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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 2 -
Continued
2126
Envelope strain
---
---
---
---
1041
Shock
450 G:
Ebk = +100 V dc;
Rg1 = 0.1 Meg
1031
Vibration fatigue test
2.5 G; fixed frequency;
---
---
---
---
F = 25 min, 60 max
---
Post-shock and vibration-fatigue test
end points:
1031
Low-frequency
Ep
---
300
mV ac
vibration
A dc
1336
Heater-cathode leakage
Ihk
---
40
ĆPo
1341
Change in power
---
20
%
output (1) of
t
individual tubes
1105
Permanence of marking
---
---
---
---
Conformance inspection, part 3
1516
Stability life test
Eb = Ec2 = 100 V dc;
---
---
---
---
Ehk = +200 V dc;
Rgl = 0.47 Meg;
Rk = 220 ohms;
TA = room
---
Stability life test end point:
ĆPo
1341
Change in power
---
10
%
output (1) of individual tubes
t
1506
Heater-cycling life test
Ef = 7.0 V;
---
---
---
---
1 min "on";
4 min "off";
Ehk = 140 V ac;
Ecl = Ec2 = Eb = 0
---
Heater-cycling life -
test end point:
A dc
Heater-cathode
Ihk
---
40
leakage
1501
Intermittent life test
Stability life-test,
---
---
---
---
(room temperature)
or equivalent
conditions; TA = room
---
Intermittent life-test end point
(room temperature 500 hours):
1211
Insulation of electrodes
R
50
---
Meg
3
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