Program Examples
Publication 21555, Rev. E, September 2002 A-19
A.4.8 Reading Power Measurements Example 8
The following program shows fast BUS triggering in the SWIFt Mode. TRIG (or *TRG) is used to
acquire data, and FETCh#? processes and outputs the data to the slot 0 controller/resource manager.
This program does not use the meter’s data buffering capability.
170 ASSIGN @Pwr_mtr to 70101
180 CLEAR @Pwr_mtr
190 WAIT 1
200 OUTPUT @Pwr_mtr;*CLS ! Clears old messages from SYST:ERR buffer
205 WAIT 0.3
210 PRINT Running...
220 !
230 OUTPUT @Pwr_mtr;CALC1:MODE NORM ! NORMal Mode to perform channel configuration
240 OUTPUT @Pwr_mtr;CALC1:POW 1 ! Channels 1 or 2 can be either POW 1 or POW 2
250 ! RAT and DIFF are illegal in SWIFt and BURSt Modes.
260 !
270 !##########################################
280 !
290 ! Entering SWIFt Mode
300 !
310 OUTPUT @Pwr_mtr;CALC1:MODE SWIF ! Enters SWIFt Mode for fastest individual data point
! triggered measurements.
320 !
330 OUTPUT @Pwr_mtr;SENS1:CORR:FREQ 1.44E9
! Applies Cal Factor in SWIFt mode
340 ! Can be sent before or after CALC#:MODE SWIF
350 !
360 OUTPUT @Pwr_mtr;TRIG:SOUR BUS ! BUS or EXT triggering is slower than IMM
370 ! Can be sent before or after CALC#:MODE SWIF
380 !
390 FOR I=1 TO 10
400 FOR K=1 TO 20
410 OUTPUT @Pwr_mtr;TRIG ! TRIG is the SCPI Bus trigger. Can also use *TRG
420 OUTPUT @Pwr_mtr;FETC1? ! FETC#? acquires data
430 ENTER @Pwr_mtr;Chan1sens_1(K)
440 !ENTER @Pwr_mtr;Chan1sens_1(K),Chan2sens_2(K)
! Use this line when two sensors are attached.
450 NEXT K
460 !
470 PRINT Chan1sens_1(*)
480 !PRINT Chan1sens_1(*),Chan2sens_2(*) ! Use this line when two sensors are attached.
490 PRINT “”
500 NEXT I
510 !
520 END
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