TB 9-6625-163-24
9. Ac Voltage
a. Performance Check
(1) Ensure that calibrator OUTPUT HI, LO is connected to TI V Ω and COM inputs.
(2) Set TI function switch to mV~.
(3) Set calibrator for an output of 5 mV at a frequency of 20 Hz, OPR. If TI does not
indicate within limits specified in first row of table 4, perform b below.
(4) Repeat technique of step (3) above for settings and indications listed in table 4.
If TI does not indicate within limits specified in table 4, perform b below.
Table 4. Ac Voltage Accuracy.
Calibrator output
Test instrument
Amplitude
Range/Function
Min
Max
5 mV
20 Hz
50 mV
4.865 mV
5.135 mV
50 mV
65 kHz
48.210 mV
51.790 mV
100 kHz
500 mV
47.85
mV
52.15
mV
250 mV
65 kHz
240.85
mV
259.15
mV
500 mV
45 Hz
498.25
mV
501.75
mV
1
100 mV
60 Hz
5V
0.0952 V
0.1048 V
500 mV
10 kHz
0.4945 V
0.5055 V
3V
100 kHz
2.8160 V
3.1840 V
15 V
50 V
14.435 V
15.565
V
500 V
10 kHz
500 V
497.75
V
502.25
V
1000 V
1000 V
993.5
V
1006.5
V
Set TI function switch to V~.
1
(5) Set calibrator output to minimum and disconnect equipment.
b. Adjustments. Complete all performance checks in paragraphs 8 through 14,
recording failures, then perform entire alignment procedure in paragraph 17.
10. Dc Current
a. Performance Check
(1) Connect calibrator OUTPUT HI, LO to TI mA/A and COM inputs.
(2) Set function switch to A~
.
(3) Set calibrator output for 500 A, OPR. If TI does not indicate within limits
specified in first row of table 5, perform b below.
(4) Repeat technique of step (3) above, using settings and indications listed in
Table 5. Dc Current Accuracy.
Calibrator
Test instrument
Output
Range/Function
Min
Max
500 A
500 A
499.42
A
500.58
A
5000 A
5000 A
4996.0
A
5004.0
A
1
0.1 mA
50
mA
0.090 mA
0.110 mA
50 mA
49.965 mA
50.035 mA
400 mA
400 mA
399.38
mA
400.62
mA
A2
5
5
A
4.9840 A
5.0160 A
10 A
10
A
9.968 A
10.032 A
Set function switch to mA/A~
.
1
Set calibrator to standby. Connect calibrator amplifier CURRENT OUTPUT HI, LO to TI A and COM inputs.
2