I Downloaded from https://www.everyspec.com MIL-STD-81OD 19 July 1983 with data obtained before, during, and after the environmental test(s). The identification and environmental test history of the SPeCifiO test item(s) should be documented for failure analysis purposes. 4.5.1.1 Jre-test recocd.. The pre-teat record shall include (as applicable): a. The functional parameters to be monitored during and after the test.if not specified in the equipment specification or requirements document. This shall include acceptable functional limits (with permissible degradation) when operation of the test item is required. b. Additional evaluation criteria (in addition to 4.5.7).
4.5.2 Inata nation of test item in test facilitv. Unless otherwise specified, the test item shall be installed in the test facility in a manner that will simulate service usage, with connections made necessary. and instrumentation attached as & not used in operation, but used in a. Plugs, covers, and inspection plates servicing, shall remain in place. in service but not in test shall dummv cables with DrOtf3Cted be terminations. Such mechanical connections shall aiso be protected. b. Electrical connections normally used provided with electrical connectors having c.
For tests where temperature values are controlled, the test chamber shall be at standard ambient conditions when the test item is installed or as specified in the individual methods. d. The test item shall be operated according to the applicable technical order or technical manual, when available, to determine that no malfunction or damage has resulted from faulty installation or handling. The requirement to operate the test item after its installation in the test facility applies only when the item is required to operate during the test. e. Test items shall be positioned at least 15 cm (6 inches) from each other or from walls, floors, ceilings, etc. to allow for adequate circulation. f.
If the item to be tested consists of several separate units, these units may be tested separately provided the functional aspecta are maintained as defined in the requirements document. 4.5.3 Performance che~mu test. When operation of the test item is required during the test exposure, suitable tests shall be performed to G determine whether the test exposure ia producing changes in performance when compared with pretest data. 4.5.4 Dted tests. Unless otherwise specified in the individual , methods, the following procedures shall be followed when a test is interrupted. Any deviation from this guidance shall be explained in the test report. 4.5.4.1 In-tolerance interruDti~.
Interruptions during which the prescribed test tolerances are not exceeded shall be considered as part of the total test duration. (No allowance is necessary if exposure to the proper test levels was o maintained.) >- 12