MIL-PRF-1/982D
TABLE I. Requirements or tests - Continued.
Limits
MIL-STD-1311
Symbol
Requirement or test
Unit
Test
Conditions
method
Min
Max
Conformance inspection
part 2 - Continued.
Power output (3)
4250
7
Po
3.0
---
mW
ĆF
Electronic tuning range
4280
3, 5
28
---
MHz
Er max Po; see note 5
(3)
50%
Conformance inspection,
part 3
Life-test provisions
---
2
Group B
t
500
---
hrs
Life-test end point:
---
Power output (1)
4250
3, 4, 5
Po
10
---
mW
Reflector voltage (1)
4213
3
Er
-85
-135
V dc
NOTES:
1. The mechanical tuning shall be set for F = 9,370 MHz ± 0.3 percent and sufficient 60 Hz ac voltage
superimposed on the direct reflector voltage to suppress oscillation on the ends of the sweep. The crystal
current as a function of reflector voltage shall be observed with an amplifier and an oscilloscope having a
minimum pass band of 0.1 MHz. With the standing-wave introducer in accordance with Drawing 227-JAN,
inserted in the guide, there shall be no discontinuity at the maximum power points for any phase of standing
wave, when the magnitude of the standing wave is specified.
2. The tube shall be fixed firmly in a suitable socket by clamps in accordance with Drawing 227-JAN. The
measurements on the tube in an oscillating state shall be made with the output line coupled into measuring
circuits in accordance with Drawing 227-JAN.
3. The power output shall be above the limit specified throughout the specified frequency range.
4. Reflector voltage shall be adjusted to the value within the specified limits which is necessary to obtain maximum
power output.
5. The tube shall meet the requirements of this test over the operating band, however, the test needs to be
conducted only at the designated frequency or frequencies.
6. This test to be performed at the conclusion of the holding period.
3
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