dynamic accuracy 3-34 illustrated 7-21 6-25 6-32 6-33 6-40 frequency accuracy 3-30 procedure 7-20 6-46 6-58 noise floor 3-32 troubleshooting in external analyzer receiver compression...
  • Page 334 Index without handles, Option 1CM reference channel, See R in bottom assembly channel illustrated 6-75 reference mixer switch RAM, main part numbers 6-74 illustrated 6-19 6-25 6-33 operation 5-32 replaceable parts 6-41 6-47 6-59 rear panel hardware, in bottom assembly operation 5-21 connectors...
  • Page 335 Index in bottom assembly, Option 400 procedure 7-10 A27 test port 4 bridge illustrated 6-43 A10 frequency reference board illustrated 7-37 part numbers 6-42 illustrated 7-15 procedure 7-36 in bottom assembly, Option 419 procedure 7-14 A28 test port 2 bridge illustrated 6-49 6-53...
  • Page 336 Index A43 test port 3 receiver step assembly illustrated 6-29 attenuator list of procedures part numbers 6-28 illustrated 7-43 sequence in bottom assembly, Option 224 procedure 7-42 battery illustrated 6-35 A44 test port 4 receiver step illustrated 7-63 part numbers 6-34 attenuator procedure...
  • Page 337 Index symbols source speaker adjustment 3-38 troubleshooting 4-13 scalar calibrated converter measurements calibration 3-38 specifications Option 082 instrument functional group SCPI stabilization, warm up time maximum output power test screws system 3-29 for bottom assemblies splitter power accuracy test 3-28 illustrated 6-73 illustrated...
  • Page 338 Index support source maximum power illustrated 7-53 contacting Agilent 2-13 output 3-29 procedure 7-52 options 2-13 source power accuracy 3-28 test port 1 receiver step organization 2-13 attenuator test port maximum power illustrated 6-25 6-33 6-47 switch, reference mixer output 3-29 illustrated 6-19...
  • Page 339 Index operation 5-27 part number 6-40 6-46 6-58 removal and replacement part number 6-24 6-32 6-46 removal and replacement illustrated 7-47 6-58 procedure 7-38 7-39 procedure 7-46 removal and replacement troubleshooting 4-35 troubleshooting 4-36 illustrated 7-55 test port 3 receiver step test port 4 source step attenuator attenuator illustrated...
  • Page 340 Index removal and replacement A31 test port 4 coupler 4-35 running the receiver display illustrated 7-12 7-13 A32 test port 2 coupler 4-35 4-25 procedure 7-12 A33 reference mixer switch signal separation group 4-33 touch-up 4-39 source group 4-29 paint A34 test port 1 source step traces A, B, C, D, R 4-25...
  • Page 341 Index source 1 pulse modulator, non-ANSI/NCSL Z540-1-1994 Option 021 source 2 pulse modulator, of operating environment Option 022 of operating specifications time domain, Option 010 system 3-19 vector and scalar calibrated dialog box 3-23 frequency converter example of results 3-26 3-27 measurements failure flowchart...
  • Page 342 Index Index-22 Service Guide N5242-90001...

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