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Kenwood PD8-20 Service Manual page 11

Constant-voltage current power supply
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V OUT offset
adjustment
V meter gain
adjustment
V check adjust-
ment
Incr Offset
adjustment
Item
Control and setting
bee
OUTPUT; ON
VOLTAGE; maximum
counterclockwise posi-
tion
CURRENT;
maximum
clockwise position
CURRENT; maximum
clockwise position
V/I CHECK; OFF
OUTPUT;
ON
CURRENT;
maximum
clockwise position
V/l CHECK;
ON
OUTPUT; ON
VOLTAGE; maximum
clockwise position
CURRENT;
maximum
counterclockwise posi-
tion
ment
I meter offset
adjustment
| meter gain
adjustment
I check adjust-
ment
Irer gain adjust-
lourput; On
VOLTAGE;
maximum
clockwise position
CURRENT; optimum
position
OUTPUT; OFF
VOLTAGE; maximum
clockwise position
CURRENT; maximum
counterclockwise posi-
tion
OUTPUT; ON
VOLTAGE; maximum
clockwise position
CURRENT; optimum
position
V/l CHECK; OFF
ADJUSTMENT
Adj.
Control
OV
D type; OV +0 V
Specified voltage(full
scale)
D type; specified
voltage +1 digit
Specified voltage (full
soale)
D type; specified
voltage +1 digit
a oe
Procedure
Make adjustment while observing the V
meter on the front panel.
terminal @ and © on the front panel.
Rotating the VOLTAGE control to indicate
specified voltage range on the multimeter.
Make adjustment while observing the V
meter on the front panel.
8810A
Load (1)
Current
detecting
resistor
VR4
10mV
+ 1tmV
Connect the multimeter between control
terminal NO.8 and NO.11
on the rear
panel.
VR10
current
OA
D type; OA 0A
+2.5% for specified
1
the specified current value.
2
Make adjustment so that the current
value of the load (1) displayes + 2.5%
for the specified current value while
measuring the current value.
8810A
Load (1)
Current
detecting
resistor
Specified current
value(full scale)
D type; specified cur-
rent value + 1 digit
V/I CHECK; ON
VOLTAGE;
maximum
clockwise position
CURRENT;
optimum
position
8810A
VR6
Load (1)
Current
detecting
resistor
Specified current value
(full scale)
D type; specified cur-
rent value +1 digit
Note:
Be sure to adjust the Ipe¢ gain, | meter offset and | check when the CC indicator is lit.
the specified current value.
2
Set the value to specified current value
by using the CURRENT control.
3
Make adjustment so that the value of |
meter on the front panel becomes the
specified current value.
Connect a muitimeter between OUTPUT
Connect a load (1) which can accept
Connect a load (1) which can accept
11

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