TB 9-5985-313-40
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Reference Calibration
Standards Set, NSN 4931-00-621-7878. 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
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 the
calibration procedure. The following peculiar accessories are also required for this
calibration: RF Power Amplifier, Ophir RF Inc., Model XRF733 and BNC jack to thermistor
mount, Hewlett- Packard, Model 11528A (if not available, fabricate cable as shown in figure
Table 2. Minimum Specifications of Equipment Required
Manufacturer and model
Common name
Minimum use specifications
(part number)
DIRECTIONAL COUPLER
Range: 10 to 400 MHz:
(7916259)
(W/THERMISTOR
400 to 1000 MHz
(7913995)
MOUNTS) (POWER
Accuracy: Calibrated by
STANDARD ASSEMBLY)
APSL; NO SUBSTITUTE
Range: 0 to 10 V dc
Hewlett Packard, Model 3458A (3458A)
Accuracy: 0.01%
Range: Dc
Agilent, OS-303/G (OS-303/G)
Accuracy: 3%
1
POWER BRIDGE
No Substitute
NBS, Type II
RF POWER METER
Range: 50 W, 10 to 1000 MHz
Bird, Model 4421 (4421) w/ Directional
power sensors, Model 4021 and 4022
(4021 and 4022)
SIGNAL GENERATOR
Range: 10 to 1000 MHz
Aeroflex, Model 2023B or (SG-1207/U)
SPECTRUM ANALYZER
Range: 10 to 1000 MHz
(AN/USM-677)
Input level: 10 dBm
Display range: 60 dB
See footnote at end of table.
