Downloaded from https://www.everyspec.com MIL-STD-810C NOTE: The test item may be readjusted or realigned, as necessary,.tO meet specificationrequirements. No further realignment or readjustment shall be permitted throughout the test period, other than with accessible controls employed for operation of the test item. No repair or replacement of parts shall be permitted. Equipment shall be operated only when specified test measurements are being performed. Step 5 - Raise the internal chamber temperature to 30”C (86”F) and the relative humidity to 94 *4 percent. Step 6 - Subject the test item to five continuous 48-hour cycles in accordance with figure 507.1-2.
Take measurements in accord- ance with General Requirements, 3.2.3 at the periods shown on figure 507.1-2, unless otherwise specified in the equipment specification. Prior to measurements, accumulatedmoisture may be removed by turning the lest item upside dOwn Or shaking. Wiping is not permitted. (Certain operating procedures require an effective preconditioningof the test item environmentprior to operation.. When this occurs, the period of measurement shall be kept as short as possible.),. Step 7 - After completion of step 6 cycling,’condition the test item for 24 hours at 23° C (73° F) and 50 *1O percent relative humidity.
Step 8 - Operate the test item,,adjusting for optimum performance only as permitted in step 4 note, and compare with data obtained in step 4. Step 9 - Inspect the test item “inaccordance with General Requirements, 312.4 within an hour. 3.3 than Procedure II1. Ground and airborne sealed electronic equipm~nt (other hermetic sealed). Step 1 - “Preparethe test item in accordance with General Requirements, 3.2. Step 2 - Dry the test item at 54° C (129”F) for 24 hours. Step 3 - Condition the test item at 23”C (73”F).and 50 *1O percent relative humidity for 24 hours. Step 4 - Take initial measurements in accordance with General Require- ments, 3.2.1. NOTE:
The.test item may b’erealigned or readjusted,asnecessaryto meet speci- fication requirements. No further realignment or readjustment shall be 507.1-3 METHOD 507.1’