TB 9-6625-2004-35
Standards Set AN/GSM-286, AN/GSM-287, and 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 minimum use specifications listed in table 2. The accuracies listed
in table 2 provide a four-to-one ratio between the standard and TI.
5. Accessories Required.
The accessories required for the 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
Common name
Minimum use
Manufacturer and model
specifications
(part number)
ATTENUATOR
Range: 0 to 120 dB
Hewlett-Packard, Model 355D
(355D)
MEASURING RECEIVER
Frequency range: 50 to 750 MHz
Measuring Receiver system N5530S
consisting of: Spectrum Analyzer
FM Deviation:
20 to 300 kHz
Accuracy: 1% of reading 1 digit
Agilent, Model E4440A (E4440A),
Power Meter Agilent, Model
E4419B (E4419B), and Sensor
Module Agilent, Model N5532A opt
504 (504)
Range: 189 to 201 V dc
Fluke, Model 8840A/AF-05
Accuracy: 0.75%
(AN/GSM-64D)
Range: 18 to 990 MHz
SYNTHESIZED SIGNAL
Anritsu, Model 68369NV
Accuracy: 2.5%
(68369NV)
Deviation: 1 to 20 kHz
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. Additional
maintenance information is contained in TM 11-6625-400-35 for this TI.
