TB 9-6625-163-24
(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.
11. Ac Current
a. Performance Check
(1) Connect calibrator OUTPUT HI, LO to TI mA/A and COM inputs.
(2) Set TI to measure AC current by pressing buttons as in (a) through (c) below.
.
(a) Function, A~
(b) [Menu].
(c) Select <AC, DC>, [AC].
(3) Set calibrator output for 500 A at 60 Hz, OPR. If TI does not indicate within
limits specified in first row of table 6, perform b below.
(4) Repeat technique of (3) above, using settings and indications listed in table 6. If
TI does not indicate within limits specified in first row of table 6, perform b below.
Table 6. Ac Current Accuracy.
Calibrator
Test instrument
Output
Range/Function
Min
Max
500 A
60 Hz
500 A
496.80
A
503.20
A
10 kHz1
497.75
A
502.25
A
10 kHz1
5000
A
5000 A
4977.5
A
5022.5
A
50 mA2
4
mA
20 Hz
3.940 mA
4.060 mA
10 kHz1
30
mA
29.865 mA
30.135 mA
10 kHz1
300
mA
400 mA
296.25
mA
303.75
mA
400
mA
60 Hz
397.55
mA
402.45
mA
A3
5
1
kHz
5
A
4.9580 A
5.0420 A
1
kHz
10
A
4.955 A
5.045 A
Min/Max at 10 kHz adjusted as per manufacturer.
1
Set function switch to mA/A~
.
2
3 Set calibrator to standby. Connect calibrator amplifier CURRENT OUTPUT HI, LO to TI A and COM inputs.
(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.
12. Resistance
a. Performance Check
(1) Set TI function switch to Ω.
(2) Press the TI RANGE button to select the 500 Ω range.
(3) Connect a high quality short banana lead to TI V Ω and COM inputs.