Xantrex XTR 850 Watt, Operating Manual

Page: 258 / 286

Calibration and Troubleshooting
B-24 M370046-01
Offset Calibration
Offset calibration of the power supply provides the best accuracy in low-
range input current.
To perform offset calibration:
1. Set the voltage source attached to the non-isolated current APG input
to 10% of the nominal current level, in this case 0.400 V.
2. Turn the output power on.
3. Read the input voltage value from the voltmeter connected in step 2
of the gain calibration.
4. Type SCPI input current calibration command with voltage noted in
step 3 as the parameter “data”.
For example, you would type
:CAL:INP:ANAL:CURR 0.43.
After performing offset calibration, it is highly recommended that you
repeat gain calibration.
SCPI Command
[:]CALibration[<channel>]:INPut:ANALog:CURRent{<voltme
ter reading in volts>}