Agilent Technologies Cell Phone S GSM Manuale Utente Pagina 184
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Screens
Oscilloscope, Trigger Controls
2. Auto/Norm Auto automatically triggers a sweep if a triggering signal is not detected within
~50 ms of the end of the previous sweep in Cont triggering mode.
Norm requires a specific triggering signal before triggering can occur.
3. Controls This field selects the set of oscilloscope controls.
Choices Main
Trigger
Marker
4. Cont/Single This field specifies how measurements are armed to accept a trigger.
If Cont is selected, the oscilloscope is continuously armed to accept a sweep trigger.
If Single is selected, the oscilloscope is armed each time Reset is selected.
5. Level (div) This field sets the trigger level when the Scope Lvl is the trigger source. The
trigger level is indicated by small pointers that appear on each side of the graticule.
The units are vertical divisions.
6. Marker This field displays the signal level at the current marker position. The units-of-
measure for this field are determined by the AF Anl In selection.
See Also Keys: ON/OFF, HI LIMIT, LO LIMIT, REF SET, AVG, Units
7. Meas Reset Selecting Meas Reset will erase any accumulated measurements used for calculating
a final result, and re-start the measurement process for the following functions:
• HI LIMIT
• LO LIMIT
• AVG
See Also Keys: HI LIMIT, LO LIMIT, AVG
8. Pre-Trig This field specifies the number of horizontal divisions to be displayed previous to
the trigger point. The trigger point is indicated by small pointers that appear at the
top and bottom of the graticule.
9. Pos/Neg This field specifies whether triggering occurs on the trigger signal’s positive-going
(Pos), or negative-going (Neg) slope.
- User’s Guide 1
- Contents 3
- Warranty 9
- Limitation of Warranty 9
- Certification 10
- Assistance 10
- Restricted Rights Legend 11
- Statement of Compliance 11
- Sound Emission 12
- Herstellerbescheinigung 12
- Declaration of Conformity 13
- Safety Information 14
- Safety Symbols 16
- Sales and Service Offices 17
- Latin America: 18
- United States: 18
- Description 19
- Typeface Conventions 20
- Using this Chapter 22
- Fuses and Power Cords 23
- Power Cords 24
- Installation Overview 25
- General Information 28
- Making Measurements 29
- Using This Chapter 30
- ACTIVE CELL 33
- SHIFT CELL CONFIG 35
- CELL CNTL ORG CALL 35
- TEST MODE 37
- ORG CALL END CALL 39
- CW GENERATOR 40
- Measurements 41
- CELL CNTL 42
- -27.5 dB -32 dB -51 dB -70 dB 51
- Figure 2-16 59
- MEAS SYNC 60
- Trigger Range For Pulsed RF 61
- SHIFT CELL CNTL 65
- Advanced Features 67
- TION=9C hex (Bit 0 - 157) 70
- About This Chapter 77
- Setting up the Tests 78
- Getting the Right Equipment 79
- Understanding the Tests 82
- Understanding Test Failures 88
- Accuracy (dB) 94
- Power (dBm) 94
- Verifying Performance 106
- Field Types 108
- Bit Error 114
- Bit Error 2 117
- Cell Configuration - GSM 900 122
- Cell Control - Active Cell 133
- 27.9 to +41.0 dBm 135
- Cell Control - Active Cell + 137
- Cell Control - Test Mode 139
- Cell Control - CW Generator 141
- Cell Control 2 143
- RCV CALL 145
- Configure 155
- CW Measurement 160
- Fast Bit Error 162
- I/O Configuration 165
- Measurement Sync 170
- MS Information / Signaling 176
- Oscilloscope, Main Controls 181
- Oscilloscope, Marker Controls 186
- Phase/Freq, Phase Err 197
- Phase/Freq, Data Bits 199
- Pwr Ramp: Rise Edge 201
- Pwr Ramp, Top 2 dB 203
- Pwr Ramp, Fall Edge 205
- Pwr Ramp: Summary 207
- To escape, press 224
- SMS Cell Broadcast 225
- Function Keys 239
- INCR SET 242
- ORG CALL 242
- SHIFT INCR÷10 244
- SHIFT RECALL 245
- Local Keys 246
- Global Keys 247
- Units Keys 248
- Connectors 249
- Timing Diagrams 275
- Messages 285
- Communication Failures 286
- Firmware Error 287
- Sync Status 288
- Protocol Error Messages 289
- Disconnects 292
- Instrument BASIC 297
- Overview 298
- Loading, Storing, and Running 306
- LOCAL SHIFT CANCEL 307
- SHIFT CANCEL 311
- Entering and Editing Programs 312
- Memory Cards 316
- 1 ! FM_TESTS 340
- APPENDIX A 341
- Equipment Required 343
- Agilent 8922M 344
- HP/Agilent 37900D 344
- How to Obtain a Protocol Log 348
- Signal OK 349
- Additional Information 351
- Glossary 365
- Index-10 380
- Index-11 381
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