1、MIL-I-85846A(AS) 14 November 1990 SUPERSEDING 14 June 1988 10 August 1984 blIL-1-85846(AS) MIL-I-22352/24(AS) MILITARY SPECIFICATION INTEKCOMMUNICATIONS SET, AN/AIC-l4A AUDIO FREQUENCY ANPLIFIER AM-3889/AIC-l4A GENFRAL SPECIFICATION FOR This specification is approved for use within the Naval Air Sys
2、tems Command, Department of the Navy, and is available for use by all Departments and Agencies af the Department of Defense. I. SCOPE 1.1 Scope. This specification establishes the design, performance and acceptance requirements for AM-3889/AIC-l4A Audio Frequency Amplifier, herein referred to as the
3、 AM-3889. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. The following specifications and standards form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents shall be those listed in the issue of the
4、Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation. SPECIFICATIONS FEDERAL PPP-B-636 Boxes, Fiberboard MILITARY MIL-P-116 Preservation, Methods of MIL-B-5087 Bonding, Electrical and Lighting Protection for Aero- space Systems Benefi
5、cial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Systems Engineering and Standardization Department (Code 53) , Naval Air Engineering Center, Lakehurst, NJ 08733-5100, by using the self-addressed Stand
6、ardization Document Improvement Proposal (UD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 5831 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IH
7、S-,-,-MIL-I-8584bA 58 979990b O?ib5b29 T = MIL-*I 485846Ai AS) SPEC IF I CAT IONS ( con ti nued MILITARY (continued) MI L-E-5400 MIL-T-5624 MIL-L-7808 MIL-E-1 7555 MIL-N-18307 MIL-H-83282 MIL-1-85845 MIL-1-85846/1 MIL-I-85846/2 STAN DARDS MILITARY MIL-STD-109 MIL-STD-129 MI L-STD-130 MIL-STD-454 MIL
8、-STD-461 MIL-STD-462 MIL-STD-704 Electronic Equipment, Aerospace, General Specifica- tion for Turbine Fuel, Aviation, Grades JP-4 and JP-5 Lubricating Oil, Aircraft Turbine Engine, Synthetic Base NATO Code Number 0-148 Electronic and Electrical Equipment Accessories and Repair Parts; Packaging and P
9、acking of Nomencl ature and Namepl ates for Aeronautical Electronic and Associated Equipment Hydraulic Fluid, Fire Resistant, Synthetic Hydro- carbon Base, Aircraft NATO Code Number H-537 Intercommunication Sets, AN/AIC-l4A Master Interphone Control Panel C-2645D/AIC-l4A, General Specification for I
10、ntercommunication Sets, AN/AIC-l4A Microphone Mixing Modul e Intercommunication Sets, AN/AIC-l4A Dual Output Amp1 if i er Modul e Qual i ty Assurance Terms and Definitions Marking for Shipment and Storage Identification Marking of U.S. Military Property Standard General Requirements for Electronic E
11、quipment Electromagnetic Emission and Susceptibility Require- ments for the Control of Electromagnetic Interference Electromagnetic Interference Characteristics, Measurement of Electric Power, Aircraft Characteristics and Utilira- tion of 2 Provided by IHSNot for ResaleNo reproduction or networking
12、permitted without license from IHS-,-,-STANDARDS (continued) MILITARY I continued) MIL-STD-781 Reliability Tests; Exponential Distribution MIL-STD-810 Envi ronmental Test Methods arid Engineering Guide1 ines MIL-STD-882 System Safety Program for Systems and Associated Sub- systems and Equipment, Keq
13、uirements for MI L -STD- 965 Parts Control Program MIL-STD-45662 Cal i bration Systems Requirements (Unless otherwise indicated, copies of federal and military specifications, standards and handbooks are avai 1 ab1 e from the Standardization Document Order Desk, 700 Robbins Avenue, Building #4, Sect
14、ion D, Philadelphia, PA 191 1 1 -5094. ) 2.1.2 Other Government documents, drawings and publications. The following other Government documents, drawings and publications form a part of this specification to the extent specified herein. ified, the issues are those cited in the solicitation. Unless ot
15、herwise spec- DOC UME NTS NAVAL AIR SYSTEMS COMWIND AD-1115 El ectromagnetic Compati bi 1 i ty Design -Gui de for Avionics and Related Ground Support Equipment DRAWINGS NAVAL AIR SYSTEMS COMMAND DL 1794AS9000 Audio Frequency Amplifier, AM-3889/AIC-l4A (Copies of specifications, standards, drawings a
16、nd documents required by the contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting activity.) In the event of a conflict between the text of this specification and the references cited herein (except for the a
17、ssociated detail specifications, specification sheets or MS standards), the text of this specification chal 1 take precedence. Nothing in this specification, however, shall supersede applicable laws and regulations unless a specific exemption - has been obtained. 2.2 Order of precedence. 3 REQUIREME
18、NTS 3.1 Specification sheets, The individual item requirements shall be as specified herein and in accordance with the applicable specification sheet. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-I-8584bA 58 D 99999b Oi.lbSb31 B MIL- I-85846
19、AiAS) In event of any conflict between the requirements of this specification and specification sheet, the latter shall govern. 3.2 Item description. The AM-3889 is normally used in conjunction with the C-26451 Master Interphone Control Panel (see MIL-1-85845). The AM-3889 shall be capable of accept
20、ing two separate microphone inputs. The AM-3889 shall provide amplified voice output signals to headsets at two different crew stations. Two-channel output shall be provided to permit the use of two head- sets without interaction or interference. The outputs shall be capable of operating directly in
21、to high impedance headsets, low impedance headsets, or 1 oudspeakers without the use of external impedance matching transformers. The AM-3889 is mounted to an aircraft with Mounting Plate, MT-2075/AIC-14. Figure 1 provides an out1 ine drawing of the AM-3889. 3.3 First article. When specified in the
22、contract or purchase order, a sample shall be subjected to first article inspection (see 4.2 and 6.3). 3.4 Parts and materials. 3.4.1 Nonstandard parts and material approval, Approval for the use of nonstandard parts and materials shall be obtained by the contractor as spec- ified in MIL-STD-965, Pr
23、ocedure I. 3.4.2 Parts rescreening. The contractor shall provide 100 percent rescreening of active components such as but not limited to ICs, hybrids, semiconductors and other components, as appropriate to provide a quality product. Active component parts rescreening at the electronic equipment manu
24、- facturers plant chal 1 consist of functional check of cri tical parameters at +125“C ambient and -54C to the part specification. 3.4.3 Supplemental requirements. In the event that the contractor proposes to alter the materials or piece parts of the AM-3889 specified herein, the supplemental requir
25、ements of 3.4.2.1 through 3.4.2.3 shall be applicable for the selection of parts and materials. 3.4.3.1 Basic conformance. Parts and materials selected for use in the AM-3889 shall be in accordance with MIL-E-5400, unless the parts or materials listed therein will not perform adequately in the inten
26、ded applications and environments specified herein. with MIL-E-5400 must be used, refer to 3.4.1. facture of the AM-3889 and under the conditions therein, shall not liberate deleterious or corrosive fumes. This shall include fungicidal agents that are used, When any parts and materials not in accord
27、ance 3.4.3.2 Toxic and corrosive fumes. The materials, as used in the manu- 3.4.3.3 Recycled, virgin and reclaimed materials. Except when intended use of the AM-3889 will be jeopardized by the use of reclaimed or recycled materials, these materials shall be used to the maximum extent possible. 3.5 D
28、esign and construction. Design and construction of the AM-3889 chal 1 conform with MIL-E-5400 and DL 1794AS9000 and as specified herein. It 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4 t SPKR HDST SPKR HDST 7.? Z5 6,OO 7.,5 75 600 4 II mm 2 II
29、 v b43.50t.01 - -.4 2 +-.O6 (REF) 3- M T-2 075/AIC-t4 (REF) - NAMEPLATE r- MS 31 2EIo-6S LMS3ii 2Ei2-IOP 1/ All dimensions are in inches. Tolerances on dimensions are +0.03 inches - unless otherwise specified. FIGURE 1. AM-3889 outline. - 5 Provided by IHSNot for ResaleNo reproduction or networking
30、permitted without license from IHS-,-,-MIL-I-85846A( AS) Y is a condition of final acceptance that the AM-3889 manufactured shall meet al 1 the design, construction and workmanship requirements of this specifica- tion and applicable acceptance test documents, 3.5 e 1 Re1 iabil i tv. 3.5.1.1 Operatio
31、nal stability. The AM-3889 shall operate with required performance, continuously or intermittently, for not less than 7000 hours. 3.5.1.2 Operating life. The AM-3889 shall have a minimum total operating life not less than 10,000 hours when maintenance delineated in the maintenance p?an is performed
32、irr accordance with the approved procedures. MTBF O1 for the AM-3889 shall be not less than 1000 h ours. AM-3889s and al 1 rep1 aceabl e assembl ies, subassembl ies and parts of the AM-3889s in accordance with MIL-E-5400. All parts having the same manu- facturers part number shall be directly and co
33、mpletely interchangeable with each other with respect to installation and performance without need for mechanical or electrical matching, alignment or adjustment of parts or circuitry. 3.5.1.3 Reliability in mean-time-between-failure (MBF). The lower test 3.5.2 Interchangeability. Interchangeability
34、 shall exist between all 3.5.3 Transportability. The AM-3889 shall be transportable by air, rail, truck or ship when packaged as specified in Section 5. 3.5.4 Dimensions. The dimensions of the AM-3889 shall be as shown on Figure 1 and as follows: a. Height b. Width c. Depth 4.94 - i.O.02 inches. 3.5
35、0 - + 0.01 inches. 3.45 - + 0.03 inches. 3.5.5 Weight. The weight of the AM-3889 shall be not greater than 2.0 pounds. 3.5.6 Color. The color of the AM-3889 shall be as identified in DL 1794AS900r 3.5.7 Connectors. The input and output connectors shall be as ident- ified in DL -. 3.5.8 Nameplates an
36、d identification marking. Serial number assignment and nameplate approval shall be in accordance with MIL-N-18307. Identifica- tion marking shall be in accordance with MIL-STD-130. The following informa- tion shall be placed on the nameplate: a. b. Unit designator (AM-3889/AIC-l4A). Unit nomenclatur
37、e (Audio Frequency Amplifier). 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-c. Contract number. d. Manufacturers code number, e. Equipment drawing number (30003 - 1794AS9000). f. Technical manual identification. g. Proeuring activity (Department
38、 of the Navy - Naval Air Systems Command), h. Serial number specified in the contract shall be stamp for example, average power density within the pulse envelope. 6/ Volts per meter equivalent is shown for reference only, 7/ Frequency ranges listed with more than one modulation shall be repeated as
39、necessary to include all different modulations and field strength shown. 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-8584bA 5 m 997770b Oqb5638 O 3.5.14.3 Susceptibility interpretation. The criteria of 3.5.14.3.1 and 3.5.14.3.2 shall be
40、applied to determine whether the unit is susceptible, 3.5.14.3.1 Susceptibility to stray magnetic fields. The AM-3889 shall be shielded or so designed that when oriented in any Position within a magnetic field of 2 Gass in the frequency range of400 Hz to 2800 Hz, the properly terminated output fron
41、each amplifier circuit shall be not greater than 10.0 millivolts at 400 Hz and shall be not greater than a linear increase Of 16 pV/Hz UP to 2800 Hz, 3.5.14.3.2 Susceptibilfiy. The AM-3889 shall be designed to resist audio interference including power supply pick-up. The AM-3889 shall exhibit audio
42、outputs not greater than -90 dB within the audio pass band of 100 Hz to 10 kHz when subjected to the radiated and conducted signal exposures required herei n. 3.5.14.4 Ground plane interference. The AM-3889 shall be capable of specified performance when subjected to aircraft chassis noise between th
43、e interfacing WRAs , - 3.5.14.5 Grounding requirements. The grounding system between WRAs of the equipment shall be compatible and consistent with the following aircraft grounding scheme. All WRAs shall be grounded in such a manner as to prevent ground loops and common ground returns for signal and
44、power circuits, minimize EMI, and to protect personnel from electrical hazards. 3.5.14.6 Bondin . A means of electrically bonding the equipment to the aircraft chassis + s a be provided and shall comply with the requirements of MIL-B-5087. the equipment case shall be not greater than 2.5 milliohms.
45、Bonding resistance between the bonding surface and all parts of 3.5.15 Interface. 3-5.15.1 Signal interface. The AM-3889 input and output signals shall have the characteristics specified in Tables II and III. TABLE II. Inwt sianals. Signal Name Microphone No. 1 (MIC No. 1) Microphone No, 2 (MIC No.
46、2) Audi o AUDIO Power (PWR) Characteristics Voice range audio (300 to 7000 Hz) signal ranging in amplitude from O to 1 Vac. Voice rJnge audio (300 to 7000 Hz) signal ranging in amplitude from O to 1 Vac. Voice range audio (300 to 7000 Hz) signal ranging in amplitude from O to 27 Vac. +27.5 Vdc - + 0
47、.5V. 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-85bA 58 9999906 0465637.2 W r Signal Name Characteristics Speaker No. 1 (SPKR No. 1) Speaker No. 2 (SPKR No. 2) Voice range audio (300 to 7000 Hz) signal ranging from O to 4 Vac. Voice ran
48、ge audio (300 to 7000 Hz) signal ranging from O to 4 Vac. HI L-I -85846A1 A5 Mic Audio (MIC AUDIO) Voice range audio (300 to 7000 Hz) signal ranging from O to 2.0 Vac. Headset (HDST) Voice range audio (300 to 7000 Hz) signal ranging from O to 36 Vac. 3.5.15.1.1.1 Power ground (PWR GND). Primary powe
49、r shall be as spec- ified as power delivered to the AM-3Y b y the aircraft generating and di stri bution system. Primary power returns shall be connected to the chassis of the AM-3889. 3.5.15.1.1.2 System ground (SYS GND). The system ground network shall be established to provide isolation from interference injected onto the power returns. The interconnection of signal returns and signal shield connections form
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