TB 9-6625-2257-24
c. Connect TI to a 115 V ac source.
d. Press pushbuttons as listed in (1) through (4) below:
(1) POWER ON-OFF to ON.
(2) VDC.
(3) RANGE 1.
(4) FILTER ON-OFF to ON.
e. Allow 1 hour for warm-up.
8. Dc Voltage Accuracy
a. Performance Check
(1) Connect calibrator OUTPUT HI and LO to TI HI and LO INPUT.
(2) Set calibrator output to +100 mV dc. If TI does not indicate between +0.0999
and +0.1001, perform b (1) through (4) and respective model 8100A or 8100B
procedure below.
(3) Set calibrator output to l00 mV dc. If TI does not indicate between 0.0999 and
0.1001, perform b (1) through (4) and respective model 8100A or 8100B procedure
below.
(4) Repeat technique of (2) and (3) above using settings and indications listed in
table 3. If TI does not indicate within limits specified, perform b (14) through (17) below.
Table 3. Dc Voltage Accuracy
Test instrument indications
Calibrator settings
(+ and )
RANGE
(+ and )
pushbutton settings
Min
Max
V dc
1
1
0.9994
1.0006
10
10
9.994
10.006
100
100
99.94
100.06
1000
1000
999.4
1000.6
b. Adjustments
(1) Disconnect calibrator from TI and press RANGE 1000 pushbutton.
(2) Connect multimeter to TP1 and LO INPUT. Adjust ZERO (R175) for a 0 V dc
10 V indication on multimeter.
(3) Disconnect multimeter and press RANGE 1 pushbutton.
(4) Connect calibrator OUTPUT HI and LO to TI HI and LO INPUT.