TB 9-6625-1098-24
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-286; AN/GSM-287 or 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
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
calibration procedure. The following peculiar accessory is also required for this calibration:
Voltage Divider, 600 , double banana plug to triple banana jack, Agilent, model 11047A
(7911560).
Table 2. Minimum Specifications of Equipment Required
Minimum use
Manufacturer and model
Common name
specifications
(part number)
Range: 249 V to 306 V rms
Fluke, Model 5720A (5720A) (p/o
CALIBRATOR
MIS-35947); w amplifier, Fluke
Accuracy:
0.5%
5725A/AR (5725A/AR)
Range: 0 to 30 V dc
Fluke, Model 8840A/AF05
(AN/GSM-64D)
Accuracy:
0.5%
RATIO
Ratio:
0.001
ESI, Model DT72A (7915908)
Accuracy:
0.1%
SPECTRUM
Range: 500 Hz to 100 kHz
Hewlett Packard, Model 3585A
ANALYZER
Accuracy: <80 dB
TRUE RMS
Range: 1 mV to 1 V rms
Fluke, Model 8922A/AA
(8922A/AA)
Accuracy:
1%
TUNABLE ACTIVE
Range: 500 Hz to 600 kHz
Krohn-Hite Model 3940 (3940)
FILTER
Roll-off: 24 dB/octave bandpass
48 dB/octave low pass
