PMC-A
67
6
M
a
inte
na
nc
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6.2
Calibration
The power supply is calibrated at the factory before shipment.
However, periodic calibration is necessary due to changes that
occur after extended use.
For calibration, contact your Kikusui agent or distributor. If
you wish to calibrate the power supply, follow the procedure
below. However, this calibration procedure omits some of the
calibration items.
Test equipment required for calibration
For calibration, the following equipment is necessary.
•
DC voltmeter (DVM) with measuring accuracy of 0.02 %
or better.
•
Shunt resistor with accuracy of 0.1 % or better (a resistor
capable of handling the rated output current of the PMC-A
series power supply being calibrated).
Environment
Perform calibration under the following environment.
•
Ambient temperature: 23
°
C
±
5
°
C
•
Ambient humidity: 80 % rh or less
To minimize the calibration error due to initial drift, warm up
(turn on) the power supply for at least 30 minutes before cali-
bration. In addition, warm up the DVM and shunt resistor for
their appropriate time.
Calibration Procedure
Calibration items can be grouped into two types: voltage sys-
tem and current system. Calibration is performed using the
variable resistors inside the front panel sub-panel cover.
