TB 9-6625-2273-50
EQUIPMENT REQUIREMENTS
4. Equipment
Required. Table 2
identifies the
specific equipment to be
used in this
calibration procedure. This equipment is issued with Secondary Reference Calibration
Standard 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
calibration procedure. The following peculiar accessories are also required for this
calibration: Precision termination, 50 Ω BNC feedthrough, 0.1%, dc to 100 kHz,
Tektronix, Type 011-0049-01, and dc blocking capacitor, Tektronix, Type 015-0221-00.
Table 2. Minimum Specifications of
Equipment Required
Common name
Minimum use specifications
Manufacturer and model
(part number)
FREQUENCY COUNTER
Frequency:
Fluke, Model PM6681/656
Range: 10 Hz to 500 MHz
(PM6681/656)
Accuracy: 0.25 PPM
Ac voltage:
Hewlett-Packard, Model 3458A
Range 18.5 mV to 1.96 V
(3458A)
Frequency: 20 Hz to 100 kHz
Accuracy: 0.375%
Range: 1.5 to 10 mV
Frequency: 50 kHz
Accuracy: 1.25%
Dc Voltage:
Range: 0 to 3 mV
Accuracy: 0.25%
MEASURING RECEIVER
Hewlett-Packard, Model 8902A
Range: 18.6 mV to 1.83 V
w/sensor, Hewlett-Packard, Model
Accuracy: 0.375% 100 kHz to 100 MHz
11722A (11722A)
Accuracy: 0.75% > 100 to 250 MHz
Accuracy: 1.0% > 250 to 500 MHz
SPECTRUM ANALYZER
Range: 20 Hz to 5 MHz
Hewlett-Packard, Model 3585B
NO. 1
(MIS-35951)
Level range: -55 dBm to + 20 dBm
SPECTRUM ANALYZER
Range: 10 MHz to 2.5 GHz
(AN/USM-677)
NO. 2
Frequency response: 3.0 dB
Level range: -40 dBm to + 20 dBm