TB 9-6625-2267-24
Table 1. Calibration Description - Continued
Performance specifications
Accuracy: (% of reading + % of range)
Test instrument
parameters
4 1/2 digits (1999.9 maximum display)
Ac current2
Range: 0 to 2000 mA (in 5 ranges)
Frequency: 30 Hz to 10 kHz
Accuracy:
Range
30 Hz
50 Hz
5 kHz
10 kHz
200 A through
0.6 + 0.1
0.3 + .08
200 mA
2000 mA
N/A
Dc current
Range: 0 to 2000 mA (in 5 ranges)
Accuracy:
Range: 200 A through 200 mA.......... 0.1 + 0.01
2000 mA................................... 0.2 + 0.01
Range: 0 to 20 M (in 6 ranges)
Accuracy:
Range:
200 .....................................
0.1 +
0.015
2 k .......................................
0.1 +
0.005
20, 200, and 2000 k ............
0.05 +
0.005
20 M ....................................
0.2 +
0.005
1Volts/hertz
product not to exceed 2 x 107.
2Ac current verified during dc current check since same shunt resistors are utilized for both checks.
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-286; AN/GSM-287; or AN/GSM-705. Alternate items may be used
by the calibrating activity. The items selected must be verified to perform satisfactorily
prior to use and must bear evidence of current calibration. The equipment must meet or
provide a four-to-one ratio between the standard and TI. Where the four-to-one ratio
cannot be met, the actual accuracy of the equipment selected is shown in parenthesis.
5. Accessories Required. The accessories required for this calibration are common
usage accessories, issued as indicated in paragraph 4 above, and are not listed in this
calibration procedure.
