I Downloaded from https://www.everyspec.com MIL-STD-81OD 19 July 1983 Step 5. Expose the test item to the temperature (and humidity, if applicable) levels specified for the operational cycle for”at least three cycles, or as necessary to obtain repeated teat item response (22° C); A maximum of aeven cycles is suggested if repeated response is difficult obtain. Step 6. From the exposure data, determine the maximum critical- component temperature or response temperature of the test item. This will be the operational temperature for Step 7. I Step 7. ~tant temperature exn~. With the test item in the”chamber in the operational configuration, adjuat the chamber air temperature to the ..
operational temperature and, if required, adjust the humidity to the appropriate level of the cycle. Maintain the chamber in a steady-state condition until temperature stabilization of the test item has been achieved (General Requirements, 4.4.3). Step 8. Conduct as complete a visual examination.of the test item as possible considering chamber access limitations. . step 10. Operate the test item until temperature stabilization of the test item haa been achieved. Conduct an operational checkout of the test item in accordance with the approved test plan and document the results. Step 9. Document the results. ., step 12. ~.
With the test item in the chamber in its operational configuration, adjust the chamber air temperature (and humidity, if applicable) to the initial conditions of the operational cycle appropriate for the test item deployment. Step 11. Proceed to Step 15. Step 13. Expose the test item to at least three cycles or the number of cycles necessary to assure repeated test item response. Conduct as complete a visual examination of the test item as possible considering chamber access limitations. Document the results. Step 14.
Operate the test item during the maximum response period of the exposure cycle.~/ Repeat until a complete operational checkout’of the test item has been accomplished in accordance with the approved test plan and the results have been documented. . l./ The maximum response period may not coincid: with the maximum temperature cycle conditions because of thermal lag of the test item. - MSTHOD 501.2 19 July 1983 501.2-16 I