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
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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
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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.
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!
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!################################
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!
280
! Entering SWIFt Mode
290
!
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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
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!
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OUTPUT @Pwr_mtr;TRIG:SOUR IMM
360
370
!
380
!
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Loopcount=100
400
Time1=TIMEDATE
410
FOR I=1 TO Loopcount
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OUTPUT @Pwr_mtr;FETC1?
! FETC#? acquires data
430
ENTER @Pwr_mtr;Chan1sens_1(I)
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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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