Downloaded from https://www.everyspec.com MIL-STD-810D 19 July 1983 II-3.5 If calibration of “the test apparatus is required, perPorm steps 1 end 2 of paragraph 11-3.1 first. NOTE: Step 1. Secure the test item mount to the shock apparatus by its normal mounting meana. The test item shall be a representative equipment item or a mechanical1y equivalent mockup. If a mockup is used, it will represent the same hazard potential, masa, center of mass, and mass moments about.the. attachment points as the item simulated. . Step 2. Perform two shocks in each direction (as determined in paragraph I-3.7c) along three orthogonal axes of the test item for a maximum total of 12 shocks. Step 3.
Perform a physical inspection of the test setup. Operation of the test item is not required. Step 4. . Document the results of the physical inspection including an assessment of potential hazards created by equipment breakage or deformation. II-3.6 frOcedure VI - ~ . Step 1. Configure.the item as it would be for servicing -‘for example,’ with the chassis and front panel assembly removed from its enclosure. Position the item as it would be for servicing. Step 2. Using one edge as a pivot, lift the opposite edge of the chassis until one of the following conditions occur (whichever occurs first). a. The chassis forms an angle of 45° with the horizontal bench top. b.
The lifted edge of the chassis has been raised four inches above the horizontal bench top. ! c. The lifted edge of the chassis is just below the point of perfect balance. Let the chassis drop back freely to the horizontal bench top. Repeat, using other practical edges of the same horizontal face as pivot points, for a total of four drops. Step 3. Repeat step 2 with the test item resting on other faces until it has been dropped for a total of four times on each face which the test item could be placed practically during servicing. The test item shall not be operating. Step 4. Visuaily inspect the test item. Step 5.
Document the results for comparison with data obtained in paragraph II-2.2, step 2. Step 6. Operate the test.item in accordance with the approved test plan. METSOD 516.3 19 July 1983 516.3-23