1、NIL-I?-49161 (EL) 26 June i978 MILITARY SPECTFTCATION This specification is approved for use ky the Electronics Comnd, De- partment of the Army, and is availat3.e for use by all Departments and Agencies of the Department of Defense, 1. SCOPE 1.1 designated as Headset-Microphone Kit KK-1697( )/C, des
2、igned to fit DH-132 armored vehicle crewman helmets. This specification covers one type of Headset-Nicrophone Kit (See 6.1) 2. A PPLICAFLE DOC LJMXNTS 2.1 The following! documents of the issue in effect on date of invitation for bids or request for proposal., form a part of this Specification to the
3、 extent specified herein. SPFC IFICATIONS I MILITAEY MIL-P-11263 Parts, Materials, and Processes Used in KI L-M-13231 MIL-F -1407 2 MILT-45 542 Electronics Equipment Marking of Electronic Ttems Finishes for Cround 5lectronic Equipment Tool Sets, Shop Sets and Kits (Hardware Installation Kodificatian
4、 and taintenance Too1)Poth Common and Special: Packagj.ng and Packing of Eeneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving thls document should be addressed to: Commanding General, 11s Army blectronics Command, ATTN: DFSEL-RD-TS-S, Fo
5、rt Monmouth, N.,J. 07703 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. FSC 5965 d P- 7 “ / THlS DOCUMENT CONTAMS .A PAGES. Licensed by Information Handling Services. - MIL-H-qSLbL 57 7794706 0072370 2 NIL-
6、H-49161 (EL) STAND; F ES MILITASY NIL-STD-105 NIL-STD-SO2 NIL-STD-252 NIL-STD-454 NTL-STD-810 Environmental Test Methoas Sampling Procedures and Tatles for fn- Test Lethods for E.lectronic and Flectrical Wired Equipment, Classification of Visual Standard General Requirements for Fectronic spection k
7、y Attributes Component Par t,s and Mechanical Gef ect Equipment DRAWINGS FLECTRONICS COWAND DL-SM-F-433819 SC-D-621083 SC-GL-579850 Headset -Ki crophone K i.t m-1697 ( )/G Hicrophone and Earphone Test Chamber Mechanical Gages for Connector, Plug U-224/11 NAVY * SK-N-864 Simulated Gun Plast Produc i
8、ng Equipment s t (Copies of documents required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 2.2 Other publications. specification to the extent specified herein. the issue in effect on date
9、 of invitation for bids or request for pro- posal shall apply. The foliowine: documents form a part of this Unless otherwise indicated, AEE5.F ICAW NATIORAL STANDARDS INSTITUTE, S3 .?-i973 - Coupler Calibration of Earphones Cl. 10-1966 - Calibration of Nicrophonec S1.12-1972 - Specifications for Lab
10、oratory Standard Kicrophones (Application for copies should be addressed to the American National Standards Institute, 1430 Eroadway, New York, N.Y. 1.0018. ) 2 . . 43): Licensed by Information Handling ServicesMIL-H-LISLbL 57 9777706 0072373 4 HIL-H-49161 (EL) INSTITUTE OF ELECTRICAL AND ELECTEONIC
11、 GNGIAELEC 258 Test Procedure for Close-Talkinp Pressure-Type Microphones (Application for copies should be addressed to the ILJ3 Order Dept., 445 Hoes Lane, Piscataway, N.J. 08854.) 3. REQU TREMEWTC 3.1 First Article. When specified in the contract or purchase order, the contractor shall furnish sa
12、mple units for first article inspection and approval (See 4.3 ) . 3.2 Construction. The equipment shall be constructed in accordance with the requirements of this Specification and Drawing and Cata List DL-SM-E-933819 (including the requirements for parts, materials and processes thereon) (See 4.4).
13、 3.3 Parts, materials and processes: Eeneral. In addition to the re- quirements of this specification, the requirements of MIL-P-11268, in- cludinp the selection requirements therein, shall apply (See 4.4). 3.4 Finish. F-14072 and the equipment drawings (See 4.h). 3.5 Markinp. Marking shall conform
14、to Specification MIL-M-13231 (see 4.4). The equipment shall be finished in accordance with MIL- * 3 .h Performance characteristics. 3.6.1 Headset-Microphone Kit MK-ih97( )/ G. (See 4.7.2.1.) 3.6.1.1 impedance. The earphone impedance measured at the two U-229/11 connectors shall be 500 ohms 2 20 perc
15、ent. nector and Pin “Pl of short leg connector) (Pin IA“ of long leg con- 3.4.1.2 Insulation resistance. The insulation resistance between pins A and C of long leg connector; between pins A and B, A and C, A and D of short leg connector and between pins A and all external metal parts shall. be not l
16、ess than 10 megohms. switch shall be locked in the INTEFXOEI position. Durinp the test, the 3 . Licensed by Information Handling ServicesMIL-H-47161 59 m 7979706 0072372 b m MIL-H-49161 (EL) 3.6.1.3 Operation. The equipment shall transmit and receive in- telligible voice sipnals without buzzing, rat
17、tling or other spurious souncls. 3.6.2 Picrophone M-138h. (See 4.7.2.2) 3.6.2.1 Fes onse. The minimum power output of the microphone shall be -56 d : : 1 I :.i . . . : . . -. . .I :-: 3- : .,“ -. . .!: : :y; - . . I. .: . . .,: T-. . :I-: : !: .,- . I _.i. . _- - . .- .I : _. .,“ . .!:.: - .:i ., -
18、- . - . _- _ . . . . _. . . . . - _ . . . - . - . ._. . . - . . 7qTl - . . - -.- . . . . - - . t: -i _. . 1: r .:I.!: . - .- - . . . . _ - . . . -TI ! : , :-: :+. . I : 1 - : I : ; _._ i:-. . . ,.- . .I. -. I - . _I . : : I ; i :.: . . :.:I: I. O o, 8 rn D Licensed by Information Handling ServicesMI
19、L-H-49161 59 9999906 007237q T 9 NIL-H-49161 (EL) 3.6.3.2 Distortion. The acoustic output of the earphone shall have no more than 5 percent total harmonic distortion at any frequency in the range of 100 to 35W Hz. 3.6.3.3 Overload. from its original response curve, after being subjected to the test
20、specified in 4.7.2.3.3. 3.6.3.4 Dielectric streneth and insulation resistance. The insulation between the earphone terminals and exposed metal. parts shall withstand 100 volts JX for 10 seconds without breakdown. The insulation resistance shall exceed ten megohms between the indicated points. 3.6.3.
21、5 Impedance. shall be 1000 ohm plus or minus 15 percent, 3.7 Environmental. The equipment shall meet the following environ- mental conditions. The earphone shall show no more than 3 dB change The input impedance of the earphone at loo0 Hz 3.7.1 Temperature. 3.7.1.1 u. equipment shall meet the requir
22、ements of 3.6.1.1, 3.6.1.2, 3.6.1.3, 3.6.2.1 and 3.6.3.1 with no more than a 3 dE change in response, 3.7.1.2 Hiah. During and after testing as specified in 4.4.1.2, the equipment shall meet the requirements of 3.6.1.1, 3.6.1.2, 3.6.1.3, 3.6.2.1 and 3.6.3.1 with no more than a 3 dT! change in respon
23、se. bring and after testing as specified in 4.8.1.1, the = 3.7.2 Humiditg. The equipnent shall exhibit no physical damage such as corrosion, rust, blistering, swellinp or deterioration of parts and materials, and shall meet the requirements of 36.1.1, 3.6.1.2, 3.6.1.3, 3.6.2.1 and 3.6.3.1 durine the
24、 operating times specified in 4.8.2 with no more than a 3 dB change in response. 3.7.3 Altitude (Elevation), The equipment shall meet the requirements of 3.6.2.1 and 3.6.3.1 with no more than a 5 dB chanpe in frequency response at altitudes up to 15,W feet above sea level after storage at 50,000 fee
25、t above sea level. 4: 3.7.4 Immersion. The equipment shall meet the requirements of 3.6.1.1, 3.6.1.2, 3.6.1.3, 3.6.2.1 and 3.6.3.1 following immersion in three feet of water for 2 hours. i ,- a l Licensed by Information Handling ServicesMIL-H-qSLbL 57 W 7777706 0072375 L W MIL-H-49161( EL) 3.7.5 Bla
26、st. The equipment shall meet the requirements of 3.6.2.1 and 3.6.3.1 with no more than a 3 dB change in frequency response following thirty rounds of blast at a peak pressure of 9.5 pounds per square inch (psi). 3.7.6 Vibration. The equipment shall meet the requirements of 3.6.2.1 and 3.6.3.1 follow
27、ine the tests of 4.8.6. 3.7.7 Shock. drop. The equipment shall meet the requirements of 3.6.1.3, 3.6.1.4, 3.6.2.1 and 3.6.3.1 following the tests of 4.8.7. 3.7.8 Bounce, loose careo. The equipment shall meet the requirements of 3.6.1.3 and 3.6.1.4 following the test of 4.8.8. 3.7.9 Salt fop. After t
28、he salt fog test of 4.8.9, the equipment, when examined visually with the aid of a l0-power magnifier, shall show no evidence of degradation, such as flaking, pitting, blistering or loosening of finish or metal surface, or exfoliation (see 6.6) of metal. Electrical operation is not required. 3.8 Swi
29、tch life. cycles of operation when tested as specified in 4.9. The switch shall be capable of 100,000 complete 3.9 InterchanReability, Like units, assemblies, Subassemblies and replaceable parts shall conform to Requirement 7 of MIL-STD-454 (See 4.10). - 3.10 Workmanship. The equipment shall be manu
30、factured and assembled in accordance with Requirement 9 of MIL-STD-454 and the applicable portions of MIL-P-11268 (See 4.6). 4. QUALITY ASS URANCE mov mom 4.1 Responsibility for InsDection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the per- forma
31、nce of all inspection requirements as specified herein. Ejtcept as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Gov
32、ernment reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure that supplies and services conform to prescribed requirements. 7 4 Licensed by Information Handling ServicesMIL-H-qSL6L 57 m 7977706 007237b 3 = 1L-H-k916
33、1( EL) 4.2 fied herein are classified as follows! Classification of Inspections. The inspection requirements speci- a. First Article inspection (See 4.3). Does not include packaging. b. c. Quality conformance inspections. Inspections covered by subsidiary documents (See 4.4). (1) packaging (See 4.5)
34、. (2) Quality conformance inspection of equipment before Quality conformance inspection of packaging (See 4.U). 4.3 First Article. Unless otherwise specified in the contract or purchase order, the First Article inspection shall be performed by the cofitractor. 4.3.1 First Article units. The contract
35、or shall furnish seven (7) First Article units of the complete Headset-Microphone Kit MK-1697( )/G and four (4) units each of the microphones and earphones. 4.3.2 First Article inspection. The First Article inspection shall con- sist of the inspections specified in suksidiary documents covering the
36、items listed in 4.4, and the inspections specified for Group A, Group E and Group C (See Tables I, II and III respectively). The inspection shall be performed in the following order: 4.4, Group A and Group E for all units; and Group C as specified in Table III, of Group C environmental tests, confor
37、ming units shall be reinspected and shall pass all Group A inspection. I After completion 4.3.3 First Article data. shall be furnished as required in the contract or purchase order. 4.3.4 Failures. above shall be cause for refusal to grant first article approval. The First Article test plan and test
38、 report Failure to meet one or more requirements of paragraph 3 4.4 Inspections covered b-v subsidiam documents, The following shall be inspected under the applicable subsidiary document as part of the in- spection required by this specification, and the inspection requirement specified in the contr
39、act or purchase order. - Item Where required Construction 3.2 Parts, materials and processes-general 3 03 Finish 3.4 Marking 3.5 Licensed by Information Handling ServicesMIL-H-YSLbL 57 H 77777Ob 0072377 5 m MIL-H-49161( EL) 4.5 The contractor shall perform the inspection specified in 4.4, 4.5.1 thro
40、ugh 4.5.4. for performing any additional inspection which is necessary to control the quality of the product and to assure compliance with all speci- fication requirements. Quality conformance inspection of equipment before packaginq. This does not relieve the contractor of his responsibility 4.5.1
41、Group A inspection. shall be inspected for conformance to the inspections specified in Table i. inspection. Factors of lot composition not defined herein or in the contract or purchase order, shall be in accordance with MILSTD-105. Each lot shall be subject to sampling inspection, utilizing the pro-
42、 cedures of MIL-STD-105, using the penera1 inspection levels and AQLs indicated in Table I. Each unit on contract or purchase order Discrete lots shall be formed from units that pass this 4.5.1.1 be performed in an order satisfactory to the Government except that Order of inspection within Group A.
43、Group A inspection shall the-operational inspection shall be last. Table I. Group A inspection AQL * Inspection Visual & Mechanical Headset-microphone Impedance Ins Resistance Operational Microphone Impedance Diel and Ins Res Earphone Diel and Ins Res impedance Req Para Insp Para 3.10 4.6 3.6.1.1 4,
44、7.2.1.1 3.6.1.2 4.7.2.1.2 3.6.1.3 4.7.2.1.3 3.6.2.3 4.7.2.2.3 3.6.2.5 4.7.2.2.5 3.6.3.4 4.762.3.4 3.6.3.5 4.7- 2.3 5 Major Minor 1% 4% * * U 17 1% 1% 1% $c 1% * * U 1% 1% * All electrical and operational defects are considered major. 9 . Licensed by Information Handling ServicesNIL-H-LISL61 57 77977
45、06 0072378 7 W Mn-k9161( EL) 4.5.2 Group B inspection. formed on inspection lots that have passed Group A inspection and on samples selected from units that have been subjected to and met the Group A inspection. the special inspection levels of Table I of MIL-STD-105. Group B inspection shall normal
46、ly be per- This inspection shall conform to Table II and to 4.5.2.1 Group E Sampling Plans. Aas listed in Table II shall be Inspection Level S-4. 4.5.2.2 Order of Inspection within Group B. Group B inspection shall be performed in an order satisfactory to the government. The Group E sampling plans f
47、or the Table II Group E inspection Inspection Req Para Insp Para AQL Interchangeability 3.9 4.10 6.5% Microphone Response 3.6.2.1 4.7.2.2.1 4. % Distortion 3.6.2.2 4.7.2.2.2 (for the Response 3.6.3.1 4.7.2.3.1 4.0% Distortion 3.6.3.2 4.7.2.3.2 (for the group ) Earphone group 1 4.5.3 GrouD C inspecti
48、on. Group C inspection shall be performed on units that have passed Group A and Group D inspection, spection shall consist of the inspections specified in Table III. Samples shall be selected in accordance with 4.5.3.1. The in- 10 Licensed by Information Handling ServicesMIL-H-LISLLL 57 M 777970b 00
49、72377 7 9 MIL-H-49161( EL ) 4.5.3.1 Sampling for Group C inspection. each of the microphone, earphone and headset-microphone shall be selected at random from each 500 units or fraction thereof produced. For Sub- group II, five samples of the headset-microphone shall be selected at random from each 1000 units or fraction thereof produced. High temper- ature, low temperature, humidity, shock and bounce tests shall be per- formed, one test per sample. In addition, two samples each of the . microphone and earphone shall be selected fro
