1、MIIa-A-i8716(EC) 15 October 1969 MILITARY SPECIFICATION AMPLIFIER, AUDIO FREQUENCY, AM-3729( )/SR 1. SCOPE 1.1 This specificationcovers the design and performance of a 10 watt, solid state audio frequency amplifier for operation in conjunction with Navy communication receiving equipments having 600
2、ohm, audio frequency output impedances. It is intended for installation and use in Navy ships of all t“pe5 and classes and shall operate, in accordance with this specification, under the adverse conditions norrrjaiiy encountered in a shipboard environment. 2. APPLICABLE DOCUMENTS 2.1 The following d
3、ocuments, of the issue in effect on date of invitation for bids or request for pro- posal, form a part of this specification to the extent specified herein. SPECIFICATIONS MILITARY MIL-P- 1 16 MIL-S-901 MIL-D - 3464 MIL-E- 16400 MIL-E-17555 MIL-R -39008/2 MIL-B-4329 1 MIL -I - 4 5 20 8 FEDERAL PPP-B
4、-601 PPP-B -636 PPP-B-640 STANDARDS RIIL-STD - 1 O5 RIIL-STD- 108 RIIL-STD-129 MIL-STD- 130 hl IL - S TD - 1 4 7 MIL-STD -24 2 hIIL-STD-78 1 MIL - S TD - 7 8 5 Preservation, Methods of Shock Tests, H.I. (High Impact) Shipboard Machinery, Desiccants; Activated, Bagged, Packaging Use and Electronic Eq
5、uipment, Naval Ship and Shore: General Electronic and Electrical Equipment; Accessories and Resistor, Fixed, Composition (Insulated), Established Box, Fireboard, Corrugated, Double-Wall, Weather- Inspection System Requirements Equipment and Systems, Requirements for Static Dehumidifcation Spec if ic
6、ation Repair Parts, Packaging and Packing of Reliability, Style RCR2O Resistant. Box, Wood, Cleated, Plywood Box, Fiberboard Box, Fiberboard, Corrugated, Triple Wall Sampling Procedures and Tables for Inspection by Definitions of and Basic Requirements for, Enclosures Marking for Shipment and Storag
7、e Identification Marking of U.S. Military Property Palletized and Containerized Unit Loads Electronic Equipment Parts (Selected Standards), Electromagnetic Interference Characteristics, Require- Reliability Tests Exponential Distribution Reliability Program for Systems and Equipment, Attributes for
8、Electric and Electronic Equipment Printed Wiring for Electrical Equipment ments for Equipment Development and Production Y FSC 5820 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-PBLICATIONS HANDBOOKS MIL-HDBK-217 - Reliability Stress and Failure Ra
9、te Data for Electronic Equipment (Copies of specifications, standards, drawings, and publications required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 2.2 Other publications. - The following
10、 document forms a part of this specification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. OFFZCIAL CLASSIFICATION COMMITTEE Uniform Freight Classification Rules. (Application for copies should be a
11、ddressed to the Official Classification Committee, Room 202 Union Station, 51 6 West Jackson Boulevard, Chicago, Illinois 60606). 3. REQUIREMENTS 3.1 General requirements. - The equipment shall be. in accordance with the provisions of MIL-E-16400, except as hereinafter specified. 3.1.1 Material. - M
12、aterial shall be in accordance with the requirements of MIL-E-16400 except as otherwise specified herein. Particular attention shall be paid to the acceptable and unacceptable materials of MIL-E- 16400. 3.12 Selection of parts. - The selection and application of parts shall be in accordance with MIL
13、-E- 16400. 3.1.3 Temperature classifications. - The amplifier equipment shall conform with the requirements for class 4 of MIL-E-16400. 3.1.4 Test points. - Test points shall be provided in accordance with the requirements of RIIL.-E-16400. 3. i .j Semiconductor devices. - The selection and applicat
14、ion of all transistors and semiconductor devices shall be in accordance with MIL-E-16400. The use of electron tubes or nwistors is not permiitec! under this specification. 3.1.6 Control knobs. - Control knobs shall conform with the requirements of MIL-E- 16400. Tactile. idci:!ification fornia of con
15、trol knobs will not be required. 3.1 .i Printed n-iriiig. -. Printed wiring, where employed, shall conform with the requirement- ctf XIL-E- 16400. Interconnection wiring between the multicontact mating connectors for the modular aa=ez:L,:es and the wiring to panel-mounted controls or to cabinet or c
16、hassis-mounted termiriai 5i1-:Jz s!xiAA I . -. accomplished by conventional methods conforming to the requirements o MIL- I;- 16400. 3.l.S Fuses. - Each side of the primary power input to the power supply shall be separai.ti? I ,.I The fuses shall be of the miniature, glass tube type and shall be mo
17、unted in insulated, extractor fLsr lioiders mounted on the front operating panel. 2 , Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-287Lb 54 m 9979906 OLSLiLiL9 O m ni LI- -A - 2 87 1 6 (EC 5 1 .a lovii fiise iiidicators. - Blown fuse indicat
18、ors, selected from MIL-STD-242 shall be providcd f.-:- c.clli active fuse. 3.1.10 Time meters. - Elapsed time meters are not required. 3.1.11 Enc:oaure. - The degree of enclosure of the equipment housing shall be totally enclosed, ii accordance xith NIL-STD-108. 3.1.12 Securing devices. - All screws
19、, bolts and nuts, (including front panel retaining devices) employed in the fabrication of the amplifier equipment, shall be of austenitic, corrosion resistant steel. Cadmium pIated screws, bolts, nuts or other threaded hardware devices shall not be used, MIL-E-16400 or the Government Furnished Equi
20、pment notwithstanding. 3.1.12.1 All machine screws, other than front panel securing thumb screws, shall be of the panhead, crossed recessed drive, in accordance with MIL-E- 16400. 3.1.12.2 Front panel retaining devices shall conform to the requirements of MIL-E- 16400, 3.1.13 Resilient mountings. -
21、The use of resilient mountings for equipment protection against the effects of shock and vibration are not permitted. 3.1.14 Finish. - All aluminum and aluminum alloy parts, both enameled aiid non-enameled, shall be chemically treated in accordance with the requirements of MIL-E- 16400. External sur
22、faces (cabinet and front panel) of aluminum and aluminum alloy parts shall be provided, in addition, with a primer and gray enamel coating in accordance with the requirements of MIL-E- 16400. 3.1.15 Non-standard parts. - The preparation and submission of data necessary for the evaluation of non-stan
23、dard electronic parts, shall be in strict accordance with the requirements of MIL-E- i 6400. Approval of non-standard parts, granted under prior procurements of the AM-3729( )/SR, or for non- standard parts employed in the Government Furnished Equipment, shall not be construed as being applicable to
24、 equipments covered by this specification, nor as waivers of any equipment thereof. Eon- standard parts present in the Government Furnished Equipment shall not be employed in those applications where electrically and mechanically interchangeable standard parts are currently available 3. i. 16 Electr
25、olytic capacitors. - The use of electrolytic capacitors of any description vil1 not be permitted in aiiy circuit directly identified with the basic audio amplifier. They mav he emp!uycd i!; :r:c powr supply provided that their use does not comproinise the requirements of this spccificaiior, ICI- i-c
26、.liaSilit-. Tantaluni capacitors may bc employed to the exteiit permitted bg AIIL-E- 16400. The c.ie of aluminum foil electrolytic capacitors vil1 require spcciiic approval in accordance vit11 AIlI.-li- 16450. 3.1 .17 Special tools. - Securing devices whicli require special tools for tighteiiing, lu
27、oscninz, or aili- other fori? of i?iaiiipulation shall not be employed. Special tools are defined as those toois riot liered . iii ihe Federal Supp!? Catalog (copies of this catalog mag be consulted in tlie office of the Deexiisr. Ccintr.ki.-.w Administration Servicc (DCAS). Standard tools, siicli a
28、s Allen or Bristol wreathes, shall nor be fiirnisi-ied i: the conrractor. 3.1 Gol-erimeiit k-urnished Equipment (GFE). - Except as otherwise specificid, lierein, the aliU;c8 i:.cii:e:t. This component shall be installed externally with respect to any mud3:ar as.;emr,: 3 Provided by IHSNot for Resale
29、No reproduction or networking permitted without license from IHS-,-,-MIL-A-287Lb 58 7979706 015LIL120 7 3.2.2 All parta, other than modular assemblies, shall be physically, mechanically and electrically iitcrcIi.iigeable, part for part, with corresponding parts of the Government furnished equipment
30、including estender cables. 3. L -3 .U modular assemblies shall be physically, mechanically and electrically interchangeable, on a modulai. level only, with their counterparts of the Government furnished equipment. (See 3.12). 3.2.4 In the event of any conflict or inconsistency between the foregoing
31、requirements for inter- changeability and the performance and other requirements of this specification, the performance and other requirements of this specification take precedence and shall govern. The contractor shall determine whether any such conflicts or inconsistencies exist and shall notify t
32、he command or agency concerned giving iuli details, prior to the fabrication of the first article. 3.3 Equipment composition. - The audio frequency (AF) amplifier equipment shall be complete with all parts and items necessary for its performance in accordance with the requirements of this specificat
33、ion, when connected to the specified power source. 3.3.1 External cables for connection to the primary power source, to receivers, or ancillary equip- ment are not required to be furnished by the contractor. 3.3.2 Stuffing tubes are not required to be furnished by the contractor. 3.4 Overall dimensi
34、ons and weight. - 3.4.1 Dimensions. - The maximum overall dimensions, exclusions, exclusive front panel handles (or other devices) shall not exceed the following: Width Height , Depth 8 inches 5 i/z inches 5 7/8 inches 3.4.2 Overall Weight. - The maximum overall weight shall not exceed 12 pounds. 3.
35、5 Primary polver source. - The complete equipment shall be capaiAc1 of operating from a primary pmb.er source of 105, i 13, or 125 solts, 50 to 60 hertz or 400hertzsiiigle phase, alternating curieiit(ac) $1 irh no abrogation of performance by power line vollag Tiiai itxi. - - 5.0 AF inuut. - The equ
36、ipmeiit shall iiicorporatr facilitics for the coniic.ction of t1i.o ir inpiii .i;.: Each line shall be considered as having a ncmiii.Iall rated ii?-tpf:(i!.r.r- r,: : corrosion-resistant steel. The foregoing requirement for a full 90-degree downward swing of the ci.assis-paiie1 asseiiibly shall not
37、be construed to mean that the front panel mounted controls and devices aced to be recessed. 3.q.4.7 The front panel shall be provided with a pull handle to facilitate the opening and closing of . 9, xi-: chassis-panel assembly without subjecting the control knobs or other panel-moiintcd devices to u
38、ndue sirin. The pull handle shall be capable of supporting the full weight of thc complete equipment. 3.9.4.5 The design of the panel-chassis assembly shall be such that it may lie placed on a flat surfad. , -: 1:s iroai, rear, oreither side without danger of damage to or derangement of any of its p
39、arts or ss.:-mi)lies. j,9.d.? The iiiodular assemblies shall be integral elements of the chassis-paiiel asscmljl? kach r.odular assembly shall be accessible for ready removal and replacemeilt from the froili of the equipmt :. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted wit
40、hout license from IHS-,-,-when the chassis panel assembly is secured in its opened position. Each modular assembly shall be individually removable or replaceable, without disturbing any other modular assembly, upon the loosening of its retaining devices, and shall not require the use of a soldering
41、iron or the disconnection of external leads or wiring. 3.9.5 Electrical interconnections. - 3.9.5.1 Interconnection of modular assemblies. - Electrical interconnections between the modular assemblies panel-mounted controls and devices, and external cable terminal strips shall be effected through the
42、 use of self -aligning, multi-contact connectors. The modular assemblies shall be fitted with male type, multi-contact connectors for mating with corresponding female type multi-contact connectors mounted on the chassis structure. The female type multi-contact connectors shall contain floating type
43、sockets. The connectors, both male and female, shall conform to the requirements of MIL-E-16400 with respect to their individual design, construction, materials, keying, and protective sleeves for the preclusion of damage from malinsertions. Mating pins and sockets in the connectors shall be gold pl
44、ated. 3.9.5.2 Electrical connectors. - External cables (power input, AF input and Al? outputs) shall terminate at a suitable terminal strip located at the rear of the cabinet assembly. The terminal strip shall contain solder type terminals for these cable terminations. The terminal strip shall be mo
45、unted on supports so as to project no less than i inch into the enclosure from the rear mounting surface. The terminal strip shall comply with the requirements of MIL-E- 16400 with respect to materials, markings, aiid provision for spare terminals. The terminal strip shall be positioned so that its
46、solder type terminals are accessible for lead connection and soldering from the front opening of the cabinet assembly, when this latter assembly is in its installed position. 3.9. 5.3 Chassis interconnection - Interconnection between the chassis-panel assembly and the rear matiiited terminal strip (
47、see 3.9. 5.2) shall be effected by means of a multi-conductor cable, one end of which shall be permanently connected to the terminal strip, with the other end being terminated at the chassis panel assembly through mulficontact plug and jack connector. The cable plug shall be of the male tjpe and the
48、 mating female type connecter shall be mounted on the chassis panel assembly. The male and female connectors shall conform to the requirements of 3.9.5.1. 3.5.5.3.1 The interconnecting cable shall be so positioned and be of such length and flexibility so as not to restrict the free opening and swing
49、 of the chassis panel assembly; and to preclude damage to itself from the opening or closing of the chassis panel assembly. 3.1 O Panel controls and devices. - The front operating panel shall contain the controls and devices specified hereinafter. Locking devices for controls other than keying, are not required. 3.10.1 On-off switch. - The on-off switch shall be a toggle switch operating to apply or remove primary power. It shall be entitled POWER with the two positions of the t
