TB 9-6625-2102-24
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Sets, AN/GSM-286, AN/GSM-287, 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
four-to-one ratio between the standard and the 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 accessories are also required for this
calibration: 50 : feedthrough termination, BNC plug to BNC jack, Hewlett-Packard, Model
11048C (11048C).
Table 2. Minimum Specifications of Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
AUDIO ANALYZER
Range: 100 Hz and 20 kHz
Boonton, Model 1121 (1121)
Accuracy: 0.5%
Capability: <0.125% distortion
FREQUENCY COUNTER
Range: 200 kHz and 12 MHz
Fluke, Model PM6681/656
Accuracy: 0.5%
(PM6681/656)
Range: 52 s to 48 ms
Accuracy: 0.5%
Range: -14.97 to 15.03 V dc
Agilent, Model 3458A (3458A)
Accuracy: 0.05%
Range: 4.5 mV to 5 V ac
Accuracy: 1 %
Range: 15 V p-p
Agilent, OS-303/G (OS-303/G)
Risetime: < 25 ns
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.
