1、MIL-A-29420(MC) 22 October 1985 MILITARY SPECIFICATION AMPL IFIER-COUVERTER: AM-6879/URC This specification is approved for use by the U. S. Marine Corps, Department of the Navy, and is available for use by all Departments and 9gencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specifica
2、tion establishes the performance, production and test requirements for the Amplifier-Converter AM-6879/URC. 2. APPLICABLE DOCUMENTS . 2.1 Goue rnmen t documents 2.1.1 Specif i cati ons , standa rds , and handbooks. the following specifications, standards, and handbooks of the issue listed in that is
3、sue of the Department of Defense Index of Specifications and Standards (DoDISS) specified in the solicitation form a part of this specification to the extent specified herein. SPEC I F IC AT I ON S Un1 esc ot herwi se specified , a MIL I TARY MI L-0-9858 MI L -C -1 2520 MIL-P-12606 MIL-E-17555 MI L
4、-C -390 12 MIL-ti-49078 MIL-E -527 98 MIL-C-55116 MIL-P-55149/9 Qual i ty Program Req ui rement.s Connector, Plug and Receptacle (Electrical , Waterproof) and Accessories, General Specification for and 4 Inch Diameter Cone, 2 Watt, Fungus, Gun blast and Immersion Resistant 1, Type LL-445/ily Y12606-
5、Ol , and M12606-O2 Loudspeaker, Permanent Magnet (Unencased, 3 Inch Electronic and Electrical Equipment , Accessories, Connector, Coaxial , Radio Frequency, General Specification for Handset H-250 ( )/IJ Enamel , Al kyd, Camouflage Connector, Miniature Audio, Five-pin Post , Rinding, Elect rica1 , W
6、aterproof and and Repair Parts, Packaging and Packagina of Nonwaterproof (Ilninsulated) , Types Pb09nc01 to Pti09nc07, Inclusive Ren ef i c i a 1 c rnmao n s , a d di t i on s , de 1 et i on s ) a n d a n,y p e rt i n en t data which may be of use in improving this document should be addressed to: C
7、ommandant of the Marine Corps, Headquarters Marine Corps, Code LMA-1, Washington, D.C. 20380 by using the self-addressed Standardization Docuiiient Improvement Proposal (DO Form 1426) appearing at the end of this document or by letter. - . THIS DOCUMENT CONTAINS Z3 - PAGES. rsc DU20 _ DISTRIBUTION S
8、TATEMENT A. Approved for publig-release; distribution is unlimited - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-27420 58 7777jq06-OL5b72b 8 STANDARDS MI L I TARY MIL-STD-105 MI L-STD-1 O9 MI L -STD -1 29 MIL -S TD -4 54 MIL-STD-461 MI L -S
9、TD -462 MIL-STD-463 MI L -STO -470 MI L -STD -4 71 M I L -S Tn -7 81 MIL-STD-810 MIL-5TD-883 MIL-STD-1275 a Sampling Procedures and Tables for Inspection by Attributes Quality Assurance Terms and Definitions Marking for Shipment and Storage Standard General Requi rements for Electronic Equip ment El
10、ectromagnetic Emission and Suscepti bil ity Requirements for the Control of Electromagnetic Interference E 1 ect r orna gn et i c In t e rf e ren ce C ha ra ct e ri s t i cs , Measurement of Definition and System of Units, Electromagnetic Interference Techno1 ogy Ma i n t a i na hi 1 i ty Program R
11、eq u i remen t s (For Systems and Equipments) Ma i nta i na bi 1 i ty Demon st rat i on Reliability Tests Exponential Distribution Fnvironmental Test Yethods and Engineering Gui del i nec Test Methods and Procedures for Microelectronics Electrical Circuit, 28 Volt DC Transient Characteristics for Mi
12、litary Vehicles 2.1.2 Other Government documents, drawings, and pub1 ications. The following other Government documents, drawings, and publications form a part of this specification to the extent specified herein. HANDBOOKS Mi 1 i tary h.1 I L -HDR K -4 72 Ma i nt a i na bi 1 i ty Predi ct i on DRNI
13、NGS U.S. Marine Corps 755002A1000 Key Tel egrap h 755002A1650 Mount i ng Tray 755002A1810 Cable, CX-l3104/IIRC 755OO?A1811 C a hl e, C X -1 3 1 O I; /! JR C 755002A7773 -2 6 pin Audio Connector 755n02A7815 -1 Connector to AM6545/GR,- 755002A7815 -2 Connector to RT-l209/IIKC Copies of specifications,
14、 standards, drawings, and publications required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as directed b.y the contracting officer.) 2.2 Order of precedence. In the event of a conflict between the text of this snecification
15、and the references cited herein, the text of this Specification s ha1 1 take precedence. 3. REQ1.I IREMENTS a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- Y MIL-A-29LI20 58 m 9979706 0356727 T m 3.1 First article. Prior to submission of any compl
16、ete production items for acceptance, the contractor shall furnish four first articles for determination of conformance to this specification. be those specified herein. activity shall not relieve the contractor of his obligation to supply equip- ments conforming to this specification. duction items
17、from the first articles shall be subject to the approval of the contracting officer. Examination and tests shall a Approval of the first articles by the procuring Any changes or deviations of the pro- 3.2 Mat er i a 1 3.2.1. Materials, processes and parts. Unless otherwise specified (See 6.2.11, all
18、 parts, materials, and Drocesses used in construction of this equipment shall conform to MIL-STD-454. Tile selection of the class, grade, or type shall be such that when mounted in the equipment, the part or material will perform its intended function. 3.2. iI Integrated electronics, packaging. Al 1
19、 solid state devices and al 1 rnicroci rcuits empl oyed shill 1 be packaged in hermetical ly sealed packaqes. Wo plastic (for example, epoxy, silicon, organo-metallics, phenolics, and so forth) encapsulated devices shall be accepted without specific written approval of the procuring activity. 3.3 De
20、sian and construction. 3.3.1 Yajor components. The following components and ancillary items are part of, or used with, the Amplifier-Converter, AM-6879/URC and shall he supplied by the contractor: - Item Quantity 9 Amp 1 if i er -Convert er Handset, H-250/11 Telegraph Key KY-872/PRC-104 Cable Assemb
21、ly. Special Purpose, Electrical CX-l3104/URC Cable Assembly, Special Purpose, Electrical CX-l3105/URC Mounting Tray, Electrical Equipment MT-4874/IJRC 1 each 1 each 1 each 1 each 1 each 1 each 3.3.1.1 Ampl ifier-converter. The amplifier-converter shall interface with the receiver-transmitter RT-1209
22、/!IRCy the radio frequency amplifier, AM-6545/ GRC-193, and teletype equipment such as the AN/TGC-l4(V) as installed in the AN/GRC-193 transportable base station, high frequency (HF), sirigle sidehand (SSR) radio system. The amplifier-converter provides loudspeaker output with optional squelch, conv
23、ersion from 20 nil liampere (mA) or 60 mA teletypewriter (TTY) direct current (DC) loop to wide deviation frequency shift-keying (FSK) (and vice-versa) and power line and control line electromagnetic interference (EMI) filtering and conditioninq to protect the RT-l209/IJRC froin transients and radio
24、 frequency i nt erf e ren ce (RFI ) . 3.3.1.,1.1 Control elements. The following controls shall be provided and located on the front panel. 3.3.1.1.1.1 TTY/loudspeaker switch. A single switch shall be provided t.0 3.3.1.1.1.2 Squelch. A control shall be provided t.o hoth turn the squelch turn on or
25、off either the TTY circuits or speaker (audio and squelch circuit). circuit on or off and to adjust the sqiielch threshold. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-e 3.3.1.1.1.3 Loop current adjust. A locking type screwdriver control shall be
26、 provided for adjustment of the DC loop current. 3.3.1.1.1.4 Loop current select. A switch shall be provided to select either 60 mA or 20 mA DC loop operation. 3.3.1.1.2 Front panel connectors. The fol 1 owing connectors shall be provided on the front panel. 3.3.1.1.2.1 Binding posts. Four binding p
27、osts, type P09NC04, in accordance with MIL-P-55149/9, shall be provided for TTY key and DC loop interface to the TTY. 3.3.1.1.2.2 Handset. A 5 pin audio connector, type 116-183/U, in accordance with MIL-C-55116, shall be provided for connection of the H-250/U handset. 3.3.1.1.2.3 RT-l209/URC front.
28、A 6 pin audio connector, in accordance with Drawing Yo. 755002A7773-2, shall be provided for audio and keying interface with receiver-transmitter RT-l209/URC or the secure voice eqiiipment KY-65. fuseholder shall be located in the front panel of the iinit and the spare fuseholder on the rear surface
29、 of the unit. 3.3.1.1.3 Fuseholders. Two fuseholders shall be provided. The active 3.3.1.1.4 Test points TTY. current shall be provided on the front panel. Test points for ineasureinent of the loop 3.3.1.1.5 Loudspeaker. A loudspeaker shall be provided on the front panel of the unit. It shall be fro
30、nt facing, ?-watt (N), permanent magnet, resistant to fungus, qunblast and immersion and equivalent to type LS-445/U of MI L-Li12606. 3.3.1.1.6 Rear mounted connectors. The following connectors shall be mounted on the rear surface. 3.3.1.1.6.1 RT-l209/URC rear. Wo. 755002A7815-2 and MIL-C-12520 shal
31、l be provided for interface to the RT-l209/IJRC. This interface shall be as defined in Table I. A mal e receptacle in accordance with Drawing 3.3.1.1.6.2 AM-6545/GRC-193 control and power. A male receptacle iri accordance with Drawinq No. 755002A7815-1 and MIL-C-12520 shall be urovided for interface
32、 to the AM-6545/GRC-193. I I. The int.erface shall be as defined in Table 3.3.1.1. li. 3 AM-6545/GRC-193 Radio Frequency (RF). A female t.ype N receptacle in accordance with MIL-C-39012 chal 1 provide RF input/output interface to the AM-6545/GRC-193. 3.3.1.1.7 Reliabilit . The amplifier-converter sh
33、all possess a specified mean-time between-failure + MTFIF), Q, of no less than 4400 hours, and a miniinum acceptable MTBF of no less than 2200 hours over the specified environmental operating range. 3.3.1.1.8 Reverse polarity. The amplifier-converter chal 1 incorporate reverse polarity protectiori b
34、y the use of protective diodes. 3.3.1.1.9 Ground. The chassis chal 1 be negative. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-c r ar m lu . 5; cm Ed! 4 c, c, L ON I-m e O4 o za Cn E CT mo Li r V)Li O er c I- L CY O 4J C O r t: aJQ: CV CL os U0 V)
35、 .C C O .r- ic QI U c, UL aJaJ L3 a U m QJ c, c t W z -I U - I- o on ILK C C O O *r *I- m CUE I- = m c (u 4 I I- CY Q a i I- (Y . H a; G 7 c - . E O z o n m 19 (u + u . - c L S c, aJ CY o c c z c.3 v - u N m (u n O I- o z 3 LL W z -I H H LL LL o z O E a C V) h vi LL LL O z O Q CL -U 7-1 L m 1: ce O
36、IL E ce 7 c . . Qs Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-27420 58 Tl7770b 01567323 .I- m c i c I- E t *I- O X w E ZT O v, E t: O Li c -N c mmLn c Lo O Lo -0 ai 3 c + t O o I *I- . U O E 5 C LL e L O + z LL. cr P u *I- - L mc -50 E EL
37、u- . v, o L O cc ic wo c VI- ch I- d. Q C m -I- ce I- - D I-aJ aJ I- o vr rrs O H(n I-= H I- Y LL I- cicic I- cr: 4 P - 4 z I “: a ON ww . H C Q *s O t d O z H LL w. -4 I -I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- -. flIL-A-27LI20 5 7777706
38、0156733 5 m U a, 3 K Q c c o I K O -P c u- ar U .I- -I- ar .r- . v, c ar- 30 w z -I H ma ON Co+ +- a -+ +- I- -H -490 78. 3.3.1.3 Teleqraph Key KY-872/PRC-l04. The telegraph key shall be in accordance with Drawing No. 75500241000, 3.3.1.4 Vehicle mount, to receiver-transmitter (RT) cable CX-l3104/UR
39、C. This cable chal 1 interconnect the amplifier-converter to the RT-l209/!IRC and shall be in accordance with Drawing No. 755002A1810. 3.3. I. 5 Audio andj. This cable shall be provide the audio and keyinsface between the amplifier-converter and the RT-l209/!IRC 11 and shall be in accordance with Or
40、awing No. 755002A1811. a 3,3.1.6 Mounting tray YT-4874/lJRC. The mounting tray shall silpport the Ak6879/URC and RT-l209/IJRC in the radio set AN/GRC-193 conf iquration. Mount chal 1 he in accordance wit.h Drawing No. 755002A1650. 3.3.2 Control life. All controls shall be functioned end-to-end witho
41、ut failure for no less than 10,000 cycles. 3.3.3 Control end stops. All controls identified as having end stops shall be capable of withstanding repeat force in each direction of 48 inch-ounces without permanent deforimtion to end stops. Frquency selectors shall not be actuated with less than 2 poun
42、ds of force, nor require inore than 6 pounds for activation. Push type dial lavp switch shall not be activated with less than 1 pound of force nor require more than 6 pounds for activation. 3.3.4 Covers and seals. Ampllfier-converter covers, seals or sealivg surfaces shall be capable of 25 open and
43、close cycles without loss of leakage resi stance. 3.3.5 Soldering. Soldering shall be in accordance with Requirement fi of MIL-STn-454. 3.3.6 Yechanical characteristics. The amplifier-converter shall he essentiallv a rectangular hox fabricated from aluminutn for reasonable weiqht. The unit shall be
44、watertight and ruggedized for rough handling and hard inunt.ing in vehicle installations. Flountinq flanges and hosses on the bottom surface shall pruvide for retention to a vehicle mounting tray alongside the receiver-exciter. - Provisions are also required for adapter qlate niniintinq of t.he rece
45、iver-cxciter 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-27420 58 U 7777706 0356738 4 U unit atop the amplifier-converter for future installations that will add a preselector/remote control unit alongside on the same mounting tray. Al 1
46、controls, loudspeaker, TTY terminals, fuse, and audio connectors chal 1 he front panel mounted. Interface connectors shall be rear panel mounted. The amplifier- converter to receiver-exciter audio and interface jumper cables chal 1 he retained. Projecting flanges chal 1 protect the front panel contr
47、ols and connectors. The amplifier-converter shall be constructed as a two-piece enclosure consisting of a rear cover and a panel/encl osure assembly. All electronic circuitry, except front panel controls shall be carried on plug-in modules that are hardware-mounted to the enclosure. Cover screws sha
48、ll be retained. 3.4 Maintainability. Design criteria for the maintainability of the equipment components, and ancillary items to be contractor-furnished shall be in accordance with MIL-STD-470, MIL-STD-471, and MIL-HDBK-472. The mean time to repair (MTTR) for the replacement of defective modules sha
49、ll he no more than 15 minutes. other than throwaway items, at the depot levels, shall !w no more than 3 hours. Comformance to the specified MTTR shall be certified by a demonstration test using personnel with equivalent depot level training. The MTTR for the amplifier-converter, modules and subassemblies, 3.5 Transporta hi 1 ity. The amp1 i fi er-converter c ha1 1 he capa hl e of being transpor
