Kenwood PDS-20 Instruction Manual page 23

ADJUSTMENT
As initial adjustment is completed, take note of the following
if readjustment is to be done.
© Use a well-insulated screwdriver to perform adjustment.
© Start to supply the device with power 30 minutes or more
before starting adjustment.
© If some measuring instruments are needed, leave the ad-
justment to call the dealer.
o Adjust the zero of the voltmeter and the ammeter before
starting adjustment.
VOLTAGE ADJUSTMENT
Adjustment of V REF OFFSET
With the CV control turned fully counterclockwise, adjust
VR2 to read O V across @) and +S) of the rear panel.
Adjustment of V REF GAIN
With the CV control turned fully clockwise, adjust VR1 to read
10.25 V across () and 4S) of the rear panel.
Adjustment of V METER OFFSET
With the CV control turned fully counterclockwise and the
OUTPUT switch turned off, adjust VR8 so that the V-meter
read O V.
V OUT OFFSET
Adjustment of V METER GAIN
At the rated output, adjust VR7 so that the V-meter deflect
fully to the end of the scale.
Adjustment of V CHECK
With the V/I CHECK switch on, adjust VR5 so that the
V-meter read the output voltage.
CURRENT ADJUSTMENTS
Adjustment of | REF OFFSET
With the CC control turned fully counterclockwise, adjust
VR4 to read O V across and (i) of the rear panel.
Adjustment of | REF GAIN
With the CC control turned fully clockwise and the OUTPUT
switch on, adjust VR3 so that the current become the rated
value plus 2.5%.
Adjustment of | METER OFFSET
With the CC control turned fully counterclockwise and the
OUTPUT switch off, adjust VR10 so that the I-meter read
OV.
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