TB 9-6625-2213-24
Table 1. Calibration Description - Continued
Test instrument
parameters
Performance specifications
Phase
Phase accuracy checked at 400 MHz (including phase response versus frequency)
Less than 1.5 + ( 3) = 4.5
V up 300 mVrms.
1300
2300
and 1000 mVrms only.
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
Standard Set AN/GSM-286; Set AN/GSM-287; or Set 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
calibration procedure. The following peculiar accessories are also required for this
calibration: Accessories Kit, Hewlett-Packard, Model 11570A (must be furnished with TI)
and Line Section Radio (adjustable airline), General Radio, Model 874LK20L.
Table 2. Minimum Specifications of Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
Ac voltage range: 105 to 125 V ac
Ridge, Model 9020A (9020A) or Ridge,
Accuracy: 1%
Model 9020F (9020F)
Fluke, Model PM6681/656
FREQUENCY
-7
(PM6681/656)
COUNTER
Accuracy: 2.5 x 10
Telonic, Model TLC14-3EF
LOW PASS FILTER
Cut off frequency: 14 MHz
(TLC14-3EF)
NO. 1
Insertion loss: <1.0 dB
20 to 24 MHz: 20 dB
LOW PASS FILTER
Cut off frequency: 30 MHz
Telonic, Model TLC30-4EF7
NO. 2
Insertion loss: <1.0 dB
(TLC30-4EF7
45 to 60 MHz: 40 dB
Telonic, Model TLC75-6EF1
LOW PASS FILTER
Cut off frequency: 75 MHz
(TLC75-6EF1)
NO. 3
Insertion loss: <1.0 dB
Stopband attenuation:
90 to 95 MHz: 32 dB
95 to 105 MHz: 42 dB
Telonic, Model TLC125-6EF1
LOW PASS FILTER
Cut off frequency: 125 MHz
(TLC125-6EF1)
NO. 4
Insertion loss: <1.0 dB
Stopband attenuation:
150 to 160 MHz: 32 dB
160 to 250 MHz: 42 dB