Agilent Technologies N9344C Manual de servicio Pagina 173
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Command Reference 5
Programmer’s Guide 165
Demodulation Option Subsystem
The Demodulation Option Subsystem provides you the SCPI command
reference for the demodulation function. Use the command
:INSTrument MA to access this subsystem.
Option AMA is required to perform AM and FM demodulation
analysis, and option DMA is required to perform ASK and FSK
demodulation analysis
Switch Demodulation Mode
:INSTrument:MEASure AM|FM|ASK|FSK
:INSTrument:MEASure?
After access to demodulation analysis mode, use this command to
switch the 4 modulaes in demodulation mode.
Range: AM, FM, ASK,FSK
Example: :INSTrument:MEASure AM
Key access: Mode > Modulation Analysis > AM
Carrier Frequency
[:SENSe]:FREQuency:CARRier <freq>
[:SENSe]:FREQuency:CARRier?
This command sets the carrier frequency of the demodulation analysis.
Range: 2.5 MHz to 7 GHz
Example: :FREQuency:CARRier 1 GHZ
Key access: Freq > Carrier Freq
- Agilent 1
- N9342C/43C/44C 1
- Handheld 1
- Spectrum Analyzer 1
- In This Guide… 3
- Programmer’s Guide 4
- Contents 5
- Getting Started 9
- ® II or higher required 10
- 8 Programmer’s Guide 16
- 1 Getting Started 16
- Programming Fundamentals 17
- Overview 18
- Command Categories 20
- Command Syntax 21
- Command Example 22
- Creating Valid Commands 23
- Program and Response Messages 24
- Parameters in Commands 25
- Variable Parameters 26
- Status Registers 27
- Access the status registers 29
- Status Register Examples 32
- Status Register System 33
- The Status Byte Register 34
- 0 1 2 3 4 5 6 7 36
- 3 4 5 6 7 36
- Programming Example 39
- Example Program 42
- Opening a Session 43
- Device Sessions 44
- Addressing a Session 46
- Closing a Session 46
- Checking the USB Connection 47
- 40 Programmer’s Guide 48
- 4 Programming Example 48
- Programming Example 4 49
- Programmer’s Guide 41 49
- 42 Programmer’s Guide 50
- Programmer’s Guide 43 51
- 44 Programmer’s Guide 52
- Programmer’s Guide 45 53
- 46 Programmer’s Guide 54
- Programmer’s Guide 47 55
- 48 Programmer’s Guide 56
- Command Reference 57
- IEEE Common Commands 58
- Identification Query 59
- Operation Complete Query 59
- Service Request Enable 60
- Status Byte Query 60
- Self Test Query 61
- Wait-to-Continue 61
- System Subsystem 62
- Set System Date 63
- System Time Zone Offset 63
- Run Lasted Time Query 63
- Language Type 63
- Enable Option 64
- Disable Option 64
- Installed Options Query 64
- System Error 64
- Calibrate Time Base by GPS 65
- BNC Port Input Type Setting 65
- Probe Power 66
- IP Config Host Name 66
- IP Address 66
- IP Address Assignment 66
- Gateway Setting 67
- Subnet Mask 67
- IP Config Apply 67
- Erase Memory 67
- System Preset 68
- Factory Default 68
- GPS State 68
- Sync to GPS Status 68
- GPS Information 69
- Timed Power On 69
- Timed Power On Repeat Mode 69
- Time Power On Time 69
- Time Power On Date 70
- Timed Power Off State 70
- Timed Power Off Repeat Mode 70
- Time Power Off Time 70
- Time Power Off Date 71
- Power On Type 71
- Preset Type 71
- Save User Preset 71
- DC Power In Type 72
- Low Frequency Channel Status 72
- Power Reset 72
- Power Off 72
- Speaker Volume 72
- Speaker Volume Flag 73
- Hardware Message 73
- Software Message 73
- System Message 73
- System Time Sync to GPS 73
- Memory Subsystem 74
- Move Data to File 75
- Delete a File 75
- Load a File 75
- Store a File 75
- Store Peak Table to CSV File 76
- Create A New Directory 76
- Delete A Directory 76
- Rename A Directory or File 76
- Load Correction File 77
- Instrument Subsystem 78
- Sense Subsystem 80
- Stop Frequency 81
- Center Frequency Step 81
- Center Frequency Channel Step 81
- Frequency Unit 81
- Frequency Offset 82
- Frequency Span 82
- Span Channel 82
- Full Frequency Span 83
- Zero Span 83
- Last Frequency Span 83
- Auto Tune 83
- Base Band Channel Switch 83
- Amplitude Subsection 84
- Input Port Preamplifer 85
- Preamp On/Off 85
- Scale/DIV 85
- Scale Type 85
- Hi-Sensitive 86
- More > Hi-sensitivity 86
- Reference Offset Level 86
- Correction Off 86
- Correction Apply State 87
- Set Correction X state Off 87
- Correction Antenna Unit State 87
- Read Correction X Data 87
- Current Correction Select 88
- Input Impedance selection 88
- PSD Mode State 88
- Bandwidth Subsection 89
- Auto Video Bandwidth State 90
- Trace Subsection 91
- Subtract Trace 92
- Query Trace Data 92
- Trace Math B y 92
- Trace Math O ff 92
- Trace Format 92
- Detector Subsection 93
- Average Subsection 94
- Sweep Subsection 95
- Gated Sweep State 96
- Gate View 96
- Gate View Sweep Time 96
- Gate Delay 97
- Gate Length 97
- Gate Source 97
- Display Subsection 98
- Calculate Subsystem 99
- Limit Line Y-axis Value 100
- Limit Line X-axis Value 100
- Limit State 100
- Query Current Limits Result 100
- Limit Beep State 101
- Define Limits Values 101
- Delete Limits Values 101
- Delete All Limits Data 101
- Query Limits Result 101
- Set the limits Margin Value 102
- Set Limits Margin State 102
- Marker Subsection 103
- Marker Function 104
- Peak Search 104
- :CALCu 104
- Next Peak Search 104
- Marker Peak Left/Right Search 105
- Marker Mode 105
- Peak Excursion 105
- Peak Search Type 106
- Peak Threshold 106
- Peak to Peak Delta Markers 106
- Marker to Center 107
- Marker to Start Frequency 107
- Marker to Stop Frequency 107
- Marker On/Off 108
- Marker to Trace 108
- Marker X value 108
- Marker Readout X Value 108
- Query Marker Readout: Y Value 109
- Marker Demod Type 109
- Marker Demod Speaker Volume 109
- Marker Demod Delay Time 109
- Initiate Subsystem 110
- Initiate a Single Sweep 111
- Trigger Subsystem 112
- Video Trigger Level Amplitude 113
- External Trigger Slope 113
- RF Burst Level 113
- RF Burst Trigger Slope 114
- Periodic Timer Period 114
- Periodic Timer Offset 114
- Synchronization Source 115
- Power Measurement Subsystem 116
- Adjacent Channel State 117
- Adjacent Channel Bandwidth 117
- Channel Space 118
- CHP Subsection 119
- Integration BW 120
- Channel Span 120
- Channel Span Power 120
- Channel Power Display Mode 120
- Channel Power Auto Range 121
- Channel Power Range Top 121
- Channel Power Range Bottom 121
- OBW Subsection 123
- Set dBc method of OBW 124
- OBW Span 124
- OBW Max Hold State 124
- Query OBW and Centroid Result 124
- SEM Subsection 125
- SEM Resolution Bandwidth 126
- SEM Total Power Reference 126
- SEM Channel Span 127
- SEM Center Frequency 127
- SEM Marker State 127
- SEM Marker X 127
- Query SEM Marker Y Value 128
- SEM Marker All Off 128
- SEM Offset Resolution BW 128
- SEM Offset Start Freq 129
- SEM Offset Stop Freq 129
- SEM Offset Sweep Time 130
- SEM Offset Abs StartAmpt 130
- SEM Offset Rel StartAmpt 131
- SEM Offset Abs Stop Ampt 131
- SEM Offset Rel StopAmpt 131
- SEM Offset Fail Mask 132
- SEM Meas Type 132
- SEM Lower Offset Fail Flag 132
- SEM Lower Offset Power 132
- Query SEM Upper Offset Power 133
- SEM Fail Setting Log 133
- SEM Fail Setting Hold 134
- SEM Fail Setting Beep 134
- Spectrogram State 135
- Spec Update Interval 135
- Spectrogram Palette 136
- Spectrogram Display Mode 136
- Spectrogram Marker State 136
- Spectrogram Display Frequency 136
- Spectrogram Marker Time 137
- Spectrogram Time Save State 139
- Spectrogram Start Save 139
- Spectrogram Stop Save 139
- Spectrogram Save Start Date 140
- Spectrogram Save Start Time 140
- Spectrogram Save Stop Date 140
- Spectrogram Save Stop Time 140
- Spectrogram Save File Type 141
- Spectrogram Save File Size 141
- Spectrogram Marker Y Value 141
- CAT Measurement Type 142
- CAT Calibration Type 142
- CAT IIM State 143
- CAT Display Type 143
- CAT Set Cable Type 143
- CAT Select A Cable 144
- CAT Cable Attenuation 144
- CAT Cable Velocity Factor 144
- CAT Windows Select 145
- CAT Start Frequency 145
- CAT Stop Frequency 145
- CAT Center Frequency 146
- CAT Frequency Span 146
- CAT Distance Start 146
- CAT Distance Stop 146
- CAT Distance Unit 147
- CAT Amplitude Auto Scale 147
- CAT Save Trace Data to Memory 148
- CAT Trace Display Type 148
- CAT Trace Math Type 149
- CAT Trace Average Number 149
- CAT Trace Data Format 149
- CAT Trace Data Query 150
- CAT Sweep Continuos State 150
- CAT Single Sweep 150
- CAT Marker All Off 150
- CAT Marker Mode 150
- CAT Set Marker X axis Value 151
- CAT Query Marker Y axis Value 151
- CAT Marker Peak Search 152
- CAT Valley Search 152
- CAT Limit Beep State 152
- CAT Limit Type 153
- CAT Limit Line State 153
- CAT Limit Line Value 153
- CAT Limit State 153
- CAT Get Limits Result 154
- CAT Define Limit Value 154
- CAT Delete Limit Data 154
- Sweep Mode 156
- Top N Nu mb er 156
- Bottom N Number 157
- Max Hold State 157
- Max Hold Dwell Time 157
- Mini Hold State 157
- Min Hold Dwell Time 158
- Average State 158
- Average Count Number 158
- Average Mode 158
- Measurement Interval State 159
- Measurement Interval Type 159
- Measurement Interval Time 159
- Measurement Interval Distance 159
- Top N/Bottom N Search Rule 160
- Top C yc le 160
- Bottom Cycle 161
- Scan Start/Stop State Switch 161
- Delete Channel For List Sweep 163
- Standard 167
- Display Switch 169
- Display Mode 169
- Display Threshold State 170
- Display Threshold Value 170
- Limit Value 170
- Limit Type 171
- Display Sort Type 171
- Display Sort Order 171
- Logging State 171
- Logging File Type 172
- Query Result 172
- Demodulation Option Subsystem 173
- Carrier Frequency Step 174
- Auto Carrier Frequency State 174
- Attenuation 174
- Single Sweep 175
- Sweep State 175
- External Gain 175
- AM Demodulation Subsection 176
- AM Average Count 177
- AM Detector 177
- AM Detector PeakHold 178
- AM IF Bandwidth 178
- AM Equal Low Pass Filter 179
- AM Limit State 179
- AM Carrier Power Upper Limit 179
- AM Depth Upper Limit 180
- AM Depth Lower Limit 180
- AM X Scale/DIV 181
- AM X Reference Value 181
- AM X Reference Position 181
- AM X Scale Coupling State 182
- AM Y Reference Value 182
- AM Y Scale/DIV 182
- FM Demodulation Subsection 183
- Query FM Modulation Rate 184
- Query FM Frequency Deviation 184
- FM Average Count 184
- FM Average Count State 184
- FM Detector 185
- FM Detector PeakHold 185
- FM IF Bandwidth 185
- FM Equal Low Pass Filter 186
- FM Limit State 186
- FM Carrier Power Upper Limit 186
- FM demodulation analysis 187
- FM X Scale/DIV 188
- FM X Reference Value 188
- FM X Reference Position 188
- FM X Scale Coupling State 189
- FM Y Reference Value 189
- FM Y Scale/DIV 189
- ASK Demodulation Subsection 190
- ASK Average Count 191
- ASK Symbol Rate 191
- ASK Measurement Filter 191
- ASK Reference Filter 192
- ASK Filter Symbols 192
- ASK Alpha/BbT 192
- ASK Measurement Length 193
- ASK Trigger Type 193
- ASK RF Trigger Level 193
- ASK External Trigger Type 194
- ASK Trigger Delay Time 194
- ASK Limit State 194
- ASK Carrier Power Upper Limit 195
- ASK Depth Upper Limit 195
- ASK Depth Lower Limit 195
- ASK View Type 196
- ASK X Scale/DIV 196
- ASK X Reference Value 197
- ASK X Reference Position 197
- ASK X Scale Coupling State 197
- ASK Y Reference Value 198
- ASK Y Scale/DIV 198
- ASK Y Reference Position 198
- FSK Demodulation Subsection 199
- FSK Symbol Rate 200
- FSK Measurement Filter 200
- FSK Reference Filter 200
- FSK Filter Symbols 201
- FSK Alpha/BbT 201
- FSK Measurement Length 201
- FSK Trigger Type 202
- FSK RF Trigger Level 202
- FSK External Trigger Type 202
- FSK Trigger Delay Time 203
- FSK Limit State 203
- FSK Carrier Power Upper Limit 203
- Range: -2 MHz to 2 MHz 204
- FSK View Type 205
- FSK X Scale/DIV 205
- FSK X Reference Value 205
- FSK X Reference Position 206
- FSK X Scale Coupling State 206
- FSK Y Reference Value 206
- FSK Y Scale/DIV 207
- FSK Y Reference Position 207
- FSK Y Scale Coupling State 207
- Read FSK Trace Data 208
- Power Meter Option Subsystem 209
- Switch Power Range 210
- Set Power Auto Range State 210
- Set Power Meter Offset State 211
- Set Power Meter Offset Value 211
- Set Power Meter Average State 211
- Set Trace X Start Time 213
- Set Trace X Scale Time 214
- Set Trace Y Max Value 214
- Set Trace Y Scale Value 214
- Set Gate Start Time 214
- Set Gate Length Time 215
- Set Display Resolution 215
- Set Display Auto Range State 215
- Set Chart View to Home 216
- Set Chart View to End 216
- Set Chart View to Previous 217
- Set Chart View to Next 217
- Set Limit State 217
- Set Limit Upper Value 217
- Set Limit Lower Value 218
- Set Limit Beep 218
- Query Limit Fail Result 218
- Query Limit Failure Count 218
- Set Gate Measurement Type 219
- Set Trigger Type 219
- Set Trigger Source 219
- Set Trigger Level 220
- Normalization Reference Level 223
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