TB 9-6625-2045-35
SECTION II
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-286. Alternate items may be used by the calibrating activity when
the equipment listed in table 2 is not available. 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. The
accuracies listed in table provide a four-to-one ratio between the standard and TI.
may be substituted by equivalent items unless specifically prohibited.
Table 2. Minimum Specifications of Equipment Required
Minimum use
Manufacturer and model
Item
Common name
specifications
(part number)
A1
CAPACITANCE STANDARD Range: 0.0002 to 0.2 F
Arco, Model SS32 (7907233)
0.3%
Accuracy:
A2
FREQUENCY COUNTER
Range: 980 to 1020 Hz Hewlett-Packard, Model 5345A
(MIS-28754/1 Type 1)
0.7%
Accuracy:
A3
RESISTANCE BRIDGE
ESI, Model 230B (7912150-2)
Range: 30Ω to 17 kΩ
w/generator detector,
0.33%
Accuracy:
ESI Model 860A (791215-2)
A4
RESISTANCE STANDARD
Biddle-Gray, Model 601147-1
Range: 9Ω to 810 kΩ
(7910328)
0.33%
Accuracy:
Table 3. Accessories Required
Common name
Description
Item
(official nomenclature)
(part number)
B1
CABLE1
30-in., RG-58/U; double banana plug terminations (7907470)
B2
CABLE (TEST LEAD)
36-in., RG-58/U; BNC plug to double banana plug terminations
(7907471)
B3
LEAD
18-in., spade lug terminations (red) (7911292-10)
B4
LEAD
18-in., spade lug terminations (black) (7911292-9)
Two required.
SECTION III
6. Preliminary Instructions
process. Personnel should become familiar with the entire bulletin before beginning the
calibration.
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