TB 9-6625-1185-24
8. Dc Output Voltage and VOLTS Meter
a. Performance Check
(1) Connect multimeter (and voltage divider as required), positive lead to TI
GUARD terminal and negative lead to TI - (negative) RX terminal. Set MULTIPLIER
switch to X1 position.
(2) Press and hold TEST VOLTAGE switch and adjust DC ADJUST control for TI
indications listed in table 3. Multimeter/voltage divider will indicate within
l i m i t s specified.
Table 3. Output Voltage and Volts Meter
Test instrument
Multimeter indication
meter indications
(V dc)
Models
Models
Model 1620B
Model
1620 and
1620 and 1620D
1620B
1620D
Min
Max
Min
Max
1
1
1000
2500
0.980
1.020
2.450
2.550
20001
750
730
770
1.950
2.050
1
500
1500
480
520
1.450
1.550
12501
250
230
270
1.200
1.300
1002
750
98
102
700
800
2
75
500
73
77
450
550
502
250
48
52
200
300
252
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23
27
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Voltage divider used.
1
Check model 1620D only. Set VOLTAGE MULTIPLIER switch to X.1. Upon completion of checks, set
2
VOLTAGE MULTIPLIER switch to X1.
b. Adjustments. No adjustments can be made.
9. Megohms Meter
a. Performance Check
NOTE
It is not necessary to hold down TEST VOLTAGE switch on
model 1620B.
(1) Turn TI DC ADJUST control fully ccw.
(2) Press and hold TEST VOLTAGE switch and adjust ZERO ADJ (∞ ADJ)
control for a ∞ (INFINITY) indication on MEGOHMS meter.
(3) Release TEST VOLTAGE switch.
(4) Turn TI MULTIPLIER switch to CHK (CAL).
(5) Press and hold TEST VOLTAGE switch and adjust DC ADJUST control for a
500 volt indication on VOLTS meter. TI MEGOHMS meter pointer will deflect to 2
(CHK) red line. If not, perform b below.
