TB 55-4920-428.35
SECTION II
EQUIPMENT REQUIREMENTS
4. Equipment Required. Table 3 identifies the specific equipment to be used in this calibration pro-
cedure. This equipment is issued with Secondary Transfer Calibration Standards Sets, AN/GSM-286.
Alternate items may be used by the calibrating activity when the equipment listed in table 3 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 3. The accuracies listed in table 3 provide a four-to-one ratio between the standard and
TI.
above and are used in this calibration procedure. When necessary, these items may be substituted by
equivalent items, unless specifically prohibited.
Table 3. Minimum Specifications of Equipment Required
(Modified or Not Modified Test Set)
Manufacturer,
Model, and
Minimum Use
Part Number
Specifications
Item
Common Name
A1
General Radio
115 to l17 vac
Range:
AUTOTRANSFORMER
Model
Accuracy:
1.0%
(Variable Power
W10MT3AS3
7910809
NJE
0 to 5.0 vdc
A2
DC POWER SUPPLY
Range:
Model
CS36CR30
7907346-2
Hewlett-Packard
395 to 405 Hz
A3
ELECTRONIC
Range:
Model
Accuracy:
.2%
COUNTER
5345A
(MIS 28754 Type 1)
Hewlett-Packard
DIGITAL
A4
115 to l17 vac
Range:
Model 3456A
+2.0 vac
Accuracy:
7
