TB 9-6625-1999-35
Table 1. Calibration Description - Continued
Test instrument parameters
Performance specifications
Frequency
Range: 50 kHz to 65 MHz
Accuracy: 1%
Drift: 50 parts 106 during a 10 minute interval
Maximum carrier set
≥1.05 V rms over entire range
Modulation
Range: 0 to 100%
Accuracy: 5% FS for modulation frequencies to 10 Hz
Distortion: <1%
RF output
Within 1 dB into 50 Ω over entire frequency range at
any voltage setting
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. 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. The
accessories required for this
calibration are common
usage accessories issued as indicated in paragraph 4 above, and are not listed in this
Table 2. Minimum Specifications of
Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
AUDIO ANALYZER
Range: 400 Hz and 1 kHz
Boonton, Model 1121 (1121)
Capability: <1% distortion
Range: 105 to 125 V ac
Ridge, Model 9020A
(9020A)
Accuracy: 1%
Range: 380 Hz to 65.650 MHZ
Fluke, Model PM6681/656
Accuracy: 0.0025%
(PM6681/656)
MEASURING RECEIVER
Modulation: 45 to 95%
Hewlett-Packard, Model 8902A
w/sensor, Hewlett-Packard, Model
Accuracy: 2%
11722A (11722A)
Range: -208 to +312 V dc
Fluke, Model 8840A/AF05
and 3.2 V ac
(AN/GSM-64D)
Accuracy: 1%
Range: 50 to 80 mV/div
(OS-303/G)
Accuracy: 3%
TRUE RMS VOLMETER
Range: 0.8 to 1.05 V ac
Fluke, Model 8922A/AA
(8922A/AA)
Accuracy: 2.5%