TB 9-6625-1314-24
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-286, AN/GSM-287 and 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 ration
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 the
calibration procedure.
Table 2. Minimum Specifications of Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
AUTOTRANSFORMER
105 Vac to 125 Vac 1% Accuracy
Ridge, Model 9020A (9020A)
CALIBRATOR
Dc voltage:
Fluke, Model 5720A (5720A) (p/o
Range:
0 V to 1000 V
MIS-35947); w/amplifier, Fluke,
Accuracy: 0.0125%
Model 5725A/AR (5725A/AR)
Dc current:
100 A to 2 A
Range:
Accuracy: 0.05%
Ac voltage:
Range:
200 mV to 1000 V
Frequency: 20 Hz to 100 kHz
0.125%
Accuracy:
Ac current:
200 A to 2 A
Range:
Frequency: 20 Hz to 1 kHz
0.125%
Accuracy:
Dc voltage:
Fluke, Model 8840A/AF05
(AN/GSM-64D)
Range:
35 V
Accuracy:
0.01%
Range:
Accuracy:
Biddle Gray, Model 71-631
STANDARD
(7910328)
100 through 1 M
0.075%
Range:
Accuracy:
Beckman, Model CR10M
STANDARD
(8598965)
10 M in 1 M steps
0.25%