AMETEK APG-XT - Manual (Page 29)

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Section 4. Calibration
Introduction
You can calibrate the GPIB interface by adjusting the signal levels on the interface
card so that they correspond to the expected signal levels on the power supply's main
assembly. You may need to recalibrate the interface if you replace parts either on the
interface board or on the main power supply board, or if the unit falls out of
specification due to component aging drifts.
You can calibrate the GPIB Interface for:
• Voltage program
• Voltage readback
• Current program
• Current readback
• Overvoltage protection
The calibration procedures in this section are designed to be performed at an ambient
temperature of 25°C ± 5°C.
WARNING
Exercise caution when using and servicing power supplies. High energy levels can
be stored at the output voltage terminals on all power supplies in normal operation. In
addition, potentially lethal voltages exist in the power circuit and the output connector
of power supplies which are rated at 40V and over. Filter capacitors store potentially
dangerous energy for some time after power is removed.