Cal Power TrueWave TW5250 Service Manual page 68

CALIBRATION
Program the TW to 160 Hz using the string below:
SOUR{1,2,3}:FREQ 160
Wait until the power analyzer has stabilized and record the current reading as RDNG3.
Query the TW's current using the GPIB string below, and record this value as MEAS3.
MEAS{1,2,3}:CURR?
Program the TW to 320 Hz using the string below:
SOUR{1,2,3}:FREQ 320
Wait until the power analyzer has stabilized and record the current reading as RDNG4.
Query the TW's current using the GPIB string below, and record this value as MEAS4.
MEAS{1,2,3}:CURR?
Program the TW to 500 Hz using the string below:
SOUR{1,2,3}:FREQ 500
Wait until the power analyzer has stabilized and record the current reading as RDNG5.
Query the TW's current using the GPIB string below, and record this value as MEAS5.
MEAS{1,2,3}:CURR?
Program the TW to 60 Hz and open the output relay using the strings below:
SOUR{1,2,3}:FREQ 60
OUTP OFF
Calculate the calibration constants using the following equations:
VALUE1 = RDGN1/MEAS1
VALUE2 = RDGN2/MEAS2
VALUE3 = RDGN3/MEAS3
VALUE4 = RDGN4/MEAS4
VALUE5 = RDGN5/MEAS5
Update the TW's calibration data:
CAL{1,2,3}:MEAS:REM:LOR:CURR:FREQCAL VALUE1 VALUE2 VALUE3 VALUE4 VALUE5
CAL{1,2,3}:MEAS:LOC:LOR:CURR:FREQCAL VALUE1 VALUE2 VALUE3 VALUE4 VALUE5
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TW SERIES