AMETEK HPD Series - Manual (Page 58)

Calibration
Over Voltage Protection (OVP) Calibration
56 Operating Manual for GPIB for XT/HPD Series Power Supply
Over Voltage Protection (OVP) Calibration
We recommend that you perform OVP calibration every six months. Connecting a
digital voltmeter as in
“Voltage Calibration Setup” is optional.
1. Disconnect all loads from the power supply.
2. Ensure that jumper J217 on the interface PCB is CLOSED to enable remote
OVP calibration (Jumper J217 is closed at the factory).
3. Activate calibration mode by sending command CMODE ON or CMODE 1 to
the power supply.
4. Send the command OVCAL to the power supply. The ADR LED will light
during OVP calibration. Calibration is complete when the ADR LED turns off.
This may take a few minutes.
5. Use the OVSET, OVSET?, and VSET commands to trip the OVP level,
confirming that the calibration was successful. When you trip the OVP level, the
red OVP LED will light and the voltage will drop to zero. Send the command
RST to clear the OVP condition. Refer to the OVP program accuracy
specification in
Section 1 .
6. Turn off calibration mode by sending the command CMODE OFF or CMODE 0
to the power supply.