TB 9-6625-1947-24
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, AN/GSM-287 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. The accuracies listed in table 2
provide a four-to-one ratio between the standard and TI. Where the four-to-one ration
cannot be met, the actual accuracy of the equipment selected is shown in parenthesis.
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
Table 2. Minimum Specifications of Equipment Required
Manufacturer and model
Minimum use specifications
(part number)
Common name
1
AUDIO ANALYZER
Range: 10 Hz to 100 kHz
Boonton, Model 1121 (1121)
Accuracy: <0.25% distortion
CALIBRATOR
Range: 2.40 to 2.60 V dc
Fluke, Model 5720A (5720A) (p/o
MIS-35947)
Range: 9.7 Hz to 10.3 MHz
Fluke, Model PM6681/656
(PM6681/656)
Accuracy: 0.5%
Fluke, Model 8840A/AF05
Range: 7 mV to 30.9 V dc
100 mV to 3.2232 V ac
(AN/GSM-64D)
Accuracy: 0.15% dc
0.125% ac
A
2
Biddle-Gray, Model 71-631
Range: 1 and 4.7 k
ccuracy: 1%
(7910328)
SPECTRUM ANALYZER
Range: 10 Hz to 10 MHz
(AN/USM-677)
Accuracy: <0.25% distortion
THERMAL CONVERTER
Range: 10 Hz to 10 MHz
Ballantine, Model 1395A-1
Accuracy: 0.0625%
(7913198-2)
0.1% to 100 kHz
0.2% to 1 MHz
0.4% to 10 MHz
Range: 1 mV
Fluke, Model 8922A/AA
Resolution: At least 2 V
(8922A/AA)
1Spectrum
analyzer can be used.
2Two
required.