1、 MIL-PRF-49293B 13 September 2011 SUPERSEDING MIL-PRF-49293A03 July 1997PERFORMANCE SPECIFICATION RADIAC SET, AN/PDR-75 This performance specification is approved for use by USACECOM, Department of the Army and is available for use by all Departments and Agencies of the Department of Defense. 1. SCO
2、PE. 1.1 Scope. This performance specification covers the Radiac Set, AN/PDR-75. 2. APPLICABLE DOCUMENTS. 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents in other sections of this specification or recom
3、mended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Gover
4、nment documents. 2.2.1 Specifications, Standards and Handbooks. The following specifications, standards and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the Department of Defense Index of Specific
5、ations and Standards (DoDISS) and supplement thereto, cited in the solicitation (See 6.2). Handbooks are for guidance only and therefore are not mandatory. AMSC N/A FSC 5855 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Comments, suggestions, or questions on this
6、document should be addressed to: Communications-Electronics RDEC ATTN: RDER-PRQ-QE Fort Monmouth, NJ 07703-5201or emailed to mike.g.williamsus.army.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/as
7、sist.daps.dla.mil. INCH-POUND Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49293B - 2 - HANDBOOKS DEPARTMENT OF DEFENSE MIL-HDBK-454 Standard General Requirements for E
8、lectronic Equipment. MIL-HDBK-781 Reliability Design Qualification and Production Acceptance Tests. (Unless otherwise indicated, copies of the above specification, standards and handbooks are available at https:/assist.daps.dla.mil.) 2.2.2 Other Government documents, drawings and publications. The f
9、ollowing Government documents, drawings, and publications form a part of this specification to the extent specified herein. Unless otherwise specified, the issues should be those in effect on the date of the solicitation. PUBLICATIONS EL-CP-5111-0002A - Nuclear Survivability Requirements for Detecto
10、r, Radiac DT-236/PD and Computer Indicator, CP-696( )UD, 18 March 1974 TB 9-6665-286-35 - Calibration Procedure for Radiac Set, AN/PDR-75 MK-2512/PDR-75 - Maintenance Kit (Copies of documents, drawings and publications required by contractors in connection with specific procurement functions should
11、be obtained from the procuring activity or as directed by the contracting officer). 2.3 Non-Government Publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DoD adopted are those listed in
12、the issue of the DoDISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DoDISS are the issues of the documents cited in the solicitation. (See 6.2). AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) ANSI C63.14-1994 - Electromagnetic Compatibility (EMC) et
13、c.; Dictionary for Technologies of (Application for copies should be addressed to http:/www.ansi.org/contact_us/contact_us.aspx?menuid=contact). 2.4 Order of Precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes prec
14、edence. Nothing in this Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49293B - 3 - document, however, supersedes applicable laws and regulations unless a specific exempt
15、ion has been obtained. 3. REQUIREMENTS 3.1 AN/PDR-75 System Description. The AN/PDR-75 Radiac Set consists of the Computer Indicator Radiac CP-696/PDR-75 (Reader), the Carrying Case CY-8420/PDR-75 and three power cables. The Dosimeter (DT-236/PDR-75) is used with but not a part of the Radiac Set. It
16、 measures neutrons and gammas from nuclear detonations and residual neutrons and gammas from contamination. The dosimeter is contained in a two-part case and is a type that can be worn the same as a wristwatch. The Reader is capable of opening, reading and closing the dosimeter. Two separate reading
17、 elements are contained in the Reader, consisting of an ultraviolet light source, filters and a light detector for reading the gamma dose, plus a constant current source and a peak reading voltmeter for reading the neutron dose. A digital meter displays a combined reading of the two separate reading
18、 elements. The range of the system is zero to one thousand centigrays (cGy) (threshold) and zero to two thousand cGy (objective). The CP-696/PDR-75 is powered from a 24 volt DC source. 3.1.1 Functional Description. The CP-696/PDR-75 Radiac Computer Indicator is used to measure the accumulated neutro
19、n and gamma radiation recorded by the Dosimeter DT-236/PDR-75. The Radiac Detector DT-236/PDR-75 is worn by personnel who may be exposed to radiation from nuclear weapons. 3.1.2 First Article. When specified in the contract (See 6.2), the contractor should furnish first article units for inspection
20、(See 4.3). 3.2 Materials. The contractor should select the materials, but the materials and parts used should be fully capable of meeting all of the operational and environmental requirements specified herein. The materials specified in the applicable drawings are recommended, but are not mandatory.
21、 Selection criteria of the class, grade or type part should be that the material will be able to perform its intended function when it is assembled. Verification of the supplier meeting the overall performance requirements should be the governing acceptance standard. Recovered materials should be us
22、ed to the maximum extent possible. 3.2.1 Bonds and Grounds. Bonding for equipment current path returns, RF potentials and shock hazards should be installed so that expansion, contraction, or movement incident to normal service use and maintenance will not break or loosen the connections. Surface pre
23、paration for bonds and grounds should be accomplished by removing all anodic film, grease, paint, lacquer or other high resistance coatings from the immediate areas of contact. The equipment finish should be restored to its original condition. The DC resistance of bonds and grounds should not exceed
24、 25.0 milliohms. (See 4.8.1). 3.2.2 Cables and Connectors. Shielded cables, when required, should have a shield weave providing 90% coverage. For guidance, refer to requirement 11 of MIL-HDBK-454. Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo
25、reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49293B - 4 - 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
26、-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 che
27、mical 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
28、 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
29、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)
30、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 cG
31、y below 50 cGy of the true dose delivered to the dosimeter at the temperature limits of -25F (-32C) and +125F (+52C) (See 4.5.1). 3.5.2 Precision. DT-236/PDR-75s 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). Copyrig
32、ht Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49293B - 5 - 3.5.3 Reading Rate. The AN/PDR-75 should be designed to allow reading at least 60 DT-236/PDR-75s per hour (See 4.5.3)
33、. 3.5.4 Voltage Range. The AN/PDR-75 should operate at voltages between 21 to 30 volts DC. 3.5.4.1 Power Supply Transient Voltage. The AN/PDR-75 should provide protection from vehicular/charging system transients up to 40 volts for less than 50 milliseconds or 600 volts for less than 10 microseconds
34、. 3.5.5 Orientation. The AN/PDR-75 should operate when inclined 20 degrees from the normal (0o) orientation (See 4.5.5). 3.5.6 Burn-in. Each AN/PDR-75 should be operated for a minimum of 48 hours under the conditions specified in paragraph 4.5.6. The burn-in should be concluded by a failure free per
35、iod, the duration of which should be not less than 16 hours. Performance should be monitored as specified in paragraph 4.5.6 and its subparagraphs. 3.5.7 Secure Lighting. The equipment should not emit excessive light that can be readily detected by image intensifier devices (See 4.5.7). 3.6 Environm
36、ental Conditions. The AN/PDR-75 should be subjected to and meet the environmental conditions below. For the purpose of environmental conditions, specified performance is defined as meeting the following requirements: Requirement paragraph Measurement 3.5.1 Accuracy 3.5.2 Precision 3.6.1 High Tempera
37、ture: The AN/PDR-75 should not be damaged or experience any degradation of performance after being operated at 125+F (+52C) or stored at +160F (+71C) (See 4.6.1). 3.6.2 Low Temperature. The AN/PDR-75 should not be damaged or experience any degradation of performance after being operated at -25F (-32
38、C) or stored at -70F (-57C) (See 4.6.2). 3.6.3 Humidity. The AN/PDR-75 should not be damaged or experience any degradation of performance following exposure to relative humidity of 94, 4 percent (See 4.6.3). 3.6.4 Altitude. The AN/PDR-75 should not be damaged or experience any degradation of perform
39、ance following transport by aircraft to 40,000 feet (12,192m) (non-operating) and operation at altitudes up to 10,000 feet (3,048m) (See 4.6.4). Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license
40、 from IHS-,-,-MIL-PRF-49293B - 6 - 3.6.5 Immersion. The AN/PDR-75, in its carrying case, should not be damaged or experience any degradation of performance after being immersed in fresh water to a depth of not less than 3.3 feet (1 meter) for a period of 120 minutes (See 4.6.5). 3.6.6 Shock, Transit
41、 Drop. The AN/PDR-75, in its carrying case, should not be damaged or experience any degradation of performance after being subjected to a sequence of shocks applied in each direction along each of 3 mutually perpendicular axes (horizontal and vertical). Shocks should be half sine pulses having a tim
42、e duration of 4 milliseconds, 5%. Shock pulses should have a peak amplitude of 100 gs 15 gs (See 4.6.6). 3.6.7 Vibration. The AN/PDR-75 should withstand, without damage, simple harmonic motion having an amplitude of 0.015 inches (0.030 inch total excursion) with the frequency being varied between 5-
43、55 Hz (See 4.6.7). 3.6.8 Shock, Bench Handling. The AN/PDR-75 should not be damaged or experience any degradation of performance after being subjected to normal bench handling shocks (See 4.6.8). 3.6.9 Dust (Fine Sand). The AN/PDR-75 should withstand, in both operating and non-operating conditions,
44、exposure to fine dust particles with wind speeds of 1750 ft/min (17.3 knots) and exposure to sand particles with wind speeds of 5700 ft/min (56.4 knots) (See 4.6.9). 3.6.10 Salt Fog. After the salt fog test (See 6.3), the AN/PDR-75 should operate without degradation in specified performance and shou
45、ld show no evidence of degradation such as flaking, pitting, blistering or loosening of finish on metal surface or exfoliation. Also, there should be no binding or clogging of mechanical parts. Drawer contacts should be cleaned prior to performance of operational checks to ensure contact with DT-236
46、/PDR-75 dosimeters (See 4.6.10). 3.6.11 Fungus. The AN/PDR-75, as prepared for operation, should be subjected to the fungus test. There should be abundant growth colonization on 50 percent or more of the area of the control item after 14 and 28 days. No cleaning of the reader is permitted for 72 hou
47、rs prior to the fungus test. Handling, prior to and during testing, should be accomplished without contamination of the reader (See 6.3). After the fungus test, the AN/PDR-75 should be visually examined. The reader should show no more than sparse microbial growth with restricted tubular growth devel
48、opment in an area ten percent or less of the total area and no more than six unrelated minute circuit portions such as terminal spacing, printed circuit boards, etc., with sparse growth due to random contamination or traces of unmixed material ingredients. In addition, the reader should operate with
49、out degradation in specified performance after the test of 4.6.11. 3.6.12 Temperature Shock. The equipment should be capable of withstanding temperature shocks between -65F (-54C) and +145F (+63C) (See 4.6.12). Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-49
