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HP 8517B manual 84

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Troubleshooting the Test Set

Troubleshooting Procedures

5-24HP 8517B S-Parameter Test Set Manual

Contents

Page Notice Restricted Rights Legend What You’ll Find in This Manual… HP 8517B S-ParameterTest Set Chapters 1 and Chapters 3 and Chapters 5, 6, and Warranty Certification Warranty Assistance Service and Support Safety and Regulatory Information Instrument Markings Safety Earth Ground Before Applying Power Typeface Conventions Page Contents 2.Installation 3.Operating the HP 8517B Test Set 4.Specifications 5.Troubleshooting the Test Set 6.HP 8517B Test Set Replacement Procedures 7.HP 8517B Replaceable Parts Page Getting Started How to Use This Manual Test Set Description Page HP 8517B Test Set Options Verifying Test Set Operation Maintaining Measurement Accuracy Instruments Supported by This Manual Instrument Firmware Compatibility Service and Support Options Available Accessories Accessories Available Table 1-5HP 8517B Test Set Accessories Available (Continued) Recommended Test Equipment Operating and Safety Precautions Operating Precautions Safety Precautions Page 2Installation Operating Environment Storing the Test Set Accessories Supplied Initial Inspection Figure 2-1Accessories Supplied with the HP 8517B Test Set Table 2-1Accessories in Figure Installing the Test Set Into a System Rack Installing the Test Set on a Bench Configuring the Test Set in a System Connecting the System Cables Replacing O-Ringsin Anti-RotationClamps Packaging the Test Set Page Front-PanelFeatures Rear-PanelFeatures Controlling Multiple Test Sets Figure 3-3RF and IF Switching with Two Test Sets Table 3-3RF and IF Switch Settings in Figure 3-3, Above New ADDRESS of Test Set Number Coaxial Switch Port Selected Multiple Test-SetConnections Table 3-4Selecting a Test Set When Multiple Units are Configured Figure 3-4RF and IF Switching with Four Test Sets Table 3-5Coaxial Switch Settings for Figure 3-4, Above New ADDRESS with Switch #1 with Switch #2 Measurement Calibration Measuring High-PowerDevices with Option Changing Signal Path States After System Calibration Changing the Test Port Attenuators Storing Trace Memories Viewing Normalized Parameters Page Making Operational Checks Performance Verification Using Anti-RotationClamps Attach the first clamp Positioning the thumb-screw Positioning the connector Aligning the thumb-screw Attaching the second clamp Page 4Specifications Mechanical Specifications Supplemental Characteristics Table 4-2HP 8510/HP 8517B Supplemental Characteristics (Continued) Page Troubleshooting the Test Set Theory of Operation The RF Source Power • The Reference Signal Path The Test Signal Path The S11 and S21 Measurements The Sampler Control Switching The LO Signal Control Troubleshooting Sequence Equipment Needed But Not Supplied Troubleshooting Procedures A15 Primary Regulator Board Assembly A27 Post-RegulatorBoard (Option 007, Only) HP-IB Address Switch Fuse Location Self-Test Indicators If the Self-TestFails to Run Properly Page HP 85102 IF Amplifier Test Using the Service Adapter Service Adapter Conclusions Unratioed Power Test Isolating Signal Path Problems Testing Signal Paths Page Testing Paths 5 and Page Page Page HP 8517B, Option Page Page Finding the Faulty Sample Diagnostics Page HP 8517B Test Set Replacement Procedures Performance Tests Adjustments Equipment Needed But Not Supplied Page Initial Precautions Switch/Splitter Replacement Assembly Replacement Procedures A18 Switch/Splitter Assembly Frequency Converter Replacement A14, A10 to A13 Frequency Converter Assembly Regulator Board Replacement Filter Capacitor Replacement A15 Regulator Board Assembly C1 to C4 Filter Capacitors Test Port Connector Replacement 2.4 mm Test Port Connectors Fan Assembly Replacement B1 Fan Assembly Power Transformer T1 Power Transformer Replacement this procedure. Disconnect the ac power cord before starting Figure 6-4Wire Connections to FL1 Line Module O-RingReplacement Anti-RotationClamp O-RingReplacement O-Ring Front Panel and Interface Board Bias Tees Replacement A7 and A9 Bias Tees Test Port Coupler Replacement A6 and A8 Test Port Couplers Test Port Attenuator A16 or A17 Port Attenuators Input Amplifier A22 Input Amplifier Assembly Buffer Amplifier A23 to A26 Buffer Amplifiers Post Regulator Board Replacement A27 Post Regulator Board Assembly Page Introduction Rebuilt-ExchangeAssemblies Replaceable Parts List Ordering Information To Order Parts . . . . Fast Reference Designation Abbreviations (Continued) Table 7-2Manufacturer Names and Addresses Table 7-3Standard Abbreviations Table 7-3Standard Abbreviations (Continued) Page Page Page Page Table 7-4Multipliers, Abbreviation and Description Abbreviation Prefix Multiple Figure 7-1Power Cable and Plug Part Numbers Table 7-5Instrument Fuses Fuse Name Location (part number) *Hewlett-Packardpays postage on boxes mailed in the U.S.A Figure 7-2The Low Cost Rebuilt-ExchangeProcedure Table 7-6Major Assembly Reference Designator and Parts Information Description Page Table 7-7 Semi-RigidCable Assemblies in the Standard HP 8517B Test Set Table 7-8Flexible Cable Assemblies in the Standard HP 8517B Test Set Page Table 7-9Miscellaneous Parts, Front Panel HP 8517B Test Set Table 7-10Test Port Connector Assembly Components Table 7-11Miscellaneous Parts, Rear Panel HP 8517B Test Set Page Page Table 7-12Miscellaneous Parts, Top Internal View Table 7-13Miscellaneous Parts, Motherboard (Continued) Table 7-14Parts Unique to HP 8517B Option 001 Test Set Page Table 7-15Parts Unique to HP 8417B Option 002 Test Set Table 7-16Parts Unique to HP 8517B Option 004 Test Set Table 7-17Parts Unique to HP 8517B Option 007 Test Set Table 7-17Parts Unique to HP 8517B Option 007 Test Set (Continued) Table 7-18Parts Unique to Option 002 “plus” Option Table 7-19Parts Unique to Option 004 “plus” Option Table 7-20Instrument Chassis Replaceable Parts Table 7-20Instrument Chassis Replaceable Parts (Continued) Index

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