MIL-STD-81OD Downloaded from https://www.everyspec.com 19 July,1983 Step 2. Document the results. Step’3. Where applicable, install the test item in its test fixture..,-. Step 4.. test plan. 0 Conduct an operational checkout in,accordance with the approved ,. Step 5. Document the,results for compliance.with GerieralRequirements. If the test first te~t as required by at Step 1. steD 6. item operates satisfactorily, 11.2.la. If not, resolve the proceed to the problem and restart . 11-3 MXEWBES - >11-3.1. t. nal Step 1. Following the guidance of paragraph I-3.3c, select test : conditions end calibrate the shock apparatus as follows: a.
Select accelerometers and analysis techniques which meet the criteria “outlinedin 11-1.1.3. b. Mount the calibration load (the actual test item, a rejected item, or a rigid dummy mass) to the test apparatus in a manner eimilar to that of the actual test item. If the test item is normally mounted on vibration isolators, the isolators shall be functional during the teat. c. Perform calibration shccks until two consecutive shock applica- tion to the calibration load produce waveforma which meet or exceed test con- 0 ditiona derived from paragraph I-3.3, for at least one direction of one axis. d. Remove the calibrating load and install the”actual test item On the shock apparatus. Step 2.
Perform a functional check on the test item. Step 3. Subject the test item (in’its operational mode) to the test transient. Step 4. Record necessary data to show that the transients met or exceeded desired test levels. This includes test setup photos, test logs, and photos of actual shock transients. For shock/vibration isolated assemblies within the test item, measurements and/or inspections should be made assemblies did not impact with adjacent.assemblies. to assure these’, ‘‘ -.. Step 5. Perform functional check on the.test item. data. Record performance ~m, ,, Step 6.
‘Repeatsteps 3, 4, 5, and 6 three times for each orthogonal axis that is to be tested in both the poeitive’and negative directions. (If negative and positive acceleration spectra of one transient meet or exceed desired test levels for an axis, they can be counted as two tranaients, one in each direction.) Step 7. Dceument the test. .,..,,,:. METHOD 516.3: 19 July 1983 516’.3-20