TB 9-6625-2023-35
Table 3. Dc voltage
Test instrument
Test instrument
HIGH RESOLN
Calibrator
indications
RANGE
settings
output settings
settings
(dc)
Min
Max
.1
off
100 mV
0.099985
0.100015
1
off
1V
0.99990
1.00010
1
on
1V
0.999905
1.000095
1
on
-1 V
-0.999905
-1.000095
10
on
10 V
9.99917
10.00083
10
on
-10 V
-9.99917
-10.00083
10
off
10 V
9.9991
10.0009
100
off
100 V
99.989
100.011
100
on
100 V
99.9897
100.0103
1k
on
1000 V
999.897
1000.103
1k
off
1000 V
999.89
1000.11
(4) Press calibrator RESET key.
b. Adjustments.
(1) Set calibrator to STANDBY and disconnect from TI.
(2) Remove TI top outer cover and top inner cover to gain access to circuit board
A10.
(3) Set controls as listed in (a) through (e) below:
(a)
RANGE 10 key to on.
(b)
HIGH RESOLN key to on.
(c)
TRIGGER INTERNAL key to on.
(d)
MATH OFF key to on.
(e)
AUTO CAL key to off.
(4) Connect multimeter (V dc mode) INPUT LO to TI INPUT (2 WIRE) LO
(inguard chassis) and multimeter INPUT HI to A10 TP1 (fig. 1).
(5) Adjust A10 R66 (fig. 1) until multimeter indicates 0 V dc 50 V.
(6) Disconnect multimeter.
(7) Press RANGE 100 and AUTO CAL keys to on.
(8) If TI does not indicate 0.0000 V 1 count, repeat (3) through (7) above.
(9) Replace TI protective covers.
(10) Press RANGE 1 key to on.
(11) Short INPUT (2 WIRE) HI and LO using copper wire or shorting bar.
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