TB 9-6625-2210-24
Table 1. Calibration Description - Continued
Test instrument parameters
Performance specifications
Filters:1
Range: As per Bell Pub 41009
C-message
Accuracy: As per Bell Pub 41009
3 kHz flat
15 kHz flat
Program
50 kbit
1010 Hz notch
Range: 0 to 90 dBm
Noise:1
Accuracy: 1 dB
Range: 0 to 120 units
P/AR:1
Accuracy: 4, 0 to 30 units
2, 30 to 110 units
4, 110 to 120 units
1Parameters
are set and checked by software on alignment diskette.
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-286, 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
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 is shown in parenthesis.
Table 2. Minimum Specifications of Equipment Required
Minimum use
Manufacturer and model
Common name
specifications
(part number)
AUDIO ANALYZER
Range: 0 to -50 dB
Boonton, Model 1121 (1121)
Accuracy:
3%
CALIBRATOR
Range: 20 Hz to 110 kHz
Fluke, Model 5720A (5720A)
7 mV to 8 V
(p/o MIS-35947)
Accuracy:
0.28%
FREQUENCY COUNTER
Range: 20 Hz to 85 kHz
Fluke PM6681/656
(PM6681/656)
Accuracy:
0.01%
Range: 7 mV to 4 V ac
Agilent, Model 3458A (3458A)
0.3 to 28 mV dc
Accuracy:
0.28% 1004 Hz
0.8% 110 kHz
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 accessory is also required for this calibration:
DSP CALIBRATION DISKETTE REV 9.9 (40244/03 000035).
