TB 9-6625-142-24
(4) Repeat technique of (2) and (3) above for the remaining TI ranges, calibrator
outputs and limits in table 4. TI will indicate within the limits for the range and frequency
being tested in table 4.
(5) Set calibrator output to minimum.
Table 4. AC Voltage Accuracy.
Test Instrument
Calibrator
Limits
Output
RANGE
(V ac)
(V ac)
(V ac)
Min
Max
180 m @ 45 Hz
200 mV
176.9 m
193.1 m
180 m @ 500 Hz
200 mV
176.9 m
193.1 m
1.8 @ 45 Hz
2
1.769
1.831
1.8 @ 500 Hz
2
1.769
1.831
18 @ 45 Hz
20
17.69
18.31
18 @ 500 Hz
20
17.69
18.31
180 @ 45 Hz
200
176.9
183.1
180 @ 500 Hz
200
176.9
183.1
540 @ 45 Hz
600
531.5
548.5
540 @ 500 Hz
600
531.5
548.5
b. Adjustments. No adjustments can be made.
10. DC Current
a. Performance Check
Connect TI mA and COM inputs to the calibrator.
(1)
(DC Amps) and 200 range.
(2)
Set TI function switch to
(3) Set calibrator output for 180 A. TI will indicate within limits specified for the
200 μA range in table 5.
(4) Repeat technique of (3) above for the 2 mA through 200 mA ranges. TI will
indicate within limits specified for those ranges in table 5.
(5) Set calibrator output to minimum. Connect TI 10A and COM to the calibrator
amplifier CURRENT OUTPUT terminals, observing polarity.
(6) Set calibrator output to 9 A. TI will indicate within limits specified for the
10 A range in table 5.
(7)
Set calibrator output to minimum.
Table 5. DC Current Accuracy.
Test Instrument
Limits
Calibrator Output
RANGE
(DC Amps)
(DC Amps)
(DC Amps)
Min
Max
180
200
177.2
182.8
1.8 m
2m
1.772 m
1.828 m
18 m
20 m
17.72 m
18.28 m
180 m
200 m
177.2 m
182.8 m
1,2
9
10
8.790
9.210
Move test lead from TI mA terminal to TI 10A terminal.
1
Connect TI to the calibrator amplifier CURRENT OUTPUT terminals, observing polarity.
2
