MIL-PRF-49293B
3.3 Design.
3.3.1 Calibration of the AN/PDR-75 reader. The AN/PDR-75 field reader should be
calibrated in accordance with the calibration procedure described in Department of the
Army Technical Bulletin, TB 9-6665-286-35. The reference locket set in Maintenance
Kit, MK-2512/PDR-75 should be calibrated every 6 months by the U.S. Army Test
Measurement and Diagnostic Equipment (TMDE) Support Group.
3.3.2 Finish. All surfaces of the CP-696/PDR-75 requiring a protective coating should be
finished with a green chemical resistant polyurethane coating.
3.3.3 Interchangeability. Like units, subassemblies and replaceable parts should be
electrically and mechanically interchangeable.
3.3.3.1 Electrical and mechanical interchangeability demonstration test (EMIDT). The
EMIDT should be conducted to validate that the equipment possesses such functional and
physical characteristics as to be equivalent in performance to another item of identical
purpose. The interchanged items should be capable of exchange with identical purpose
items without selection for fit or performance and without alteration of the item or
adjoining items, except for adjustment.
3.4 Dimensions.
3.4.1 Size and Weight. The total weight of the Radiac Set, AN/PDR-75 should not exceed
35 lbs. (15.8 Kg). The external dimensions of the CP-696/PDR-75 should not exceed:
Width: 8.09 in. (205mm)
Height: 7.52 in. (191mm)
Depth: 13.11 in. (333mm)
The external dimensions of the carrying case should not exceed:
Width: 13.16 in. (334mm)
Height: 12.50 in. (315mm)
Depth: 21.75 in. (555mm)
3.5 Performance requirements.
3.5.1 Accuracy. The AN/PDR-75, when reading DT-236/PDR-75 dosimeters, should, as
a system, have an accuracy of ±30 percent or ±15 cGy below 50 cGy of the true dose
delivered to the dosimeter at the temperature limits of -25ºF (-32ºC) and +125ºF (+52ºC)
(See 4.5.1).
3.5.2 Precision. DT-236/PDR-75 s dosed to 500 cGy and read on the AN/PDR-75, should
exhibit readings of ±5% of its own mean with a 95% confidence level (See 4.5.2).
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