HP 8591C Instrukcja Użytkownika Strona 184
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Making Basic Measurements Using Spectrum Analyzer Mode
Measuring low-level Signals Using Attenuation, Video Bandwidth, and Video Averaging
NOTE
The total power of all input signals at the spectrum analyzer input must not exceed the maximum
power level for the spectrum analyzer.
1. Connect an antenna to the spectrum analyzer input. Press
(PRESET).
2. Reduce the frequency range to view a low-level signal of interest. For
example, narrow the frequency span from 88 MHz to 108 MHz by pressing
(FREQUENCY), START FREQ , 88
m,
STOP FREQ , 108
(MHz_).
3. Place a marker on the low-level signal of interest. Press
IIVIKR]
and use the
knob to position the marker at the signal’s peak.
4. Place the signal at center frequency by pressing
(MKR)
then
MARKER
-CF.
5. Reduce the span to 10 MHz. Press
(SPAN),
and then use the step-down key
(m).
See Figure 4-15.
FULL
SPAN
Figure 4-15. low-level Signal
4-23
- User’s Guide 1
- Assistance 6
- Safety Notes 7
- General Safety Considerations 8
- Cable TV Analyzer 9
- Documentation Description 9
- Contents 12
- Preparing For Use 22
- More 2 of 4, and CAL TRK 25
- Inspection 26
- Requirements 28
- 81x-5182 33
- 3. Press 34
- cable shipped with the cable 37
- TV analyzer 37
- Printing 38
- Plotting 38
- Press @%FiQ, More 39
- Printing or Plotting 43
- Equipment 46
- Electrostatic 60
- Discharge 60
- Getting Started 62
- Front-Panel 64
- Features 64
- Rear-Panel 68
- Controls 71
- Fine-Focus Control 73
- Annotation 74
- PEAK SEARCH] or press 81
- Procedure to Change the 90
- Information 92
- Overwritten 105
- Press LOAD FILE 117
- (PRESET) 119
- Card -+ Trace AMP COR 124
- Limit-Line 125
- Functions 125
- FREQUENCY], 300 126
- Using limit-line Functions 128
- Selecting the Type of 132
- Limit-Line Table 132
- Selecting the Limit-Line 133
- Table Format 133
- Using Limit-Line Functions 137
- Selecting the Segment 138
- Limit4ine 140
- Functions 140
- FREQUENCY] 300 MHz 141
- I IHZ SWP 30.0 145
- FREQUENCY), START 145
- Amplitude-Correction 153
- 14:85:24 154
- AUG 18 154
- External 157
- Keyboard 157
- [BACKSPACE) 158
- External Keyboard 159
- Installation 160
- To Enter a Screen Title 160
- Making Basic 162
- Measurements Using 162
- Spectrum Analyzer Mode 162
- CFREQUENCY) 165
- FREQUENCY) 167
- 300 (MHz), then 167
- PEAK SEARCH_) 168
- Resolution Bandwidth 169
- FREQUENCY] 300 (MHz) 170
- SEARCH].) 170
- FREQUENCY], 300 (MHz) 172
- PEAK SEARCH) 174
- (MHz) 175
- FREQUENCY], 100 177
- FREQUENCY), START FREQ , 88 184
- AUTO COUPLE) and 185
- FREQUENCY), 400 192
- I I I I I I 194
- Third-Order 195
- Intermodulation 195
- Distortion 195
- SEARCH] 196
- Making Measurements 201
- Using Spectrum Analyzer 201
- (MEAS~USER) 203
- Figure 5-1. FFT Annotation 204
- AMPLITUDE] and 206
- FREQUENCY) and adjust the 207
- Analyzer 208
- Stimulus-Response 212
- Measurements 212
- SPECTRUM ANALYZER 215
- ATN AUTO 216
- Refer to 216
- Figure 5-9. Normalized Trace 221
- SEARCH) to 223
- Time-Gate Utility Display 228
- Gate Delay 239
- Signal Delay 239
- ENTER 50.08 MHz 250
- (FFEZT] 256
- N dB Bandwidth Measurement 260
- N dB Bandwidth Measurement 261
- Adjacent Channel Power 271
- Adjacent Channel Power Graph 272
- Measurement 274
- Channel Power 275
- Key Descriptions 277
- Diagnostic 280
- Service Diagnostic 281
- A. (Vertical lines on the 285
- A. (Vertical lines on 287
- Front-Panel Key Access 291
- (jD’spLAy-1 291
- AUTO COUPLE] 293
- AUTO COUPLE) 293
- CATALOG 0% 308
- 981861 AT 309
- COUPLE) or 311
- AMPLITUDE] 326
- Spectrum Analyzer Mode Key 328
- Oescriptions 328
- PEAK SEARCH] 333
- CAT ITEM 334
- Mode Functions 337
- this function is disabled 343
- FREQUENCY] 351
- Coupling, UPDATE TIMEFREQ 363
- SEARCH] 365
- FREQUENCY) then 366
- PEAK SEARCH) and 367
- PEAK SEARCH), MARKER A , and 367
- ZOOM the first 384
- Descrrptions 403
- [MEAS/USER) 409
- (MKRFCTN) 411
- AUTO COUPLE) or 416
- TRACKING 424
- [MEAS~USER) 426
- Key Menus 433
- If You Have a Problem 450
- More 1 of 4 455
- FREQUENCY), -37 458
- Messages 463
- AUTO COUPLE), AUTO ALL (U) 473
- Options and Accessories 478
- Accessories 484
- Glossary 488
- FM span, 6-74 525
- Index- 10 526
- Index- 11 527
- Index- 12 528
- Index- 13 529
- Index- 14 530
- Index- 15 531
- Index- 16 532
- Index- 17 533
- Index- 18 534
- Index- 19 535
- Index-20 536
- Index-22 538
- Index-23 539
- Index-24 540
- Index-25 541
- Index-26 542
- Index-27 543
- Index-28 544
- Index-29 545
- Index-30 546
- Index-32 548
- Index-33 549
- Index-34 550
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