1、MIL-T-176LI2 66 7777706 0127477 5 t- .- e MILITARY SPECIFICATION TEST SET, CRYSTAL TS-752/ASW1 MANUFACTURING SPECIFIC AT ION 1. SCOPE. le1 manufacture of the Crystal Test Set. be used for testing, tuning, and setting the crystal currents of radar receiving equipment. 2. 2*1 draarings, and publicatio
2、ns of the issue in effect on date of invitation for bids, form a part of this speCification: Scopeo- This specification covers the requirements for the The Crystal Test Set is intended to APPLICABLE; SPECIFICATIONS, STANDARDS, DMWINGS, ANI) PIJBLICATIONS Applicable sections of the following specific
3、ations, standards, SPECIFICATIONS MILITARY JAN-P-116 Packaging and Packing for Overseas Shipment Preservation, Methods of NAVY DEPARTME“ - BTIJREhU OF ORDNANCE OP 400 General Specifications for the Manufacture and Inspection of Ordnance Material for the !Jnited States Navy. STANDARDS MIIrSTD-129 . M
4、arking of Shipmentsr DRAWINGS NAVY DEPAETXNT - BURUIJ OF ORDNANCE Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-17642 (Nord) , LD NO. 276306 Crystal Test Set list of drawings (and all drawings and specifications listed thereon) nstr. for IJsi
5、ng System Simulat- ing Equipment for Testing AN/ ASB-1 Radar Components . NAVORD OD 7714 (Copies of specifications, standards, and drawings required by contractors in connection with specific procurement functions should be obtained from the procuring agency or as directed by the contracting officer
6、+) . 2*2 in effect on date of invitation for bids, unless otherwise stated, form a part of this specification: Other Pqblications .- The following publications, of the issue NATIONAL BTJREAU OF STANDARDS PUBLICATION Handbook H28 C* Screw-Thread Standards for Federal Services (Copies of Handbook H28
7、may be obtained upon application, accompanied by money order, coupon, or cash to the Superintendant of Documents, Government Printing Off ice, Washington 25, D.C .) 3b - REJIREMENTS. 3 al Product ion. 3.101 on JD NO. 276306, the Crystal Test Set list of drawings. 3.1a2 within one per cent of full sc
8、ale length of the center of the zero mark. 3.1.3 Each unit shail meet all the requirements of the drawings listed The initial zero setting of each meter in each unit shall be Each unit shall successfully pass all the tests of 4.1.3, 31*.4 Each unit, including all parts and accessories, shall be man-
9、 ufactured and finished in a thoroughly workmanlike manner. attention shall be paid to neatness and thoroughness of soldering, wiring, Particular Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-7 MIL-T-37642 bb 9 97777Ob 0327499 9 9 marking of parts
10、and assemblies, plating, painting, riveting, machine- screw assemblage, welding, and freedom of parts from burrs and sharp edges. 3.2 paragraph shall pertain ta each of the three meters of the unit. shall be the difference between the readings taken before and the readings talcen at the conclusion o
11、f the particular testb obtained in accordance with 4.1.3, 3.2.1 first be tested to assure compliance with the production requirements Environmentalo- The permanent errors specified in this The error These readings shall be Each unit to be subjected to the environmental tests shall Of 3010 3.202 are
12、those to which the unit shall be subjected while inoperative: The following conditions and any possible combination thereo? a, General.- The unit shall be so constructed that no fixed part or .assembly shall become loose and no moving or movable part or assembly shall become undesirably free or siug
13、gish in operation after subjection to the conditions Temperature,- Ranging from -55 C.(-67 F.) to +85O C. F.) as specified in 4.2.3.2a and 4.2*3.2bo permanent error after exposure shall not exceed three per cent. Hdditymu Ranging up to 95 per cent relative as speci- fied4.2.342c and 4.2.3.2do the hu
14、midity test shall not exceed two per cent. of 30202b and 3.2.2o bo The co The permanent error after The following conditions are those to which the unit shall be 3.203 subjected while inoperativet a. General.- The unit shall be so constructed that no fixed part Shall become loose and no moving part
15、*or control shall be shifted in position or adjustment rifter subjection. to the conditions of 3.2.3b. bo Vibration,- As specified in 4,2.3.3. The permanent error after the vibration tests shall not exceed two per cent, 3.2*4 of 3,2.2 and j02.3, the zero setting of the meters shall be within three p
16、er cent of full scale length of the center of the zero mark. After the unit is tested to see that it meets the requirements 3 4. SAWLING, INSPECTION, AND TEST PROCEDURES o 4el Production / 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by
17、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4e2e1.1 - Lot.- A lot shall consist of all the units manufactuFed by one process and under one contracto ka2 a1 a2 When a lot consists of one hundred units or less, one of these units shall be tested to determine
18、compliance with the requirements of 3.2. When a lot consists of more than one hundred units, two of these units shall be so testedr 442.2 with the inspection items of 3*2,2a and 3.2,3a after the tests of 4,2.3, inspection shall be conducted in accordance with OP 400. Inspection.-. Units shall be exa
19、nind to determine compliance . 402r3 i Test Procedureo L*203.1 Le20342 according to the following procedure e checked by placing 8 therzocouple in good thermal contact with the largest internal mass, centrally located, The unit shall be tested according to 4*lq3. The unit shall be placed within the
20、test chamber and tested Temperature stabilization shall be ao Temperature.- The following procedure shall be performed three times with the unit inoperative and with the lid clos e d: (1) Lower the tempera.ture to -55 C,(-67 F.), Maintain the unit at this temperature for two hours after s t abilizat
21、ion, Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-T-37bq2 66 9 7777906 0327503 7 7 (3) Application of the vibration specified in (1) and (2). ab
22、ove shall be in each of the following directions: (a) Horizontally; parallel to %he major horizontal axis of the unit, for a period of 15 minutes for each frequency rsnge. (b) Horizontally; at right angles to the major horizontal axis, for a period of 15 minutes for each frequency range (c) Vertical
23、ly; for a period of 15 minutes for each frequency range. . bo The unit shall be inspected 2nd tested to see that it meets the req-uirements of 3.203a, 3.2.3b and, 3.2.4. 5. PREPAF and the fact that the Government may hme formulated, furnished, or in any way supplied the said drawings, specifications
24、,. or other data, is not to be reg8rded by implication or otherwise as in any manner licensing the holder or any other person or corporation, or conveying any rights or permission to manufacture, use, or sell any patented invention that may in any way be related theretoo 7 . . .- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3v 0-2 +i PERCENT D.C. TEST STANDARD MILLIAMMETER Figure 1 -Test Setup Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
