TB 9-6625-975-35
(4) Repeat technique of (2) and (3) above for settings and indications listed in table
Table 4. Resistance Accuracy
Resistance standard indications
(MΩ)
Test instrument
I-48( ), ZM-21( )/U,
meter
Resistance standard
Biddle, Models 7675, 7676-1, and
indications
initial settings
Winslow, Model 5G10001
Min
Max
(MΩ)
(MΩ)
10
102
9.25 (9)
10.25 (11)
100
1003
95
105
1000
1000
900
1100
4
1Accuracies
in parentheses are for Biddle, Models 799, 7679, 7679-1, and 210359.
2Connect
equipment as shown in figure 2, inserting resistance standard (A3).
3Substitute resistance standard (A4) for (A3).
4Substitute resistance standard (A5) for (A4).
NOTE
While performing resistance accuracy checks in table 4, add
resistance standards (A3, A4, and A5) to resistance standard
(A2) as required for appropriate megohm ranges.
NOTE
Perform (5) through (9) below for models 7676-1, 7679, and
7679-1 having additional ohms range scale and range switch.
(5) Set range selector switch to OHMS and remove resistance standard (A5).
(6) While rotating cranks adjust resistance standard (A2) for an indication of 100
ohms on meter. Resistance standard will indicate between 95 and 105 ohms.
(7) While rotating crank, adjust resistance standard for an indication of 1000 ohms
on meter. Resistance standard will indicate between 900 and 1100 ohms.
(8) While rotating crank, adjust resistance standard for an indication of 5 kilohms
on meter. Resistance standard will indicate between 4500 and 5500 ohms.
(9) Set range selector switch to MEGOHMS
b. Adjustments. No adjustments can be made.
11. Final Procedure
a. Deenergize and disconnect all equipment and reinstall protective cover on TI
b. Annotate and affix DA Label/Form in accordance with TB 750-25.
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