TB 9-6625-2353-35
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-286 or AN/GSM-287. 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 exceed the
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.
usage accessories issued as indicated in paragraph 4 above, and are not listed in this
calibration procedure.
Manufacturer and model
(part
Common name
Minimum use specifications
number)
CALIBRATOR
Dc voltage:
Range: 0 to 1100 V
Fluke, Model 5720A (5700A/EP)
Accuracy: 0.038%
(p/o MIS-35947); w/amplifier, Fluke
5725A/AR (5725A/AR)
Dc current:
Range: 50 A to 10 A
Accuracy: 0.14%
Ac voltage:
Range: 0 to 1100 V
Frequency: 60 Hz to 100 Hz
Accuracy: 0.14%
POWER SUPPLY
Fluke, Model 410B/AT (MIS-10230)
Range: 0 to 5250 V dc
(MIS-45839)
1.25%
Accuracy:
6. Preliminary Instructions
process. Personnel should become familiar with the entire bulletin before beginning the
calibration.
b. Items of equipment used in this procedure are referenced within the text by common
name as listed in table 2.
c. Unless otherwise specified, verify the result of each test and, whenever the test
requirement is not met, take corrective action before continuing with the calibration.
Adjustments required to calibrate the TI are included in this procedure. Additional
maintenance information is contained in the manufacturers' manuals and/or technical
manuals for this TI.
