1、MIL-T-UO (EL) 12 April 1977 MLITARY SPECIFICATION TELEPHONE SET TA-838( )/TT This specification is approved for use by the Electronics Command, Depart- ment of the Arniy, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 designated as Telephone Set T
2、A-838( )/TT. 2. APPLICABLE DOCUMENTS This specification covers one type of 2-wire/h-wire field telephone, (See 6.1 and 6.5.) 2.1 Issues of documents. The foilowing documents, of the issue in effect on the date of invitation for bids or request for proposal, form a part of this specification to the e
3、xtent specified herein. SPECIFICAT IONS FEDERAL NN-P-71 Pallet, Materials-handiing, Wood QQ-S-781 . Strapping, Steel, Flat and Seals PPP - E58 5 PPP- B-6 O1 PPP- 13-621 PPP-E636 Boxes, Fiber Box, Wood, Wirebound Boxes, Wood, Cleated-Plywood Boxes, Wood, Nailed and Lock-Corner Beneficial comments (re
4、commendations, additions, deletions) and any perti: nent data which may be of use in improving this document should be addressed to: Cdr, S Army Electronics Command, ATTN: RRSEL-RD-TS-S, Fort Monmouth, N.J. 07703 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426
5、) appearing at the end of this document or by letter. U I Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-47110 58 M 777770b 0157445 4 MIL-T-49110 (EL) PPP-B-640 PPP-F - 32
6、O PPP-s -760 PPP-T -97 MILITARY MIL-P-U6 1-11268 MIL-M-13231 MIL-F-14072 MIL-P-19W MIL-P-26sI.b STANDARDS FEDERQL FED-STD- MILITARY . MILSTD-lOS .% MIL-STD-129 MILSTD-1IC7 MIL-STD-2 52 MIL- SrD-454 Box, Fiberboard, Corrugated, Triple Wall Fiberboard, Corrugated and Solid Sheet Rock Strapping, Nonmet
7、allic (and Connectors) Tape, Pressure-Sensitive Adhesive, Filament Reinforced Preservati on-packaging , Methods of Parts, Materials, and Processes used in Electronics Equipment Marking of Electronic Items Finishes for Ground Electronic Equipment Plastic Molding Material (Polystyrene Foam) Polyuretha
8、ne Foam Paint, Varnish, Lacquer and Related Materials, Methods of Inspection, Sampling and Testing Sampling Procedures and Tables for inspection by Marking for Shipment and Storap Panetized and Containerized Unit Loads Wired Equipment, Classification of Visual and Standard (teneral Requirements for
9、Electronic Attributes w Mechanical Defects Equipment 2 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-LISLLO 5 7777706 0357446 6 MIL-T-UO (EL) MIL-STD- Electromagnetic Inte
10、rference Characteristics Requirements for Equipment Subsystems, and systems MIL-STD-462 Electromagnetic Interference Characteristics, Measurement of MIL-STD- 781 Reliability Test,s Exponential Distribution 1IL-STD-810 Environmental Test Methods DRAWINGS ELECTRONICS COMMAND DGSM-B-790663 Telephone Se
11、t TA-838 ( )/TT SM-A-790762 Production Test Procedures for Telephone Set TA-838 ( )/TT (Copies of documents required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer. ) 3.1 First Article. contrac
12、tor shall furnish sample units for First Article inspection and approval (See 4.3). When specified in the contract or purchase order, the 3.2 Construction. requirements of this specification and Drawing and Data List DL-SM-B-790663, (including the requirements for parts, materials, and processes the
13、reon) (see 4.4). The equipment shall be constructed in accordance with the 3.3 Parts, Materials, and Processes, General. In addition to the require- ments of this specification, the requirements of MIL-P-u, including the selection req and location of the mating parts on the plug-in assembly or major
14、 unit. e. Size and form of special threads. 4.9 Electrical 4.9.1 Random Noise. in paragraph 3.6 of SM-A-790762 and meet the requirements of 3.8.1. 4.9.2 Audible and Visual Signals. The equipment shall be subjected to the test specified in paragraph 3.7 of SM-A-790762 and meet the requirements of 3.8
15、.2. The equipment shall be subjected to the test specified Y 4.9.3 DTW Signalline. fied in paragraph 2.2, Step 4, of SM-A-790762 and meet the requirements of 3.8.3. The equipment shall be subjected to the test speci- l4 . _- Copyright Communications - Electronics Command Provided by IHS under licens
16、e with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-PlIL-T-LI7110 58 7777706 0157q58 2 MILT -49llO (a) The equipment shall be subjected to the test specified in 4.9.4 Seizure. paragraph 2.2, Step 1, of SM-A-790762 and meet the requirements of 3.8.4.1.1. 4.9.
17、5 Release. paragraph 2.2, Steps 2 and 3, The equipment shall be subjected to the test specified in of IS-A-790762 and meet the requirements of 3.8.4.1.2. 4.9.6 Signal Detection. The specified in paragraph 2.4 of 3.8 .I+. 1 3 4.9.7 AC/DC Common Jhtterz. specified in paragraph 2.5 of 3.8 A.2. equipmen
18、t shall be subjected to the tests SM-A-790762 and meet the requirements of The equipment shall be subjected to the tests SM-A-790762 and meet the requirements of 4.9.8 Point-to-Point. fied in paragraph 3.2 of SM-A-790762 and meet the requirements of 3.8.4.3. 4.9.9 Extension Control/Current Drain. Th
19、e equipment shall be subjected to the tests specified in paragraph 3.1 of SM-A-790762 and meet the requirements of 3.8 4.4 and 3.8 .4 .5 . The equipment shall be subjected to the test speci- 4.9.10 Return Loss. The equipment shall be subjected to the tests speci- fied in paragraph 3.4 of SM-A-790762
20、 and meet the requirements of 3.8.4.6. 4.9.ll Send Output/Sidetone. specified in paragraph 2.3 of SM-A-790762 and meet the requirements of 3.8.4.7 and 3.8.4.8. The equipment shall be subjected to the tests 4.9.12 Receive Circuit Loss, Crosstalk, Clipping, Distortion. The equip- ment shall be subject
21、ed to the applicable tests of paragraph 3.5 of SM-A-790762 and meet the requirements of 3.8.4.9, 3r8.4.10, 3.8.4.11 and 3.8.4.12. 4.9.13 Signal Rise Time. specified in paragraph 3.3 of SM-A-790762 and meet the requirements of 3 . 8 .S. 13 . The equipment shall be subjected to the test 4.9.l.4 Acoust
22、ic Decoupling. Specified in paragraph 3.8 of SM-A-790762 and meet the requirements of 3.8.5 .lh. 4.9.15 tests of paragraph 2.6 of SM-A-790762 and meet the requirements of 3.8.5.1 and 3.8.5.2. 4.9.16 Ring Current. The equipment shall be subjected to the test speci- fied in paragraph 3.9 of SM-A-79076
23、2 and meet the requirements of 3.8.5.3. The equipment shall be subjected to the test U Send Output/Sidetone (2Wl. The equipment shall be subjected to the _- Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted wit
24、hout license from IHS-,-,-* MIL-T-SLLO 58 W 7777706 0357457 4 4.9.17 Heceive Circuit Loss (2W). test specified in paragraph 3.10 of SM-A-790762 and meet the requirements of 3.8.5.4. The equipment shall be subjected to the 4.9.18 subjected to the testa specified in paragraph 3.11 of SM-A-790762 and m
25、eet the requirements of 3.8.5.5 and 3.8.5.6. 4.9.19 Return Loss (2FIL. specified PPP-B-621, style 4, class 2; or PPP-B-585, style 2 or 3, class 3. When the gross weight exceeds 200 pounds, or the container length and width is 48 x 24 inches or more and .the weight exceeds 100 pounds, 3 x 4 inch skid
26、s, laid flat, shall be applied in accordance with the require- ments of the container specification, or if not specified in the specifica- tion, in a manner which will adequately support the item and facilitate the use of material handling equipment. ance with the applicable container specification
27、or appendix thereto except that metal strapping shall conform to QQ-S-781, type 1, finish A. 5.2.1.1 Unitization. Palletization shall be required when: Containers specified in 5.2.1 do hot require skids; quantitites per destination comprise a.pallet load; and container size permits use of one of the
28、 pallet patterns of MILSTD-147. except that container strapping may be moitted, shall be placed on a pallet, load type 1, conforming to MIL-STD-47. type IV, group I or II woods. strapping conforming to QQ-S-781, type 1, finish A, or shrink film. 5.2.2 Level B. specified in t.1, shall be packed withi
29、n a close-fitting fiberboard box con- forming to PPP-B-640, class 2, style E, or PPP-B-636, type CF, class weather- resistant. exceed 250 pounds. applicable box specification. Reinforcing shall be by pressure-sensitive filament tape banding or nonmetallic strapping conforming to PPP-T-97 and PPP-S-7
30、60, respectively; selection of the material and application shall be in accordance with the appendix of the applicable box specification. the gross weight exceeds 200 pounds, or the container length and width is 48 x 24 inches or more and the weight exceeds 100 pounds, containers will be pallet-moun
31、ted on pallets conforming to NN-P-71, group I or ,II woods. load shall be ltbonded1! to the pallet by strapping conforming to QQ-S-781, type 1, finish A, or shrink film. destination no packing is required; the unit container shall serve as the shipping container. 5.2.2.1 Unitization. Palletization s
32、hall be required when quantities per destination comprise a pallet load. TA-838( )/TT, unit packed as specified in 5.1, shall be placed on a pallet, load type 1, conforming to MILSTD-l-47, NN-P-71, type IV, group I or II woods. A fiberboard cap shall be employed 21 Closure and strapping shall be in
33、accord- A qu National Stock Number, or part number when HSN is not given; Government contract or purchase order number ; quantity; contractor s policy/Frccedures; exterior ccntainers shall also be marked with the appropriate address markings. by any means which provide legibility. 6 NOTES 6.1 Intend
34、ed Use. Telephone Set TA-838( )/TT is a solid state, Dual Tone Modulated Frequency (IYlIg), Two-wire and Four-wire telephone intended for use in automatic switching systems under severe tactical environments. ing power is obtained from common or local batteries. 6.2 Ordering Data. Procurement docume
35、nts should specify the following: there to. b. Section 5) . C. d. In addition to any special marking required by Markings may be applied I perat- a. Title, number, and date of this specification and any amendment Level A, level B or Commercial preservation and packing (See When the rough handling te
36、st is required (See 4.15). When First Article samples are required (See 4.3.1). 6.3 Environmental. Environmental pollution prevention measures are contain- ed in the packaging material specifications referenced herein. material specifications or preparing activity for recommended disposability metho
37、ds. 6.4 Group C Inspection. of the Government, pending the decision from the contracting officer on the adequacy of corrective action (See 4.5.3.3). Refer to . U Approval to ship may be withheld, at the discretion 22 . Copyright Communications - Electronics Command Provided by IHS under license with
38、 CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-6.5 Nomenclature. replaced by a letter identifying the particular design; for example: TA-838WTT. the applicable clause in the contract. 6.6 Verification Inspection. Verification by the Government will be limited
39、 to the amount deemed necessary to determine compliance with the contract and will be limited in severity to the definitive quality assurance provisions established in this specification and the contract. of verification inspection by the Government will be adjusted to make maxi- history of the prod
40、uct. 6.7 Location of Operational Inspection. It is desirable that the operation- al inspection (4.9.20) be perfornied at a location that will minimize handling (which might cause damage to the equipment) after this inspection is com- pleted. inspected sample units) be sampled and inspected immediate
41、ly prior to packag- ing. The parentheses in the nomenclature will be deleted or The contractor should apply for nomenclature in accordance with The amount . mum utilization of the contractors quality control system and the quality It is recommended that the entire lot (including all previously 6.8 D
42、efinitions 6.8.1 Branching. Branching is a connected arrangement of filaments (hyphol) formed by shoots or secondary items growing from the main stem or filament (hypha 1 6.8.2 Growth Colonization. Growth colonization is a mass of individual plants, generally of one species, living together; or a gr
43、oup of hyphae which is formed from one spore or cell and may be one individual plant. tion which completely covers the surface of the nutrient material constitutes abundant growth. 6.8.3 Microbial Growth. organisms. colonly visible to the naked eye. 6.8.4 Sporulation. Sporulation is the formation of
44、 minute unicellular reproductive or domt bodies, called spores Coloniza- Microbial growth is the growth of very minute Such organims, when present in large numbers, mey provide a 6.8.5 Tubular Germination. Tubular germination is partial growth by the Tubular germination constitutes restricted indivi
45、dual spore growth not proceeding ta colonization. U . production of hyphae, which are tubular shaped fungae filaments. 23 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Custodian
46、: Arrrgr - (EL) MIL-T-47110 58 7977706 0357467 3 i , - .- 6.8.6 Exfoliation. Exfoliation is corrosion dong the grain boundaries of -the metal resulting in the peeling or separating, or both, of successive ayers of the metal. The appearance resembles loose book pages or onion skin peeling. 24 .- .Y P
47、reparing Activity knlv - (EL) Project No. 58054240 1 Y Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. W f 2 5 v) w cd I- u n I ? W I- W u - h I I Il I I 1 I I MIL-T-LmlO (EL) O
48、 * 1 u) m N v) Om O Y- cni I I O O -_ 3 . W NI 13A31 IndNI 13s 3PIOHd3131 :f _2_7 . N I z. .- u?! z wo 8“: W U Y O Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-T-49110 5B
49、m 3799406 01594b9 7 m RELIABILITY TEST PLAN /9 / / U /I I I I I -+ 2.5 5 7.5 10 12.5 15.0 TOTAL TEST TIME (IN MULTIPLES OF SPECIFIED MTBF) (T) FIGURE #2 26 U. S. GOVERNMENT PRINTING OFFICE: 1977 -703-020/2842 . . o Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,
