MIL-PRF-1/999C
TABLE I. Testing and inspection - Continued.
1/ Preproduction sample approval requirements hereby replace any qualifications requirements referable to the product covered
herein. The term "First article testing" shall be considered as synonymous with the term "Preproduction sample approval
testing." All tests applicable herein (including all preproduction sample approval and conformance inspection, parts 1, 2, and 3)
shall be performed during preproduction sample inspection. A failure of any one tube in any of the tests shall be cause for
decision of preproduction sample disapproval.
2/ The tube under test (TUT) shall be mounted in test mount A as detailed in figures 2 and 3.
3/ This test shall be performed at least 168 hours after pumping and at least 24 hours after any previous discharge.
4/ The shift in position of the voltage minimum, resulting from reversing the TUT in the test mount, shall be within the specified
limits when measured in an RG-51/U waveguide.
5/ This tube is designed for application in pairs mounted in the wide walls of RG-51/U waveguide.
6/ The TUT shall be mounted in test mount B as detailed in figure 4.
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