TB 9-6625-2361-35
Table 3. Dc Voltage
Test
Calibrator
Test instrument
instrument
output
indications
range settings
settings
Min
Max
100 mV
100 mV
99.987 (-3)
100.013 (-3)
1V
1V
0.99995
1.00005
10 V
10 V
9.9997
10.0003
10 V1
10 V
-9.99971
-10.00029
10 V
-10 V
-9.99971
-10.00029
100 V2
100 V
99.995
100.005
1000 V
1000 V
999.95
1000.05
Press TI RANGE HI RES pushbutton for a 61/2 digit display.
1
2Press TI RANGE HI RES pushbutton for a 51/2 digit display.
b. Adjustments
(1) Set calibrator to STANDBY and disconnect from TI.
(2) Press RANGE DOWN pushbutton to select 10 V manual range.
(3) Lift CAL switch cover (tab) and slide CAL switch to CAL MODE (down).
PEAK or CAL light will be on (flashing).
(4) Short TI input terminals. If TI does not indicate 0.0000-0 1 digit, adjust
A10A1R8 on A/D converter board to obtain 0.0000-0 indication. Remove short.
(5) Connect calibrator OUTPUT HI, LO and V-GUARD to TI INPUT/Ω SENSE
HI, LO and GUARD.
(6) Set calibrator for a 10.1 V output. Adjust R1 (POS. CAL) on A/D converter board
for a TI indication between +10.0999-9 and +10.1000-1 V (R).
(7) Set calibrator for a -10.1 V output. Adjust R2 (NEG. CAL) on A/D converter
board for a TI indication between -10.0999-9 and -10.1000-1 V (R).
(8) Set calibrator for a 500 mV output. Adjust A10A1R7 on A/D converter board for
a TI indication between +0.4999-9 and +0.5000-1 V (R).
(9) Set calibrator for a 5 V output. Adjust A10A1R6 on A/D converter board for a TI
indication between +5.0999-9 and +5.1000-1 V (R).
(10) Set calibrator for a 2.6 V output. Adjust A10A1R5 on A/D converter board for a
TI indication between +2.5999-9 and +2.6000-1 V (R).
(11) Set calibrator for a 1.4 V output. Adjust A10A1R4 on A/D converter board for a
TI indication between +1.3999-9 and +1.4000-1 V (R).
(12) Set calibrator for a 750 mV output. Adjust A10A1R3 on A/D converter board for
a TI indication between +0.7499-9 and +0.7500-1 V (R).
(13) Repeat (6) through (12) above as necessary.
(14) Press TI RANGE DOWN pushbutton to select 100 mV range.
(15) Set calibrator for a 0 V output. Adjust A8R53 on dc signal conditioner board for
a TI indication of 0 +0 V.
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