Technical data

82 U8001A/U8002A User’s and Service Guide
5Service Guide
Voltage Calibration
Before attempting to calibrate the power supply, please
ensure that you have disconnected all loads from the power
supply and connect a digital voltmeter (DVM) across the
output terminals. You will be calibrating for low voltage,
middle voltage and high voltage point respectively. Make sure
that the power supply is in constant voltage (CV) mode
along the voltage calibration.
1 Enter calibration mode.
• In order to enter the calibration mode, hold down the
Memory button when power on the power supply.
• The output is enabled.
• The calibration will start with voltage calibration mode.
• Display will show "C" blinking.
• The CV annunciator will be turned on.
• Ensure that the power supply is in CV mode.
Otherwise, the CC annunciator will fast- blink.
2 Low Voltage Calibration Point.
• Display will show "C" blinking.
• The M1 annunciator will be turned on.
• Use the knob to enter the reading obtained from the
DVM.
• Press the "Memory" button to save the changes and
move to the next calibration point. You will be able to
perform this if the power supply is in CV mode.
3 Middle Voltage Calibration Point.
• Display will show "C" blinking.
• The M2 annunciator will be turned on.
• Use the knob to enter the reading obtained from the
DVM.
• Press the "Memory" button to save the changes and
move to the next calibration point. You will be able to
perform this if the power supply is in CV mode.