1、MIL-C-28914 (MC) 21 March 1969 MILITARY SPECIFICATION CONTROL UNIT - RECTIFIER, C-7673/PCC-1 1. SCOPE 1.1 This specification covers requirements for one type transportable control unit-rectifier. 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on date of invitation for bid
2、s or request for proposal, a part of the specification to the extent specified herein. form SPECIFICATIONS MILITARY MIL-T-152 - Treatment, Moisture and Fungus-Resistant, MIL-T-7 O 4 - Treatment and Painting of Materiel. MIL-P-15024 - Plates, Identification-Info connects the handset microphone to the
3、 transmitter of rt No. 1 and the receiver of the handset to rt No. 2. (6-psi tion rotary) No. 1. connects the handset to No. 2. connects the handset to 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-28914 (MC) Control or Switch Connector Pos
4、it ion Function TLG CHANS switch, S12 (2-position toggle) HANDSET connector, 521 ONE HAN DX Applies power to rt No. 1 RT 2 TR and No. 2; connects the handset microphone to the transmitter of rt No. 2 and the receiver of the handset to rt No. 1. RT 1 TR and No. 2 and to the MULTI CHAN DX Applies powe
5、r to rt No. 1 carrier terminal; connects the hf transmit output of the terminal to the trans- mitter of rt No. 1 and the output of the receiver of rt No. 2 to the hf receiving input of the terminal; connects the handset to the terminal through its handset connector . MULTI CHAN DX Applies power to r
6、t No. 1 RT 2 TR and No. 2 and to the carrier terminal; connects the hf transmit output of the terminal to the trans- mitter of rt No. 2 and the output of the receiver of rt No. 2 and the output of the receiver of rt No. 1 to the hf receiving input of the terminal; connects the handset to the termina
7、l through its handset connector. ON OFF Connects power to the telegraph circuits of the terminal. Removes power from the telegraph circuits of the terminal. Provides connection for the handset. I I- 10 I t Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-
8、,-,-1- MIL-C-28914 58 9999906 0156162 T W MIL-C-28914 (MC) Control or Switch Connector Position Function POWER SOURCE DRY BAT. switch, S13 ( 5-psi t ion rotary) BB-451 OFF VEH 115 VAC 3A AC fuses F5 and F6 (3-ampere) VEH 5A fuse F7 (5-ampere) BB-451 5A Fuse F8 (5-ampere) Connects the BA-386/PRC-25 b
9、atteries in the battery boxes of the rt through S1 and to the voltage doubler to supply the terminal . BB-451/U to the terminal through S1 and to the Connects the Battery, voltage divider to supply the rt. Disconnects all power. Connects the vehicle battery to the terminal through S1 and to the volt
10、age divider to supply the rt. Connects 115 Vac to the rectifiers to provide power to the rt and the terminal. Protect the alternating current (ac) connections. Protects the connection from the vehicle battery. from Battery, BB-451/U. Protects the connection 11 o .- I Provided by IHSNot for ResaleNo
11、reproduction or networking permitted without license from IHS-,-,-MIL-C-28914 (MC) 3.7.2 Rear panel. The rear panel of the Control Unit- Rectifier, C-7673/PCC-1, shall contain the following connectors and shall be identified as follows: Captive cable connectors Function TH-81 HANDSET Connects to HAN
12、DSET connector of Terminal, Telegraph-Telephone, TH-8 I./GCC . TH-81 HF Connects to hf connector of Terminal , Te 1 egraph-Telephone, TH-81/GCC BB-451 Connects to Battery, BB-451/U 24 V BAT Connects to 24-V vehicle battery. 115 VAC RT-505 POWER No. 1 RT-505 POWER No. 2. Connects to 115 Vac Supply. C
13、onnects to Receiver-Transmitter, RT-505/PRC-25 No. 1. Connects to Receiver-Transmitteq, RT-505/PRC-25 NO. 2. 3.7.3 Protective fuse. There shall be an internal 3/8-A fuse to protect modules in the event of failure of regulator Transistor, Ql, to ensure that correct operation of t-he circuit is verifi
14、ed before fuse replacement. 3.8 Dimensions. The maximum external dimensions of the control unit-rectifier shall not exceed 9.750 inches wide by 7.500 inches deep by 2.125 inches high. 3.9 Weicrht. The weight shall not exceed 8 pounds. 3.10 Identification plates. Identification plates shall be in acc
15、ordance with MIL-P-15024 and shall be of aluminum alloy where possible. plates shall be submitted for approval 90 days prior to first Drawings for identification 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-28914 58 m 9999906 035b364 3 m
16、MIL-(2-28914 (MC) article tests. Nomenclature shall be requested in accordance with MIL-E-21981 and shall be submitted 90 days prior to the first article testing. 3.11 Workmanship. Units covered by this specification shall be manufactured and finished in accordance with MIL-E-16400. 4 . QUALITY ASSU
17、RANCE PROVISIONS 4.1 Responsibilitv for inspection. Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contractor or order, the supplier may use his own
18、 or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure suppli
19、es and services conform to prescribed requirements. 4.2 Inspection and tests. Inspection and tests shall consist of all tests specified herein to demonstrate that the units submitted for approval meet all requirements of this specification. First article testing will be witnessed by a representative
20、 of the contracting officer. 4.2.1 Tests. Table I lists the tests required for first article production and sample tests. 4.2.1.1 Inspection and test procedures. The detailed procedures for conducting tests shall be prepared by the contractor and submitted to the contracting officer for approval 30
21、days prior to the initiation of any official testing . 4.2.1.2 Tests to be performed. Units to be tested shall be the quantities indicated. (a) First article. Unless otherwise specified, a quantity of five complete units shall be used to complete these tests not be repeated on another. will select w
22、hich unit will be subjected to each test. (see 3.2) . Tests performed on one unit need The Government representative 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Standard Condition Vi brat ion 3.4.6 4.3 High temp. +65O C Low temp. -400 C Humidi
23、 ty Low pressure Salt fog Sand and dust 4.6 4.7 4.9 4.10 4.11 4.12 O C rr U C rr 2 I- rr P, 09 (D r O P, a 2 Y Y (D =I I? - w a I- N . Cn 09 (D o G Y rl (D 3 rt 5 w a I- w o P. Y o rt E. w Q I- c-. w CI N w Q I- C Environmental Para, +?I * d ki * P P Y * Y * P P Shock I 4.4 2 I 4.5 ki * Immersion P
24、CnY * CnY * CnY * nki * CnY * P 2 Y x- Y * Y * Y * Temp. shock 4.8 14 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- ! NIL-C-28714 58 U 7977706 0156166 7 I . MIL-C-28914 (MC) (b) Production. All units shall be subjected to the production tests. (c)
25、 Samples. Sample units shall be randomly selected by the cognizant Government inspector. Qtv. produced 1-49 50-99 100-149 150-199 200-300 Qtv. to be tested 1 2 J 4 One additional 5 equipment per 100 units. 4.3 Vibration test. One unit shall be subjected to the following vibration test with the unit
26、operating. The unit shall be affixed to the vibration table and be subjected to the following conditions. Vibration in the frequency range of 10 to 55 Hz at 5 gravity (9) or 0.060 inch total excursion, whichever is the limiting value. The frequency change shall be at a rate of less than 1 Hz. The du
27、ration of the test shall be 1/2 hour in each of three planes. There shall be no rigid body resonances and no signs of internal or external physical deterioration. 4.4 Shock test. One unit shall be subjected to the following shock test with the unit operating. shall be mounted rigidly on the adapter
28、plate of the LAB package testing machine. The machine shafts shall be operated peak accelerations of 10 gls with occasional peaks of 20 gls as measured on the case of the equipment Malfunction is permissible provided that normal operation can be restored by adjustment of front panel controls. There
29、shall be no signs of internal or external physical deterioration. The unit in phase and adjusted in speed to produce average 4.5 Immersion (leakaae) test. The unit shall be sub- merged in water to a depth of 3 feet, measured from its highest point. The unit shall be held in this position for 1 hour,
30、 and during the test all panel controls shall be operated three times through their full travel. There shall be no entry of water into the unit. There shall be no signs of internal or external physical deterioration. 15 Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
31、ense from IHS-,-,-MIL-C-28914 (MC) 4.6 Hiah temperature test. The unit shall be tested in accordance with procedure Z method 501, of MIL-STD-810 . The unit shall be operate$ at a temperature not less than 600 C nor greater than 65 C. 4.7 Low temperature test. The unit shall be tested in accordance w
32、ith procedure I; method 502, of MIL-STD-810. The unit shall be operated at a temperature not greater than -40 C. 4.8 Temperature shock test. The unit shall be tested in accordance with procedure I, method 503,of MIL-STD-810, with exception that the maximum temperature shall be 71 C. 4.9 Humidity tes
33、t. The unit shall be tested in accordance with procedure I, method 507, of MIL-STD-810. 4.10 Low pressure test. The unit shall be tested in accordance with procedure I, method 500,of MIL-STD-810. 4.11 Salt fog test. The unit shall be tested in accor- dance with procedure I, method 509,of MIL-STD-810
34、. Salt deposits shall be removed by rinsing with tap water. 4.12 Sand and dust test. The unit shall be tested in accordance with procedure I, method 510,of MIL-STD-810. 4.13 Interference test. The unit shall be tested for conducted interference and radiated interference in accor- dance with MIL-STD-
35、826. 4.14 Test reports. The contractor shall prepare and submit to the procuring agency copies of all test reports not less than 10 days after completion of tests. 4.15 Approval. Approval of the first articles shall be by the contracting officer upon satisfactory completion of all tests. 4,16 Accept
36、ance. With exception of the first articles, acceptance of all items shall be by the cognizant Government inspector . 5. PREPARATION FOR DELIVERY 5.1 Preservation, packaqing and packing. Preservation, packaging and packing shall be level A or C in accordance with MIL-E-17555 as specified in the contr
37、act or order (see 6.2) . I I 16 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-28914 (MC) 5.2 Markinq. In addition to any special marking required by the contract or order, unit packages, intermediate packages, and shipping containers shall be
38、 marked in accor- dance with the requirements of MIL-STD-129. 6. NOTES 6.1 Intended use. This unit is to be employed with the Terminal, Telegraph-Telephone, TH-81/GCCt to provide power and switching of this unit and the associated rt sets under tactical conditions. 6.2 Orderinq data. Procurement doc
39、uments should specify the following: (a) Title, number, and date of this specification. (b) Quantity of first articles required (see 3.2 and (c) Level of preservation, packaging, and packing (see 4.2.1.2(a) . 5.1) . 6.3 Color. .Color chips for Marine Corps green,No. 23, may be obtained from the Comm
40、andant of the Marine Corps (Code CSY-101, Headquarters, U. S. Marine Crps, Washington, D. C. 20380. 6.4 First article. The first articles shall be examined and tested for approval, at the contractors plant or at an independent commercial testing laboratory acceptable to the procuring activity. First
41、 article tests shall be witnessed by a Government representative of the procuring activity. Approval of the first articles shall be by the contracting officer . 17 Preparing activity: Project No. 5805-N137 Navy - MC I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
