MIL-PRF-1/1712D
TABLE I. Testing and inspection - Continued.
21/
The VSW R and frequency at both input and output shall be measured and recorded at the point of maximum VSW R in the
frequency band. The tube shall operate with an input/output impedance of 50 ohms.
22/
The cathode voltage shall be varied within the values specified. The Ćθ/Ćek measurement is the difference between the phase
shifts through the tube at the two cathode voltage extremes divided by the change in voltage.
23/
The end of life point shall be defined as that point in time when the power output is reduced to less than 3.6 kw peak anywhere
between 2.9 and 3.1 GHz with the tube operated at the recommended cathode voltage, working into a matched load (50 ohms)
having a VSW R of 1.1:1 or less, and driven with a fixed input power of 0.7 watt maximum.
24/
This specification sheet uses accept on zero defect sampling plan in accordance with MIL-PRF-1, table III.
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