TB 9-6625-975-24
NOTE
While performing resistance accuracy checks in table 4, add
resistance standards no. 2, 3, and 4 to resistance standard no. 1
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 no. 4.
(6) While rotating cranks adjust resistance standard no. 1 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.
CALIBRATION PROCESS FOR AUL MODEL 1602
12. Preliminary Instructions
a. The instructions outlined in paragraphs 12 and 13 are preparatory to the calibration
process. Personnel should become familiar with the entire bulletin before beginning the
calibration.
b. Items of equipment used in this procedure are referenced within the text by common
name as listed in table 2.
c. Unless otherwise specified, verify the result of each test and, whenever the test
requirement is not met, take corrective action before continuing with the calibration.
Adjustments required to calibrate the TI are included in this procedure. Additional
maintenance information is contained in the manufacturers' manual for this TI.
d. Unless otherwise specified, all controls and control settings refer to the TI.