TB 9-6625-388-24
Table 7. Resistance Accuracy - Continued
Test instrument settings
Decade resistor indications (ohms)
A1
B1
Multiply By
Decade dials
switch settings
1000
100
10
1
Min
Max
Min
Max
100/1
0
0
0
1
97.5
102.5
98.5
101.5
10/1
0
0
10
0
997.5
1002.5
998.5
1001.5
10/1
0
0
9
0
897.5
902.5
898.5
901.5
10/1
0
0
8
0
797.5
802.5
798.5
801.5
10/1
0
0
7
0
697.5
702.5
698.5
701.5
10/1
0
0
6
0
597.5
602.5
598.5
601.5
10/1
0
0
5
0
497.5
502.5
498.5
501.5
10/1
0
0
4
0
397.5
402.5
398.5
401.5
10/1
0
0
3
0
297.5
302.5
298.5
301.5
10/1
0
0
2
0
197.5
202.5
198.5
201.5
10/1
0
0
1
0
97.5
102.5
98.5
101.5
1/1
0
10
0
0
997.5
1002.5
998.5
1001.5
1/1
0
9
0
0
897.5
902.5
898.5
901.5
1/1
0
8
0
0
797.5
802.5
798.5
801.5
1/1
0
7
0
0
697.5
702.5
698.5
701.5
1/1
0
6
0
0
597.5
602.5
598.5
601.5
1/1
0
5
0
0
497.5
502.5
498.5
501.5
1/1
0
4
0
0
397.5
402.5
398.5
401.5
1/1
0
3
0
0
297.5
302.5
298.5
301.5
1/1
0
2
0
0
197.5
202.5
198.5
201.5
1/1
0
1
0
0
97.5
102.5
98.5
101.5
1/1
9
0
0
0
8977.5
9022.5
8988.5
9013.5
1/4
4
0
0
0
997.5
1002.5
998.5
1001.5
1/9
9
0
0
0
997.5
1002.5
998.5
1001.5
1/10
9
0
0
0
897.5
902.3
898.6
901.4
2
90.152
1/100
9
0
0
0
89.76
90.24
89.85
1Column
A indications are for sets ZM-4A/U and ZM-4B/U purchased on Order Number 19629-P-50 and 6870-P-51. Column B
indications are for all other order numbers.
2Set decade resistor to 90 ohms and adjust TI for galvanometer balance.
b. Adjustments. No adjustments can be made.
12. Final Procedure
a. Deenergize and disconnect all equipment.
b. Turn TI BA switch to OUT (EXT for ZM-4( )/U) position and lock galvanometer.
c. Replace TI protective cover.
d. Annotate and affix DA label/form in accordance with TB 750-25.
11/(12 Blank)