TB 9-4931-217-40
NOTE
Range switch on resistance bridge is not effective in the
following equipment setup.
(15) Connect TI UNKNOWN terminal 1 to UNKNOWN terminal 4 of resistance
measuring system.
(16) Connect TI UNKNOWN terminal 2 to GENERATOR terminal 2 of resistance
measuring system.
(17) Set RANGE switch to 1 k
(kilohm).
(18) Set resistance measuring system dials to 001000.010.
(19) Turn MAIN DIAL to 0.9(-)00.
(20) Repeat (4) (b) and (c) through (8) above. Adjust only the two least significant
MAIN DIAL controls for best null indication. MAIN DIAL indication will be within limits
specified in table 6.
(21) Repeat technique of (18) through (20) above, using settings and indications
listed in table 6.
Table 6. Most Significant Dial Calibration
Test instrument MAIN DIAL.
Indications when
Resistance measuring
null is obtained
system dial settings
Initial settings
Min
Max
001000.010
0.9(-)00
0.9994
0.9(-)06
002000.010
1.9(-)00
1.9989
1.9(-)11
003000.010
2.9(-)00
2.9984
2.9(-)16
004000.010
3.9(-)00
3.9979
3.9(-)21
005000.010
4.9(-)00
4.9974
4.9(-)26
006000.010
5.9(-)00
5.9969
5.9(-)31
007000.010
6.9(-)00
6.9964
6.9(-)36
008000.010
7.9(-)00
7.9959
7.9(-)41
009000.010
8.9(-)00
8.9954
8.9(-)46
010000.010
9.9(-)00
9.9949
9.9(-)51
011000.010
10.9(-)00
10.9944
10.9(-)56
012000.010
11.9(-)00
11.9939
11.9(-)61
(22) Set RANGE switch to 10 k .
(23) Set resistance measuring system dials to 001000.010.
(24) Turn MAIN DIAL to 0.09(-)0.
(25) Repeat (4) (b) and (c) through (8) above. Adjust only the two least significant
MAIN DIAL controls for best null indication. MAIN DIAL indication will be within limits
specified in table 7.
(26) Repeat technique of (23) through (25) above, using settings and indications
listed in table 7.
18