58542 VXIbus Universal Power Meter
A-18 Publication 21555, Rev. E, September 2002
A.4.7 Reading Power Measurements Example 7
The following example is similar to the example above; however, it now uses TRIG:SOUR BUS instead
of IMMediate so that triggering is controlled by the TRIG command. EXT or TTLT triggering can not
be used in NORMal Mode. Additionally, INIT:CONT is set to OFF, allowing the INIT (or INIT:IMM)
command to control arming of the triggering cycle.
280 ASSIGN Pwr_mtr to 70101
290 CLEAR @Pwr_mtr
300 WAIT 1
310 OUTPUT @Pwr_mtr;CALC1:MODE NORM! Can ONLY send Configuration Commands in Normal Mode!!
320 OUTPUT @Pwr_mtr;TRIG:SOUR BUS ! Program controls triggering with TRIG or *TRG
330 OUTPUT @Pwr_mtr;INIT:CONT OFF ! Program controls instrument trigger arming
340 !
350 OUTPUT @Pwr_mtr;SENS2:AVER:COUN 1 ! Sets averaging to manual and one sample per reading.
360 OUTPUT @Pwr_mtr;CALC1:POW 2 ! Channel 1 configured to measure sensor 2 power
370 !
380 OUTPUT @Pwr_mtr;SENS2:CORR:FREQ 17.4E9
! Applies Cal Factor for 17.4 GHz to data.
390 !
400 FOR I=1 TO 10
410 OUTPUT @Pwr_mtr;INIT ! INIT arms the triggering and measurement cycle
420 OUTPUT @Pwr_mtr;TRIG ! BUS trigger
430 OUTPUT @Pwr_mtr;FETC1? ! Measures Power at sensor.
440 ENTER @Pwr_mtr;Rdg
450 PRINT Rdg
460 NEXT I
470 !
670 END
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