TB 9-6625-2021-35
4
SECTION II
EQUIPMENT REQUIREMENTS
4. Equipment Required. Table 2 identifies the specific equipment to be used in this
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-286. Alternate items may be used by the calibrating activity. The
item 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 2 provide a four-to-one ratio between the
standard and TI.
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 this
calibration procedure.
Table 2. Minimum Specifications of Equipment Required
Common Name
Minimum use specifications
Manufacturer and model
(part number)
AUTOTRANSFORMER Range: 105 to 125 V ac General Radio W10MT3AS3
(7910809) or Ridge, Model
9020A (9020A), or Ridge,
Model 9020F (9020F)
FREQUENCY
DIFFERENCE METER
Accuracy: <±1.25 parts in 10
10
Tracor, Model 527E (527E)
FUNCTION
GENERATOR
Function: Sinewave, 50Ω
Frequency: 10 Hz to 10 MHz
Amplitude: 1 to 200 mVp-p
(SG-1288/G)
MULTIMETER Range: -14.95 to +15.05 V dc
Accuracy: ±0.08%
John Fluke, Model 8840A/AF
(AN/GSM-64D)
SIGNAL GENERATOR
Frequency: 10 MHz to 18 GHz
Amplitude: -50 to –13 dBm
Wiltron, Model 68347M
TIME/FREQUENCY
WORKSTATION
Frequency: 1 MHz
Accuracy: <± 1.0 part in 10
11
Autek Systems Corp., Model
620 (MIS-38946)
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