TB 9-6625-2020-24
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-286 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 exceed the
minimum use specifications listed in table 2.
5. Accessories Required. The accessories required for this calibration are issued as
indicated in paragraph 4 above. Common usage accessories are not listed in this
calibration procedure. The following peculiar accessories are also required for this
calibration: Extender, Tektronix Type 067-0645-02 and Power Module, Tektronix TM515.
Table 2. Minimum Specifications of Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
CALIBRATOR
Range: 180 mV to 1000 V dc
Fluke, Model 5720A (5720A)
Accuracy: 0.042%
(p/o MIS-35947); w amplifier,
Fluke 5725A/AR (5725A/AR))
A
Range: 190 to 19 M
0.151%
ccuracy: 190
0.138%
1.9 k to 1.9 M
0.263%
19 M
Range: 180 A to 1.8 A dc
Accuracy: 0.069%
Range: 0.7746 mV to 500 V ac
Frequency: 20 Hz to 20 kHz
Accuracy: 0.264%, 20 Hz and 20 kHz
0.153%, 50 Hz
0.312%, 1 kHz
Range: 0 to 15.76 V dc
Fluke, Model 8840A/AF05
Accuracy: 0.016%
(AN/GSM-64D)
CALIBRATION PROCESS FOR TYPE DM 502
6. Preliminary Instructions
a. The instructions outlined in paragraphs 6 and 7 are preparatory to the calibration
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.