TB 9-6625-164-24
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; AN/GSM-287; or AN/GSM-440. 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 parentheses.
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.
Manufacturer and model
Common name
Minimum use specifications
(part number)
CALIBRATOR
Range: +10 to 70 dBm @ 1 kHz
Fluke, Model 5720A (5720A)
Frequency Range: 250 to 4000 Hz
(p/o MIS-35947); w/ amplifier,
Accuracy:
1%
Fluke 5725A/AR (5725A/AR)
Range: 250 to 4000 Hz
Fluke, Model PM6681/656
COUNTER
Accuracy:
0.0025%
(PM6681/656)
Range: 160 mV rms to 2 V rms @1 kHz
Hewlett Packard, Model
Accuracy:
1.39%
3458A (3458A)
Range: 600 Ω
IET Labs, HARS-LX-9-0.001
STANDARD
Accuracy:
1.0 %
(HARS-LX-9-0.001)
SPECTRUM ANALYZER Range: 4 to 16 kHz
Agilent, Model E4407B-H76
Accuracy:
1.6dB
(AN/USM-677)
SECTION III
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.
c. Unless otherwise specified, verify the result of each test and, whenever the test
requirement is not met, take corrective action before continuing with the calibration.
Adjustments required to calibrate the TI are included in this procedure.
d. Unless otherwise specified, all controls and control settings refer to the TI.
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