Cal Power TrueWave TW5250 Service Manual page 46

CALIBRATION
Wait for the DMM to settle and record the value as RDGN1.
Send the following query command to the TW and record the return string as MEAS1:
MEAS{1,2,3}:VOLT?
Calculate the offset value:
VALUE1 = RDGN1 – MEAS1
Send the offset value to the TW:
CAL{1,2,3}:MEAS:REM:HIR:VOLT:OFFSET VALUE1
Measure the current offset by sending the following GPIB query and record the return
string as MEAS1:
MEAS{1,2,3}:CURR?
Calculate the offset value:
VALUE1 = -1.0 * MEAS1
Send the calculated offset to the TW:
CAL{1,2,3}:MEAS:REM:HIR:CURR:OFFSET VALUE1
Set the TW to 440 volts DC by sending the following GPIB string:
SOUR{1,2,3}:VOLT:OFFSET 440
Wait for the DMM to settle. Take a DMM reading and record the value as RDGN1.
Query the output voltage of the TW and record the return string as MEAS1:
MEAS{1,2,3}:VOLT?
Set the TW to -440 volts DC by sending the following GPIB string:
SOUR{1,2,3}:VOLT:OFFSET –440
Wait for the DMM to settle. Take a DMM reading and record the value as RDGN2.
Query the output voltage of the TW and record the return string as MEAS2:
MEAS{1,2,3}:VOLT?
3-10
TW SERIES