TB 9-6625-2280-35
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-287 and 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 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)
Weinschel, Model 9918, 9918-10dB,
ATTENUATOR (FIXED)
9918-20dB, and 9918-30dB (9918)
Attenuator range: 10 dB
Accuracy: 0.3 dB
Attenuator range: 20 dB
Accuracy: 0.5 dB
Attenuator range: 30 dB
Accuracy: 1.0 dB
Voltage range: 105 to 125 V ac
Ridge, Model 9020A
Accuracy: 1%
(9020A)
CALIBRATOR
Dc voltage range: 5.00 and 10.00 V dc
Fluke, Model 5720A (5700A/EP)
Accuracy: 1.2%
(p/o MIS-35947)
DIRECTIONAL COUPLER
Frequency range: 1 GHz
Wavecom, Model L901E
Coupling factor: 10 dB
(MIS-10409/2133)
FREQUENCY COUNTER
Fluke, Model PM6681/656
Accuracy: 1.25%
(PM6681/656)
Hewlett-Packard, Model 3458A
(3458A)
Accuracy: 0.01%
Dc voltage range: 150 V to 15.045 V dc
Accuracy: 0.0075%
Amplitude range: DC Offset
(OS-303/G)
measurement capability
-0.002 to +0.002 mVdc
POWER METER
Hewlett-Packard, Model E12-432A
Power range: 0. 1 to 9 mW
(MIS-30525) w/thermistor mount,
Accuracy: 1.125%
Hewlett-Packard, Model H75-478A
Must have VRF and Vcomp terminals
(7915907) or 8478B (8478B)