Program Examples
Publication 21555, Rev. E, September 2002 A-35
A.8 High Speed Measurement Examples
A.8.1 High Speed Measurement Example 1
The following program shows the fastest SWIFt Mode measurement speed possible. IMMediate
triggering is used to allow the 58542 to trigger a measurement automatically. Be sure to only use one
channel defined to one sensor for the fastest speeds.
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
210 WAIT 0.3
220 OUTPUT @Pwr_mtr;CALC1:MODE NORM ! NORMal Mode to perform channel configuration
230 OUTPUT @Pwr_mtr;CALC1:POW 1 ! Channels 1 or 2 can be either POW 1 or POW 2
240 ! RAT and DIFF are illegal in SWIFt and BURSt Modes.
250 !
260 !################################
270 !
280 ! Entering SWIFt Mode
290 !
300 OUTPUT @Pwr_mtr;CALC1:MODE SWIF ! Enters SWIFt Mode for fastest continuous
! measurements with IMM.
310 !
320 OUTPUT @Pwr_mtr;SENS1:CORR:FREQ 16.97E9
! Applies Cal Factor in SWIFt mode
330 ! Can be sent before or after CALC#:MODE SWIF
340 !
350 OUTPUT @Pwr_mtr;TRIG:SOUR IMM
360
370 !
380 !
390 Loopcount=100
400 Time1=TIMEDATE
410 FOR I=1 TO Loopcount
420 OUTPUT @Pwr_mtr;FETC1? ! FETC#? acquires data
430 ENTER @Pwr_mtr;Chan1sens_1(I)
440 NEXT I
450 Time2=TIMEDATE
460 Time=Time2-Time1
470 Speed=Loopcount/Time ! Units are readings per second.
480 !
490 PRINT Chan1sens_1(*)
500 PRINT Speed; readings per second.
510 !
520 END
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