User`s guide

Chapter 3 Calibration Procedures

General Calibration/Adjustment Procedure

The calibration procedures from the front panel are described in this section. For

voltage calibration, disconnect all loads from the power supply and connect a DVM

across the output terminals. For current calibration, disconnect all loads from the

power supply, connect an appropriate current monitoring resistor 0.01

Ω across the

output terminals, and connect a DVM across the terminals of the monitoring resistor.

Note that the power supply should be calibrated after 1-hour warm-up with no load

connected.

The following table shows calibration parameters and points which should be used to

calibrate the output voltage and current.

Table 3-2. Parameters for Calibration

Note You can terminate any CAL SETUP without changing its calibration constants by

turning off power.

Note Perform the voltage calibration prior to the OVP calibration and the current

calibration prior to the OCP calibration.

Calibration

Parameter

Voltage/

Current

Calibration Point

mnemonic

CAL SETUP 1 Voltage

V LO

V MI

V HI

CAL SETUP 2 OVP None

CAL SETUP 3 Current

I LO

I MI

I HI

CAL SETUP 4 OCP None