Downloaded from https://www.everyspec.com MIL-STD-1311D METHOD 1026 TEMPERATURE RANGE, OPERATING 1. Purpose. To establish the ability of the tube to start up and operate after stabilization at specified temperatures. 2. Equipment. The chamber to be used for this test shall be capable of maintaining the required ambient temperatures (and fluid cooling temperatures separately when and as required) while the tube is operating. 3. Procedure. With the chamber or fluid temperature maintained and following the warm-up period, the tube shall then operate. METHOD 1026 1026-1 19 April 1968