HP 8517B Manuel d'utilisateur télécharger pdf (Page 70)

5-10

HP 8517B S-Parameter Test Set Manual

Troubleshooting the Test Set

Troubleshooting Procedures

Figure 5-6 The ACTIVE LED Location

If the Self-Test Fails to Run Properly

If the portion of memory holding the self-test program is faulty, the self-test

will not run properly. If any of the following conditions occur, it indicates

thattheA4HP-IBboardislikelytobefaulty.

• All LEDs flash briefly, then turn off

• All LEDs flash briefly and stay on

• The ACTIVE LED turns on too quickly after power on

• The ACTIVE LED does not turn on at all

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HP 8517B 1
S-Parameter Test Set 1
Restricted Rights Legend 2
HP 8517B S-Parameter Test Set 3
Warranty 4
Service and Support 6
Instrument Markings 7
Safety Earth 8
Path Name 9
Contents 11
Contents-2 12
Contents-3 13
Contents-4 14
Contents-5 15
Contents-6 16
Getting Started 17
Test Set Description 18
HP 8517B Test Set Options 20
Verifying Test Set Operation 21
Accessories 26
11900-90003) 27
Recommended Test Equipment 28
Power Level Test Port 29
Installation 31
Initial Inspection 32
Installing the Test Set 34
Connecting the System 36
Replacing O-Rings in 36
Anti-Rotation Clamps 36
Packaging the Test Set 37
Front-Panel Features 39
Rear-Panel Features 40
Multiple Test-Set Connections 43
Measurement Calibration 46
• recalls the cal set 46
≤+17 dBm 47
Calibration 48
Storing Trace 49
Memories 49
Viewing Normalized 49
Parameters 49
{SELECT DEFAULTS} 50
{DEFAULT to MEMORY: 2} 50
Making Operational Checks 51
Performance Verification 52
Using Anti-Rotation Clamps 53
Positioning the thumb-screw 54
Positioning the connector 55
Aligning the thumb-screw 56
Attaching the second clamp 56
Specifications 58
Rear Panel RF Connectors 59
Troubleshooting the Test Set 61
Theory of Operation 62
Troubleshooting Sequence 65
Equipment Needed 66
But Not Supplied 66
A15 Primary Regulator 67
Board Assembly 67
A27 Post-Regulator Board 67
Assembly 67
Troubleshooting Procedures 68
HP 85102 IF 72
Amplifier Test 72
Using the Service Adapter 72
Service Adapter Conclusions 73
Isolating Signal Path 74
Problems 74
TestingPaths5and6 76
HP 8517B, Option 007 80
Unratioed Power Test 80
Finding the Faulty 83
Performance Tests 86
Adjustments 86
Switch/Splitter 89
Replacement 89
Frequency Converter 89
Regulator Board 90
Filter Capacitor 90
Test Port Connector 91
Fan Assembly 92
Power Transformer 92
WARNING 93
Front Panel and 94
Interface Board 94
Test Port Coupler 95
Test Port Attenuator 95
Input Amplifier 96
Buffer Amplifier 96
Post Regulator Board 97
• Telephone 1-(800) 227-8164 100
HP 8517B Replaceable Parts 101
Abbreviation Prefix Multiple 108
Table 7-5 Instrument Fuses 110
*Components not visible 114

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HP 8517B Manuel d'utilisateur Page 70

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