Downloaded from https://www.everyspec.com MIL-STD-1311D 2. Procedures. 2.1 1-tone power output measurement. 2-tone IM distortion measurement. a. The TUT shall be set to operate under the specified idling conditions. Ibo must be stable before proceeding with the remainder of the tests. b. The rf drive applied shall be single tone. c. The drive shall be set to the specified level, and a notation made of this level (in terms of egk or other appropriate terms.) d. Useful power output shall be read or held for the specified time and read. e. The rf drive shall be switched to two-tone, and set to the same peak envelope level as noted in 2.1(c). f.
The IM distortion products of the amplifier shall be read. 2.2 2-tone power output measurement. 2-tone IM distortion measurement. a. The TUT shall be set to operate under the specified idling conditions. Ibo must be stable before proceeding with the remainder of the test. b. The rf drive applied shall be two tone. c. The drive shall be set to the specified level. d. Useful peak envelope power (PEP) output shall be read or held for the specified time and read. If a power meter which measures average power, for example, a calorimeter or true rms voltmeter is used, PEP is equal to two times the average power output. e. The IM distortion products of the amplifier shall be read.
METHOD 2204B 2204-2 25 March 1970