TB 9-6625-2170-24
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Sets 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 exceed the
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 4 above, and are not listed in this calibration
procedure.
Table 2. Minimum Specifications of Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
CALIBRATOR
Range: 3 mV to 100 V
Fluke, Model 5720A (5720A)
(p/o MIS-35947)
Frequency: 10 Hz to >300 kHz
1 r0.5%
Accuracy:
Fluke, Model 8840A/AF05
Range: 4.98 to 5.51 V dc
(AN/GSM-64D)
Accuracy: r0.476%
Capabilities
Agilent, OS-3-3/G (OS-303/G)
Vertical: 200 mV/div dc coupling
Horizontal: 200 ms/div
RATIO TRANSFORMER
Range: 0.001
ESI, Model DT72A (7915908)
Frequency: 1 kHz
Accuracy:1
SIGNAL GENERATOR
Frequency: 10 Hz to 100 kHz
Tektronix, Type SG-505
Amplitude range: -10 to 0 dBm
(MIS-30526/11)
Distortion: <0.005%
TRUE RMS VOLTMETER
Range: 1 mV to 1.58 V
Fluke, Model 8922A/AA
(8922A/AA)
Accuracy: r0.75%
CALIBRATION PROCESS
6. Preliminary Instructions
a. The instructions outlined in paragraphs 6 and 7 are preparatory to the calibration
process. Personnel should become familiar with the entire bulletin before beginning the
calibration.
b. Items of equipment used in this procedure are referenced within the text by common
name as listed in table 2.
