MIL-PRF-1/208G
TABLE I. Testing and inspection.
Inspection
Method
Conditions
Symbol
Limits
Limits
Unit
min
max
Conformance inspection,
part 1
Ez = 675 V dc; Iz = 200 µA dc
sec
5
---
t
4401
Ignitor ignition time
Iz = 100 µA dc
V dc
525
Eid
4406
Ignitor voltage drop
415
ĆQ
Ignitor interaction (ĆQ)
Iz = 200 µA dc (note 4)
dB
0.1
4421
---
---
---
4426
---
---
Tuning range
note 5
mW
25
4452
---
pf
Flat-leakage power
Test condition 1 (note 6)
mW
40
---
pf
---
---
4475
2,250
QO
Intrinsic Q (relative)
F = 3,000 MHz (note 7)
---
---
1027
---
---
Temperature cycling
note 1
Conformance inspection,
part 2
Degradation due to
4021
notes 8 and 9
---
---
---
---
vibration
Dielectric material strain
4101
note 10
---
---
---
---
Ignitor oscillation
4411
note 11
---
---
---
---
Periodic-check tests
ĆF
Temperature coefficient
4466
MHz
F = 3,160 MHz (note 2)
-10
0
of frequency (method A)
µs
Recovery time
4471
Test condition 2 (note 3)
5
---
t
Conformance inspection,
part 3
Group C; Iz = 200 µA dc
hr
---
Life-test provisions
---
t
500
Life-test end points
---
Ignitor interaction (ĆQ)
ĆQ
Iz = 200 µA dc (note 4)
dB
0.5
4421
---
µs
20
4471
---
Recovery time
t
Test condition 2 (note 3)
NOTES:
1. The tube shall be clamped in the "ARO" cavity, as shown on Drawing 143-JAN, and subjected to 10 of the
temperature cycles specified. Not less than 24 hours after the temperature test, the tube shall pass the
leakage power test. (See method 4452.)
2. This test shall be made with the tube mounted in a cavity as shown on Drawing 142-JAN.
3. Ignitor series resistance shall be 0.5 MΩ. The loss of signal in the tube, at the specified time after the start
of the transmitter pulse, shall not exceed the loss at 800 to 1,000 µs after the pulse, by more than 3 dB.
4.
With the ignitor current adjusted to the given value, the change in intrinsic Q, as measured in note 7 (second
test), shall be within the limits specified.
2
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