Agilent Technologies 8935 Series Spezifikationen Seite 287
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286 Chapter 10
Block Diagrams
RF Input/Output Section
RF Input/Output Section
RF Power Measurement
An RF power measurement can only be made by supplying a signal to
the RF IN/OUT port of the Test Set. See Figure 10-2 on page 287. A
power splitter then splits the signal between an RF analysis path and a
power measurement path. The power detector has a direct path to the
A2A36 Receive DSP where average power measurements are made.
There’s also a diode peak detector to provide a peak power
measurement through the A2A33 Measurement assembly.
Accuracy is insured by factory-generated calibration data which is
stored in CAL ROM. The A2A200 100W-attenuator also has calibration
data which affects RF power measurements.
Input Gain Control
Step attenuators in the A2A130 Input/Output Section are switched in
and out, manually or automatically. This keeps the input level within
an optimum range for the mixers, IF amplifiers, and detectors.
- Test Set 1
- Contents 10
- General Information 11
- 12 Chapter 1 12
- Safety Considerations 13
- 14 Chapter 1 14
- Chapter 1 15 15
- 16 Chapter 1 16
- Product Markings 17
- Certification 18
- Manufacturer’s Address: 19
- Commercial Products 20
- Chapter 1 21 21
- Assistance 22
- Power Cables 23
- Earth Ground 25
- JIS C 8303, 100 V 26
- °/Straight 27
- ATTENTION 29
- Documentation 30
- Chapter 1 31 31
- Which Document is Required? 32
- Trademark Acknowledgements 33
- 34 Chapter 1 34
- Product Information 35
- Instrument Description 36
- Chapter 2 37 37
- Instrument Assemblies 38
- Upgrades 41
- Load the DSP Firmware 42
- CDMA 2000 Enable Process 42
- Checking Firmware Version 43
- SERVICE Screen 44
- Repair Process 45
- 46 Chapter 2 46
- Service Information 47
- Troubleshooting 48
- 48 Chapter 3 49
- Chapter 3 49 50
- 50 Chapter 3 51
- To Start Troubleshooting 52
- Spare Fuse 53
- Line Fuse 53
- Chapter 3 53 54
- 500mV/div 55
- 500µs/div 55
- Controller 56
- Reading LED Codes 57
- Chapter 3 57 58
- = rapid blink 60
- = steady on or slow blink 60
- Then the failure is 61
- LED Legend 61
- Chapter 3 61 62
- Chapter 3 63 64
- Chapter 3 65 66
- Functional Diagnostics Menu 67
- Chapter 3 67 68
- AF Diagnostics 69
- SERVICE MENU Screen 70
- RF Diagnostics 71
- CDMA Diagnostics 73
- Warning/Error Messages 74
- Time-outs 75
- OOLs.eps 79
- Chapter 3 79 80
- 80 Chapter 3 81
- Chapter 3 81 82
- Further Isolating RF Failures 83
- 86 Chapter 3 87
- Service Screen 87
- Preset key 87
- Field Names and Descriptions 88
- 88 Chapter 3 89
- Chapter 3 89 90
- 90 Chapter 3 91
- Product Verification 91
- Chapter 3 91 92
- 92 Chapter 3 93
- Hardware Maintenance 95
- Cleaning 96
- Functionality 96
- Integrity 97
- Reset and GFI-Test Buttons 99
- PC Card Battery 100
- 100 Chapter 4 101
- Preventative Maintenance 101
- Maintenance Procedures 101
- Disassembly 102
- Service Tools 103
- Assembly Replacements 104
- External Covers 105
- Internal Covers 106
- 106 Chapter 5 107
- Chapter 5 107 108
- Cover-Bottom 109
- Screws (x27) 109
- Chapter 5 109 110
- A1 Disassembly 111
- Chapter 5 111 112
- A2 Disassembly 113
- Chapter 5 113 114
- 114 Chapter 5 115
- Chapter 5 115 116
- PCMCIA Assembly 117
- Control Interface Assembly 118
- Assemblies 119
- Chapter 5 119 120
- Ref) Assemblies 121
- Chapter 5 121 122
- Attenuator Assembly 123
- Chapter 5 123 124
- Motherboard Assembly 125
- Chapter 5 125 126
- A3 Disassembly 127
- Chapter 5 127 128
- Power Supply Assembly 129
- Rear Sub-Panel 129
- Chapter 5 129 130
- Wire/Cable Information 131
- 134 Chapter 5 135
- Replaceable Parts 136
- Direct Parts Ordering 137
- Parts Identification 138
- Covers and Chassis Parts 139
- A1 Assemblies 140
- A2 Assemblies 141
- AUDIO #1, A2A80 Assembly 142
- Figure 6-6 143
- Figure 6-7 143
- Figure 6-8 144
- Figure 6-9 145
- Figure 6-10 146
- Motherboard and Sub Frame 147
- Figure 6-11 147
- A3 Rear Panel Assembly 148
- Cable Assemblies 149
- Chapter 6 149 150
- Parts List 151
- Chapter 6 151 152
- Table 6-1 152
- 152 Chapter 6 153
- Chapter 6 153 154
- 154 Chapter 6 155
- Chapter 6 155 156
- 156 Chapter 6 157
- Periodic Adjustments 158
- Equipment 161
- 162 Chapter 7 163
- Calibration Programs 164
- 164 Chapter 7 165
- Chapter 7 165 166
- Voltmeter References 167
- +REF -REF 168
- Measurement Board Assembly 168
- Audio Analyzer 1 Offset 169
- Setting the Timebase Latches 170
- 170 Chapter 7 171
- Chapter 7 171 172
- 172 Chapter 7 173
- Performance Tests 174
- Procedure and Equipment 175
- RF Generator FM Distortion 179
- Performance Test 1 179
- Procedure 180
- 180 Chapter 8 181
- RF Generator FM Accuracy 182
- Performance Test 2 182
- Chapter 8 183 184
- RF Generator FM Flatness 185
- Performance Test 3 185
- Chapter 8 185 186
- 186 Chapter 8 187
- RF Generator Residual FM 188
- Performance Test 4 188
- Chapter 8 189 190
- DUPLEX OUT 191
- INPUT 50Ω 191
- RF IN/OUT 191
- −10 dBm 192
- Procedure 2 193
- Chapter 8 193 194
- −70.1 dB 195
- −52.6 dB 195
- −73.2 dB the 195
- AUDIO OUT 198
- AUDIO IN HI 202
- AF Analyzer Residual Noise 203
- Performance Test 13 203
- Chapter 8 207 208
- Chapter 8 209 210
- RF Analyzer FM Accuracy 212
- Performance Test 20 212
- 212 Chapter 8 213
- RF Analyzer FM Distortion 214
- Performance Test 21 214
- 214 Chapter 8 215
- RF Analyzer FM Bandwidth 216
- Performance Test 22 216
- 216 Chapter 8 217
- LOW RESIDUAL OUTPUT 218
- 218 Chapter 8 219
- 10 MHz OUTPUT 220
- 222 Chapter 8 223
- 226 Chapter 8 227
- Tune Freq to 881.32 MHz 227
- 228 Chapter 8 229
- Preset on the Test Set 229
- 232 Chapter 8 233
- Performance Test Records 234
- Performance Test 1 Record 235
- Performance Test 2 Record 237
- Performance Test 3 Record 239
- −10 2000 50 0.2 −1 1 240
- −10 2000 50 2 −11 240
- −10 2000 50 10 −1 1 240
- −10 2000 50 25 −1 1 240
- Performance Test 4 Record 241
- RF Generator Level Accuracy 243
- Performance Test 5 Record 243
- Performance Test 6 Record 251
- −12 2000 3rd −25.000 254
- Performance Test 7 Record 255
- Performance Test 8 Record 257
- Performance Test 9 Record 259
- Performance Test 10 Record 260
- Performance Test 11 Record 262
- AF Analyzer AC Level Accuracy 263
- Performance Test 12 Record 263
- Performance Test 13 Record 264
- Performance Test 14 Record 265
- AF Analyzer DC Level Accuracy 266
- Performance Test 15 Record 266
- Performance Test 16 Record 267
- Performance Test 17 Record 268
- Performance Test 18 Record 269
- RF Analyzer Level Accuracy 270
- Performance Test 19 Record 270
- Performance Test 20 Record 272
- Performance Test 21 Record 273
- Performance Test 22 Record 274
- RF Analyzer Residual FM 275
- Performance Test 23 Record 275
- Performance Test 24 Record 276
- Performance Test 25 Record 278
- Performance Test 26 Record 279
- Performance Test 27 Record 280
- Performance Test 28 Record 281
- Performance Test 29 Record 282
- 282 Chapter 9 283
- Block Diagrams 284
- Introduction 285
- Reference 286
- RF Input/Output Section 287
- Chapter 10 287 288
- RF Analyzer Section 289
- Spectrum Analysis 290
- 290 Chapter 10 291
- MOTHERBOARDP/O 292
- MOTHERBOARD A2A1P/O 293
- MOTHERBOARDP/O A2A1 294
- Audio Analyzer Section 295
- Chapter 10 295 296
- 296 Chapter 10 297
- MEASUREMENT ASSY 298
- 298 Chapter 10 299
- CDMA Analyzer Section 300
- LO IF Conversion 301
- RECEIVE DSP ASSEMBLY, A2A36 302
- CDMA Generator Section 303
- Chapter 10 303 304
- 304 Chapter 10 305
- Audio Generator Section 306
- 306 Chapter 10 307
- Chapter 10 307 308
- RF Generator Section 309
- Level Control 310
- Modulation 310
- I/Q MODULATOR, A2A120 312
- UPCONVERTER ASSEMBLY, A2A110 314
- Reference/Regulator Section 315
- REFERENCE ASSEMBLY, A2A23 316
- 316 Chapter 10 317
- Instrument Control Section 318
- MEMORY/SBRC ASSEMBLY, A2A30 319
- Chapter 10 319 320
- 320 Chapter 10 321
- Error Messages 322
- 322 Appendix A 323
- Appendix A 323 324
- 324 Appendix A 325
- Diagnostics Messages 326
- 326 Appendix A 327
- Memory Card Checksum Error 328
- Memory Card Read Error 328
- Memory Erase Error 328
- Memory Write Error 328
- Programming Voltage Error 329
- ROM Checksum Error 329
- Appendix A 329 330
- Text Only Error Messages 331
- Appendix A 331 332
- IBASIC Error Messages 333
- GPIB Error Messages 334
- 334 Appendix A 335
- Appendix A 335 336
- 336 Appendix A 337
- Index 337 338
- 338 Index 339
- Index 339 340
- 340 Index 341
- Index 341 342
- 342 Index 343
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