Offset Calibration - Ametek Sorensen XG Operation Manual

Calibration and Troubleshooting

Offset Calibration

Offset calibration of the power supply provides the best accuracy in
low-range current.
To perform offset calibration:
1.
2.
3.
After performing offset calibration, it is highly recommended that you
repeat gain calibration.
Important: For best results, both calibrations may be repeated several times.
To maintain the high current accuracy of the XG/XTR family of power supplies,
user current calibration should only be done with a high accuracy calibrated
shunt resistor of at least 0.025% tolerance.
[:]CALibration[<channel>]:OUTPut:CURRent{<ammeter
reading in amps>}
7-8
After performing gain calibration, set the current to 10% from
the nominal.
Read the current value on the ammeter display.
Type SCPI command with the current value as parameter
"data".
For example, you would type : CAL : OUT P: CURR 0.50 if you
had an XG (or XTR) 150-5.6 calibrating with the current set point
set to 0.56 A and the actual current measured was 0.50A.
SCPI Command
M370430-01 Rev B