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Polarization Voltage
Adjustment
171421
Fig.3. 1. Polarization Voltage adjustment potentiometer
The voltage should be measured with a DC voltmeter with a rating of at
least 20 kD/V. If necessary, adjustment is carried out using the potentiome-
ter on circuit board ZG 0030 (Fig.3.1), situated in the lower half of the
instrument. Access to the potentiometer is gained by removing the instru-
ment case.
3.2. CALIBRATION
3.2.1. Calibration for Voltage Measurements
22
1. Carry out preliminary adjustments (section 3.1), if necessary.
2. Fit voltage scale (SA 0051, SA 0052 or SA 0054).
3. Set controls on
~01
0 to the following positions:
GAl N CONTROL
INPUT SECTION ATTENUATOR
OUTPUT SECTION ATTENUATOR
"Cal."
"100 mV"
"x
1"
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