1、/- UIL-T-13LIbO 58 797990b 0149751 5 M I . . . . 4- June MILITARY SPECIFICATION TELEPHONE SET TA-263( )/PT 1. SCGPE 1954 1. i This specification covers a Telephone Set TA-263( )/PT, a portable telephone arranged to prevent iriterference between the telephone and the carrier channels when used by lin
2、emen on open wire carrier lines. The equipment con- sists of a filter assembly attached to Telephone Set TA-43( )/PT ; two whistles, one of 1000 cycles per second (c. p. s. ) interrupted at the rate of 20 c. p. s. , the other of 1600 c. p. s. ; and a carrying case, The filter assembly includes a low
3、- pass filter, two resistors: an impedance switch: and four binding posts. whistles provide voice-frequency signalling over carrier lii-e s from the telephone to the carrier terminals or repeaters, The 2. APPLICABLE DOCUMENTS 2.1 The following specifications, standards, and drawings of the issue in
4、effect on date of invitation for bids, form a part of this specification. SPECIFICATIONS FEDERAL EN- B- 59 1 NN- B- 62 1 QQ-S-571 UU- T- 11 1 LLL-B-631 PPP-B-601 MILITARY JAN-P-106 JAN-P-108 MIL- P- i i 6. JAN-P- 117 JA N- P - 12 i MIL-B-131 Boxes, Fiberboard: Wood-Cleated (For Boxes; Wood, Nailed a
5、nd Lock-Corner Solder; Soft (Tin, Tin-Lead, aiid Lead- Tape; Paper, Gummed (Sealing and Boxes: Fiber, Corrugated (For Domestic Bc.xes; Wood, Cleated-Plywood Domestic Shipment) Silver). Securing). Shipment). Packaging and Packing For Overseas Packaging and Packing for Overseas Shipment-Boxes, Wood, N
6、ailed. Shipment-Boxes , Fiberboard (V-Board and W-Board), Exterior and Interior. Preservation, Methods of. Packaging and Packing for Overseas Shipinent- Bags , Interior Packaging. Packaging and Packing for Overseas Ship- ment : Tape, A dhesive , Pressure- Sens i- tive, Water -Resistant. Flexible. Ba
7、rrier-Material; Water Vapcrpoof , _ . . . ._. -. . , -. . . . . . . . . :. . . . . - . . . . . . . . . . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-T-13460 58 H 7779706 0347752 7 H U. S. ARMY 6- 9 19- 10 STANDARDS MILITARY MIL-STD- 105 MIL-
8、S TD- 12 9 DRAWINGS Cloth, Sateen, %ply, Rubberized Filler, Interior Packing, Fiberboard, Corrugated, Single and Double Faced, for General Packing Purposes. Sampling Procedures and Table for Marking for Shipment and Storage. Inspection by Attributes. SIGNAL CORPS SC-D- 15914 Moisture Resistance Test
9、 Cycle for SC-D- 19999 Standard Estreine- Temperature Cycle. SC-DL- 140011 Whistle Assembly 1000/20 c. p. a. SC-DL-14 0024 Whistle Assembly 1600 c. p. a. SC-DL-140761 Tcleplione Set TA-263( )/PT. Grouiid Signal Equipment. (Copies 01 specifications: standards: and drawings required by contractors in
10、coiiiicctioii rith specific pociircniciit liinctioiis should be obtained froin or as dirccLcc1 by the contracting olicer. syiiil)ol sliould lx stipulnled wlicn rcyucstiiig copies. ) Both tlic title and ideiitiyiiig number or ?. 1 Coiistructioii. - 3. 1 Tclcplioiic Sel rL-2W( )/PT. - clcphoiic Set TA
11、-BCi3( j LT (exclusive o carryiiig c;isc) slid1 Ix coiislriiclcd iii :iccordaiice .iLh Drawings SC-DL- 140761: SC-DL-140011, :LIICI SC-DI,-140024. 3. i. 2 C;Li-rviiig case. - Construction o tlic carrying cxsc sliall conoin to LI1 ct 1, IUCLl r ci11 en t 111 odc I, . . . . . . . . . .- I.-.- sliall b
12、e coiiiposi- . . . . - . . - _ - . . , . , . . I . ;(;,.: t. . . ;- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL- T- 1346(SigC) 3.2.2 Flux and cleaning agents. - No acid or acid salts shall be used in preparation for or during soldering; howev
13、er , exception is permitted for pre- liminary tinning of electrical connections and for tinning or soldering of mechani- cal joints 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 sa
14、lts are used, as permitted above, they shall be. completely neutralized and removed immediately after use. Flux for soldering of electrical connections shall be rosin, rosin and alcohol, or rosin and turpentine. 3.2.3 Process. - There shall be no sharp points or rough surfaces resulting The solder s
15、hall feather out to a thin edge, indicating from insufficient heating. proper flowing and wetting action, and shall not be crystallized, overheated, or underheated. for electrical connections, The soldering shall be so accomplished that no rosin remains on the joint or in the proximity of the joint.
16、 Any means employed to re- move an unavoidable excess of flux shall not incur the risk of loose particles o flux, brush bristles, or other foreign material remaining in the equipment; flux being spread over a larger area; or damage to the equipment. terial that thas been subjected to heating during
17、the soldering operation shall be undamaged and parts fastened thereto shall not have become loosened. The minimum necessary amount of flux and solder shall be used Insulation ma- 3. 3 Cleaning. - Metal parts, after fabrication, shall be cleaned in accor- dance with good commercial practice, or as sp
18、ecified in an applicable document. Cleaning processes shall have no deleterious effect on the equipment. Corrosive material shall be removed completely before parts are assembled into the equip- ment. After assembly, components shall be cleaned thoroughly and shall be free from particles of solder,
19、flux, and other foreign material. cleaning shall also be performed before final assembly of components. If necessary, such 3.4 Electrical characteristics, - 3.4.1 Grounding. - Although the filter configuration given in the specifica- tion is an unbalanced structure it will be used on balanced circui
20、ts, therefore, none of its terminals shall be connected to equipment grounds or earth grounds, during tests or normal operation. 3.4.2 Insertion loss. With the impedance switch on “low“ and at or for a corrected ambient temperature of 70“ F, the filter shall have the following insertion loss. Freque
21、ncy Insertion loss (C.P. s. ) (db) 200 Not less than 5. 5 500 to 1600 Not to exceed 1.7 1800 Greater than 10. O 2000 Greater than 28. 5 2160 to 6000 Greater than 46. O 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.4.3 Impedance. -With the filte
22、r terminated in Telephone Set, TA-43( )/PT with the handset off the hook, and with the impedance switch on “low“ position: the filter shall have the following impedance, Frequency (c. p, s. ) Impedance (ohms) 200 Greater than 2900 300 Greater than 1500 1600 Greater than 500 1800 Not greater than 100
23、 3000 Greater than 1100 6000 Greater than 3100 3.5 Whistles. - Two whistles are required for voice frequency sipdling. One whistle shall be 1000 -I- 100 c. p. s. interrupted at the rate of 20 I 3 c. p. s. The secoiid whistle shall be 1600 L 75 c, p. s. uninterrupted, With the test set-up shown in Fi
24、gure 1 and Figure 2 orthis specification, each whistle shall operate its respective ringing equipment when blown by mouth into the transmitter OC the local telephone, Telephone Set TA-43/PT. 3. 6 Carrying case, - 3. O. 1 Cloth, sateen, 2-ply, rubberized. - The rubberized 2-ply sateeri shall conform
25、to Specification 6-9. 3. 6.2 Color. - The sateen shall be vat-dyed to match the approved shade of Olive Drab No. 7. (See 6. 4. ) 3.7 Preproduction samples. - 3.7,l Quantities. - After award o contract two complete Telephone Sets TA-263( )/PT and six filter can asseinblies shall be furnished for prep
26、roduction inspection and approval. (See 6. 3.2). 3.7.2 Compliance with specified requirements. - 3.7.2.1 Preproduction samples shall meet specified requirements, shall be made and assembled by tools and methods that will be used for quantity production and shall be accompanied by a statement to that
27、 effect. 3.7,2.2 Approval of preproduction samples shall not be constued as a waiver of any specified requirement. After being released to the contractor (See 3.7. 5) preproduction samples to be offered as units on contract shall be refabricated by the contractor if necessary to meet specified requi
28、rements. ,=- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-kl O pi E I4 ? cn E cn w E w V x Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T- 1346O(SigC) 3.7.2.2, When deviation from 3.7.2.1 is
29、 unavoidable, the preproduction samples may be submitted for approval provided that the accompanying statement describes in detail each nonconforming feature, reason therefor, and manner in which it will be corrected in production of equipment on contract. 3.7.3 Test data. - The preproduction sample
30、s shall be accompanied by test data showing compliance with specified performance, The test data shall comprise an engineering report giving test procedure, observations and other data, calculations, test results and essential details of the testing equipment (manufacturers model serial number, date
31、 of calibration, and the like). 3.7.4 Preproduction inspection. - Preproduction samples may be subjected by the Government to the group A inspection specified in Table II and to the pre- production inspection specified in Table I. Unlisted nondestructive inspection on preproduction samples may be pe
32、rformed to determine compliance with speci- fied requirements. Preproduction inspection will normally be performed in this order: (1) vibration, (2) bounce, (3) shock, drop; other preproduction inspection may precede, follow, or be interspersed between the foregoing. Table I. - Preproduction inspect
33、ion Inspection Rqt. Test (For additional preproduction inspection see 3.7.4) Par. Par, Temperature Moisture Resistance 3. 8 4. 6 3. 8 4.7 Immersion Vibration Bounce Shock; drop 3. 8.2 4. a 3. 9.1 4.9 3. 9.2 4.10 3. 9. 3 4.11 3,7.5 Reference standards. - After preproduction samples have been approved
34、 and returned to the contractors plant, they shall be kept intact in cus- tody of the Government inspector until released by him. reference standards to resolve any differences of opinion regarding interpre- tation of requirements. They shall be used as 3, 8 Service conditions. -The equipment shall
35、ineet the following service conditions: 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.- - MIL- T-l346O(SigC) 3, 8,l Equipment operating. - The equipment shall meet the requirements of this specification under any probable combination of the foll
36、owing: (a) Temperature. - Any ambient temperature in the range of -40“ F to . 131F. (b) Relative humidity. - Any relative humidity up to 95 percent, 3. 8.2 Equipment nonoperating. - The equipment shall meet the require- ments of 3, 8.1 after subjection to any one or more of the following nonoperatin
37、g conditions. (a) Temperature. -Continuous exposure for 72 hours at 160“ F and 72 hours at -80“F, at any orientation. (b) Relative humidity. - Relative humidity up to 100 percent, including condensation caused by temperature changes. (c) Immersion. - See. 4. 8. (d) Vibration. bounce, and drop, - See
38、 3. 9. 3.9 Vibration, bounce, and shock. - 3.9.1 Vilration. - Except for internal resonance of specified parts and subassemblies, the equipment shall have no mechanical resonance below 55 cycles per second. 3.9.2 Bounce. - The equipment shall meet full specification performance and show no physical
39、damage except surface abrasion when subjected to the test of 4. 10. 3.9.3 Shock, drop. - The equipment shall be operable after subjection to the test of 4.11. Minor mechanical damage is permissible. 3.10 Marking. - Marking shall conform to Bpecification MIL-M-13231. 3,lO. 1 Serial numbers. - Serial
40、numbers under Specification MIL-M-13231 are not required. 3.11 Technical literature. - Technical literature shall be furnished as specified by the contract. 3.12 Workmanship. - Components, subassemblies, and parts shall be manu- factured and assembled in a thoroughly workmanlike manner. 4. QUALITY A
41、SSURANCE PROVISIONS 4.1 Inspection, general. - Government inspection shall consist of group A inspection as specified in 4. 1.1. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T- 1346O(SigC) 4.1.1 Group A inspection, - Group A inspection shall
42、 be in accordance with Table II and Standard MIL-STD-105. any order which is satisfactory to the Government inspector, Group A inspection shall be performed in Table II - Government group A inspection Inspection Req. Test AQL Par. Par, Major Minor Visual and mechanical 4.2 1.5 dphu 6.5 dphu Insertio
43、n loss 3, 4. 2 4. 3 ) 1.5 dphu * Impedance 3, 4. 3 4. 4 ) for the Whistles 3.5 ) group * All electrical defects are oonsidered major. 4.1.2 Disposition of nonconforming product, - When defective sample units or rejected lots are resubmitted for acceptance, such items shall be suitably tagged or iden
44、tified by equivalent means to indicate the cause of failure and means employed to correct the fault, when the items are resubmitted and shall become the property of the Government. The record shall be presented to the Government 4.2 Visual and mechanical inspection. - Parts and equipment shall be in
45、spec- ted for worlunanship, mechanical fit, loose nuts and screws, application of speci- fied tropicalization treatments, and miscellaneous defects, Controls and fasten- ing devices shall be inspected or mechanical operation. Wiring, eoldered connec- tions , ground connections , welds , finishes, et
46、c. shall be inspected for workman- ship. Examination also may be made for other visual or mechanical defects, similar to those described above, that are contrary to specified requirements for the equipment, Visual and mechanical defects shall be classified by the Government inspector as major or min
47、or in accordance with the definitions of Standard Clearances , dimensions , and mechanical adjustments shall be measured. MIL-STD-105, 4.3 Insertion loss. - The insertion loss of the filter shall be measured by means of an audio oscillator, General Radio Type 713-By or equal, capable of being adjust
48、ed at will within the band up to 6000 c. p. s. to an accuracy off 2 c. p. s. voltage E delivering a balanced output through an internal resistance of 600 ohms - 10 ohms. A General Radio Wave Analyzer 736-A, or equal, arranged as a balanced voltmet er shall be used as a sensitive measuring device ter
49、minated by a 600 ohm + 10 olm resistor. The insertion loss of the filter shall then be measured as shown in Figure 3. The values of the insertion loss shall meet the requirements of paragraph 3.4.2. The oscillator shall be arranged to represent an ideal generator of The test tone input level to the filter shall be O dbm. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted
