TB 9-6625-2271-40
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 minimum use
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 the calibration are common usage
accessories, issued as indicated in paragraph 4 above and are not listed in this calibration
procedure.
Table 2. Minimum Specifications of Equipment Required
Minimum use
Manufacturer and model
Common name
specifications
(part number)
Fluke Model 5790A
AC MEASUREMENT
Range: 20 Hz to 120 kHz
(13534003)
STANDARD
2.97 mV to 16.256 V
Accuracy: 0.125%
Fluke, Model 5720A (5720A) (p/o
CALIBRATOR
Range: 3 to 300 V dc
Accuracy: 0.2755%
MIS-35947); w amplifier, Fluke
5725A/AR (5725A/AR)
Range: 20 Hz to 100 kHz, 30 mV to 300 V
Accuracy: 0.25%
Range: 220 Hz , 1 mV
Accuracy: 0.25%
FREQUENCY COUNTER
Range: 20 Hz to 140 kHz
Fluke, Model PM6681/656
Accuracy: 2.5 ppm
(PM6681/656)
FUNCTION/ARBITRARY
Frequency range: 1200 Hz to 80 kHz
Agilent, Model 33250A (33250A)
0.25 dB @ 1200 Hz
Attenuator Accuracy:
0.5 dB @ 80 kHz
SPECTRUM ANALYZER1
Range: 1 kHz <-75 dBm
Hewlett-Packard, Model 3585A
(MIS-35951)
TIME/FREQUENCY
Range: 10 MHz
Datum, Model ET6000-75
Accuracy: 0.25 ppm
WORKSTATION
(13589305)
1Used
only for adjustments.