1、 MIL-T04892( USAF ) 3.12 Wei ht.0 The total. weight of the test set shall not exceed *mds . 3.13 Identification of Product,- Equipment, assemblies and parta shall bearked for identifd. cation in accordance with Standard MIESTD-130. 4. QUALITY ASSURANCE PROVISIONS 4.1 General,- The sampling, inspecti
2、on and test procedure8 OP Specimn MIL-T-945 apply to this specification with the followlng additions or exceptions to Specification MIL-T-945 as identified by similarity of paragraph heading, cedures of Specification MIL-T-945 and thls specification con- f3ict, this specification shall govern. Where
3、pro- 4.1.1 the contract,. shall b e tested for design approval by the procuring agency; or when so specified In the contract, by the contractor at the contractors plant under the supervision of the procuring agency 4.1.2 preliminary part List to Lheprocuring agency 30 days prior to submission of the
4、 preproduction sample for test. liminary parts list shall contain a description of all standard and nonstandard parts to be used in the.production equipment. Preproduction Tests.: Three test sets, as specified in Preliminary Parts Usto- The contractor shall submit a The pre- 4.1.3 Vsual inspection.-
5、 A visual inspection of the test set shall be made to verify that materials, design, and construction, necessary mechanical measurements, marking, and workmanship comply wlth the requirements of thls specification, 4.1.4 Electrical Performance.- The preproduction test samples shall be tested to dete
6、rmine compliance with all the electrical performance requirements of this specification, e 4.1.5 determined by comparison with standards having an accuracy of at least plus or minus 2 percent. 4.1.6 Temperature InCluence Upon Accuracies,- The test set shall be checked for accuracy at temperatures of
7、 minus 2OoC and plus 55OC after the temperature Of the test set has stabilized. Call- bratlon errors shali not exceed the limits speclfied.hereln, Calibration Standards.- The test set accuracies shall be 4.1.7 Humidity.- The tes6 set, with combination case cover off,. shall be subjected to a humidit
8、y test, Procedure I, In accordance with Specification MiSE-5272 except that temperature shall not exceed 55%. Upon comple.t;ion of the hwnidlty test, the test set shall be turrred over to allow excess water to -S-4456, The test set shall be teoted and meet the performance requirements of this specif
9、icatlon, Shock.- The test set, in combination case with cover In 4,l,g Fun us Resistance Test,- The test set, removed from the combina + on case, with circuit elements exposed, shall be sub- jected to a fungus test, Procedure I, in accordance with Specifl- .cation MIL-E-5273, Any visible evidence of
10、 fungus growth will e .be cause for rejection. 4 . 2 Accepttrance Tests .- 4.2.1 electrical tests on the test set ahall be prepared by the con- tractor and submitted t the procuring activity for approval 30 days prior to fabrication of production equipments. Electrical Test Procedures.- The procedur
11、e for Individual 4.2.2 liidiviual Tests.- Each test set shall be visually Inspected and the electrical performance shall be deteminedln accordance with approved electrical test procedure under normal test conditions, defined as follows: Temperature - Room, Ambient 25OC plus 15OC or minus 5OC. Vibrat
12、ion - None Humidity - Room Ambient up to 90 percent relative humidlty. Power Source - i5 volbs 50 - 60 cps. , Altitude - Normal Ground, In addition, each test set shall be subject to,any other- test whtch the inspector considers necessary to determine compliance of the test set with the requirements
13、 of this specification. 4.2.3 . Sampling Tests.= Two *test .sets shall be selected at random from each quanti$y of 100 test sets which have passed . individual tests and subjected to the sampling tests: 4.2.3.1 When sampling tests are specified on a number of Items *that are selected from a producti
14、on run, and one or more of this number fails to meet the specified tests(s), acceptance of all Items still on hand andsubsequently produced shall be withheld until Lhe ex%ent and cause of failure.3.s determined. operational reasons, individual tests may be conbinued pending investigation of a sampli
15、ng failure, However, final acceptance of the items on hand and subsequently produced is contingent . .upon the inspeotorls decision regarding the overall conformance For Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-9872 66 = 737770b 0124607
16、3 1. 4 _. . MIGT-4892 (Um ) of the product to specification requirements . action has been accomplished, all necessary tests shall be repeated. in items previously accepted, full particulars concerning the defect(s) found, including recommendations for correction, will be Purnished to the procurng a
17、gency. 4.2.3.2 The sampling tests shall be as follows: When comective If investigation indicates that the defects may exist Visual Ihspection - As specified herein. Humidity Test - As specified herein except that the total tirile of test shall be 240 hours (10 cycles), , Shock %st - As specifled her
18、ein. Vibration Test - As specified herein. Enclosure Test - In accordance with Specification MIET-945, Electrical Test - As specified herein. 4.3 All papts, speclmens, assemblies and drawings submitted for tests required by this specification to determine compliance with the specification and drawin
19、gs shall be in addition to the quantity specified in the contract or purchase order and shall be furnished without increasing the cost of the contract. . . 5. PREPARATION FOR DELrVERY s. .- Preparation for delivery shall be In accordance with 5ei - Spec calion M,-. . .:-. :-.: :. . ._._ i.-.-: . ,:
20、:- *:-.-._ 1: . ,-1; -.- 2-L :.LA - -1 - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-T-4872 bb 7797706 OL24bLO 5 -. . -_ ._I- - , . _. -. 1 NOTICE: When CIoverriment drawings, npecifleat50ns, or other data are used For any purpose other than
21、 in,connection with definitely related ovement procUrement operation, the United States overnmen$ thereby, incurs no responsibility nor any . obligation whatsoever; and the fact that the ovemnent may have formulated, Airnished, or in any way supplied the said . drawings, specification, or other data
22、, is not to be regarded by Implication or otherwise as in hy mamer licensing the holder or any other personor corporation, or conveying any right8 or permission to manufacture, use, or sell anypatented invention that may in any way be related thereto. . . a. , . .- r. . . -. . *. ., c Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
