1、_ . f MIL-C-289L7 58 W 9997706 OL5b207 b . -_.-_ . _._ -_ -_ - . . .-_. ._ . ._ _-_. _-_ . -.-. . - . u I_. _I . : “ i. .-.-li. . 2- . . . -. . _._-. . .- . ._f - 4 . d . .I . .: . .- 4 _-._- . I 4 .L . . . . . .- . . . . * . .: . . . 4 . . _.-. * . . . , . - . 3 J . . . . ., . 2 I . . - . - _.- -.
2、4 -.- . 3 1 I. . 1 4 , . . - . . . . . .*.I . -. - .-. II- - - -.- . - II.-.- -. . I _. . . . . -. -. . - . . . . . .-. . . . . . . . . . . . -I . - . I . . . .- MIL-C-28917 (MC) 27 March 1969 MILITARY SPECIFICATION CONTROL , POWER SUPPLY: C-7 67 4/VCC , AND CONTROL, TERMINAL SET: C-7827/VCC 1. SCOP
3、E 1.1 This specification covers requirements for one type control, power supply and control, terminal set. 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on date of invitation for bids or request for proposal, a part of the specification to the extent specified herein. fo
4、rm SPECIFICATIONS MILITARY MIL-T-152 - Treatment, Moisture and Fungus- Resistant of Communications, Electronic and Associated Electrical Equipment . MIL-T-704 - Treatment and Painting of Materiel. MIL-P-15024 - Plates, Identif ication-Information and Marking for Identification of Electrical, Electro
5、nic and Mechanical Equipment . Shore, General Specification. and Associated Repair Parts, -Preparat.ion for Delivery of . Identification Plates and Markings, Requirements for. and Ground Electronic Equipment. MIL-P-16400 - Electronic Equipment , Naval Ship and MIL-E-17555 - Electronic and Electrical
6、 Equipment MIL-E-21981 - Electronics Type Designations, MIL-R-22732 - Reliability Requirements for Shipboard . - . . . . : :.-.-.:. ., . , - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-28917 (MC) “ .-. t - . . . . . . . . . - . . . . . . .
7、. . . -. . . . . s . . . A . l MILITARY MIL-STD-129 - Marking for Shipment and Storage.- MIL-STD-188 - Military Communication System MIL-STD-810 - Environmental Test Methods MIL-STD-826 - Electromagnetic Interference Test Technical Standards. Requirements and Test Methods. (Copies of sp5cifications
8、and standards required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 3. REQUIREMENTS 3.1 General. The Control, Power Supply,. C-7674/vCC, and Control, Terminal Set, C-7827flCC, to be furnished
9、 under contract or order shall conform to all requirements specified herein. defined may be obtained from MIL-STD-188. 3.1.1 Control, Power Supply C-7674/VCC. The control unit shall provide the various power supply options for vehicle mounted equipment. from alternating current (ac) main supply, fro
10、m a vehicle battery or any other suitable 24-volt (V) battery. The unit shall provide unregulated 24-V power to two connectors on the front panel for ancillary equipment and regulated 24-V power for the radio equipment, carrier terminals and combiner . Definitions for the abbreviations not The unit
11、shall receive power 3.1.2 Control, Terminal Set, C-7827/VCC. The control unit shall provide for connecting and switching of audio and high frequency (hf) carrier circuits between the carrAer terminal, the radio set and the handset. used in conjunction with the Control, Power Supply, C-7674flCC. rece
12、iver-transmitter (rt) relay in the Receiver Transmitter. RT-524mC, so that a heavy current shall not be carried through the handset cable. The unit shall be A transistor shall be provided to control the . _- /- / / I J 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without li
13、cense from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-28917 (MC) processes and the determination of operational techniques. The first article, production and sample items shall be subjected to the mechanical and electrical tests sp
14、ecified in Section 4. Mechanical wear shall be such that mechanical or functional performance is not affected. Abrasion of painted surfaces is allowable. the terminal shall not be degraded. The contractor is required to demonstrate that the unit is capable of calculated mean time between failure (MT
15、BF) of not less than 15,000 hours. The contractor is required to demonstrate actual MTBF of not less than 500 hours under standard and service conditions. Test level No. 2 of MIL-R-22732 shall be utilized in establishing demonstrated test conditions. Electrical performance of 3.4 Desiqn and construc
16、tion. Design and construction shall be as follows: 3.4.1 Mechanical parts. Where mechanical parts are employed, whose functions are to rotate, cam or oscillate against other mechanical parts and the best choice of materials includes other than those specified in MIL-E-16400, use of the other materia
17、ls may take precedence. 3.4.2 Parts and materials. In the selection of parts and materials, the fulfillment of major objectives shall be the prime consideration. In all cases, general material require- ments as to flammability, fungus-resistance and nontoxicity as specified in MIL-T-152 shall be met
18、. 3.4.3 Nonstandard parts. When it has been determined that requirements cannot be met by use of parts and materials specified in MIL-E-16400, the contractor shall immediately inform the contracting officer by submission of detailed data, as required by MIL-E-16400, and shall request approval. speci
19、fications listed in MIL-E-16400 shall be given first consideration. 3.4.4 Comwnents. Parts and materials approved by 3.4.5 Case material. Construction of the case, front panel for the units, and mounting base shall be made of cast aluminum alloy. Where panels are removable from the case and cables e
20、nter the front panel or case, such openings shall be 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-28917 (MC) 3.4.9 Storaqe conditions. The eq
21、uipment shall be capable of being stored under the following conditions with a subsequent period of operation: (a) Ambient temperature range - -62O C to +71 C (b) Altitude - Sea level to 50,000 feet 3 . 4 . 10 StabiJitv. 3.4.10.1 Electrical, The equipment shall operate as specified herein for at lea
22、st 500 hours, either continuously or intermittently, independent of component failure without necessity for readjustment of any controls other than those Located on the front panel. 3.4.10.2 Mechanical. All controls and adjustments shall be desgned so that their position of adjustment will not be al
23、tered when the equipment is subjected to the specified service conditions, 3.4.11 Znterchanaeabilitv. All components and parts shall be physically, functionally, mechanically and elec- trically interchangeable with any other units produced under this specification. 3.4.12 Identification markinq. Sub
24、assemblies shall be identified with the manufacturers part number, steel stamped, rubber stamped or silk screened on a fixed surface if available, or on a permanent tag affixed in a manner which shall not impair operation of the assembly, and shall not be easily removable. This marking shall be visi
25、ble when mounted in the assembly. 3.5 Funqus resistance. The units shall be rendered fungus proof by the selection of parts and materials which are nonnutrient for fungus. 3.6 Electrical characteristics. Unless otherwise specified herein, the electrical characteristics shall be as specified in the f
26、ollowing paragraphs at nominal line voltage of the 115 alternating current volts (Vac). 3.6.1 Power supply. All 115-Vac circuits shall have an insulation resistance to ground of 50 megohms or greater at 500 direct current volts (Vdc). 6 -_, Provided by IHSNot for ResaleNo reproduction or networking
27、permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.6.3 Hiqh Erequencv circuit. Provision shall ,Je made or switching the hf input and output of a Terminal, Telegraph-Telephone, TH-81/CCI connected to the Control,
28、 Terminal Set, C-7827/VCCt as follows: (a) No connection. (b) Output to Receiver Transmitter, RT-;524/VRC, input to Receiver, R-442/VRC. 3.6.4 Terminal, Teleqraph-Telephone,TH-81,power circuit. Power shall be available at the Terminal, Telegraph- Telephone, TH81/GCC, in all switch positions. 3 . 6.5
29、 Receive/Transmit relay circuit. In order to reduce the handset cable current, the Control, .Terminal Set, C-7827/vCC, shall provide a rt relay amplifier for Receiver-Transmitter, RT+524/VRC. .* 3.6.5.1 Enerqizinq rt relav,. Provision shall e made-for energizirg the -ct ke3ay when, Terhiinal; Tehgra
30、ph-Telephone, - TH-81/GCCI is .connected to Receiaer-Transmitter, RTr524,LVRC. 3.6.6 Circuit alarm. The Control, Terminal Set, . C-7827/VCC, shall connect the Terminal, Telegraph-Telephone, TH-81/GCC,alarm so as to be audible at the speaker of Receiver-Transmitteq RT-524mC. c - .- 3.7 Controls and c
31、onnections. The control panels shall contain the following operator controls and shall be identified as follows: (a) Front panel, Control, Power Supply, C-7674/vCC. Control or Switch Connector Posi tion Function 24 VDC NON REG connector 532 Provide 24 Vdc, nonregu- lated power for the operation of c
32、ipher equipment. BAT connector 533 Connects power from the 24-V vehicle battery. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-28917 (MC) Control or Switch Connector Position Function - 10A AC fuses F16 and F17 30A DC Fuse F18 POWER switch S2
33、1 ( 3 -PO s i tion) 115 VAC Captive cable C-7827/VCC Connector J35 R-442DRC Connector J34 115 VAC OFF 24 VDC Protect the ac supply leads . Protects the leads from the vehicle battery. Connects 115 Vac to the Disconnects all power. rectifier. Connects 24-Vdc power from the vehicle battery to the cont
34、rol unit. Connects to 115-Vac outlet. Supplies 24 Vdc regulated to the Control, Terminal Set, C-7827flCC. Provides connection to power connector 1711 on rear of Mounts, MT-1898DRC (b) Front and side panels, Control, Terminal Set, C-7827DCC Control or Switch Connector Position Function Handset Provid
35、es connection for Connector J41 handset. It is connected to radio equipment for sing le-channel posit ions of the MODE switch. It is connected to the carrier terminal for the multi- channel position of the MODE switch. Provided by IHSNot for ResaleNo reproduction or networking permitted without lice
36、nse from IHS-,-,-Control or Switch Connector Pos it ion Function 24 VDC connector 54 2 R-44 2/VRC Connector 543 MODE switch S26 (3 position rotary) Provides connection for power cable from Control, Power Supply, C-7 674/VCC . Provides connection to output connector 512 on rear of Mount, M!T-l898/VRC
37、. SIMPLEX Handset and transmitting antenna connected to the Receiver Transmitter, RT-524DRC; the Receiver, R-442/VRC, is disconnected: provides single-channel simplex opration. SINGLE- Handset and antennas CHANNEL connected to Receiver, DUPLEX R-442/VRC, and transmitter section of Receiver, Transmit
38、ter, RT-524flRC: receiver section of Receiver Transmitter, RT-524/VRC,not Connected: provides single-channel duplex operation. MULTI- Transmitting side of carrier CHANNEL terminal connected to DUPLEX transmitter of Receiver Transmitt er, RT-5 24/VRC : receiving side of carrier terminal connected to
39、Receiver, R-442flRC: receiver of the Receiver Transmitter, RT- 5 24/VRC, not connected: handset connected to the HANDSET switch; provides multichannel duplex operation. 10 _=. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for Res
40、aleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-28917(MC) . alloy where possible. Drawings for identification plates shall be submitted for approval 90 days prior to first article tests. Nomenclature shall be requested in accor- . dance with MIL-E-2l98L and shall be sub
41、mitted 90 days prior to the first article testing. 3.11 Workmanshia. Units covered by this specification shall be manufactured and finished in accordance with MIL-E-16400. 4 . QUALITY ASSURANCE PROVISIONS 4.1 Reswnsibilitv for inspection, Unless otherwise specified in the contract or purchase order,
42、 the supplier is respnsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or order, the supplier may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapp
43、roved by the Government. right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.2 Inspection and tests. Inspection and tests shall consist of all tests specified herein t
44、o demonstrate that the units submitted for approval meet all requirements of this specification, First article testing shall be witnessed by a representative of the contracting officer. first article, production and sample tests. procedures kor conducting tests shall be prepared by the contractor an
45、d submitted to the contracting officer for approval 30 days prior to the initiation of any official testing. The Government reserves the 4.2.1 Tests. Table I lists the tests required for 4.2.1.1 Inspection and test procedures. The detailed . 12 Provided by IHSNot for ResaleNo reproduction or network
46、ing permitted without license from IHS-,-,-MIL- C- 289 17 (MC) III 4J O a, I3 I H a, I3 Para. Environmental 4.8 Temp. shock 4 SFrr 4.12 Sand and dust $2 I 4.11 I Salt fog I -12 12 I 4.10 Low pressure $2 Humidity High temp. +65O 4.5 Immersion 4.4 Shock 4.3 Vi brat ion 3.4.7 Standard condition d k rd
47、pi I t C A* ci (o ai ci c O .rl ci a O k pi II pi $ ci (o al ci ai 4 v) s II cn ci rn al ci al FI CJ .rl ci $4 (d ci *rl Frr Il E 2. al ci O z 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-28917 (MC) 4:,2,1.2 Tests to be performed. Units t
48、o be tested sha be thequantitles indicated. (a) First article. Unless otherwise specified, a quantity of ive complete units shall be used to complete these tests (see 3.2). Tests performed on one unitneed not be repeated on another. will select which units shall be subjected to each test. The Government representative (b) Production. All units shall be subjected to the production tests. (c) Samples. Sample units shall be randomly selected by the cognizant Government inspector. pty. produced Qty. to be tested 1-49 50-99 100-149 150-199 200-300 1
