1、1 . I METRIC MIL-J-O024649(SH) 4 January 1985 MILITARY SPECIFICATION TELEPHONE, HARDWARE, SOUND POWERED GENERAL SPECFICATION FOR This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use by all Departments and Agencies of the Department
2、 of Defense. 1. SCOPE 1.1 Scope. This specification covers sound powered telephone hardware for use with sound powered telephone systems in Navy ships. 1.2 Classification. The sound powered telephone hardware shall be of the following types as specified (see 6.2): A-17A - Switchbox. A-19A - Switchbo
3、x. A-26A - Switch-rotary selector. G-15A - Single jackbox. G-15B - Double jackbox. G- 15C - Four-gang jackbox. H-25A - Sound powered jack. H-27A - Sound powered jack, panel mounted, H-39A - Sound powered plug. IC/A1 - Switchboard. IC/TRC - Reel, casuality communication. 2-33 - Handset holder. Cabine
4、t, handset. Telephone/distance line. Hook, handset. Sound powered jack, portable. Stowage box, headset. Beneficial comments (recommendations, additions, deletions) and any perti- nent data which may be of use in improving this document should be addressed to: Commander, ATTN: SEA 03R42, Naval Sea Sy
5、stems Command, 2531 Jefferson Davis Hwy., Arlington, VA 22242-5160 by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 5935 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provide
6、d by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications. standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified her
7、ein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS FEDERAL QQ-S-571 - Solder; Tin Alloy, Tin-Lead Alloy, a
8、nd Lead Alloy. MILITARY MIL-S-901 - Shock Test, H.I. (High Impact); Shipboard Machinery, Equipment and Systems, Requirements For. Equipment. MIL-P-15024 - Plates, Tags and Bands for Identification of MIL-P-15024/5-Plates, Identification. MIL-T-15514 - Telephone Equipment, Sound Powered Telephone Han
9、dset, Headset, and Headset-Noise Attenuating, General Specification For. MIL-E-17555 - Electronic and Electrical Equipment, Accessories, and Provisioned Items (Repair Parts): Packaging of. MIL-L-19140 - Lumber and Plywood, Fire-Retardant Treated. MIL-S-19622 - Stuffing Tubes, Nylon; and Packing Asse
10、mblies; MIL-R-24049 - Rope, Polyphropylene. MIL-E-24142 - Enclosures for Electrical Fittings and Fixtures, MIL-C-24643 - Cable and Cord, Electrical, Low Smoke for Ship- MIL-T-31000 - Technical Data Packages, General Specification General Specification. General Specification For. Board Use, General S
11、pecification For. For. STANDARDS FEDERAL FED-STD-H28 - Screw Thread Standards For Federal Service. MILITARY MIL-STD-108 - Definitions of and Basic Requirements for MIL-STD-167-1 - Mechanical Vibration of Shipboard Equipment Enclosures for Electric and Electronic Equipment (Type I - Environmental and
12、 Type II - Inter- nally Excited). MIL-STD-202 - Test Methods for Electronic and Electrical Compo- MIL-STD-454 - Standard General Requirements for Electronic MIL-STD-810 - Environmental Test Methods and Engineering nent Parts. Equipment. Guidelines. 2 Provided by IHSNot for ResaleNo reproduction or n
13、etworking permitted without license from IHS-,-,-MIL-T-24649A 999990b L979672 752 MILITARY - Continued MIL-STD-1277 - Splices, Terminals, Terminal Boards, Binding Posts, Terminal Junction Systems, Wire Caps; Electrical. MIL-STD-2036 - General Requirements for Electronic Equipment Specifications. (Se
14、e supplement 1 for list of associated specifications.) (Unless otherwise indicated, copies of federal and military specifica- tions and standards are available from the Standardization Documents Order Desk, Bldg 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.2 NonGovernment Publications. Th
15、e following document forms a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted shall be those listed in the issue of the DODISS specified in the solicitation. Unless otherwise specified, the issues of documents not lis
16、ted in the DODISS are the issue of the documents cited in the solicitation (see 6.2). AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) B 633 - Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel. D 4727 - Standard Specification for Corrugated and Solid and Solid Fiberboar
17、d Sheet Stock (Container Grade) and Cut Shapes. (DOD adopted) (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) (NonGovernment standards and other publications are normally available from the or anizations that p
18、repare or distribute the documents. These documents a f so may be available in or through libraries or other informational services.) 2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein (except for related associated detail specificat
19、ions, specification sheets), the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Specification sheets. The individual item requirements shall be as specified herei
20、n and in accordance with the applicable specification sheet. In the event of any conflict between the requirements of this specification and the specification sheet, the latter shall govern. 3.2 First article. When specified (see 6.2), a sample shall be subjected to first article inspection (see 6.3
21、) in accordance with 4.4. 3.3 General requirements. The sound powered telephone hardware shall be in accordance with the applicable sections of MIL-STD-2036 in addition requirements specified hekein. Whenever a requirement of MIL-STD-2036 conflicts with a requirement of this specification, the requi
22、rement of specification shall govern. to the this 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.3.1 Shock. Sound powered telephone hardware shall be subjected to grade A, class 1, light weight, type A shock in accordance with 4.7.2. Upon comple
23、tion of this test the sound powered telephone hardware shall show no evidence of physical or electrical defects. 3.3.2 Vibration. The sound powered telephone hardware shall be subjected to vibrations up to 50 Hertz (Hz) in accordance with 4.7.3. Upon completion of this test the sound powered telepho
24、ne hardware shall show no evidence of physical or material defects. 3.3.3 Random drOD. The sound powered telephone hardware shall be subjected to the random drop test specified in 4.7.4. Upon completion of this test the sound powered telephone hardware shall show no evidence of breaking, cracking, b
25、ending or other physical or electrical damage to the sound powered telephone hardware. 3.3.4 Temperature. The sound powered telephone hardware shall be subjected to the temperatures of minus 28 degrees Celsius (“C) to plus 65OC in accordance with 4.7.5. Upon completion of this test the sound powered
26、 telephone hardware shall show no evidence of physical or electrical defects. 3.3.5 Salt fog. The sound powered telephone hardware shall be subjected to a 20 percent hot salt spray, and hot air blast in accordance with 4.7.6. Upon completion of this test the sound powered telephone hardware shall sh
27、ow no evidence of corrosion, damage, or leakage due to the salt fog. 3.3.6 DriDDroof. Sound powered telephone hardware requiring a dripproof (45 degrees) enclosure shall be tested in accordance with 4.7.7. Upon completion of this test the enclosure shall show no evidence of liquid penetration. 3.3.7
28、 SDlashproof. Sound powered telephone hardware requiring a splash- proof enclosure shall be tested in accordance with 4.7.8. Upon completion of this test the enclosure shall show no evidence of liquid penetration. 3.3.8 Watertight. Sound powered telephone hardware requiring a water tight enclosure s
29、hall be tested in accordance with 4.7.9. Upon completion of this test the enclosure shall show no evidence of liquid penetration. 3.3.9 Insulation resistance. The insulation resistance of sound powered telephone hardware shall be not less than 10 megohms when tested in accordance with 4.7.10. 3.3.10
30、 Talk demonstration. Sound powered telephone hardware shall be subjected to the talk demonstration in accordance with 4.7.11. Two sound powered telephones in accordance with MIL-T-15514, two sound powered jackboxes (see 3.7.4), sound powered jack (see 3.8) shall be provided, as required (see 6.2), b
31、y Naval Sea Systems Command. Upon completion of this test the sound powered telephone hardware shall have demonstrated the ability to provide clear and understandable two-way communication. 3.4 Materials. 3.4.1 Recovered materials. Unless otherwise specified herein, all material incorporated in the
32、products covered by this specification shall be new. Products may be fabricated using raw materials produced from recovered bulk materials to the extent practicable if the intended use of the product is not jeopardized. The term “recovered materials“ means material which have been collected or recov
33、ered from solid waste and reprocessed to become a 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-T-24649A m 9999906 L97967LI 525 m source of raw materials, as opposed to virgin raw materials. None of the above shall be interpreted to mean tha
34、t the use of partially processed, assembled, used or rebuilt products are allowed under this specification. 3.4.2 Toxic materials. The material shall have no adverse effect on the health of personnel when used for its intended purpose. Questions pertaining to this effect shall be referred by the con
35、tracting activity to the appropriate departmental medical service who will act as advisor to the contracting activity. 3.4.3 Identification Dlate. The identification plate shall be a type G, style III, basic arrangement in accordance with MIL-P-15024 and MIL-P-15024/5. 3.4.4 Information Dlate. An in
36、formation plate, schematic diagram, shall be provided. The information plate shall be a type G, style I in accordance with MIL-P-15024 and the individual specification sheet. 3.4.5 Station plate. A removable station plate suitable for engraving shall be provided. The station plate shall be a black b
37、ackground with white letters after engraving. 3.4.6 Switches. Switches for the sound powered telephone hardware shall have a contact resistance of not greater than 0.010 ohm,life expectancy of 100,000 operations and an environmentalproof seal. 3.4.6.1 Toggle switches. The toggle switches shall be a
38、standard toggle, double pole single throw, and a 11.913 mm diameter bushing. 3.4.6.2 Rotary switch. The rotary switch shall be a two pole, 16 position rotary switch. 3.4.7 Terminal boards. Terminal boards shall be in accordance with MIL- STD-1277. Terminal boards shall be marked in a clear and perma
39、nent manner so as to identify individual terminals. Mounting of the terminal boards shall be in accordance with requirement 19 of MIL-STD-454. Gage (AWG) sd, with a dielectric withstanding voltage of 600 volts. Internal wiring shall have sufficient slack to permit removal of covers or panels for mai
40、ntenance or connection. Each circuit shall consist of a black and white twisted pair. 3.4.8 Wirin . Wiring shall be insulated, stranded wire, American Wire 3.4.9 Wire terminals. Solderless wire terminals in accordance with requirement 19 of MIL-STD-454 are preferred. Wires subject to breakage at the
41、 connection shall be provided with terminals that rip the wire insulation. Where practical, wires soldered to terminals shal f be looped at least once and not more than twice around the terminal before soldering. 3.4.10 Solder. Solder shall conform to type S, composition Sn60, of QQ- S-571 for all s
42、oldered electrical connections. 3.4.11 Workmanship. Workmanship shall be in accordance with requirement 9 of MIL-STD-454 (see 4.7.12). I 3.5 Switchbox. detailed desim. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-T-24b47A m 9799906 L977b75 4
43、bL m 3.5.1 Switchbox. The switchbox shall consist of an enclosure (see 3.3.7), toggle switches (see 3.4.6), terminal boards (see 3.4.7), and sound powered jack, panel mount (see 3.9). The switchbox shall be hinged on the bottom with captive screw on the top. 3.5.2 Switchbox. A-17A. Switchbox, A-17A
44、(10 switches), shall be in accordance with MIL-T-24649/1. 3.5.3 Switchbox. A-19A. Switchbox, A-19A (20 switches), shall be in accordance with MIL-T-24649/2. 3.6 Switch-rotarv selector. A-26A. detailed design. 3.6.1 Switch-rotarv selector. A-26A. The switch-rotary selector, A-26A, shall consist of an
45、 enclosure (see 3.3.7), rotary switch (see 3.4.6), terminal boards (see 3.4.7), and a sound powered jack, panel mount (see 3.9). The switch-rotary selector, A-26A, shall be in accordance with MIL-T-24649/3. 3.6.2 Rotarv identification. A rotary identification plate, suitable for cut through engravin
46、g, to accommodate back lighting (see 3.6.3), and fitted with a t-handle shall be provided. 3.6.3 Illumination. When required (see 6.2), illumination shall be provided. The rotary identification plate and pointer shall be back lighted by electroluminescents, the color of the lighting shall be red. 3.
47、7 Jackbox. detailed desim. 3.7.1 Jackboxes. The jackboxes shall consist of an enclosure (see 3.3.9), terminal boards (see 3.4.7) and one, two, or four, sound powered jacks (see 3.8). 3.7.2 Enclosure. The enclosure shall be in accordance with MIL-E-24142. The enclosure for a single or double jackbox
48、shall be manufactured from metal or composite materials, and shall be a type 3R, and for a four-gang jackbox shall be a type 4R. 3.7.3 Single iackbox. G-15A. The single jackbox, G-15A, shall be in accordance with MIL-T-24649/4. 3.7.4 Double iackbox. G-15B. The double jackbox, G-15B, shall be in acco
49、rdance with MIL-T-24649/5. 3.7.5 Four-gang iackbox. G-15C. The four-gang jackbox, G-15C, shall be in accordance with MIL-T-24649/6. 3.8 Sound powered iack, H-25A. detailed design. 3.8.1 Sound powered iack. The sound powered jack, H-25A, shall be in accordance with MIL-T-24649/7. 3.8.2 Compatibilitv. The sound powered jack shall be compatible in fit and function with the sound powered plug (see 3.10). 3.8.3 Dielectric withstanding voltage. The sound powered jack shall withstand not less than
