Page 1 Service Guide Agilent Technologies PNA Series Microwave Network Analyzer E8361A Part Number E8361-90001 Printed in USA January 2003 © Copyright 2003 Agilent Technologies, Inc. All rights reserved.
Page 2 WITH THESE TERMS, THE WARRANTY TERMS IN THE SEPARATE AGREEMENT WILL CONTROL. 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...
Page 3: Service Guide E8361-90001
Safety Notes The following safety notes are used throughout this manual. Familiarize yourself with each of the notes and its meaning before operating this instrument. All pertinent safety notes for using this product are located in Chapter 1, “Safety and Regulatory Information.” WARNING Warning denotes a hazard.
Page 4 Documentation Map Standard Documentation: 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 Review the Principles of Connector Care ........3-5 About System Verification and Performance Tests .
Page 7 Instrument Block Diagrams Sheet 1 ..........4-59 PNA Series Microwave Network Analyzer E8361A, Std ......4-59 Instrument Block Diagrams Sheet 2 .
Page 8 Contents A13 Frequency Offset Receiver Assembly........5-23 Digital Processing and Digital Control Group Operation .
Page 9 Contents Removing and Replacing the A13 Frequency Offset Receiver Assembly ....7-24 Removing and Replacing the A14 System Motherboard ......7-26 Removing and Replacing the A15 CPU Board .
Page 10 Contents Repairing and Recovering Option Data ......... .B-4 Recovery of Data After Repair .
Page 11: Safety And Regulatory Information
Safety and Regulatory Information Service Guide E8361-90001...
Page 12: Information In This Chapter
Safety and Regulatory Information PNA Series Microwave Network Analyzers Information in This Chapter E8361A 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 E8361A 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 E8361A Servicing 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 15: Electrostatic Discharge Protection
PNA Series Microwave Network Analyzers Safety and Regulatory Information E8361A Electrostatic Discharge Protection 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 16: Regulatory Information
Safety and Regulatory Information PNA Series Microwave Network Analyzers Regulatory Information E8361A 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 17: Compliance With Canadian Emc Requirements
PNA Series Microwave Network Analyzers Safety and Regulatory Information E8361A Regulatory Information Compliance with Canadian EMC Requirements This ISM device complies with Canadian ICES-001. Cet appareil ISM est conforme a la norme NMB du Canada. Compliance with German FTZ Emissions Requirements This network analyzer complies with German FTZ 526/527 Radiated Emissions and Conducted Emission requirements.
Page 18 Safety and Regulatory Information PNA Series Microwave Network Analyzers Regulatory Information E8361A Service Guide E8361-90001...
Page 19: General Product Information
General Product Information Service Guide E8361-90001 2- 1...
Page 20: Information In This Chapter
General Product Information PNA Series Microwave Network Analyzers Information in This Chapter E8361A 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 E8361A Maintenance 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 022, Extended Memory
This option is also available as an upgrade kit, model number: E8361AU-083. Option 099, Firmware Upgrade This upgrade provides the latest revision of firmware for the PNA series network analyzers on CD-ROM. This firmware is user installable. The installation requires a USB CD-ROM drive (see “CD-RW...
Page 23: Option 0Bw, Printed Service Guide
PNA Series Microwave Network Analyzers General Product Information E8361A Analyzer Options, Upgrades, and Accessories Option 0BW, Printed Service Guide This option adds a printed copy of the assembly-level service guide (this manual). This option is not available as an upgrade. It can be ordered as part number E8361-90001.
Page 24: Required Service Test Equipment
General Product Information PNA Series Microwave Network Analyzers Required Service Test Equipment E8361A Required Service Test Equipment Alternate Recommended Model or Equipment Critical Specifications Model or Part Part Number Number Test Instruments and Software Freq: 10 MHz to 24 GHz...
Page 25 PNA Series Microwave Network Analyzers General Product Information E8361A Required Service Test Equipment Alternate Recommended Model or Critical Specifications Model or Part Equipment Part Number Number Calibration and Verification Kits 1.85 mm calibration kit Freq: 10 MHz to 67 GHz...
Page 26 General Product Information PNA Series Microwave Network Analyzers Required Service Test Equipment E8361A Recommended Alternate Critical Specifications Model or Part Model Equipment Number Number Tools Extender board E8356-60021 None T-8 TORX driver 5 in-lb setting T-10 TORX driver 4, 7, and 9 in-lb settings...
Page 27: Agilent Support, Services, And Assistance
PNA Series Microwave Network Analyzers General Product Information E8361A Agilent Support, Services, and Assistance Agilent Support, Services, and Assistance Information on the following topics is included in this section. • “Contacting Agilent” • “Service and Support Options” • “Shipping Your Analyzer to Agilent for Service or Repair”...
Page 28: Service And Support Options
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 29: Tests And Adjustments
Tests and Adjustments Service Guide E8361-90001 3- 1...
Page 30: Information In This Chapter
Information in This Chapter E8361A Information in This Chapter This chapter contains procedures to help you check, verify, and adjust your PNA series network analyzer. • The checks verify the operation of the assemblies in your analyzer. • The verification compares the operation of your analyzer to a gold standard.
Page 31 PNA Series Microwave Network Analyzers Tests and Adjustments E8361A 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 32: Before You Begin
Tests and Adjustments PNA Series Microwave Network Analyzers Before You Begin E8361A 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 33: Review The Principles Of Connector Care
PNA Series Microwave Network Analyzers Tests and Adjustments E8361A 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 34: About System Verification And Performance Tests
The measurement system includes the analyzer, test cables, and calibration kit. The analyzer's system specifications are described in the Agilent PNA Series Network Analyzer Data Sheet and also in the analyzer’s on-line help system. System specifications are included in section titled “Corrected System Performance.”...
Page 35: System Verification Procedure
Certificate of Calibration Agilent Technologies will issue a certificate of calibration for the product upon successful completion of system verification or completion of the performance tests. The certificate of calibration will include a “System Attachment” if the system verification procedure is used to confirm the system specifications.
Page 36: Ansi/Ncsl Z540-1-1994 Verification
Tests and Adjustments PNA Series Microwave Network Analyzers ANSI/NCSL Z540–1–1994 Verification E8361A 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 37: Non-Ansi/Ncsl Z540-1-1994 Verification
PNA Series Microwave Network Analyzers Tests and Adjustments E8361A 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 38: Preliminary Checks
Tests and Adjustments PNA Series Microwave Network Analyzers Preliminary Checks E8361A 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 39 PNA Series Microwave Network Analyzers Tests and Adjustments E8361A Preliminary Checks 5. The result of the operator’s check will be shown as a PASS or FAIL next to the test. Figure 3-3 Operator’s Check Dialog Box If the Operator’s Check Fails 1.
Page 40: The Test Port Cable Checks
Tests and Adjustments PNA Series Microwave Network Analyzers Preliminary Checks E8361A 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 41 PNA Series Microwave Network Analyzers Tests and Adjustments E8361A Preliminary Checks Cable Return Loss Check 1. Press 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 42 Tests and Adjustments PNA Series Microwave Network Analyzers Preliminary Checks E8361A 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. From the Marker menu, click Marker Search. In the Marker Search dialog box, in the Search Type box, select Minimum.
Page 43 PNA Series Microwave Network Analyzers Tests and Adjustments E8361A 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 Preset.
Page 44 Tests and Adjustments PNA Series Microwave Network Analyzers Preliminary Checks E8361A 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 45 PNA Series Microwave Network Analyzers Tests and Adjustments E8361A 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 46 Tests and Adjustments PNA Series Microwave Network Analyzers Preliminary Checks E8361A 12. For the Port 2 Check, connect the cable (with the load attached) to Port 2 and repeat steps 2 through 11. Figure 3-7 Typical Cable Connector Repeatability Response If the Cable Connector Repeatability Check Fails 1.
Page 47: System Verification
PNA Series Microwave Network Analyzers Tests and Adjustments E8361A 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 48: Measurement Uncertainty
Tests and Adjustments PNA Series Microwave Network Analyzers System Verification E8361A 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 49: Measurement Traceability
PNA Series Microwave Network Analyzers Tests and Adjustments E8361A 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 50: Performing System Verification
Tests and Adjustments PNA Series Microwave Network Analyzers System Verification E8361A Performing System Verification The following verification procedure is automated by the analyzer firmware. For each verification device, the analyzer reads a file from the verification disk and sequentially measures the magnitude and phase for all four S-parameters.
Page 51 PNA Series Microwave Network Analyzers Tests and Adjustments E8361A System Verification System Verification Procedure 1. Connect a cable to Port 1 on the analyzer as shown in Figure 3-9. If you desire printed test outputs, connect a printer to the analyzer. For the printer, ensure that the correct driver is loaded and the printer is defined as the default printer.
Page 52 Tests and Adjustments PNA Series Microwave Network Analyzers System Verification E8361A 4. In the Calibration Kit box, select the calibration kit 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 53 PNA Series Microwave Network Analyzers Tests and Adjustments E8361A System Verification If the System Fails the Verification Test IMPORTANT Inspect all connections. Do not remove the cable from the analyzer test port. This will invalidate the calibration that you performed earlier.
Page 54 Tests and Adjustments PNA Series Microwave Network Analyzers System Verification E8361A Interpreting the Verification Results Figure 3-13 shows an example of typical verification results with Tabular Data selected in the Printer Output area of the System Verification dialog box. At the top of the printed output is the name of the device, the serial number of the device, and the date tested.
Page 55 PNA Series Microwave Network Analyzers Tests and Adjustments E8361A System Verification Figure 3-14 shows an example of typical verification results with Measurement Plots selected in the Printer Output area of the System Verification windows. The printed graphical results show the following: •...
Page 56: Performance Tests (Agilent N2721A Software Package)
Performance Tests (Agilent N2721A Software Package The Agilent N2721A software package verifies the electrical performance of your E8364B PNA series microwave network analyzer. The software automatically configures your analyzer to execute the performance tests. The N2721A software package is not included with the analyzer;...
Page 57: Source Power Linearity Test
PNA Series Microwave Network Analyzers Tests and Adjustments E8361A Performance Tests (Agilent N2721A Software Package) Source Power Linearity Test Function of the Test: To verify that the power level is linear over the analyzer’s frequency range and to check the linearity of the automatic leveling control (ALC).
Page 58: Trace Noise Test
Tests and Adjustments PNA Series Microwave Network Analyzers Performance Tests (Agilent N2721A Software Package) E8361A Trace Noise Test Function of the Test: To measure the stability of a signal in the internal source and receiver system of your analyzer. Specification Tested: Test Port Input–Trace Noise Magnitude and Trace Noise Phase Equipment Used: A test cable.
Page 59: Noise Floor Test
PNA Series Microwave Network Analyzers Tests and Adjustments E8361A Performance Tests (Agilent N2721A Software Package) If the Analyzer Fails this Test: • Repeat this test. There are no adjustments that can be made. • Since all four receivers are identical, the suspect failed receiver can be swapped with one of the other receivers to verify that it is faulty.
Page 60: Calibration Coefficient Test
Tests and Adjustments PNA Series Microwave Network Analyzers Performance Tests (Agilent N2721A Software Package) E8361A If the Analyzer Fails this Test: • A failure of this test indicates a failure of one or more of the following assemblies. • A31 channel A receiver •...
Page 61: System Crosstalk Test
PNA Series Microwave Network Analyzers Tests and Adjustments E8361A Performance Tests (Agilent N2721A Software Package) System Crosstalk Test Function of the Test: To measure the level of signal leakage between the analyzer’s test ports. Specification Tested: Test Port Input–Crosstalk Equipment Used: A calibration kit and a test cable.
Page 62: Dynamic Accuracy Test
Tests and Adjustments PNA Series Microwave Network Analyzers Performance Tests (Agilent N2721A Software Package) E8361A 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 63 PNA Series Microwave Network Analyzers Tests and Adjustments E8361A Performance Tests (Agilent N2721A Software Package) If the Analyzer Fails this Test: • A failure of this test indicates a failure of one or more of the following assemblies. • A31 channel A receiver •...
Page 64: Power Meter Accuracy Test
Performance Tests (Agilent N2721A Software Package) E8361A Power Meter Accuracy Test This test is intended for power meters used in testing the PNA series network analyzers. “Dynamic Accuracy Test” requires the use of a power meter that has been calibrated to a higher accuracy than the standard power meter.
Page 65 PNA Series Microwave Network Analyzers Tests and Adjustments E8361A Performance Tests (Agilent N2721A Software Package) Description of the Test The power meter accuracy is verified for various power inputs and the actual readings are recorded in a test record. A range calibrator is used to provide the reference inputs.
Page 66 Tests and Adjustments PNA Series Microwave Network Analyzers Performance Tests (Agilent N2721A Software Package) E8361A 4. Setup the digital voltmeter (DVM) as follows: a. Reset the DVM: Press the blue key followed by Reset. b. Set the sample period to a value greater than one second: Press NPLC, 5, 0, then Enter.
Page 67 PNA Series Microwave Network Analyzers Tests and Adjustments E8361A Performance Tests (Agilent N2721A Software Package) 12. Switch the range calibrator RANGE to 300 µW. 13. Record the DVM voltage reading as value B in the test record. 14. Wait for the power meter reading to settle (no settling drift within 20 seconds).
Page 68 Tests and Adjustments PNA Series Microwave Network Analyzers Performance Tests (Agilent N2721A Software Package) E8361A TEST RECORD FOR POWER METER ACCURACY TEST Power Meter Tested: Model No.: Serial No: Date: Tested by: Test Equipment Used 11683A Serial No.: Range Calibrator: Model No.: Digital Voltmeter: Model No.:...
Page 69: Adjustments
PNA Series Microwave Network Analyzers Tests and Adjustments E8361A Adjustments Adjustments These adjustments are firmware-driven tests that are used to fine-tune your analyzer for optimum response. The tests are as follows: • “Source Calibration Adjustment” on page 3-42 • “Receiver Calibration Adjustment” on page 3-44 •...
Page 70: Source Calibration Adjustment
Tests and Adjustments PNA Series Microwave Network Analyzers Adjustments E8361A Source Calibration 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 Port 1 and Port 2; therefore, a Port 2 adjustment is required.
Page 71 PNA Series Microwave Network Analyzers Tests and Adjustments E8361A Adjustments Figure 3-16 Setup for the Source Calibration Adjustment 2. On the System menu, point to Service, Adjustments, and then click Source Calibration. 3. Ensure the GPIB settings are correct. 4. Click Calibrate, and then follow the instructions as they are displayed.
Page 72: Receiver Calibration Adjustment
Tests and Adjustments PNA Series Microwave Network Analyzers Adjustments E8361A Receiver Calibration 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 73 PNA Series Microwave Network Analyzers Tests and Adjustments E8361A Adjustments Procedure 1. Connect the equipment as shown in Figure 3-17. Connect a GPIB cable between the network analyzer and the power meter. Figure 3-17 Setup 1 for the Receiver Calibration Adjustment 2.
Page 74 Tests and Adjustments PNA Series Microwave Network Analyzers Adjustments E8361A Figure 3-19 Setup 3 for the Receiver Calibration Adjustment 3-46 Service Guide E8361-90001...
Page 75: Lo Power Adjustment
PNA Series Microwave Network Analyzers Tests and Adjustments E8361A Adjustments LO Power Adjustment The LO power adjustment is used to adjust the power level of the LO signals from the A20 LO distribution assembly. This adjustment is done for only one LO output. The differences between each LO output is negligible;...
Page 76: Lo Offset Adjustment
Tests and Adjustments PNA Series Microwave Network Analyzers Adjustments E8361A 8. Reconnect the power and USB cables. Turn on the analyzer. 9. On the System menu, point to Service, Adjustments, and then click LO Power Adjust. 10. Ensure the GPIB settings are correct.
Page 77 PNA Series Microwave Network Analyzers Tests and Adjustments E8361A Adjustments Figure 3-21 Setup for the LO Offset Adjustment 7. Reconnect the power and USB cables. Turn on the analyzer. 8. On the System menu, point to Service, Adjustments, and then click LO Power Adjust.
Page 78: 10 Mhz Frequency Reference Adjustment
Tests and Adjustments PNA Series Microwave Network Analyzers Adjustments E8361A 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 79: 3.8 Ghz Pmyo Frequency Adjustment
PNA Series Microwave Network Analyzers Tests and Adjustments E8361A Adjustments 3.8 GHz PMYO Frequency Adjustment The 3.8 GHz adjustment is used to adjust the frequency accuracy of the network analyzer’s 3.8 GHz permanent-magnet YIG oscillator (PMYO) on the A12 source 20.
Page 80 Tests and Adjustments PNA Series Microwave Network Analyzers Adjustments E8361A 3-52 Service Guide E8361-90001...
Page 81: Troubleshooting
Troubleshooting Service Guide E8361-90001 4- 1...
Page 82: Information In This Chapter
Troubleshooting PNA Series Microwave Network Analyzers Information in This Chapter E8361A 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 83: Protect Against Electrostatic Discharge (Esd)
PNA Series Microwave Network Analyzers Troubleshooting E8361A Protect Against Electrostatic Discharge (ESD) Protect Against Electrostatic Discharge (ESD) This is important. If not properly protected against, electrostatic discharge can seriously damage your analyzer, resulting in costly repair. CAUTION To reduce the chance of electrostatic discharge, follow all of the recommendations outlined in “Electrostatic Discharge Protection”...
Page 84: 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 85: Troubleshooting Organization
PNA Series Microwave Network Analyzers Troubleshooting E8361A 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 86: Power Up Troubleshooting
Troubleshooting PNA Series Microwave Network Analyzers Power Up Troubleshooting E8361A Power Up Troubleshooting WARNING Immediately unplug the instrument from the ac power line if the unit shows any of the following symptoms: • Smoke, arcing, or unusual noise from inside the analyzer.
Page 87: Power Supply Check
PNA Series Microwave Network Analyzers Troubleshooting E8361A Power Up Troubleshooting Power Supply Check NOTE There are no fuses to replace within the power supply. If you determine that 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 by measuring the probe power at the front-panel Probe Power connectors: 1.
Page 88 Troubleshooting PNA Series Microwave Network Analyzers Power Up Troubleshooting E8361A Measure the Individual Voltage Supplies WARNING The instrument contains potentially hazardous voltages. Refer to the safety symbols provided on the instrument and in “General Safety Considerations” on page 1-3 before operating the unit with the cover removed.
Page 89 PNA Series Microwave Network Analyzers Troubleshooting E8361A Power Up Troubleshooting Figure 4-3 E8356-60021 Synthesizer/Reference Extender Measurement Points Table 4-1 Extender Board Measurement Points Measurement Expected Location Signal Description Level (Vdc) Test Equipment Used power supply +5.0 −15.0 power supply −5.0...
Page 90 Troubleshooting PNA Series Microwave Network Analyzers Power Up Troubleshooting E8361A If All Supply Voltages Are Missing Disconnect the line-power cord before removing any assembly. WARNING Procedures described in this document may be performed with power supplied to the product while protective covers are removed.
Page 91 PNA Series Microwave Network Analyzers Troubleshooting E8361A Power Up Troubleshooting To further isolate the failure in the three remaining assemblies, measure the resistance on the extender board (with the power turned off) from the power supply test points to “GND”.
Page 92 Troubleshooting PNA Series Microwave Network Analyzers Power Up Troubleshooting E8361A If the Fans Are Not Operating CAUTION The power supply may be in thermal shutdown if the instrument has been operating without the fans running. Allow the instrument to cool down before troubleshooting.
Page 93: Troubleshooting Lcd Display Problems
PNA Series Microwave Network Analyzers Troubleshooting E8361A Power Up Troubleshooting Troubleshooting LCD Display Problems This procedure is intended to isolate the faulty assembly when the display is dark. If the display is lit, but the color mix is faulty, refer to “A2 Display Test”...
Page 94 Troubleshooting PNA Series Microwave Network Analyzers Power Up Troubleshooting E8361A 6. Connect the display ribbon cable and display lamp cable from A2 to A3. Connect the front panel interface ribbon cable coming from the analyzer to the A3 board. 7. Turn the analyzer on and refer to “Verifying the Inverter Board”...
Page 95 PNA Series Microwave Network Analyzers Troubleshooting E8361A Power Up Troubleshooting Table 4-4 Inverter Board Troubleshooting Steps Input Output (CN1) (CN2) Action Good Good Replace the display lamp. Refer to “Removing and Replacing the Display Inverter Board and the Display Lamp” on page 7-14.
Page 96 Troubleshooting PNA Series Microwave Network Analyzers Power Up Troubleshooting E8361A Verifying the A3 Front Panel Interface Board To verify that the HSYNC (horizontal sync), VSYNC (vertical sync), and LCD clock are functioning correctly, measure the signals listed in Table 4-5...
Page 97: Front Panel Troubleshooting
PNA Series Microwave Network Analyzers Troubleshooting E8361A Front Panel Troubleshooting Front Panel Troubleshooting The front panel assembly consists of the A1 keypad, A2 display, and the A3 front panel interface. The following tests verify the operation of the front panel assembly when the analyzer is in the measurement mode.
Page 98 Troubleshooting PNA Series Microwave Network Analyzers Front Panel Troubleshooting E8361A Checking the Front Panel Keys To check the front panel keys, push each key and compare the decimal value in the Value box under Keys to the key values in Table 4-6.
Page 99: A2 Display Test
PNA Series Microwave Network Analyzers Troubleshooting E8361A Front Panel Troubleshooting Table 4-6 Keyboard Key Numbers Front Front Front Front Value Panel Key Value Panel Key Value Panel Key Value Panel Key Sweep Math/ Scale Macro Type Memory Checking the RPG (Front Panel Knob) To check the RPG knob, rotate the knob and check for a fluid movement of numbers in the box.
Page 100: A3 Front Panel Interface Board
Troubleshooting PNA Series Microwave Network Analyzers Front Panel Troubleshooting E8361A no more than one set of two consecutive dark pixels) • “stuck on” or “dark” pixels less than 6.5 mm apart (excluding consecutive pixels) If any of these symptoms occur, replace the A2 display assembly. Refer to “Removing the...
Page 101: Rear Panel Troubleshooting
PNA Series Microwave Network Analyzers Troubleshooting E8361A 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 102: Checking The Serial (Rs-232), Parallel (1284-C), Or Vga Port
Troubleshooting PNA Series Microwave Network Analyzers Rear Panel Troubleshooting E8361A Checking the SERIAL (RS-232), PARALLEL (1284-C), or VGA Port To verify the proper operation of the SERIAL, PARALLEL, or VGA port: • Connect a known good serial, parallel, or VGA peripheral device.
Page 103: Checking The Gpib Port
PNA Series Microwave Network Analyzers Troubleshooting E8361A Rear Panel Troubleshooting Checking the GPIB Port The network analyzer uses a National Instruments 488.2 GPIB controller and associated driver software. This software includes a test utility which scans the GPIB bus and returns the status of all the connected peripherals.
Page 104: Lan Troubleshooting
Troubleshooting PNA Series Microwave Network Analyzers Rear Panel Troubleshooting E8361A LAN Troubleshooting Problems with the Local Area Network (LAN) can be difficult to solve. Software and protocol problems can make it difficult to determine whether the analyzer’s hardware is working properly, or if there is a problem with the LAN or cabling.
Page 105 PNA Series Microwave Network Analyzers Troubleshooting E8361A Rear Panel Troubleshooting 5. The analyzer attempts four cycles of communications with the indicated LAN device. • It displays the time it took to complete each cycle. • Each cycle times-out after one second if no communication is established and the message, Request timed out, is displayed.
Page 106 Troubleshooting PNA Series Microwave Network Analyzers Rear Panel Troubleshooting E8361A Testing Between Two Analyzers The ability of the analyzer’s LAN to function can be easily tested by connecting two analyzers together using a “crossover cable” (a short length of cable with an RJ-45 connector on each end).
Page 107 PNA Series Microwave Network Analyzers Troubleshooting E8361A Rear Panel Troubleshooting Table 4-7 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 108: Measurement System Troubleshooting
Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting E8361A Measurement System Troubleshooting This section provides troubleshooting procedures for the measurement portion of the PNA series network analyzer. In this section, the analyzer is used as a tool to help isolate the suspected faulty functional group.
Page 109 PNA Series Microwave Network Analyzers Troubleshooting E8361A Measurement System Troubleshooting SOURCE UNLEVELED: The source ALC circuits on the A12 Source or the A16 Test Set Motherboard—E8363B and E8364B only—is running open-loop. For the E8362B, replacing the A12 Source Assembly can repair this. For the E8363B or E8364B, check the cable connections for W37 and W38 from the A23 and A24 Detectors to the A16 Test Set Motherboard, and for W39 from A16 to the A21 SOMA 50.
Page 110: Verifying The A, B, R1, And R2 Traces (Standard S-Parameter Mode)
Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting E8361A Verifying the A, B, R1, and R2 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 111: Where To Begin Troubleshooting
PNA Series Microwave Network Analyzers Troubleshooting E8361A Measurement System Troubleshooting • If all traces are present and are similar to the traces in Figure 4-9, then there are no major problems with the analyzer’s measurement system. There may, however, be a minor failure in the analyzer.
Page 112 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting E8361A — A34 receiver B — A35 receiver motherboard — A6 SPAM • the frequency offset group (Option 080 only) — A9 fractional-N synthesizer (Option 080 only) — A10 frequency reference —...
Page 113 PNA Series Microwave Network Analyzers Troubleshooting E8361A Measurement System Troubleshooting R1 and A Traces If both traces are affected, the problem is in the R1 phase lock loop. • If both traces are missing in all bands, the problem is in the A16 test set motherboard, the A28 R1 first converter, the A32 R1 receiver, or the A22 switch.
Page 114 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting E8361A A Trace Only If the trace is missing in all bands, go to “Checking the Signal Separation Group” on page 4-49. B Trace Only If the trace is missing in all bands, go to “Checking the Signal Separation Group”...
Page 115: Checking The Source Group
NOTE This test is written for a PNA series network analyzer as it was originally shipped from the factory. Due to changes in board production, this test may not show accurate pass/fail results if the A8, A9, A10, A11, A12, or A16 board have been replaced with newer board assemblies.
Page 116 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting E8361A Figure 4-10 Serial Bus Test Dialog Box Node Descriptions, A12 Source 20 Node 111 ALC integrator Node 111 senses the output of the ALC integrator. The output of the ALC integrator is the combined voltage output of all compensation circuits in the ALC.
Page 117 PNA Series Microwave Network Analyzers Troubleshooting E8361A Measurement System Troubleshooting Node Descriptions, A10 Frequency Reference Board Node 211 100 MHz Tune Node 211 senses the tune voltage that phase locks the 100 MHz VCO. The tune voltage is set by referencing the 100 MHz VCO to the internal 10 MHz OCXO or to the 10 MHz EXT REF.
Page 118 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting E8361A Node Descriptions, A8 Fractional-N Synthesizer Board +5 Vdc Supply Voltage Node 411 senses the 5 Vdc supply voltage which Node 411 serves as a measurement reference. Node 412 1.5 to 3.0 GHz VCO Compensation Node 412 senses the average voltage output level of the 1.5 to 3.0 GHz VCO.
Page 119 PNA Series Microwave Network Analyzers Troubleshooting E8361A Measurement System Troubleshooting Node Descriptions, A16 Test Set Motherboard, SOMA 50 Node 611 Detector Level Node 611 senses the power level of the internal detector signal from the A22 switch or the power level from the external detector from the rear panel.
Page 120 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting E8361A Node Descriptions, A16 Test Set Motherboard, AUX 2 −10 V Reference Node 811 senses the −10 V supply voltage which serves Node 811 as a measurement reference. +1.78 V Bias Reference Node 812 senses the +1.78 V bias supply voltage Node 812 which serves as a measurement reference.
Page 121 PNA Series Microwave Network Analyzers Troubleshooting E8361A Measurement System Troubleshooting Source Group Tests NOTE A defective A22 switch can exhibit the same symptom as a faulty source. Therefore, if it is determined that the source is functioning properly, you are directed to “Checking the Signal Separation Group”...
Page 122 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting E8361A A phase lock problem is due to either: • faulty RF signal generation (caused by the A12 source 20, A21 SOMA 50, A23 and A24 SOMA 70) • faulty LO signal generation (caused by the A8, A10, A11, A17 or A18 board)
Page 123 PNA Series Microwave Network Analyzers Troubleshooting E8361A Measurement System Troubleshooting 4. If the signal is present, reconnect cable W1 to A12 and then continue with “Checking the A21 Output, All Bands” on page 4-43. Checking the A21 Output, All Bands 1.
Page 124 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting E8361A Checking the A10 Phase Lock Reference Output, All Bands 1. Refer to the block diagram at the end of this chapter and “Top Cables, All Options Except 080” on page 6-16.
Page 125 PNA Series Microwave Network Analyzers Troubleshooting E8361A Measurement System Troubleshooting 6. If the signal is present, reconnect cable W21, and then continue with “Checking the A8 Fractional-N Synthesizer, Output Band 2” on page 4-45. Checking the A8 Fractional-N Synthesizer, Output Band 2 Perform this procedure if you observe a problem in band 2 in all receivers.
Page 126 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting E8361A 4. For each frequency band in which problems were seen: Set the network analyzer to each of the frequencies indicated in the “Network Analyzer Source Frequency Setting (GHz)” column in Table 4-8 on page 4-47.
Page 127 PNA Series Microwave Network Analyzers Troubleshooting E8361A Measurement System Troubleshooting Table 4-8 LO Path Frequencies Expected A17 Expected A18 Network Analyzer Network Analyzer Output Output Band Frequency Band Source Frequency Frequency Frequency of Problem (GHz) Setting (GHz) (GHz) (GHz) 0.010 to 0.045 .025...
Page 128 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting E8361A Checking the A18 MA 24 Output Perform this procedure if you observe a problem in any band and all signals from the A8 fractional-N synthesizer are present. 1. Refer to the block diagram at the back of this chapter and to “Bottom RF Cables, No...
Page 129: Checking The Signal Separation Group
PNA Series Microwave Network Analyzers Troubleshooting E8361A Measurement System Troubleshooting Checking the Signal Separation Group Before checking the signal separation group, perform the following procedures: • “Getting Ready to Test” on page 4-41 Checking the Output Power of the A and B Signals Using a power meter, you can measure the outputs of the A and B signals from the front panel.
Page 130 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting E8361A Checking Port 2 Power (B Signal) The object of this check is to verify the power of the B signal across the entire frequency range. Perform this test if there is an observed problem only with the channel B trace. The ten second sweep is slow enough to allow you to observe the output power on the power meter as the sweep occurs.
Page 131 PNA Series Microwave Network Analyzers Troubleshooting E8361A Measurement System Troubleshooting Checking the A22 Switch 1. Locate the following semirigid cable at the A22 switch: All ......W3 for Port 1 or W4 for Port 2 2.
Page 132: Checking The Receiver Group
Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting E8361A Checking the Receiver Group Equipment Used for These Tests Model or Alternate Model Equipment Type Part Number or Part Number Spectrum analyzer 8565E 856xE 1. Must be capable of measuring signals at 8.333 MHz and 41.667 MHz.
Page 133 PNA Series Microwave Network Analyzers Troubleshooting E8361A Measurement System Troubleshooting Checking the LO Reject Filter Board Outputs Perform this procedure if a problem appears to be in one of the receiver channels. 1. Refer to the block diagram at the end of this chapter and to “Bottom RF Cables, No...
Page 134: Checking The Frequency Offset Group (Option 080)
Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting E8361A Checking the Frequency Offset Group (Option 080) This section troubleshoots only those circuits specifically related to the CAUTION frequency offset group (option 080). Please refer to “Where to Begin Troubleshooting” on page 4-31 and refer to the appropriate standard S-parameter test—with frequency offset mode off—before proceeding with...
Page 135 PNA Series Microwave Network Analyzers Troubleshooting E8361A Measurement System Troubleshooting 2. Disconnect W94 from A10J11. 3. Connect the spectrum analyzer to A10J11. 4. The spectrum analyzer should measure a signal at 5 MHz. 5. If no 5 MHz signal is present, replace the A10 frequency reference board. Refer to “Removing and Replacing the A6, A8, A9, and A10 Boards”...
Page 136 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting E8361A 5. If this signal is not present, replace the A9 fractional-N synthesizer board. Refer to “Removing and Replacing the A6, A8, A9, and A10 Boards” on page 7-18. 6. If the signal is present, leave the spectrum analyzer connected to A9J106 and continue with “Checking the A9 Fractional-N Synthesizer Bands 3 through 25 Output”...
Page 137 PNA Series Microwave Network Analyzers Troubleshooting E8361A Measurement System Troubleshooting Checking the A13 Frequency Offset Receiver Band 0 Output Perform this procedure if you observe a problem in band 0 and all signals from the A12 source 20 output are present.
Page 138 Troubleshooting PNA Series Microwave Network Analyzers Measurement System Troubleshooting E8361A 4-58 Service Guide E8361-90001...
Page 139 E8361A Overall Block Diagram (With No Options) Service Guide: E8361-90001 KEYPAD DISPLAY PROBE CONNECTORS REAR PANEL INTERCONNECTS PROBE DISPLAY INVERTER POWER A6 SIGNAL PROCESSING A35 RECEIVER MOTHERBOARD A15 CPU PROCESSOR POWER ADC MODULE (SPAM) FLASH 300 kHz INTERFACE RS-232 RS-232 PORT SPEAKER LO REJECT MIXER BIAS...
Page 140: Instrument Block Diagrams Sheet 1
Troubleshooting PNA Series Microwave Network Analyzers Instrument Block Diagrams Sheet 1 E8361A 4-60 Service Guide E8361-90001...
Page 141 E8361A Overall Block Diagram (Includes Options 014 and 080) Service Guide: E8361-90001 KEYPAD DISPLAY PROBE CONNECTORS REAR PANEL INTERCONNECTS PROBE DISPLAY INVERTER POWER A6 SIGNAL PROCESSING A35 RECEIVER MOTHERBOARD A15 CPU PROCESSOR POWER ADC MODULE (SPAM) FLASH 300 kHz INTERFACE RS-232 RS-232 PORT SPEAKER...
Page 142: Instrument Block Diagrams Sheet 2
Troubleshooting PNA Series Microwave Network Analyzers Instrument Block Diagrams Sheet 2 E8361A 4-62 Service Guide E8361-90001...
Page 143: Theory Of Operation
Theory of Operation Service Guide E8361-90001 5- 1...
Page 144: Information In This Chapter
Theory of Operation PNA Series Microwave Network Analyzers Information in This Chapter E8361A Information in This Chapter This chapter provides a general description of the operating theory of the E8361A PNA series microwave network analyzer. • Theory of operation is explained to the assembly level only.
Page 145: Network Analyzer System Operation
Network Analyzer System Operation Network Analyzer System Operation The PNA series network analyzer generates a phase-locked incident signal from the internal synthesized source. By means of signal separation, the incident signal is divided into a reference signal and a test signal. The reference signal is applied to the receiver group, while the test signal is applied to the device under test (DUT) and then to the receiver group.
Page 146 Theory of Operation PNA Series Microwave Network Analyzers Network Analyzer System Operation E8361A 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 output power is leveled by an internal automatic leveling control (ALC) circuit.
Page 147 PNA Series Microwave Network Analyzers Theory of Operation E8361A Network Analyzer System Operation Digital Processor and Digital Control Group The digital processor and digital control group are divided into a front panel group and a data acquisition and processing group. The front panel group provides communication to the network analyzer.
Page 148: Source Group Operation
Theory of Operation PNA Series Microwave Network Analyzers Source Group Operation E8361A Source Group Operation The source group produces a stable output signal by phase locking a yttrium-iron-garnet (YIG) oscillator to a synthesized voltage-controlled oscillator (VCO). Refer to Table 5-2 on page 5-8 for the full frequency range of the source.
Page 149 PNA Series Microwave Network Analyzers Theory of Operation E8361A Source Group Operation Figure 5-2 Source Group Service Guide E8361-90001 5- 7...
Page 150: A8 Fractional-N Synthesizer Board
Theory of Operation PNA Series Microwave Network Analyzers Source Group Operation E8361A Table 5-2 Subsweep Frequencies A8 Frac-N A20 LODA A23/A24 Synthesizer LOMA 12 (L.O.) Source 20 SOMA 50 SOMA 70 Frequency Frequency Frequency Frequency Frequency Frequency (GHz) (GHz) (GHz)
Page 151: A17 L.o. Multiplier/Amplifier 12 (Loma 12)
PNA Series Microwave Network Analyzers Theory of Operation E8361A Source Group Operation In band 2, the output of the swept VCO is passed through a divide-by-2 circuit to produce the output frequencies listed in Table 5-2. In all other bands, the swept VCO signal is sent directly to the synthesizer output.
Page 152: A11 Phase Lock Board
Theory of Operation PNA Series Microwave Network Analyzers Source Group Operation E8361A The 20 MHz reference is sent through a divide-by-5 circuit to produce the 4 MHz signal sent to the A35 receiver motherboard to produce the 1 MHz 2nd LO signal for band 0.
Page 153: A21 Source Multiplier/Amplifier 50 (Soma 50)
PNA Series Microwave Network Analyzers Theory of Operation E8361A Source Group Operation The tune current from the A11 phase lock board splits into two paths. One path is low-pass filtered, removing high frequency components, and goes to the YTO main coil; the other path is highpass filtered, removing low frequency components, and goes to the YTO FM coil.
Page 154: A16 Test Set Motherboard
Theory of Operation PNA Series Microwave Network Analyzers Source Group Operation E8361A • In the third path, a portion of the second-path signal is doubled to produce the 40.0 to 44.7 GHz output for band 21. The source ALC circuitry (located on the A16 test set motherboard) provides feedback to the SOMA 50 to control the output power level.
Page 155 PNA Series Microwave Network Analyzers Theory of Operation E8361A 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 Sweep Holdoff In TTL in, low level holds off sweep 3–6...
Page 156 Theory of Operation PNA Series Microwave Network Analyzers Source Group Operation E8361A Table 5-4 HANDLER I/O Connector Key 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 157 PNA Series Microwave Network Analyzers Theory of Operation E8361A Source Group Operation Table 5-5 AUX I/O Connector Pin Assignments DB-25 Male Connector Pin Numbers Name Function ACOM 0 V, ground reference for analog signals −10 to +10 Vdc output, 10 mA max, Ro = 100 Ω...
Page 158: Signal Separation Group Operation
Theory of Operation PNA Series Microwave Network Analyzers Signal Separation Group Operation E8361A Signal Separation Group Operation The signal separation group divides the source signal into a reference path and a test path. Refer to Figure 5-3 on page 5-16.
Page 159: A22 Switch
PNA Series Microwave Network Analyzers Theory of Operation E8361A Signal Separation Group Operation A22 Switch The output of the A21 SOMA 50 is routed to the A22 switch. The A22 switch is a solid-state switch that switches the signal between the A23 SOMA 70 (Port 1 measurement path) and A24 SOMA 70 (Port 2 measurement path), automatically enabling alternate forward and reverse measurements.
Page 160 Theory of Operation PNA Series Microwave Network Analyzers Signal Separation Group Operation E8361A Normal Option 014 Configuration The normal configuration for the Option 014 is shown in Figure 5-4. 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 161 PNA Series Microwave Network Analyzers Theory of Operation E8361A Signal Separation Group Operation High Dynamic Range Configuration With a few jumper changes, you can configure the Option 014 for higher dynamic range measurements. By swapping the front panel jumpers for one port, signal flow through the corresponding coupler is reversed, increasing the test signal sensitivity by 15 dB.
Page 162: Receiver Group Operation
Theory of Operation PNA Series Microwave Network Analyzers Receiver Group Operation E8361A 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 5-21 is a simplified block diagram of the receiver functional group.
Page 163 PNA Series Microwave Network Analyzers Theory of Operation E8361A Receiver Group Operation Figure 5-6 Receiver Group Service Guide E8361-90001 5- 21...
Page 164: A6 Spam Board (Analog Description)
Theory of Operation PNA Series Microwave Network Analyzers Receiver Group Operation E8361A A6 SPAM Board (Analog Description) The A6 SPAM board contains digital and analog circuitry. For digital descriptions, refer to “A6 SPAM Board (Digital Description)” on page 5-27. In this assembly, the 2nd IF signals from the A, B, R1, and R2 second converters go through a gain stage where signals less than −40 dBm are amplified by 34 dB to ensure...
Page 165: Frequency Offset Group Operation (Option 080)
PNA Series Microwave Network Analyzers Theory of Operation E8361A Frequency Offset Group Operation (Option 080) Frequency Offset Group Operation (Option 080) The frequency offset group provides the circuitry necessary to phase lock the analyzer while the source and receiver are tuned to different frequencies.
Page 166: Digital Processing And Digital Control Group Operation
Theory of Operation PNA Series Microwave Network Analyzers Digital Processing and Digital Control Group Operation E8361A 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 167 PNA Series Microwave Network Analyzers Theory of Operation E8361A Digital Processing and Digital Control Group Operation Figure 5-8 Digital Processing and Digital Control Group Service Guide E8361-90001 5- 25...
Page 168: Front Panel Subgroup
Theory of Operation PNA Series Microwave Network Analyzers Digital Processing and Digital Control Group Operation E8361A Front Panel Subgroup The front panel subgroup contains the following assemblies: • A1 Keypad Assembly • A2 Display Assembly • A3 Front Panel Interface Board A1 Keypad Assembly The A1 keypad assembly provides user interface to the analyzer.
Page 169: Data Acquisition And Processing Subgroup
PNA Series Microwave Network Analyzers Theory of Operation E8361A Digital Processing and Digital Control Group Operation Data Acquisition and Processing Subgroup The data acquisition and processing subgroup contain the following assemblies. See Figure 5-8 on page 5-25. • A6 SPAM Board (Digital Description) •...
Page 170 Theory of Operation PNA Series Microwave Network Analyzers Digital Processing and Digital Control Group Operation E8361A Rear Panel Interconnects The rear panel includes the following interfaces: A universal serial bus (USB) jack (an industry standard 4-pin connector). GPIB A 24-pin, female, type D-24 connector that meets IEEE-488 standards.
Page 171: Power Supply Group Operation
PNA Series Microwave Network Analyzers Theory of Operation E8361A Power Supply Group Operation Power Supply Group Operation The A4 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 172 Theory of Operation PNA Series Microwave Network Analyzers Power Supply Group Operation E8361A 5-30 Service Guide E8361-90001...
Page 173: Replaceable Parts
Replaceable Parts Service Guide E8361-90001 6- 1...
Page 174: Information In This Chapter
Information in This Chapter E8361A Information in This Chapter This chapter: • identifies the replaceable parts for the Agilent PNA series microwave network analyzers. • includes several tables and illustrations to assist you in identifying the correct part for your analyzer.
Page 175: 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 2-9. To order a part that is not listed in the replaceable parts lists: •...
Page 176: Assembly Replacement Sequence
Replaceable Parts PNA Series Microwave Network Analyzers Assembly Replacement Sequence E8361A Assembly Replacement Sequence The following steps describe how to replace an assembly in the network analyzer. Step 1. Identify the faulty group. Begin with Chapter 4, “Troubleshooting.” Follow up with the appropriate troubleshooting chapter that identifies the faulty assembly.
Page 177: Rebuilt-Exchange Assemblies
PNA Series Microwave Network Analyzers Replaceable Parts E8361A Rebuilt-Exchange Assemblies 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 178: Replaceable Parts Listings
Replaceable Parts Listings E8361A Replaceable Parts Listings This section contains the replacement part numbers and their descriptions for your Agilent PNA series microwave network analyzer. You can find the locations of replaceable parts in this section: listed • by reference designator in...
Page 179 PNA Series Microwave Network Analyzers Replaceable Parts E8361A Replaceable Parts Listings Table 6-1 Location by Reference Designator (Continued) Reference Designator Description Location Source multiplier/amplifier 70 (SOMA 70) Source multiplier/amplifier 70 (SOMA 70) Test port 1 coupler Test port 2 coupler...
Page 180 Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings E8361A Table 6-2 Part Number Location by Type of Part Type of Part Location • “Front Panel Assembly, All Options” on page 6-10 • “Top Assemblies and Hardware, All Options Except 080” on...
Page 181 PNA Series Microwave Network Analyzers Replaceable Parts E8361A Replaceable Parts Listings Table 6-2 Part Number Location by Type of Part (Continued) Type of Part Location • Service Tools on page 6-38 • Documentation on page 6-38 • Protective Caps for Connectors on page 6-38 •...
Page 182: Front Panel Assembly, All Options
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings E8361A Front Panel Assembly, All Options Reference Part Designator Number Qty Description E8356-60001 Keypad assembly E8356-60002 Display assembly 0950-3379 Inverter board (included in A2 2090-0386 Display lamp for LCD (included in A2...
Page 183 PNA Series Microwave Network Analyzers Replaceable Parts E8361A Replaceable Parts Listings Figure 6-2 Front Panel Assembly, All Options Service Guide E8361-90001 6- 11...
Page 184: Top Assemblies And Hardware, All Options Except 080
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings E8361A Top Assemblies and Hardware, All Options Except 080 Part Reference Designator Number Description 0950-4219 Power supply assembly E8356-60006 Signal processing ADC module (SPAM) board E8364-60099 Fractional-N synthesizer board E8364-60136...
Page 185 PNA Series Microwave Network Analyzers Replaceable Parts E8361A Replaceable Parts Listings Figure 6-3 Top Assemblies and Hardware, All Options Except 080 Service Guide E8361-90001 6- 13...
Page 186: Top Assemblies And Hardware, All Options Including 080
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings E8361A Top Assemblies and Hardware, All Options Including 080 Part Reference Designator Number Description 0950-4219 Power supply assembly E8356-60006 Signal processing ADC module (SPAM) board E8364-60099 Fractional-N synthesizer board E8364-60099...
Page 187 PNA Series Microwave Network Analyzers Replaceable Parts E8361A Replaceable Parts Listings Figure 6-4 Top Assemblies and Hardware, All Options Including 080 Service Guide E8361-90001 6- 15...
Page 188: Top Cables, All Options Except 080
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings E8361A Top Cables, All Options Except 080 Reference Part Designator Type Number Qty Description A8 fractional-N synthesizer board J106 E8364-20027 to A17 LOMA 12 J2 A8 fractional-N synthesizer board J101...
Page 189 PNA Series Microwave Network Analyzers Replaceable Parts E8361A Replaceable Parts Listings Figure 6-5 Top Cables, All Options Except 080 Service Guide E8361-90001 6- 17...
Page 190: Top Cables, All Options Including 080
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings E8361A Top Cables, All Options Including 080 Reference Part Designator Type Number Qty Description A8 fractional-N synthesizer board J106 E8364-20027 to A17 LOMA 12 J2 A8 fractional-N synthesizer board J101...
Page 191 PNA Series Microwave Network Analyzers Replaceable Parts E8361A Replaceable Parts Listings Figure 6-6 Top Cables, All Options Including 080 Service Guide E8361-90001 6- 19...
Page 192: Bottom Assemblies, No Options
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings E8361A Bottom Assemblies, No Options Part Reference Designator Number Qty Description E8364-60138 Test set motherboard 5087-7247 LOMA 12 5087-6247 5087-7248 MA 24 5087-6248 5087-7139 Splitter 5087-7129 LODA 5087-6129 5087-7130 SOMA 50...
Page 193 PNA Series Microwave Network Analyzers Replaceable Parts E8361A Replaceable Parts Listings Figure 6-7 Bottom Assemblies, No Options Service Guide E8361-90001 6- 21...
Page 194: Bottom Rf Cables, No Options
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings E8361A Bottom RF Cables, No Options Reference Part Designator Number Qty Description E8364-20036 A21 SOMA 50 to A12 source 20 assembly E8361-20002 A21 SOMA 50 to A22 switch E8361-20003 A22 switch to A23 SOMA 70...
Page 195 PNA Series Microwave Network Analyzers Replaceable Parts E8361A Replaceable Parts Listings Figure 6-8 Bottom RF Cables, No Options Service Guide E8361-90001 6- 23...
Page 196: Bottom Flexible Cables, No Options
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings E8361A Bottom Flexible Cables, No Options Reference Part Designator Number Qty Description A27 channel A mixer E8364-60019 to LO reject filter board A28 channel R1 mixer E8364-60020 to LO reject filter board...
Page 197 PNA Series Microwave Network Analyzers Replaceable Parts E8361A Replaceable Parts Listings Figure 6-9 Bottom Flexible Cables, No Options Service Guide E8361-90001 6- 25...
Page 198: Bottom Ribbon Cables And Wrapped-Wire, No Options
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings E8361A Bottom Ribbon Cables and Wrapped-Wire, No Options Reference Part Designator Number Description Type A41 hard disk drive assembly ➀ 8121-0817 to A15 CPU board A16 test set motherboard ➁...
Page 199 PNA Series Microwave Network Analyzers Replaceable Parts E8361A Replaceable Parts Listings Figure 6-10 Bottom Ribbon Cables and Wrapped Wire, No Options Service Guide E8361-90001 6- 27...
Page 200: Bottom Hardware, No Options
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings E8361A Bottom Hardware, No Options Reference Part Designator Number Qty Description ➀ E8361-00001 SOMA 70 bracket ➁ E8364-20115 mixer bracket ➂ E8361-60001 mixer bias board Machine screw M3.0 x 6 CW-PN-TX ➃...
Page 201 PNA Series Microwave Network Analyzers Replaceable Parts E8361A Replaceable Parts Listings Figure 6-11 Bottom Hardware, No Options Service Guide E8361-90001 6- 29...
Page 202: Parts Included With Option 014 (With Or W/O Option 080)
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings E8361A Parts Included with Option 014 (with or w/o Option 080) Reference Part Designator Number Qty Description Not shown. See “Top Assemblies and Hardware, All Options A9, A13 Including 080” on page 6-14.
Page 203 PNA Series Microwave Network Analyzers Replaceable Parts E8361A Replaceable Parts Listings Figure 6-12 Parts Included with Option 014 (with or w/o Option 080) Service Guide E8361-90001 6- 31...
Page 204: Internal Hardware And Parts, All Options
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings E8361A Internal Hardware and Parts, All Options Reference Part Designator Number Description 0950-2782 Floppy disk drive 8121-0120 Cable E4406-60014 Floppy disk drive board E4406-40006 Floppy disk drive mount E8356-00007 Floppy disk drive enclosure 3160-1085 ➀...
Page 205 PNA Series Microwave Network Analyzers Replaceable Parts E8361A Replaceable Parts Listings Figure 6-13 Internal Hardware and Parts, All Options Service Guide E8361-90001 6- 33...
Page 206: External Hardware And Parts, All Options
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings E8361A External Hardware and Parts, All Options Reference Part Designator Number Description ➀ E8356-00025 Trim strip, filler ➁ E8356-00011 Inner cover ➂ E8364-00003 Outer cover ➃ 5041-9611 Rear feet ➄...
Page 207 PNA Series Microwave Network Analyzers Replaceable Parts E8361A Replaceable Parts Listings Figure 6-14 External Hardware and Parts, All Options Service Guide E8361-90001 6- 35...
Page 208: Hard Disk Drive Assembly
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings E8361A Hard Disk Drive Assembly Reference Part Designator Number Description E8801-60063 Programmed hard disk drive ➀ E8364-20118 Hard disk drive bracket ➁ 0515-0664 Machine screw, M3.0 x 12 CW-PN-TX ➂...
Page 209: Rear Panel Assembly, All Options
PNA Series Microwave Network Analyzers Replaceable Parts E8361A Replaceable Parts Listings Rear Panel Assembly, All Options Item Part Number Number Description ➀ E8364-20117 Rear frame assembly (includes items 2-6) ➁ E8356-00023 Cover plate, large ➂ 0515-0372 Machine screw, M3.0 x 8, CW-PN-TX ➃...
Page 210: Miscellaneous Part Numbers
T-20 TORX driver (set to 21 in-lb) 5/16-in, open-end torque wrench (set to 10 in-lb) 1/4-in to 5/16-in open-ended wrench Documentation Installation and Quick Start Guide (for all PNA series analyzers) E8356-90001 Service Guide (this manual) E8361-90001 CD-ROM (Includes the following:)
Page 211: Esd Supplies
PNA Series Microwave Network Analyzers Replaceable Parts E8361A Replaceable Parts Listings Model or Part Description Number ESD Supplies Adjustable antistatic wrist strap 9300-1367 Antistatic wrist strap grounding cord (5 foot length) 9300-0980 Static control table mat and earth ground wire...
Page 212: Miscellaneous Part Numbers (Continued)
Replaceable Parts PNA Series Microwave Network Analyzers Replaceable Parts Listings E8361A Miscellaneous Part Numbers (Continued) Model or Part Description Number Rack Mount Kits and Handle Kits Rack mount kit for instruments with handles (Option 1CP) 5063-9237 Rack mount flange for use with handles (two included in 5063-9237)
Page 213: Repair And Replacement Procedures
Repair and Replacement Procedures Service Guide E8361-90001 7- 1...
Page 214: Information In This Chapter
PNA Series Microwave Network Analyzers Information in This Chapter E8361A 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 215: Before Starting The Removal And Replacement Procedures
PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Before Starting the Removal and Replacement Procedures Before Starting the Removal and Replacement Procedures Before starting the removal and replacement procedures, review these warnings, cautions, and the assembly replacement sequence.
Page 216: Removal And Replacement Procedures
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removal and Replacement Procedures E8361A Removal and Replacement Procedures Table 7-1 List of Procedures Reference Designator Assembly Type Location Covers, outer and inner Page 7-6 Receiver deck Page 7-8 L.O. reject filter board (part of A31, A32, A33, A34 procedure)
Page 217 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removal and Replacement Procedures Table 7-1 List of Procedures Reference Designator Assembly Type Location LODA Page 7-38 SOMA 50 Page 7-40 Switch Page 7-42 SOMA 70 (Port 1) Page 7-44...
Page 218: Removing The Covers
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing the Covers E8361A 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 219 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing the Covers Figure 7-1 Outer and Inner Cover Removal Service Guide E8361-90001 7- 7...
Page 220: Raising And Removing The Receiver Deck
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Raising and Removing the Receiver Deck E8361A Raising and Removing the Receiver Deck Tools Required • T-10 TORX driver (set to 9 in-lb) Raising the Receiver Deck Refer to Figure 7-2 for this procedure.
Page 221 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Raising and Removing the Receiver Deck Figure 7-2 Receiver Deck, Raising and Removal Service Guide E8361-90001 7- 9...
Page 222: Removing And Replacing The Front Panel Assembly
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the Front Panel Assembly E8361A 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 223 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing and Replacing the Front Panel Assembly Figure 7-3 Front Panel Assembly Removal Service Guide E8361-90001 7- 11...
Page 224: Removing And Replacing Front Panel Subassemblies
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing Front Panel Subassemblies E8361A Removing and Replacing Front Panel Subassemblies Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
Page 225 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing and Replacing Front Panel Subassemblies Replacement Procedure NOTE When replacing the assemblies, ensure that the ribbon cables are not under the assemblies. 1. Reverse the order of the removal procedure.
Page 226: Removing And Replacing The Display Inverter Board And The Display Lamp
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the Display Inverter Board and the Display Lamp E8361A Removing and Replacing the Display Inverter Board and the Display Lamp Tools Required • T-10 TORX driver (set to 9 in-lb) •...
Page 227 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing and Replacing the Display Inverter Board and the Display Lamp NOTE To avoid dust or dirt particles from getting in between the display glass and the display, do not completely take out the display.
Page 228: Removing And Replacing The A4 Power Supply Assembly
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A4 Power Supply Assembly E8361A Removing and Replacing the A4 Power Supply Assembly Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
Page 229 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing and Replacing the A4 Power Supply Assembly Figure 7-6 A4 Power Supply Assembly Removal Service Guide E8361-90001 7- 17...
Page 230: Removing And Replacing The A6, A8, A9, And A10 Boards
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A6, A8, A9, and A10 Boards E8361A Removing and Replacing the A6, A8, A9, and A10 Boards Tools Required • T-10 TORX driver (set to 9 in-lb) •...
Page 231 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing and Replacing the A6, A8, A9, and A10 Boards Figure 7-7 A6, A8, A9, and A10 Board Assemblies Removal Service Guide E8361-90001 7- 19...
Page 232: Removing And Replacing The A11 Phase Lock Board
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A11 Phase Lock Board E8361A Removing and Replacing the A11 Phase Lock Board Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
Page 233 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing and Replacing the A11 Phase Lock Board Figure 7-8 A11 Phase Lock Board Removal Service Guide E8361-90001 7- 21...
Page 234: Removing And Replacing The A12 Source 20
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A12 Source 20 E8361A Removing and Replacing the A12 Source 20 Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
Page 235 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing and Replacing the A12 Source 20 Figure 7-9 A12 Source 20 Removal Service Guide E8361-90001 7- 23...
Page 236: Removing And Replacing The A13 Frequency Offset Receiver Assembly
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A13 Frequency Offset Receiver Assembly E8361A Removing and Replacing the A13 Frequency Offset Receiver Assembly Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
Page 237 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing and Replacing the A13 Frequency Offset Receiver Assembly Figure 7-10 A13 Frequency Offset Receiver Assembly Removal Service Guide E8361-90001 7- 25...
Page 238: Removing And Replacing The A14 System Motherboard
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A14 System Motherboard E8361A 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 239 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing and Replacing the A14 System Motherboard Figure 7-11 A14 System Motherboard Removal Service Guide E8361-90001 7- 27...
Page 240: Removing And Replacing The A15 Cpu Board
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A15 CPU Board E8361A Removing and Replacing the A15 CPU Board Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
Page 241 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing and Replacing the A15 CPU Board Figure 7-12 A15 CPU Board Removal Service Guide E8361-90001 7- 29...
Page 242: Removing And Replacing The A16 Test Set Motherboard
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A16 Test Set Motherboard E8361A Removing and Replacing the A16 Test Set Motherboard Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
Page 243 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing and Replacing the A16 Test Set Motherboard Figure 7-13 A16 Test Set Motherboard Removal Service Guide E8361-90001 7- 31...
Page 244: Removing And Replacing The A17 Loma 12
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A17 LOMA 12 E8361A Removing and Replacing the A17 LOMA 12 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 E8361A Removing and Replacing the A17 LOMA 12 Figure 7-14 A17 LOMA 12 Removal Service Guide E8361-90001 7- 33...
Page 246: Removing And Replacing The A18 Ma 24
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A18 MA 24 E8361A Removing and Replacing the A18 MA 24 Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
Page 247 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing and Replacing the A18 MA 24 Figure 7-15 A18 MA 24 Removal Service Guide E8361-90001 7- 35...
Page 248: Removing And Replacing The A19 Splitter
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A19 Splitter E8361A Removing and Replacing the A19 Splitter Tools Required • T-10 TORX driver (set to 9 in-lb) • T-20 TORX driver (set to 21 in-lb) •...
Page 249 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing and Replacing the A19 Splitter Figure 7-16 A19 Splitter Removal Service Guide E8361-90001 7- 37...
Page 250: Removing And Replacing The A20 Loda
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A20 LODA E8361A Removing and Replacing the A20 LODA 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 E8361A Removing and Replacing the A20 LODA Figure 7-17 A20 LODA Removal Service Guide E8361-90001 7- 39...
Page 252: Removing And Replacing The A21 Soma 50
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A21 SOMA 50 E8361A Removing and Replacing the A21 SOMA 50 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 E8361A Removing and Replacing the A21 SOMA 50 Figure 7-18 A21 SOMA 50 Removal Service Guide E8361-90001 7- 41...
Page 254: Removing And Replacing The A22 Switch
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A22 Switch E8361A Removing and Replacing the A22 Switch 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 E8361A Removing and Replacing the A22 Switch Figure 7-19 A22 Switch Removal Service Guide E8361-90001 7- 43...
Page 256: Removing And Replacing The A23 And A24 Soma 70S
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A23 and A24 SOMA 70s E8361A Removing and Replacing the A23 and A24 SOMA 70s 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 E8361A Removing and Replacing the A23 and A24 SOMA 70s Figure 7-20 A23 and A24 SOMA 70s Removal Service Guide E8361-90001 7- 45...
Page 258: Removing And Replacing The A25 And A26 Test Port Couplers
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A25 and A26 Test Port Couplers E8361A Removing and Replacing the A25 and A26 Test Port Couplers Tools Required • T-10 TORX driver (set to 9 in-lb) •...
Page 259 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing and Replacing the A25 and A26 Test Port Couplers Figure 7-21 A25 and A26 Test Port Couplers Removal Service Guide E8361-90001 7- 47...
Page 260: Removing And Replacing The A27, A28, A29, And A30 First Converters (Mixers) And Mixer Bias Board
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A27, A28, A29, and A30 First Converters (Mixers) and Mixer Bias Board E8361A Removing and Replacing the A27, A28, A29, and A30 First Converters (Mixers) and Mixer Bias Board Tools Required •...
Page 261 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing and Replacing the A27, A28, A29, and A30 First Converters (Mixers) and Mixer Bias Board Figure 7-22 A27, A28, A29, and A30 First Converters (Mixers) Removal Service Guide E8361-90001...
Page 262: Removing And Replacing The A31, A32, A33, And A34 Receiver Modules And Lo Reject Filter Board
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A31, A32, A33, and A34 Receiver Modules and LO Reject Filter Board E8361A Removing and Replacing the A31, A32, A33, and A34 Receiver Modules and LO Reject Filter Board Tools Required •...
Page 263 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing and Replacing the A31, A32, A33, and A34 Receiver Modules and LO Reject Filter Board Figure 7-23 A31, A32, A33, and A34 Modules and LO Reject Filter Board Removal...
Page 264: Removing And Replacing The A35 Receiver Motherboard
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A35 Receiver Motherboard E8361A Removing and Replacing the A35 Receiver Motherboard 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 E8361A Removing and Replacing the A35 Receiver Motherboard Figure 7-24 A35 Receiver Motherboard Removal Service Guide E8361-90001 7- 53...
Page 266: Removing And Replacing The A40 Floppy Disk Drive
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A40 Floppy Disk Drive E8361A Removing and Replacing the A40 Floppy Disk Drive 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 E8361A Removing and Replacing the A40 Floppy Disk Drive Figure 7-25 A40 Floppy Disk Drive Removal Figure 7-26 A40 Floppy Disk Drive (Exploded View) Service Guide E8361-90001 7- 55...
Page 268: Removing And Replacing The A41 Hard Disk Drive
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A41 Hard Disk Drive E8361A Removing and Replacing the A41 Hard Disk Drive Certain unique files exist on the hard disk drive that are necessary for proper operation of your analyzer.
Page 269: Tools Required
PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing and Replacing the A41 Hard Disk Drive 4. Copy each of the following files from the hard disk drive to the floppy disk drive: a. Files to copy: gen.lic...
Page 270 Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A41 Hard Disk Drive E8361A Removal Procedure 1. Disconnect the power cord. Removing the HDDA Refer to Figure 7-27 for this procedure. ① 1. With a T-10 TORX driver, loosen the four HDDA mounting screws (item ) on the rear panel.
Page 271 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing and Replacing the A41 Hard Disk Drive Figure 7-28 Hard Disk Drive Assembly (Exploded View) Replacement Procedure Installing the New A41 Hard Disk Drive Refer to Figure 7-28. 1. With the disk drive bracket right-side up (it is shown upside down in...
Page 272 Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the A41 Hard Disk Drive E8361A ① ② 4. Install the four screws (item ), finger tight, through the eight bushings (item ), to attach the hard disk drive to the bracket.
Page 273 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing and Replacing the A41 Hard Disk Drive 5. After all files have been copied, remove the floppy disk from the analyzer’s disk drive and exit both copies of Windows Explorer.
Page 274: Removing And Replacing The Midweb And The B1 Fan
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the Midweb and the B1 Fan E8361A Removing and Replacing the Midweb and the B1 Fan 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 E8361A Removing and Replacing the Midweb and the B1 Fan Removing the Midweb Refer to Figure 7-29. ① 1. Disconnect the power cable (item ) for the three fans from the A14 system motherboard.
Page 276 Repair and Replacement Procedures PNA Series Microwave Network Analyzers Removing and Replacing the Midweb and the B1 Fan E8361A Removing the Fan Refer to Figure 7-30. 1. To remove the fan, it is necessary to remove the four nylon rivets that attach it to the ➀...
Page 277: Removing And Replacing The Usb Hub
PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Removing and Replacing the USB Hub Removing and Replacing the USB Hub Tools Required • T-10 TORX driver (set to 9 in-lb) • ESD grounding wrist strap Removal Procedure Refer to Figure 7-31 for this procedure.
Page 278: Post-Repair Procedures
Repair and Replacement Procedures PNA Series Microwave Network Analyzers Post-Repair Procedures E8361A Post-Repair Procedures After the replacement of an assembly, you must perform the service procedures in the order listed in Table 7-2. Refer to the following chapters in this manual for the procedures referenced in this table.
Page 279 PNA Series Microwave Network Analyzers Repair and Replacement Procedures E8361A Post-Repair Procedures Table 7-2 Related Service Procedures (Continued) Adjustments Verification, Performance, Replaced Assembly and Other Procedures and Other Tests and Procedures Reinstall the serial number. The Operator’s Check (Refer to “Installing or...
Page 280 Repair and Replacement Procedures PNA Series Microwave Network Analyzers Post-Repair Procedures E8361A Table 7-2 Related Service Procedures (Continued) Adjustments Verification, Performance, Replaced Assembly and Other Procedures and Other Tests and Procedures Restore previously saved receiver calibration data A41 hard disk drive...
Page 281: A Error Terms
Error Terms Service Guide E8361-90001 A- 1...
Page 282: Information In This Appendix
E8361A Information in This Appendix Your PNA series network analyzer calculates error terms by measuring well-defined calibration devices over the frequency range of interest and comparing the measured data with an ideal model for the devices. The differences of the compared data represent systematic (repeatable) errors of the analyzer system.
Page 283: Using Error Terms As A Diagnostic Tool
PNA Series Microwave Network Analyzers Error Terms E8361A Using Error Terms as a Diagnostic Tool 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 284: Performing Measurement Calibration
Error Terms PNA Series Microwave Network Analyzers Performing Measurement Calibration E8361A 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 285 PNA Series Microwave Network Analyzers Error Terms E8361A Using Flowgraphs to Identify Error Terms Figure A-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 286: Accessing Error Terms
Error Terms PNA Series Microwave Network Analyzers Accessing Error Terms E8361A Accessing Error Terms Error terms can be accessed either manually or programmatically: Manually • “Front Panel Access to Error Terms” on page A-6 Programmatically • “GPIB Access to Error Terms” on page A-7 •...
Page 287: Programmatic Access To Error Terms
PNA Series Microwave Network Analyzers Error Terms E8361A Accessing 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 288: Error Term Data
Error Terms PNA Series Microwave Network Analyzers Error Term Data E8361A Error Term Data The error term descriptions in this section include the following information: • a table of the error terms • typical plots of results • significance of each error term •...
Page 289 PNA Series Microwave Network Analyzers Error Terms E8361A Error Term Data Table A-1 Error Term Data Frequency Range 10 MHz 67 GHz 45 MHz 2 GHz 10 GHz 20 GHz 30 GHz 50 GHz 60 GHz 2 GHz 10 GHz...
Page 290: Directivity (Edf And Edr
Error Terms PNA Series Microwave Network Analyzers Error Term Data E8361A 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...
Page 291: Source Match (Esf And Esr
PNA Series Microwave Network Analyzers Error Terms E8361A Error Term Data Source Match (E and E and E are the forward and reverse uncorrected source match terms of the driven port. They are obtained by measuring the reflection (S ) of an open, and a short that are connected directly to the ports.
Page 292: Load Match (Elf And Elr
Error Terms PNA Series Microwave Network Analyzers Error Term Data E8361A Load Match (E and E Load match is a measure of the impedance match of the test port that terminates the output of a 2-port device. The match of test port cables is included in this response. Load...
Page 293: Reflection Tracking (Erf And Err
PNA Series Microwave Network Analyzers Error Terms E8361A Error Term Data Reflection Tracking (E and E Reflection tracking is the difference between the frequency response of the reference path (R1 or R2path) and the frequency response of the reflection test path (A or B input path).
Page 294: Transmission Tracking (Etf And Etr
Error Terms PNA Series Microwave Network Analyzers Error Term Data E8361A Transmission Tracking (E and E Transmission tracking is the difference between the frequency response of the reference path (including the R input) and the frequency response of the transmission test path (including the A or B input) while measuring transmission.
Page 295: Isolation (Exf And Exr
PNA Series Microwave Network Analyzers Error Terms E8361A Error Term Data Isolation (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 296 Error Terms PNA Series Microwave Network Analyzers Error Term Data E8361A A-16 Service Guide E8361-90001...
Page 297: B Option Enable Utility
Option Enable Utility Service Guide E8361-90001 B- 1...
Page 298: Information In This Appendix
Option Enable Utility PNA Series Microwave Network Analyzers Information in This Appendix E8361A Information in This Appendix NOTE For more in-depth information on option enable, refer to the embedded help in the analyzer. Appendix B at-a-Glance Section Title Summary of Content...
Page 299: Accessing The Option Enable Utility
PNA Series Microwave Network Analyzers Option Enable Utility E8361A Accessing the Option Enable Utility Accessing the Option Enable Utility To start the option enable application: • On the menu, point to , and then click System Service Option Enable • The dialog box illustrated in Figure B-1 is displayed.
Page 300: Repairing And Recovering Option Data
Option Enable Utility PNA Series Microwave Network Analyzers Repairing and Recovering Option Data E8361A Repairing and Recovering Option Data License, option, and model number data are stored in an EPROM 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 301: Installing Or Changing A Serial Number
PNA Series Microwave Network Analyzers Option Enable Utility E8361A Installing or Changing a Serial Number 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 302 Option Enable Utility PNA Series Microwave Network Analyzers Installing or Changing a Serial Number E8361A Service Guide E8361-90001...
Page 303: C Firmware Upgrades
Firmware Upgrades Service Guide E8361-90001 C- 1...
Page 304: Information In This Appendix
Firmware Upgrades PNA Series Microwave Network Analyzers Information in This Appendix E8361A Information in This Appendix This appendix provides instructions for installing firmware upgrades in your PNA series microwave network analyzer. Appendix C at-a-Glance Section Title Summary of Content Start Page...
Page 305: Downloading Using Option 099, Firmware Upgrade
PNA Series Microwave Network Analyzers Firmware Upgrades E8361A Downloading Using Option 099, Firmware Upgrade Downloading Using Option 099, Firmware Upgrade Option 099 provides a firmware upgrade kit containing a CD-ROM that contains firmware upgrades for your network analyzer. Refer to “Option 099, Firmware Upgrade”...
Page 306: Downloading Over The Lan
Firmware Upgrades PNA Series Microwave Network Analyzers Downloading Using Option 099, Firmware Upgrade E8361A Downloading Over the LAN This procedure assumes that the network analyzer and the computer are both connected to the same LAN or are connected using a crossover cable.
Page 307: D Operating System Recovery
Operating System Recovery Service Guide E8361-90001 D- 1...
Page 308: Information In This Appendix
Operating System Recovery PNA Series Microwave Network Analyzers Information in This Appendix E8361A Information in This Appendix Appendix D at-a-Glance Section Title Summary of Content Start Page Overview of the analyzer’s hard disk drive file storage system and the impact of the operating...
Page 309: Overview
E8361A Overview Overview This recovery procedure will completely restore the operating system of the PNA series network analyzer to the original factory condition. It will not function if the hard drive is damaged. If you have made an emergency repair disk, you may be able to recover from some Windows system problems without the loss of data.
Page 310: System Recovery Procedure
Operating System Recovery PNA Series Microwave Network Analyzers System Recovery Procedure E8361A System Recovery Procedure 1. Click , and then Start Shutdown Restart Normally, you can boot from the D: drive (recovery partition) which will allow NOTE you to erase and restore the C: drive. This is an available selection during the normal boot-up process.
Page 311: If The Operating System Does Not Boot From The Hard Disk Drive
PNA Series Microwave Network Analyzers Operating System Recovery E8361A System Recovery Procedure If the Operating System Does Not Boot From the Hard Disk Drive If the network analyzer is unable to boot from the hard disk drive, then you must make a DOS boot disk.
Page 312: If The Operating System Does Not Boot From The Floppy Disk Drive
Operating System Recovery PNA Series Microwave Network Analyzers System Recovery Procedure E8361A If the Operating System Does Not Boot From the Floppy Disk Drive You may have to change the network analyzer Bios settings to have it scan the floppy disk drive before booting from the hard disk drive.
Page 313 Index Numerics A14 system motherboard part number 6-20 illustrated 6-13 6-15 removal and replacement 1284-C port operation 5-26 5-28 5-29 illustrated 7-39 rear panel connector 5-28 part number 6-12 6-14 procedure 7-38 troubleshooting 4-22 removal and replacement 7-26 troubleshooting 4-48 30-dB fixed attenuators illustrated 7-27...
Page 314 Index procedure 7-48 part number 6-20 A9 fractional-N synthesizer board operation 5-23 troubleshooting 4-52 removal and replacement removal and replacement 7-18 A28 channel R1 first converter illustrated 7-51 illustrated 6-21 illustrated 7-19 procedure 7-50 part number 6-20 test nodes 4-40 troubleshooting 4-53 removal and replacement...
Page 315 Index frequency range and max ouput splitter assembly operation power switch splitter 50 5-17 troubleshooting frequency reference board test port couplers 5-17 band 1 4-44 assembly test set motherboard 5-12 band 1 for A9 4-55 front panel interconnects 5-26 USB hub 5-28 band 2 4-45...
Page 316 Index CE mark configuration certificate of calibration high dynamic range 5-19 cable certificate of calibration, diagram 5-19 substitution 3-22 Option UK6 2-10 Option 014 5-18 test port changing connector checks 3-10 3-12 3-13 3-14 a serial number care 3-15 3-17 channel A principles of troubleshooting...
Page 317 Index CPU board directivity isolation A-15 illustrated 6-13 6-15 cause of failure A-10 load match A-12 operation 5-27 definition of A-10 magnitude part numbers 6-12 6-14 measurements affected by A-10 affected by removal and replacement display assembly monitoring over time illustrated 6-11 illustrated...
Page 318 Index feet of two port error terms knob analyzer using to identify error terms part number 6-10 illustrated 6-35 test 4-19 part numbers 6-34 Fourier transform troubleshooting 4-17 firmware upgrade fractional-N synthesizer LED board downloading from the internet operation 5-23 illustrated 6-29 fractional-N synthesizer board...
Page 319 Index handle keypad assembly kits data storage 5-28 illustrated 6-11 part numbers 6-40 insertion loss operation 5-26 check HANDLER I/O part number 6-10 connector failure of 3-14 removal and replacement pin assignments 5-14 test port cables 3-14 illustrated 7-13 rear panel 5-12 installing procedure...
Page 320 Index miscellaneous part numbers midweb operating environment removal and replacement 7-62 specifications illustrated 7-63 verification part numbers midweb fans operation by type of part troubleshooting 4-12 A13 frequency offset receiver replaceable parts miscellaneous parts assembly 5-23 by reference designator location of part numbers A9 fractional-N synthesizer LODA board...
Page 321 Index option cables tools analyzer for bottom assembly, service 6-38 data Option 014 6-30 upgrade kits 6-39 recovering for top assembly, Option 080 parts repairing external analyzer 6-18 enable utility illustrated 6-35 for top assembly, without accessing part numbers 6-34 Option 080 6-16 dialog box...
Page 322 Index test port output power removal and replacement Display 5-28 accuracy 3-28 illustrated 7-17 EXT 10 MHz REF IN 5-10 test port output power procedure 7-16 GPIB 5-28 linearity 3-29 troubleshooting HANDLER I/O 5-12 trace noise 3-30 power, source 5-28 accuracy test 3-28 verification...
Page 323 Index part number 6-20 part numbers 6-18 locating removal and replacement in top assembly, without by reference designator illustrated 7-51 Option 080 by type of part removal and replacement illustrated 6-17 miscellaneous analyzer procedure 7-50 part numbers 6-16 part numbers 6-38 6-40 channel R1...
Page 324 Index A24 SOMA 70 A9 fractional-N synthesizer serial bus test 4-35 illustrated 7-45 board dialog box 4-36 procedure 7-44 illustrated 7-19 performing 4-35 A25 test port 1 coupler procedure 7-18 serial number illustrated 7-47 analyzer covers changing procedure 7-46 illustrated installing A26 test port 2 coupler procedure...
Page 325 Index Port 2 strap handle test setup 3-23 analyzer removal and replacement what it verifies 3-19 illustrated 6-35 illustrated 7-45 system motherboard part number 6-34 illustrated 6-13 6-15 removal and replacement subgroup operation 5-26 procedure 7-44 data acquisition and processing part number 6-12 6-14...
Page 326 Index test port 2 coupler tools A18 MA 20 4-48 illustrated 6-21 required for servicing A2 display assembly 4-13 4-17 operation 5-17 service, part numbers 6-38 A20 LODA 4-48 part number 6-20 top assembly, Option 080 A22 switch splitter 4-51 replaceable cables removal and replacement A25 test port 1 coupler...
Page 327 Index measurement system 4-28 upgrade, firmware troubleshooting 4-22 downloading from the internet frequency offset (080) group 4-54 installing using Option 099 frequency offset group (option Option 099 080) 4-54 warm up upgrade, frequency offset mode analyzer receiver group 4-52 Option 016 warning running the receiver display upgrade, transfer switch...

Agilent Technologies PNA Series Service Manual

1 Safety and Regulatory Information

2 General Product Information

3 Tests and Adjustments

4 Troubleshooting

5 Theory of Operation

6 Replaceable Parts

7 Repair and Replacement Procedures

A Error Terms

Appendix A At-A-Glance

B Option Enable Utility

Appendix B At-A-Glance

C Firmware Upgrades

Appendix C At-A-Glance

D Operating System Recovery

Appendix D At-A-Glance

Quick Links

Troubleshooting

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Summary of Contents for Agilent Technologies PNA Series