TB 9-4931-217-40
Table 7. Second Most Significant Dial Calibration
Test instrument MAIN DIAL
Indications when null
Resistance measuring
Initial
is obtained
system dial settings
settings
Min
Max
001000.010
0.09(-)0
0.0998
0.09(-)2
002000.010
0.19(-)0
0.1998
0.19(--)2
003000.010
0.29(-)0
0.2997
0.29(-)3
004000.010
0.39(-)0
0.3997
0.39(-)3
005000.010
0.49(-)0
0.4996
0.49(-)4
006000.010
0.59(-)0
0.5996
0.59(-)4
007000.010
0.69(-)0
0.6995
0.69(-)5
008000.010
0.79(-)0
0.7995
0.79(-)5
009000.010
0.89(-)0
0.8994
0.8(-)06
010000.010
0.99(-)0
0.9994
0.9(-)06
011000.010
0.(-)9(-)0
0.(-)993
0.(-)(-)07
(27) Set resistance measuring system dials to 000100.010.
(28) Turn MAIN DIAL to 0.00 (-)0.
(29) Repeat (4) (b) and (c) through (8) above. Adjust only the least significant MAIN
DIAL control for best null indication. MAIN DIAL indication will be within limits
specified in table 8.
(30) Repeat technique of (27) through (29) above using settings and indications listed
in table 8.
Table 8. Third Most Significant Dial Calibration
Test instrument MAIN DIAL
Indications when null
Resistance measuring
Initial
is obtained
system dial settings
settings
Min
Max
000100.010
0.00(-)0
0.0099
0.00(-)1
000200.010
0.01(-)0
0.0199
0.01(-)1
000300.010
0.02(-)0
0.0299
0.02(-)1
000400.010
0.03(-)0
0.0399
0.03(-)1
000500.010
0.04(-)0
0.0499
0.04(-)1
000600.010
0.05(-)0
0.0599
0.05(-)1
000700.010
0.06(-)0
0.0699
0.06(-)1
000800.010
0.07(-)0
0.0799
0.07(-)1
000900.010
0.08(-)0
0.0899
0.08(-)1
001000.010
0.09(-)0
0.0998
0.09(-)2
001100.010
0.9(-)(-)0
0.9(-)98
0.9(-)(-)2
(31) Set RANGE switch to 100 k .
(32) Set resistance measuring system dials to 000100.010.
(33) Turn MAIN DIAL to 00010.
(34) Repeat (4) (b) and (c) through (8) above. Adjust only the least significant MAIN
DIAL control for best null indication. MAIN DIAL indication will be within limits
specified in table 9.
19
