TB 9-6625-1947-35
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-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 ratio 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
AUDIO ANALYZER
Range: 10 Hz to 500 kHz
Boonton, Model 1121 (1121)
1
Accuracy: <0.25% distortion
Range: 105 to 125 V ac
General Radio, Type W10MT3AS3
Accuracy: 1%
(7910809) or Ridge, Model 9020A
(9020A), or Ridge, Model 9020F
(9020F)
CALIBRATOR
Range: 2.40 to 2.60 V dc
Fluke, Model 5720A (5700A/EP)
Range: 9.7 Hz to 10.3 MHz
Fluke, Model PM6681/656
Accuracy: 0.5%
(PM6681/656)
Range: 7 mV to 30.9 V dc
Fluke, Model 8840A/AF05
100 mV to 3.2232 V ac
(AN/GSM-64D)
Accuracy: 0.15% dc
0.125% ac
Range: 1 and 4.7 kΩ
Biddle-Gray, Model 71-631
(7910328)
Accuracy: 1%
SPECTRUM ANALYZER
Range: 10 Hz to 10 MHz
Hewlett-Packard, Model 3585A
Accuracy: <0.25% distortion
(MIS-35951)
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.