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|  MIL-E-1/175J
TABLE I. Testing and inspection - Continued.
MIL-STD-1311
Requirement or test
Conditions
Symbol
Units
Limits
Test method
Min
Max
Conformance inspection,
part 3 - Continued
---
Intermittent life-test
end point (room
temperature) (1,000
hours):
1211
Insulation of
R
25
---
Meg
electrodes
1501
Intermittent life test
Stability life-test conditions;
---
---
---
---
TE = +220C (min)
(see note 4)
---
Intermittent life-test end
points (500 hours):
1301
Heater current
If
414
492
mA
A dc
1336
Heater-cathode
Ihk
---
60
leakage
A dc
1266
Total grid current (1)
Icl
0
-2.0
ĆPo
1341
Change in power
---
20
%
output (1) of
t
individual tubes
1341
Power output (1)
Avg
---
15
%
ĆPo
average change
t
1211
Insulation of
R
50
---
Meg
electrodes
ĆPo
1341
Power output (2)
---
15
%
Ef
---
Intermittent life-test end
points: (1,000 hours)
---
Inoperatives
---
---
---
---
1301
Heater current
If
414
492
mA
A dc
1336
Heater-cathode
Ihk
---
60
leakage
A dc
1266
Total grid current (1)
Icl
0
-2.0
ĆPo
1341
Change in power
---
25
%
output (1) of
t
individual tubes
1211
Insulation of
R
25
---
Meg
electrodes
ĆPo
1341
Power output (2)
---
20
%
Ef
4
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