1、i MIL-T-14LLI7A 66 9999906 0128789 2 M i i MI ITARY MIL- T- 141 47A (SigC) .IFIATIo. Superseding 12 August 1958 TEST FACILITIES KIT, TELEPHONE ME-T-l4147(SigC) CARHIER MK-155( )/TCC 30 August 1955 1 il. SCOPE 1.1 This specification covers one type of test kit for trouble- shooting and for testing pe
2、rformance characteristics of components .of various telephone terminal and, repeater equipments. 1.2 The test kit is portable and consists of the following items contained in two cases as indicated: (a) Transit Case I Items One case Assemblv (containing the following) Two Test Jack Assemblies One 60
3、0V Power Supply Test Cable Assembly One Repeater Panel Test Cable Assembly Three Carrier Test Cable Assembly Three Subgroup Test Cable Assemblies Three Carrier Supply Test Cable Assemblies Two Test Plug Assemblies Two Junction Panel Test Cable Assemblies One Transmission Test Cable Assembly One Test
4、 Panel Test Cable Assembly Two Junction Panel 600-Volt Test Cable Assemblies One Power Test Cable Assembly One Supply Test Cable Assembly One Modem andAmplifier Test Cable Ass ably Two Filter Section Te st Cable Assemblies One Extension Test Cable Assembly Nine Test Lead Assemblies (Black) Nine Test
5、 Lead Assemblies (Red) Two Test Lead Assemblies (Black) Two Test Lead Assemblies (Red) One Canvas Bag for Unassembled Parts One Canvas Bag for Cable Assemblies One Canvas Bag for Unassembled Parts One Canvas Bag for Cable Assemblies One Canvas Bag for Cable Assemblies One Canvas Bag for Cable Assemb
6、lies One Canvas Bag for Unassembled Parts One Canvas Bag for Cable Assemblies 8 Sheet 1 of 23 sheets -. -FSC 6625 THIS DOCUMENT CONTAINS 23.- - PAGES. Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without l
7、icense from IHS-,-,-Spec. No, MIL-T- 141 47A (SigC) ! l i# I In addition to the above there are unassembled parts consisting of capacitors, I I connector plugs, fixed and variable resistors and a semi-conductor, device (diode) which shall be provided in the quantities and types as covered in the con
8、tract. (See 6.l3) (b) Transit Case II. Items One Case Assembly (Containing the following) One Line Amplifier Test Set Assembly One Measuring Set Assembly One Matching Transformer Set Assembly 2. APPLICABLE DOCUMENTS 2.1 The following specifications, standards, drawings, and publications of the issue
9、 in effect on date of invitation for bids, form a part of this specification. SPECIFICATIONS FEDERAL QQ- S-5 7 1 LLL-F-291 PPP-B-621 PPP- T- 7 6 MILITARY MIL-E-1 MIL-P-116 MIL-B- 11 7 MIL-T-152 MIL-S-901 MIL-C-3885 MIL-M-1147 3 MIL-W-12683 Solder; Lead Alloy, Tin Lead Alloy, and Tin Alloy; Flux Core
10、d Ribbon arid Wire, and Solid Form Fiberboard; corrugated, single- ac e (Flexi He) Boxes, Wood, Nailed and Lock- Corner Tape, pressure-sensitive adhesive, paper, water resistant. Electron Tubes and Crystal Rectifiers Preservaion, Methods of Bags, Interior, Packaging Treatment, Moisture-and-Fungus Re
11、sistant, of Communications, Electronic, and Associated Elect rical Equipment Shockproof Equipment CIass HI (High-Impact) , Shipboard Application, test for Cable, Assemblies and Cord Assemblies, Electrical (for use in Electronic, Communication, and Associated Electrical Equipment) Requirements h r We
12、ldments other Than Armor) Magnetic- Particle- Inspec tion; Soundness Welding; Joint Designs, Data for (Structures 2 -i t- Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Spec. No.
13、 MIL-T-l4147A(SigC) MIL-M-13231 MIL- F- 14072 STANDARDS MILITARY MIL-STD- 105 MIL - STD- 12 9 MIL-STD- 169 MIL-STD-17 O MIL-STD-2 O0 MIL-STD-2 5 2 DRAWINGS SIGNAL CORPS sc- c-33073 SC-DL- 17364 SC- DL- 173648 SC-DL-173681 SC-DL-173654 SC-DL-173657 SC- DL- 173660 SC -DL-173667 SC- DL- 1 7 3664 SC-DL-
14、173670 SC-DL-173673 SC-DL-173676 SC-DL-173679 SC- DL-17 3 6 82 SC-DL-1736 85 SC-DL-173688 SC- DL- 17 3 693 SC-DL-173695 SC-DL-173703 SC-DL-173714 SM-C-17 372 8-1 SM-C- 17372 8-2 SM-C-173729-1 SM-C-173729-2 SC-DL-173730 SC-DL-1737 37 SM-D-17 3743 SM- D- 17 37 44 SM-D- 173745 Marking of Electm aic Ite
15、ms Finishes for Ground Signal Equipment Sampling Procedures and Tables for inspection Marking for Shipment and Storage Extrem e- Temperatur e Cycle Moisture-Resistance Test Cycle for G.romd Signal Electron Tubes Wired Equipment, Classification of Visual by Attributes Equipment and Mechanical Defects
16、 for Form to be used for Pilot Pack Process Sheet Test Jack Assembly 600V Power Supply Test Cable Assembly Repeater Panel Test Cable Assembly Carrier Test Cable Assembly Subgroup Test Cable Assembly Carrier Supply Test Cable Assembly Junction Panel Test Cable Assembly Test Plug Assembly Transmission
17、 Test Cable Assembly Test Panel Test Cable Assembly Junction Panel 600-Volt Test Cable Assembly Power Test Cable Assembly Suipply Test Cable Assembly Modem and Amplifier Test Cable Assembly Filter Section Test Cable hssembly Extension Test Cable Assembly Line Amplifier Test Set Assembly Measuring Se
18、t Assembly Matching Transformer Set Assembly Test Lead Assembly (Black) Test Lead Assembly (Red) Test Lead Assembly (Black) Test Lead Assembly (Red) Case Assembly Case Assembly Canvas bag for Unassembled Parts Canvas bag for Cable Assemblies Canvas bag for Unassembled Parts 3 I .: . i - -. -y. I Cop
19、yright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Spec. No. MIL-T- 14147A (SigC) SM- D- 17 37 46 Canvas bag for Cable Assemblies SM-D-173 747 Canvas bag for Cable Assemblies SM-D- 17 3
20、74 8 Canvas bag for Cable Assemblies SM-D- 173749 Canvas bag for Unassembkd Parts SM-D-173750 . Canvas bag for Cable Assemblies (Copies of specifications, standards, drawings and publications required by contract- ors in connection with speQi6ic procurement functions should be obtained from pro- cur
21、ing activity or as directed by the contracting officer. Both the title and number or symbol should be stipulated when requesting copies). 2.2 Other publications. - The following documents form a part of this specifica- tion. Unless otherwise indicated, the issue in effect on date of invitation for b
22、ids shal apply. a. For rail (both shall be used) (1) Uniform Freight Classification No. 4 Uniform Freight Classification 202 Union Station Chicago, 6, illinois (2) Consolidated Freight Classification Rules No. 21 Consolidated Classification Committee 1 Park Avenue and 33rd Street New York 16, New Yo
23、rk b. For truck National Motor Freight Classification No. A-3 and No. 14 American Trucking Association, incorporated 1424 Sixteenth Street N. W. Washington 6, D. C. 3. REQUIREMENTS 3.1 Description. - The test facilities kit consists of a group of pecial purpose cable assemblies, jack and plug assemb
24、lies, a measuring set, a matching trans- former set, a line amplifier test set, a set of unassembled parts, all contained in two trans it cases. 3.2 Construction. - Construction of the equipment shall be in accordance with applicable drawhgs specified in Section 2. However, if specified performance
25、characteristics cannot be obtained by strict conformance with the drawing, the speci- fied performed characteristics shall govern. 3.3 Components and Accessories. - The various cable assemblies shall be constructed in accordance with the following drawings, and shall conform to all re- quiqements of
26、 Specification MIL-C-3885 and shall be capable of passing tests in section 4. - 4- rn .- Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-L4147A 66 9999906 0128793 4 W Spec.
27、No. MIL-T-14147A (SigC) Items Test Jack Assembly 600V Power Supply Test Cable CAssembly Repeater Panel Test Cable Assembly Carrier Test Cable Assembly Subgroup Test Cable Assembly Carrier Supply Test Cable Assembly Test Plug Assembly Junction Panel Test Cable Assembly Transmission Test Cable Assembl
28、y Test Panel Test Cable Assembly Junction Panel 600-Volt Test Cable Assembly Power Test Cable Assembly Supply Test Cable Assembly Modem and Amplifier Test Cable Assembly Filter Section Test Cable Assembly Extension Test CableA s sembly Test Lead Assembly (Black) Test Lead Assembly (Red)! Test Lead A
29、ssembly (Black) Test Lead Assembly (Red) Drawing No. SC-DL- 173644 SC-DL- 17 3 648 SC-DL-173651 SC-DL- 17365 4 SC-DL-173657 SC-DL- 17 3 6 6 O SC-DL-173664 SC-DL- 17 3 667 SC-DL-173670 . SC-DL-173673 SC-DL-173676 SC-DL-173679 SC-DL- 173682 SC-DL-173685 SC-DL- 17 3 68 8 SC-DL-173693 S M-C-173728-1 SM-
30、C-173728-2 SM- C- 173729- 1 SM- C- 1 73729-2 3.4 Transit case. - The two (2) transit cases shall be manufactured in accord- ance with the following drawings, and shall be capable of passing the test o 4.7. Items Case Assembly Case Assembly Drawing No. SC-DL- 173730 SC-DL-173737 3.5 Canvas bag. - The
31、 eight (8) canvas bags shall be manufactured in accordance with the following drawings (See 6.3) Items Drawing No. Canvas Bag for Unassembled Parts Canvas Bag for Cable Assemblies Canvas Bag for Unassembled Parts Canvas Bag for Cable P,ssemblies Canvas Bag for Cable Assemblies Canvas Bag for Cable A
32、ssemblies Canvas Bag for CUnassembled Parts Canvas Bag for Cable Assemblies SM-D- 173743 SM- D- 173744 SM- D-1737 45 SM-D- 173746 SM-D- 1737 47 SM-D-173748 SM- D-173749 SM-D-173750 3.6 Measuring Set Assembly - 3.6.1 Construction. - The measuring set assembly shall be constmcted in accord- t ance wit
33、h Drawing SC-DL-173703. Howvec if specified performance cGracteristicE cannot be obtained by strict conformance with the drawing, the specified performance characteristics shall govern, 3.6.2 Requirements. - The resistance requiremes shall .be as specified in - -5- SC-DL-173703. The equipment shall
34、be tested in accordance with section 4. (See -4.6.2.1) Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-L MIL-T-34147A bb W 7779906 0328794 b = Spec. No. MIL-T-14147A (SigcC) 3.6.3
35、 Continuity. - The equipment shall be given a continuity test as specified in paragraph 4. 6.1. 3. 6.4 Operationa1,Requirement. - The equipment shall be capable of indicating O db when a test signal of 1000 cps at O db level is applied to the input of the measurin set assembly. (Set 4. 9) 3.7 Matchi
36、ng - Transformer Set. 3.7.1 Construction. - The matching transformer set shall be constructed in accordance with Drawing SC-DL-173714. However, if specified performance characteristics cannot be obtained by strict conformance with the drawing, the specified performance characteristics shall govern.
37、3.7.2 Requirements. - The resistance requirements shall be as specified in Drawing SC-DL-173714. The equipment shall be tested in accordance with section 4. (See 4.6.2.2). 3.7.3 Continuity. - The equipment shall be given a continuity test as specified in paragraph 4.6.1. 3. 8 Line Amplifier Test Set
38、 3.8.1 Construction. - The line amplifier test set shall be cqnstructed in accord- ance with Drawing SC-DL-173695. However, if specified performance Characteristics cannot be obtained by strict conformance with the drawing, the specified performance characteristics shall govern. 3.8.2 Requirements.
39、- The resistance requirements shall be as specified in SC-DL-173695. The equipment shall be tested in accordance with section 4. (See 4. 6.2.3). 3. 8 3 Continuity. - The equipment shall be given a continuity test as specified in paragraph 4.6.1. 3.9 Preproduction Samples. - The contractor shall furn
40、ish preproduction sample for approval, as required by the invitation for bids and contract. (See 6.2(e). 3.10 Soldering. - 3.10.1 Solder. - Solder used for electrical connections shall be composition Sn60 conforming to Specification QQ-S-571. 3.10.2 Flux and cleaning agents. - No acid or acid salts
41、shall be used in pre- paration for or during soldering; however, exception is permitted for preliminary tinning fof electrical connections and for tinn ing or Soldering of mechanical joints 6 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo repro
42、duction or networking permitted without license from IHS-,-,-Spec. No. MIL-T- 141 417A (SigC) not used to complete electrical circuits, but in no case shall acid or acid salts be used where they can come in contact with insulation material. Where acid or acid salts are used, as permitted above, they
43、 shall be completely neutralized and removed immediately after use, Flux for solderi ng of electrical connections shall be rosin, rosin and alcohol, or rosin and turpentine. 3.10.3 Process. - There shall be no sharp points or rough surfaces resulting from insufficient heating. The soler shall feathe
44、r out to a thin edge, indicating proper flowing and wetting action, and shall not be crystallized, overheated, or under- heated. The minimum necessary amount of flux and soler shall be used for electrical connections. Any means employed to remove an unavoidable excess of flux shall not incur the ris
45、k of loose particles of flux, brush bristles, or other foreign material remaining in the equipment; flux being spread over a larger area; or damage to the equipment. Insulation material that has been subjected to heating during the soldering operation shall be undamaged and parts fastened therto sha
46、ll not have become loosened. 3.11 Welding. - Welds shall be of ample size. Where tack or spot welds are employed: the number of welds shall be of sufficient to provide adequate strength and at least two welds shall be used to hold each welded part. Spot or tack welds in aluminum or magnesium shall b
47、e limited to lightly stressed, noncritical structures. Wherever practicable, the welded joint shall conform to Specification MIL-W-12 683. and shall be such that grinding on the finished weld will be unnecessary. 3.11.1 Cleaning. - Surfaces to be welded shall be cleaned in accordance with good comme
48、rical practice and shall be free from rust, scale, paint, greas.e and other foreign material. Welded assemblies shall be cleaned to remove scale; oxidation products, and excess flux by sandblasting, wire brushing, or other suitable menas. Acid used for cleaning shall be completely neutralized and re
49、moved. 3.11.2 Process. - Preheating shall be employed where distortion is likely to result from welding. Welds shall have thorough penetration and good fusion and shall be free from scabs, blisters, abnormal pock marks, and other harmful defects. Where undesirable internal stresses are likely to result from welding, the welded assembly shall be stress-relieved. Inert-gas-shielded arc welding shall be used, when practicable, for wel
