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RESISTOR
PRECISION
SHUNT
Figure N. Current Calibration Configuration
6.3 LOCAL CALIBRATION
The following steps describe the calibration procedure of the supply via front panel keypads in local mode.
CAUTION: In these procedures, voltages and currents may exceed full scale value. Take all necessary
precautions.
STEPS:
1. Disconnect all loads from the supply.
2. Strap the supply for local sensing.
3. Connect the voltmeter to the +S and -S rear terminals as in figure M. for Voltage calibration.
4. Turn on the power supply and press " 8 " & " ON/OFF " simultaneously.
5. The supply will begin the voltage and current calibration process.
VOLTAGE CALIBRATION:
1. The supply initially sends an offset voltage to the output. This offset voltage is measured on the DMM.
2. Enter in the " V Lo = " value to the power supply by the front panel keys, and press "ENTER" once. For
example, if the DMM reads 4.662 V, press:
4
•
6 6 2 ENTER
3. After calibrating the voltage offset, the supply sends full scale voltage to the output. This value is
measured on the DMM.
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