Specifications

SEVEN: CALIBRATION
INTRODUCTION
Exercise caution when using and calibrating a power supply. High energy levels can be stored at the output
voltage terminals on a power supply in normal operation. In addition, potentially lethal voltages exist in the
power circuit and on the output and sense connectors of a power supply with a rated output greater than 40V.
Filter capacitors store potentially dangerous energy for some time after power is removed.
This procedure describes calibration for the AMREL Programmable DC Power Supply. The supply is calibrated
either through local or remote control. The following information provides calibration procedures in local and
remote mode.
NO hardware adjustment is necessary since all calibration is accomplished by software. The software sends
calibration constants to the supply via the front panel keys. To maintain power supply’s precision output. It is
recommended that the power supply should calibrate on an annually basis.
The four parameters that need be calibrated are output voltage, output current, readback voltage and readback
current. After all the power supply parameters are calibrated, the supply returns to normal operating condition. If
there are any errors in the calibration, cycle the power and recalibrate. All constants are saved in a non-volatile
EEPROM.
CALIBRATION SERVICE ENVIRONMENT AND PRECAUTIONS
x Follow established antistatic procedures.
x Work at a bench with adequate room and support for the test unit and for all equipment required.
x To reduce shock hazard, use only an insulated, straight-bladed screwdriver when calibrating.
x NEVER calibrate these units alone. Ensure that someone is present who can help should an accident
occur.
WARNING
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