Cal Power TrueWave TW5250 Service Manual page 51

SERVICE MANUAL
Calculate the calibration constants:
VALUE1 = 240.0 / MEAS1
VALUE2 = 240.0 / MEAS2
VALUE3 = 240.0 / MEAS3
VALUE4 = 240.0 / MEAS4
VALUE5 = 240.0 / MEAS5
Update the local high range frequency calibration of the TW by sending the following
GPIB string:
CAL{1,2,3}:OUTP:LOC:HIR:VOLT:FREQCAL VALUE1 VALUE2 VALUE3 VALUE4 VALUE5
Close the TW's output relay:
OUTPUT ON
Wait for the DMM reading to settle and record the value as RDNG1.
Query the TW's output put voltage with the GPIB string below and record this value as
MEAS1.
MEAS{1,2,3}:VOLT?
Set the TW's frequency to 80 Hz with the following GPIB command:
SOUR:FREQ 80.0
Wait for the DMM reading to settle and record the value as RDNG2.
Query the TW's output put voltage with the GPIB string below and record this value as
MEAS2.
MEAS{1,2,3}:VOLT?
Set the TW's frequency to 160 Hz with the following GPIB command:
SOUR:FREQ 160.0
Wait for the DMM reading to settle and record the value as RDNG3.
Query the TW's output put voltage with the GPIB string below and record this value as
MEAS3.
MEAS{1,2,3}:VOLT?
Set the TW's frequency to 320 Hz with the following GPIB command:
SOUR:FREQ 320.0
CALIBRATION
3-15