Xantrex Watt Series Programmable DC Power Supply XG..., Operating Manual

Page: 209 / 286

Calibration and Troubleshooting
M370078-01 6-11
6
Non-isolated Current Monitoring Calibration
To calibrate the non-isolated current monitoring:
1. Short the main output with a shunt. Connect a multimeter to measure
the voltage across the shunt.
2. Connect the voltmeter to the non-isolated current monitoring output
lines (J1.12 - J1.7).
3. Set the Current APG level to 4 V. Send the SCPI command:
SYST:COMM:APR:LEV:CURR 4
4. Set the input source as Local.
5. The SCPI command is:
SYST:REM:SOUR:CURR LOC
6. Set the main output voltage to 100% by sending the command
SOUR:VOLT <ModelVolt> or use the rotary adjust/Enter control.
7. Turn the main output On by pressing the OUTPUT ENABLE Main
button on the front panel or send the command:
:OUTP ON
The OUTPUT ENABLE Main button will illuminate.
8. Enter interactive calibration mode by sending SCPI command:
CAL:MON:CURR
9. Press on the terminal keys – or + to reduce or increase the monitoring
value. Adjust the monitoring value displayed on the voltmeter that
was set up in Step 1 to read as close as possible to 4.000 V.
10. Press any key other than the + or – keys to exit from interactive
calibration mode.
Important:
For maximum accuracy at a specific APG level. Follow the
calibration procedure again but use the intended operating voltage level in steps 3
and 8.