TB 9-6625-112-24
10. Resistance
a. Performance Check
and COM to calibrator.
(1) Connect TI
.
and range to 190
(2) Set TI rotary switch to
(3) Set calibrator output to 190.0
nominal (2-wire comp: ON).
(4) Rotate calibrator knob below EDIT FIELD pushbutton to adjust calibrator
display indication to equal TI indication. Calibrator err display indication will be within
limits specified in first row of table 4.
(5) Repeat technique of (2) thru (4) above, using the settings and indications listed
Table 4. Resistance Accuracy
Calibrator
Range
Min
Max
%
Output
190
200
187.6
192.4
1.26%
1.9 k
2
k
1.876
1.924
k
1.26%
k 1
19
20
k
18.76
k
19.24
k
1.26%
190
k
200
k
187.6
k
192.4
k
1.26%
19
M
20
M
18.57
M
19.43
M
2.26%
Calibrator 2-wire comp to OFF.
1
b. Adjustments. No adjustments can be made.
11. Duty Cycle
a. Performance Check
and COM to function generator.
(1)
Connect TI
(2) Set TI rotary switch DUTY CYCLE %.
(3) Set function generator for a 180 Hz square wave output. Adjust the output
amplitude for a stable reading.
(4) TI shall read 48.48% to 51.52% duty cycle.
b. Adjustments. No adjustments can be made.
12. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label 163 annotated block (a), with parameters Dwell and
RPM and block (b), not calibrated in accordance with TB 750-25.
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