MIL-E-1/175K
TABLE I. Testing and inspection - Continued.
Limits
MIL-STD-1311
Requirement or test
Units
Conditions
Symbol
Method
Min
Max
Conformance inspection, part 2 -
Continued
Envelope strain
2126
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Shock
1041
450 G:
Ebk = +100 V dc;
Rg1 = 0.1 MegΩ
Vibration fatigue test
1031
2.5 G; fixed frequency;
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F = 25 min, 60 max
Post-shock and vibration-fatigue
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test end points:
Low-frequency vibration
1031
Ep
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300
mV
ac
Heater-cathode leakage
1336
Ihk
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40
ľA dc
ΔPo
Change in power output (1)
1341
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20
%
of individual tubes
t
Permanence of marking
1105
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Conformance inspection, part 3
Stability life test
1516
Eb = Ec2 = 100 V dc;
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Ehk = +200 V dc;
Rgl = 0.47 MegΩ;
Rk = 220 ohms;
TA = room
Stability life test end point:
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ΔPo
Change in power output (1)
1341
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10
%
of individual tubes
t
Heater-cycling life test
1506
Ef = 7.0 V;
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1 min "on";
4 min "off";
Ehk = 140 V ac;
Ecl = Ec2 = Eb = 0
Heater-cycling life-test end point:
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Heater-cathode leakage
Ihk
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40
ľA dc
Intermittent life test
1501
Stability life-test, or
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(room temperature)
equivalent conditions;
TA = room
Intermittent life-test end point
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(room temperature, 500 hours):
MegΩ
Insulation of electrodes
1211
R
50
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3
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