1、 MIL - PRF - 49136C(CR) 26 September 2000 SUPERSEDING MIL - PRF - 49136B(CR) 19 MAY 1997 PERFORMANCE SPECIFICATION COUNTERMEASURES TEST SET, AN/ALM-178( ) This performance specification is approved for use by USACECOM, Department of the Army and i s available for use by all departments and agencies
2、of the Department of Defense. 1.0 SCOPE 1.1 Scope . This performance specification covers the requirements for construction of an AN/ALM - 178 and AN/ALM - 178A Countermeasures Test Sets, herein referred to as the “CM Test Sets.” 2.0 APPLICABLE DOUMENTS 2.1 General. The documents listed in this sect
3、ion are in sections 3 and 4 of this specification. This section does not include documents in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that the
4、y must meet all requirements documents cited in sections 3 and 4 of this specification, whether or not they are listed. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: HQ, USA Communications - E
5、lectronics Command, ATTN: AMSEL - LC - LEO - E - EP, Fort Monmouth, NJ 07703 by usi ng the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 6625 INCH - POUND Copyright Communications - Electronics Command Provided by IHS un
6、der license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL - PRF - 49136C(CR) 22.2 Government Documents 2.2.1 Specifications, Standards, and Handbooks . The following specificatio ns, standards and handbooks form a part of this document to the extent
7、specified herein. Unless otherwise specified, the issues of these documents are those listed in the Department of Defense Index of Specifications and Standards (DoDISS) and supplements thereto, cited in the solicitation (see 6.2). Handbooks are for guidance only and therefore are not mandatory. Mili
8、tary Standard MIL - STD - 810 Environmental Test Methods and Engineering Guidelines Handbooks Department of Defense MIL - H DBK - 454 Standard General Requirements for Electronic Equipment (Unless otherwise indicated, copies of the above specifications, standards and handbooks are available from the
9、 Standardization Document Order Desk, 700 Robbins Avenue, Building #4, Section D, Philadelphia, PA 19111 - 5094). 2.2.2 Other Government Documents, Drawings, and Publications . The following other Government documents, drawings and publications form a part of this document to the extent specified he
10、rein. Unless otherwise specified, the is sues are those cited in the solicitation. Drawings USA Communications - Electronics Command SM - D - 879376 Cable Assembly, Special Purpose Electrical (AN/ALM - 178( ) SM - D - 879377 Cable Assembly, Special Purpose Electrical (AN/ALM - 178( ) SM - D - 879378
11、 Cable Ass embly, Special Purpose Electrical (AN/ALM - 178) SM - A - 883939 Performance Test Procedure for (AN/ALM - 178( ) SM - D - 879348 Test Set, Countermeasures Set, AN/ALM - 178 PLSM - D - 879348 Test Set, Countermeasures Set, AN/ALM - 178 SM - D - 879386 Meter, Multifunction Test, M E - 499/A
12、LM - 178 PLSM - D - 879386 Meter, Multifunction Test, ME - 499/ALM - 178 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL - PRF - 49136C(CR) 3SM - D - 883913 Case, Countermeasu
13、res Test Set, CY - 7612/ALM - 178 PLSM - D - 883913 Case, Countermeasures Test Set, CY - 7612/ALM - 178 A3274941 Cable Assembly, Special Purpose Electrical (AN/ALM - 178 A) PLA3274941 Cable Assembly, Special Purpose Electrical (AN/ALM - 178A) A3274939 Test Set, Countermeasures Set, AN/ALM - 178A A32
14、74943 Cable Assembly, Transmitter Control (AN/ALM - 178A) PLA3274939 Test Set, Countermeasures Set, AN/ALM - 178A A3274940 Meter, Mult ifunction Test, ME - 499A/ALM178A PLA3274940 Meter, Multifunction Test, ME - 499A/ALM - 178A A3275349 Case, Countermeasures Test Set, CY - 7612A/ALM - 178A PLA327534
15、9 Case, Countermeasures Test Set, CY - 7612A/ALM - 178A (Copies of specifications, standards, drawings and publications required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 2.3 Non - Gover
16、nment Publications . The following documents form a part of t his document to the extent specified herein. Unless otherwise specified, the issues of the documents, which are DoD adopted, are those listed in the issue of the DoDISS cited in the solicitation. Unless otherwise specified, the issues of
17、documents not li sted in the DoDISS are the issues of the documents cited in the solicitation (see 6.2). American National Standards Institute (ANSI) ANSI C63.4 - 1991 Methods of Measurement of Radio - Noise Emissions From Low Voltage Electronic Equipment (Application for c opies should be addressed
18、 to the American National Standards Institute Inc., 1430 Broadway, NY, NY 10018.) 2.4 Order of Precedence . In event of a conflict between the text of this document and the reference cited herein, the text of this document takes pre cedence. Nothing in this document, however, supersedes applicable l
19、aws and regulations unless a specific exemption has been obtained. 3.0 REQUIREMENTS 3.1 First Article . Where specified in the contract (see 6.2), the contractor shall furnish first article uni ts for inspection (see 4). Copyright Communications - Electronics Command Provided by IHS under license wi
20、th CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL - PRF - 49136C(CR) 43.2 Materials . The contractor shall select materials that are fully capable of meeting all operational and environmental requirements specified herein. The materials specified in the ap
21、plicable drawings are recommended, not manda tory. Selection criteria of the class, grade or type part shall 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 shall be the governing acce
22、ptance standard. Recovered materials shall be used to the maximum extent possible. 3.3 Description . The CM Test Set, AN/ALM - 178, SM - D - 879348, is Special Test Equipment (STE) for the Countermeasures Set (AN/ALQ - 144(V)1 and (V)3 and Countermeasures Set AN/AL Q - 144A(V)1 and (V)3. The CM Test
23、 Set, AN/ALM - 178A, A3274939, is Special Test Equipment (STE) for the Countermeasures Set AN/ALQ - 144(V)1 and (V)3, Countermeasures Set AN/ALQ -144A(V)1 and (V)3 and Countermeasures Set AN/ALQ - 144A(V)5. 3.3.1 Design . The CM Tes t Set, AN/ALM - 178, shall meet the requirements of this specificat
24、ion. The end item shall also consist of the following: Three (3) special purpose cable assemblies, a multifunctional test meter, and a carrying case. The three cable assemblies shall meet the dimensions and dimensional tolerances of drawings SM - D - 879376, SM - D - 879377, and SM - D - 879378 to e
25、nsure proper physical and electrical interface with existing hardware. The carrying case shall be capable of containing the CM Test Set and all ancillary i tems. The CM Test Set, AN/ALM - 178A, shall meet the requirements of this specification. The end item shall also consist of the following: Four
26、(4) special purpose cable assemblies, a multifunctional test meter, and a carrying case. The four (4) cable assemblies shall meet the dimensions and dimensional tolerances of drawings SM - D - 879376, SM - D - 879377, A3274941 and A3274943 to ensure proper physical and electrical interface with exis
27、ting hardware. The carrying case shall be capable of containing the CM Test Set and all ancillary items. 3.3.2 Dimensions and Weight . The CM Test Set, AN/ALM - 178, SM - D - 879348 and PLSM - D - 879348, SM - D - 879386 and PLSM - B - 879386, SM - D - 883913 and PLSM - D -883913 set including all m
28、ajor components (see 3.3.1) shall not exceed 36.0 pounds (16.2 kg). The nominal dimensions of the CM Test Set are provided on the respective drawings. The CM Test Set AN/ALM - 178A, A3274939 and PLA3274939, A3274940 and PLA3274940, A3275349 and PLA3275349 including all major components (see 3.3.1) s
29、hall not e xceed 36.0 pounds (16.2 kg). The nominal dimensions of the CM Test Set are provided on the respective drawings. 3.3.3 Finish . All surfaces of the CM Test Sets requiring a protective coating shall not chip, crack, or peel and shall protect against corrosion w hen subjected to the environm
30、ental requirements herein (see 4.4). Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL - PRF - 49136C(CR) 53.4 Nameplates and Product Marking . The CM Test Sets, parts, componen
31、ts, subassemblies, and assemblies thereof shall be marked for identification and reference designation markings. For guid ance, use MIL - HDBK - 454. 3.4.1 Serial Numbers . The following items shall have serial numbers: a. Countermeasures Test Sets, AN/ALM - 178( ) b. Case, Countermeasures Test Sets
32、, CY - 7612( )ALM - 178( ) c. Meters, Multifunction Test, ME - 499( )ALM - 178( ) 3.5 Performance Char acteristics 3.5.1 Personnel Hazards . The CM Test Sets shall be protected against personnel hazards as indicated herein. Also, the applicable parts of Requirement 1 of MIL - HDBK - 454 are recommen
33、ded for reference. 3.5.2 Rounding Exposed Edges . Exposed edges and co rners shall be rounded sufficiently to minimize lacerations/puncture hazards. The design goal is a minimum radius of 0.04 inch (1 mm) for edges and a minimum of 0.5 inch (12.7 mm) for corners. 3.5.3 Radioactive Materials . Radioa
34、ctive materials shall not be u sed (e.g. luminous dials/markings, electron tubes, surge arresters and lenses). 3.5.4 Mechanical/Electrical Interchangeability . Like units, assemblies, subassemblies and replaceable parts shall be physically and functionally interchangeable without modificati on. Elec
35、trical adjustment shall be made at all maintenance levels as referenced in the maintenance manuals. 3.5.5 Bounce Preconditioning . Each CM Test Set shall be bounce preconditioned for one minute by a vibration shaker (20 - 60 Hz vertical plane). Afterwa rds, the unit shall not be repaired, aligned, c
36、leaned or otherwise changed prior to inspection. 3.5.6 Burn - In . The CM Test Sets shall be submitted for a minimum of 24 hours under the following temperature cycling: Transit Ambient to 25 o F ( - 32 o C) 1 H our Stabilized 25 o F ( - 32 o C) 9 Hours Transit 25 o F ( - 32 o C) to 125 o F(+52 o C)
37、 2 Hours Stabilized +125 o F(+52 o C) 9 Hours Transit +125 o F(+52 o C) to ambient 1 Hour Stabilized Ambient 2 Hours 3.5.7 Electrical Requirements . The CM Test Sets shall meet the requirements of this section. Copyright Communications - Electronics Command Provided by IHS under license with CRAINot
38、 for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL - PRF - 49136C(CR) 63.5.7.1 Input Power . The CM Test Sets shall operate and meet the requirements specified herein with an input voltage of 27.5 volts (DC) + 1.5 volts (DC) and input current not greater than 260 mil
39、liamp eres (mA). 3.5.7.2 CM Test Set ON - OFF Control . The CM Test Sets shall provide ON - OFF control of the 28 volt (DC) power to the transmitter of the Countermeasures Set, AN/ALQ - 144( ). 3.5.7.3 CM Test Set Power Control . The CM Test Sets shall supply a 28 VDC signal to the Countermeasures S
40、et AN/ALQ - 144( ) to disable the source power when it is desired to operate without the source being on and to inhibit activation of INOP indications. 3.5.7.4 CM Test Set Output Control . The CM Test Sets shall measure the infrared source mo nitor voltage of the Countermeasure Set, AN/ALQ - 144( ).
41、 3.5.7.5 Lamp Test Operation . The CM Test Sets shall provide for testing the operation of the indicating lamps of the Multifunction Test Meter, ME - 499( )/ALM - 178( ). 3.5.7.6 CM Test Set Voltage Measurements . The CM Test Sets shall measure voltage over the range of zero to 32 VDC with an accura
42、cy of + 3 percent. 3.5.7.7 CM Test Set Current Measurements . The CM Test Sets shall measure current over the range of zero to 10 amperes (A) with an accuracy of + 3 percent. 3.5.7.8 CM Test Set Frequency Measurements . The CM Test Sets shall measure frequency and frequency sweep limits with an accu
43、racy of + 1 percent. 3.6 Environmental Conditions 3.6.1 Altitude . The CM Test Sets shall operate at all altitudes up to and including 10,000 feet (3408 m) above sea level and shall be air transportable, non - operating, at any altitude up to and including 40,000 feet (12,192M) above sea level. 3.6.
44、2 High Temperature . The CM Test Sets shall continuously operate at temperatures up to and including +55 o C (+ 131 o F) and shall withstand non - operating exposure at temperatures up to and including +60 o C (+140 o F). 3.6.3 Low Temperature . The CM Test Sets shall continuously operate at tempera
45、tures as low as - 40 o C ( - 40 o F) and shall withstand non - operating exposure at temp eratures as low as 56.7 o C ( - 70 o F). 3.6.4 Humidity . The CM Test Sets shall operate satisfactorily after prolonged storage or non - operating exposure at all humidity up to and including 98 percent relativ
46、e humidity and shall show no evidence of corrosion or ru st of the internal or external parts as a result of this exposure. Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL - P
47、RF - 49136C(CR) 73.6.5 Rain . The CM Test Sets shall operate during and after prolonged exposure to rain, with or without an intermittent wind. 3.6.6 Immersion . The transit case of the CM Test Sets shall withstand immersion in fresh water to a covering depth of three feet for not less than two hour
48、s and not greater than two and a quarter hours. 3.6.7 Dust . The CM Test Sets shall operate during and after exposure to wind - borne dust with velocities up to 35 knots. 3.6.8 Salt Fog . The CM Test Sets shall operate during and after exposure to salt fog of marine coastal atmospheres and salt fall
49、out over land areas of the world, and shall show no evidence of corrosion or rust of external parts and no binding of rotary controls and switches when rotated. 3.6.9 Fungus . The CM Test Sets shall operate after exposure to fungus growth as is encountered throughout the world, and shall show no evidence of deterioration that adversely affects operation. 3.6.10 Vibration I . The CM Test Sets shall w ithstand vibration that is su
