Agilent Technologies 8922S Dokumentacja Pobierz pdf (Strona 60)

6-6

Troubleshooting the Power Supply

Transformer / Power Switch

Use this diagram to verify that the correct voltages are present when the instrument’s

power cord is connected. The table shows the expected values and pin numbers.

1 2 ... 55 56 57 58 59 60 61 62 63 64 65 ... 243 244

Assembly Level Repair 1
HP/Agilent Technologies 1
8922 Series GSM Test Set 1
Contents 10
Localizing the Problem 11
Introduction 12
Power-Up Checks 14
If Power-Up Checks FAILED 15
Where to Go Next 21
Running Diagnostics 27
Loading the RAM Test 33
Verifying Performance 35
HP/Agilent 8922F/H or M/S 37
To Run the Program 38
Notes on Running the Program 38
Configuring the RF Extender 41
Conﬁguring the RF Extender 42
Extending Modules 43
Making Measurements 44
Parallel Bus 49
Serial Bus 50
Keyboard 52
Power Cord Verification 57
Power Cord Veriﬁcation 58
Transformer / Power Switch 60
Where To Go Next 62
Adjustments and Calibration 63
Timebase Adjustments 65
Periodic Calibrations 67
Sum Loop Adjustment Procedure 68
Second Adjustment 69
Final Adjustment 69
Final Check 69
Top and Bottom Cover Removal 73
Inside Protective Covers 74
A1 Front Panel Removal 77
Tools Required 79
A11 Receiver Mixer Removal 80
A12 Pulse Attenuator Removal 82
A21 GPIB Interface Removal 84
A22 Display Removal 86
A23 Input Section Removal 88
A24 Attenuator Removal 89
A28 Power Supply Removal 90
Fan Removal 92
Transformer Removal 94
Replacing a Part 100
Replaceable Parts 100
Firmware Upgrades 123
Service Screen 125
Self-Test Error Messages 129
Module I/O Specifications 131
A2 Audio Analyzer 2 133
Module I/O Speciﬁcations 134
A3 Audio Analyzer 1 135
A4 Modulation Distribution 138
Power Supplies 140
Serial I/O 142
A6 Signaling Source/Analyzer 143
A9 Global Test and Demod 145
A11 Receiver Mixer 149
A13 Output 152
A14 Pulse Driver 154
A15 Reference 156
Hop Control 157
A16 Receiver 162
A18 Spectrum Analyzer 166
A19 Measurement 168
A25 Sum Loop 180
A17, A26 Step Loop 183
A27 DAC/Upconverter 186
A28 Power Supply 188
A33 Hop Controller 189
Instrument Block Diagrams 193
Block Diagram 3 195
Block Diagram 4 195
Block Diagram 5 195
Technical Discussion 199
Block Diagram 1 200
A17 StepLoop B 201
A18 Spectrum Aanalyzer 203
Block Diagram 2 205
A26 Step Loop A 207
A12 Pulse Attenuator 209
A23 Input 209
A24 High Power Attenutor 209
HP/Agilent 8922B Only 211
A37 Sequence Controller 212
Diagnostics Theory 215
AF_DIAGS 217
Audio Analyzer 2 218
RF_DIAGS 219
RF Generator Step Loop 220
Sum Loop 220
Output Section 220
Pulse Attenuator and Drive 221
Input Section 221
RF Analyzer Step Loop 222
Spectrum Analyzer 223
Receiver 223
MS_DIAGS 225
GSM and DCS Diagnostic Tests 226
Interpreting Results 227
Measurement Theory 229
GSM Theory 235
The GSM System 237
Numerics 239

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Agilent Technologies 8922S Dokumentacja Strona 60

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