Fluke PM-3370B Manual de usuario Pagina 59
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3 - 40 USING THE COMBISCOPE INSTRUMENTS
3.7.2 Input filtering
The INPut:FILTer command allows you to turn the common low-pass filter
(bandwidth limiter) on or off for all input channels at the same time. The cutoff
frequency is fixed at 20 MHz. After a
*
RST command, the filter is turned off.
PROGRAM EXAMPLE:
CALL Send(0, 8, "INPut:FILTer ON", 1) ’
Turns the filter on
CALL Send(0, 8, "INPut:FILTer:FREQuency?", 1) ’
Requests for the filter frequency
response$ = " "
CALL Receive(0, 8, response$, 256) ’
Reads the filter frequency
PRINT "Filter freq. = "; response$ ’
Prints: Filter freq. = 2.00E+07
3.7.3 Input impedance
The INPut<n>:IMPedance command allows you to specify the input impedance
low (50
Ω) or high (1 MΩ) for each input channel separately. After a
*
RST
command, the impedance of each input channel is 1 M
Ω.
PROGRAM EXAMPLE:
CALL Send(0, 8, "INPut4:IMPedance 50", 1) ’
Sets channel 4 impedance at 50
Ω
3.7.4 Input polarity
The INPut<n>:POLarity command allows you to set the polarity of the signal on
the input channel 2 and 4. The polarity can be set to NORMal (default) or INVerted
(inverted signal).
PROGRAM EXAMPLE:
CALL Send(0, 8, "INPut2:POLarity NORMal", 1) ’
Sets INV CH2 off
CALL Send(0, 8, "INPut4:POLarity INVerted", 1) ’
Sets INV CH4 on
3.7.5 Vertical range and offset
The SENSe:VOLTage<n>:RANGe:PTPeak command allows you to specify the
peak-to-peak range of the signal acquisition over all 8 divisions of the display
screen for each input channel separately. From this peak-to-peak value the
vertical sensitivity per division is calculated as follows:
<vertical_sensitivity> = <peak-to-peak> / 8.
After a
*
RST command, the peak-to-peak value is set at 1.6V for channel 1, which
complies to a vertical sensitivity of 200 mV.
- $XWRUDQJLQJ 1
- &RPEL6FRSH 1
- ,QVWUXPHQW 1
- Printed in the Netherlands 2
- 1 ABOUT THIS MANUAL 3
- B CROSS REFERENCES 7
- C MANUAL CONVENTIONS 7
- D STANDARDS INFORMATION 7
- E SUMMARY OF SYSTEM SETTINGS 7
- 2 GETTING STARTED WITH SCPI 10
- PROGRAMMING 10
- 2.3 Error Reporting 14
- 2.4 Acquiring Traces 15
- 3 USING THE COMBISCOPE 20
- INSTRUMENTS 20
- INPut SENSe 24
- TRACe CALCulate 24
- 3.4 Acquisition 37
- 3.4.1.1 Triggering 39
- Figure 3.4 DC Coupling 41
- Figure 3.5 AC Coupling 41
- 3.4.1.2 Video triggering 42
- Figure 3.6 LF Reject 42
- Figure 3.7 HF Reject 42
- 3.4.1.3 The trigger modes 44
- Figure 3.8 Pre-triggering 46
- 3.4.1.5 External triggering 47
- • Peak detection is off 47
- PRINT sample(i); 54
- SENSe:AVERage:COUNt 56
- 3.6 Channel Selection 57
- 3.7 Signal Conditioning 58
- , i.e., 1 division 60
- 3.8 Time Base Control 61
- 3.9 Post Processing 64
- CALCulate block, but not 66
- 0,5 *2,236068 1,118034== 70
- 3.10 Trace Memory 75
- 3.11 Screen/Display Functions 80
- PROGRAM EXAMPLE: 83
- MEAS selections 83
- 3.12 Print/Plot Functions 85
- 3.13 Real-Time Clock 87
- 3.14 Auto Calibration 87
- 3.15 Status Reporting 89
- 3.17 Front Panel Simulation 98
- 4 COMMAND REFERENCE 101
- 4.2 Command Summary 105
- 4.3 Command Descriptions 113
- CAL? CALibration 115
- CLS Clear Status 116
- ESE Event Status Enable 117
- ESR? Event Status Register 118
- IDN? Identification 119
- OPC Operation Complete 120
- OPT? Option identification 121
- RCL Recall instrument setup 122
- RST Reset 123
- SAV Save instrument setup 125
- SRE Service Request Enable 126
- STB? Status Byte 127
- TRG Trigger 128
- TST? Self-test 129
- WAI Wait-to-continue 130
- CALCulate<n>:FEED 133
- CALCulate<n>:MATH:STATe 137
- CALibration[:ALL] 141
- CONFigure 143
- DISPlay:BRIGhtness 145
- DISPlay:MENU[:NAME] 146
- DISPlay:MENU:STATe 147
- DISPlay:WINDow2:TEXT[1]:CLEar 150
- DISPlay:WINDow2:TEXT[1]:DATA 151
- DISPlay:WINDow2:TEXT[1]:STATe 153
- FORMat[:DATA] 157
- HCOPy:DATA? 158
- HCOPy:DEVice 159
- INITiate:CONTinuous 160
- INITiate[:IMMediate] 161
- INPut<n>:COUPling 162
- INPut<n>:IMPedance 164
- INPut<n>:POLarity 165
- INSTrument:NSELect 166
- INSTrument[:SELect] 166
- MEASure? 167
- SENSe:AVERage[:STATe] 176
- SENSe:FUNCtion:OFF 178
- SENSe:FUNCtion[:ON] 178
- SENSe:FUNCtion:STATe? 178
- → *RST Switches channel 1 on 179
- SENSe:SWEep:OFFSet:TIME 180
- SENSe:SWEep:REALtime[:STATe] 182
- SENSe:SWEep:TIME 183
- SENSe:SWEep:TIME:AUTO 185
- → *RST Switches CH1 on 186
- → *RST Resets the instrument 189
- STATus:OPERation:CONDition? 190
- STATus:OPERation:ENABle 190
- STATus:OPERation[:EVENt]? 190
- STATus:OPERation:NTRansition 190
- STATus:OPERation:PTRansition 190
- STATus:PRESet 192
- STATus:QUEStionable:ENABle 193
- STATus:QUEStionable[:EVENt]? 193
- STATus:QUEue[:NEXT]? 195
- SYSTem:BEEPer 196
- SYSTem:BEEPer:STATe 196
- SYSTem:DATE 200
- SYSTem:ERRor? 201
- SYSTem:KEY 202
- COMMAND REFERENCE 4 - 103 203
- SYSTem:SET 205
- SYSTem:TIME 207
- SYSTem:VERSion? 208
- TRACe:COPY 209
- TRACe[:DATA] 210
- Reads offset 212
- TRACe:POINts 213
- TRIGger[:SEQuence[1]]:HOLDoff 219
- TRIGger[:STARt]:HOLDoff 219
- TRIGger[:SEQuence[1]]:LEVel 220
- TRIGger[:STARt]:LEVel 220
- TRIGger[:STARt]:LEVel:AUTO 220
- TRIGger[:SEQuence[1]]:SLOPe 222
- TRIGger[:STARt]:SLOPe 222
- TRIGger[:SEQuence[1]]:SOURce 224
- TRIGger[:STARt]:SOURce 224
- TRIGger[:SEQuence[1]]:TYPE 226
- TRIGger[:STARt]:TYPE 226
- → 525 → NTSC 230
- → 1050 → HDTV 230
- → 1125 → HDTV 230
- → 1250 → HDTV 230
- TRIGger[:STARt]:VIDeo:LINE 232
- APPLICATION PROGRAM EXAMPLES 234
- APPENDIX A 234
- A.2 Acquiring Waveform Traces 238
- A.5 Pass/Fail Testing 243
- APPENDIX B CROSS REFERENCES 246
- B - 2 CROSS REFERENCES 247
- CROSS REFERENCES B - 3 248
- B.2.1 ACQUIRE menu 248
- B - 4 CROSS REFERENCES 249
- B.2.2 CURSORS menu 249
- Programmable with the 249
- RCL and SYST:SET commands 249
- CROSS REFERENCES B - 5 250
- B.2.3 DISPLAY menu 250
- B - 6 CROSS REFERENCES 251
- B.2.4 MATHPLUS MATH menu 251
- CROSS REFERENCES B - 7 252
- B - 8 CROSS REFERENCES 253
- TRAC:COPY 255
- TRAC[:DATA]? 255
- TRAC[:DATA] 255
- CROSS REFERENCES B - 11 256
- B.2.9 TB MODE menu 256
- B - 12 CROSS REFERENCES 257
- B.2.10 TRIGGER menu 257
- CROSS REFERENCES B - 13 258
- B - 14 CROSS REFERENCES 259
- B.2.11 UTILITY menu 259
- CROSS REFERENCES B - 15 260
- Note: - 50 261
- only applicable for PM3394B 261
- APPENDIX C MANUAL CONVENTIONS 274
- C.2 Glossary of Symbols Used 277
- C.3 List of Tables 277
- C.4 List of Figures 278
- C.5 Documents Referenced 279
- APPENDIX D 280
- STANDARDS INFORMATION 280
- Elements 281
- APPENDIX E 283
- SUMMARY OF SYSTEM SETTINGS 283
- Numerics 286
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