TB 9-6625-2143-24
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, and AN/GSM-705. Alternate items may be
used by the calibrating activity when the equipment listed in table 2 is not available. 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. 5. 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:
Extender board, 10-pin (HP-5060-0091).
Table 2. Minimum Specifications of Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number
FREQUENCY COUNTER
Range: 9.5 to 10.5 kHz
Fluke, Model PM6681/656
Accuracy: 0.25 Hz
(PM6681/656)
FUNCTION/ARBITRARY
Agilent, Model 33250A
Resolution: 0.1 Hz
(33250A)
Amplitude range: +3.01 to +23.01 dBm
Accuracy: 0.1 dB
Range: 0 to 10.5 V dc
Agilent, Model 3458A
100 to 150 mV ac
(3458A)
Accuracy: 0.025%
SYNTHESIZER LEVEL
Agilent, Model
Accuracy: 0.1 Hz
3335AOPT 001K-06
(MIS-35938)
Amplitude range: -67.99 to +13.01 dB
Accuracy: 0.1 dB
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
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.