1、MIL-T-23330A 58 m 7777906 0352050 I m MIL-T-23330A (MC) 17 November 1971 SUPERSEDING MIL-T-23330 (MC) 13 June 1962 MILITARY SPECIFICATION TELETYPEWRITER SET : AN/TGC-l4A(V) 1. SCOPE “1.1 This specification covers one type portable, self contained send/receive teletypewriter set, consisting of a keyb
2、oard and page printer, housed in a watertight transit case. 2 . APPLICABLE DOCUMENTS *2.1 The following documents of the issue in effect on the date of invitation for bids or request for proposal form a part of the specification to the extent specified herein. SPECIFICATIONS FEDERAL uu-P - 5 47 UU-P
3、-548 DDD -R - 3 O 6 MILITARY . *MI L-P - 1 5 O 24 MIL-E-16400 MIL-E-17555 MIL-H-46855 - Paper, Teletypewriter, Roll. - Paper, Teletypewriter, Roll, For Spirit-Process Duplication. - Ribbons, Teletypewriter. - .Plate, Identification - Information And Marking For Identification Of Electrical, Electron
4、ic And Mechanical Equipment. Shore; General Specification. Accessories, And Repair Parts, Packaging And Packing Of. - Human Engineering Requirements For Military Systems, Equipment And Facilities - Electronic Equipment, Naval Ship And - Electronic And Electrical Equipment, FSC 5815 I- L o Provided b
5、y IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-23330A 58 9 7777706 0352053 3 9 MIL-T-23330A (MC) STANDARDS FEDERAL FED-STD-595 - Colors. MILITARY MIL-STD-108 - Definition Of, And Basic Requirement MIL-STD- 167 - Mechanical Vibrations Of Shipboard MIL-ST
6、D-188 - Military Communication System MIL - STD - 4 6 1 - Electromagnetic Interference For Enclosure For Electric And Electronic Equipment. Equipment. Technical Standards . Characteristics, Requirements For Equipment. Characteristics, Measurement Of. Electromagnetic Interference Technology . MIL-STD
7、-462 - Electromagnetic Interference MIL-STD-463 - Definition And System Of Units, MIL-STD-810 - Environmental Test Methods . (Copies of specifications and standards required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed
8、 by the contracting officer.) 3. REQUIREMENTS “3.1 First article. Unless otherwise specified (see 6-21, the contractor shall furnish two first articles for testing under the direction and supervision of the cognizant Government inspector to determine conformance to this specification. set which will
9、 be identical to the production units which the contractor will subsequently produce in fulfillment of the contract. concerned shall not relieve the contractor of the responsi- bility to supply teletypewriter sets conforming to this specification. Examination and testing shall be as specified First
10、article is defined as a teletypewriter Approval of the first articles by the activity 2 o Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-23330A 58 7779906 0352052 5 MIL-T-23330A (MC) herein. from the first articles shall be subject to the appr
11、oval of the contracting officer. in the final shipment as part of the total quantity to be supplied under the contract, provided they have been completely refurbished. Any changes or deviations of the production units The first articles may be included *3.2 Parts and materials. In the selection of p
12、arts and materials, fulfillment of major design objectives shall be the prime consideration. requirements as to nonflammability, fungus resistance, and nontoxicity as required by MIL-E46400 must be met. doing so, the following factors shall govern: In all cases, general material In *3.2.1 Electronic
13、 components. Parts and materials listed in MIL-E-16400 shall be given first consideration. of parts or materials in accordance with MIL-E-16400 will not fulfill the design objective because of size, weight, performance, or other reasons, the use of other materials may take precedence, with the appro
14、val of the contracting officer. complied with, whenever possible, without sacrifice of the design objectives of size, weight, performance, reliability and ease of maintenance. Where mechanical parts whose function is to rotate, oscillate or cam against others are employed, and best choice of materia
15、ls comprises materials other than those listed in MIL-E-16400, use of those materials may take precedence, with the approval of the contracting officer, provided that maximum life is achieved by use of lubricating agents, protective paints or sprays or other methods. -When use *3.2.2 Mechanical comp
16、onents. MIL-E-16400 shall be *3.2.3 Moisture and funqus treatment. The teletypewriter set shall be fungusproofed by selection of parts and materials which are nonnutrient for fungus or by treatment of the parts and materials prior to their use in the tele- typewriter set so that overall spraying of
17、the teletypewriter set is not necessary. *3.2.4 Transistor and semiconductor complement. All transistors and semiconductors used in the construction of the teletypewriter set shall be reported to the contracting officer by completion and submission o Form DD-816. 3 Provided by IHSNot for ResaleNo re
18、production or networking permitted without license from IHS-,-,-2 NIL-T-23330A 5 9999906 0352053 7 I * MIL-T - 2 3 3 30A (MC) *3.3 Desian and construction. The teletypewriter set described herein is a man-transportable teletypewriter communications set complete, except for transmission media (such a
19、s wires or frequency-shift keying units) and primary power source. The equipment shall provide 72 characters- per-line page copy, with text consisting of the standard communications alpha-numeric-punctuation alphabet in accordance with MIL-STD-188. The equipment shall be capable of being modified to
20、 provide 76 characters per line when copy consists of standard weather text. supply shall be in the form of a self-contained roll, to and including 5 inches in diameter and 8-1/2 inches in width or 8-1/2-inch fan-fold paper when case, CY-2977A/UG, is used. The equipment shall provide for optional su
21、pply of signal line battery in the send and receive and send or receive circuits by shifting of pin jacks. shall be capable of being positioned in a send or stowage position, or removed completely, without the use of tools. All connections shall be made through a single service cable. Different cabl
22、es shall be used for alternating current (ac) and direct current (dc) applications. The teletypewriter set shall be capable of operating on 115 volts (V), 60 hertz (Hz), 1 phase ac or 115 V, 400 Hz, 1 phase ac, primary power sources with only a change of motor. Equipments shall operate on signal lin
23、es ranging in value from 1 milliampere (mA) to 5 mA and from 20 mA to 80 mA with no manipulations other than positioning a single strap. At least eight teletypewriter sets shall be capable of operating on the same signal line with only one teletypewriter set supplying the line battery for the loop.
24、The set shall transmit and receive 7.0 unit, five level, serial baudot code, and shall be capable of operation over radio or wire channels. The teletypewriter set shall be capable of operating in any of the following modes with only simple operator-made patches required to change from one mode to an
25、other; changes shall be accomplished in less than 1 minute: Paper up The keyboard (a) Simplex (Internal Battery) (b) Simplex (External Battery) (c) Duplex (Internal Battery in Send Line, External in Receive Line) 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license
26、from IHS-,-,-MIL-T-23330A 58 W 7777706 015205LI 7 W n MIL-T- 2 3 3 30A (MC) (d) Duplex (Internal Battery in Receive Line, External in Send Line) (e) Duplex (External Battery in both Send and Receive Lines) . Internal construction shall provide for flow of heating and cooling air. All major component
27、s shall be mounted on the chassis so as to permit quick removal for repair or replacement. Termination of signal lines at the equipment shall be by means of binding posts mounted on a junction box contained in the service cable. The service cable shall be connected to the teletypewriter set through
28、an access port in the rear. Equipment shall be constructed so that connection to an incorrect power source shall not result in damage to the equipment. Protection for incorrect power source connections may consist, in part, of proper fusing . “3.3.1 Cases. The teletypewriter set shall be mounted in
29、a rugged, watertight, transit case, CY-2976A/PGt Case, Teletypewriter (Tactical) or CY-2977A/UGt Case, Teletype- writer (Non-Tactical) as specified in the contract or order (see 6.2) . *3.3.1.1 Case, Tactical, CY-2976A/PG0 This case shall be designed to fasten together (front-half and rear half) to
30、form a watertight unit in accordance with MIL-STD-108. The rear half shall contain a chassis on individual roller slides, so that the chassis may be pulled out for replace- ment of paper rolls and ribbons, changing speed, and maintenance. Positive acting locks for the chassis slides shall be provide
31、d, which may be released, to permit slide extension, chassis removal and installation without the use of too1.s. Removal of all or part of the front cover to pull out the chassis is permissible, providing the front cover may be removed without the use of tools. The case shall be provided with approp
32、riate carrying handles mounted above the center of gravity. The case shall be constructed so that positioning of the keyboard and insertion of the service cables shall be all that is required to place the teletypewriter set in operation. The keyboard shall be capable of being positioned in a send or
33、 stowed position, or removed completely without the use of tools. One relief 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-valve shall be included in the watertight case. Stowage for one service cable, spare parts box, and spare ribbon shall be p
34、rovided in the top of the case. handle for carrying the case shall be mounted on the front cover. metal mounts which contain a threaded metal insert for insertion of mounting screws. A recessed The bottom of the case shall have four rubber and , MIL-T-23330A 5B 999990b 0152055 O *3.3.i. 2 Case, Non-
35、Tactical, CY-2977A/UG. This case is for use in offices, fixed communication centers, etc. The teletypewriter set shall fit into this case without modification. case in 3.3.1.1 except for the following: This case shall be the same as tactical Not be required to meet the watertight requirement A door
36、shall be provided 50 that the paper roll Removal of the front cover to guide the paper is No storage space shall be provided for the service (a) (b) may be inserted without removing the equipment from the case. (c) permissible. (d) cable or equipment spares. *3.3.2 Teleminter TT-297A/ UG. The telepr
37、inter shall provide 72 or 76 characters per line page copy, with text consisting of the 26 letters of the alphabet, the digits O through 9, and a group of the basic punctuation signs and other symbols. mechanical functions of spacing between words and characters, shifting for letters and figures, si
38、gnaled line feed and carriage return, automatic carriage return and line feed and signal bell. The teleprinter operating speed (baud rate) shall be changed as desired by changing the speed change gears. The printer shall provide all components necessary to convert the electrical signals received fro
39、m the line sensor to mechanical motion, position a printing mechanism, record a character (or perform a function) representative of the electrical signal received, at nominal speeds of 40 to 75 baud. The teleprinter shall be mounted 01 the chassis. the chassis using only a screwdriver. The overall d
40、imensions shall be approximately: of MIL-STD-108. It shall also be capable of performing It shall be possible to remove the unit from 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-T-23330A 58 7777706 0152056 2 MIL-T-23330A (MC) Length 9 inch
41、es Width 12-3/8 inches Height 3-3/4 inches The teleprinter shall contain the necessary electrical and mechanical circuits and linkages to perform the functions specified herein and shall include the following modular subassemblies: Front section . Rear section Main shaft, left half Main shaft, right
42、 half Motor Magnetic selector Ribbon feed assembly Paper feed assembly “3.3.2.1 Electrical connections. Three connectors shall be provided on the teleprinter for use with the magnetic selector motor connections, and time delay motor stop circuitry. “3.3.2.2 Mechanical linkaqe. The teleprinter shall
43、require no mechanical linkages from any other portion of the equipment, but shall be capable of supplying motive power for the keyboard through a printer-to-keyboard gear. Mating of this gear shall be entirely automatic, requiring only insertion of the keyboard into the chassis cavity. *3.3.2.3 Oper
44、ational features. The teleprinter shall have the following operational features. “3.3.2.3.1 Method of printinq. The teleprinter shall employ a type cylinder or similar device located behind the recording medium so that a neutral position or space is not required in order to render visible the last c
45、haracter printed. The type cylinder shall be separated from the inking facility by the recording medium. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-23330A 58 7777706 0352057 Li “3.3.2.3.2 Printinq capability. The printing mechanism shall
46、 have a printing capability of 64 characters, i.e., those comprising the standard communications alphabet. For standard equipments, however, printing shall be suppressed for the following characters: iiLTRSll, “FIGS“ “BLANK“ , “SPACE“ TARRIAGE RETURNII “LINE FEED“ and I BELL . Pica type, nominally 1
47、0 characters per inch. of selection (characters). The selector shall begin to position the type immediately upon receipt of the first intelligence pulse and shall complete that positioning and begin printing a character, immediately after receipt of the fifth intelligence pulse. “3.3.2.3.3 Type size
48、. Characters shall be printed in *3.3.2.3.4 Character storaqe. There shall be no storage “3.3.2.3.5 Line capacity. The teleprinter shall be capable of printing 72 characters per line with automatic carriage return and line feed at that point. It shall be possible for a trained technician to convert
49、the equipment from communications to weather use by changing the type cylinder, keyboard key-tops and increasing the line length to 76 characters in less than 1 hour. necessary for this change (or vice versa) shall be supplied as part of a conversion kit. made for 72 characters per line unless otherwise specified Any components Factory adjustment shall be (see 6.2). “3.3.2.3.6 On-line functions. The teleprinter shall the following on-line fu
