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|  MIL-E-1/9H
TABLE I. Conformance inspection - Continued.
Method
Requirement or test
Conditions
Acceptance
Symbol
Unit
Limits
MIL-STD-
Level
Min
Max
1311
(note 12)
Conformance inspection,
part 2 -
Continued.
mhos
---
Post-shock and vibration-
Conversion trans-
---
Sc
250
---
fatigue test end points
conductance (1)
Low-frequency
---
Ep
---
450
mVac
vibration
Adc
Heater-cathode
---
Ihk
---
30
leakage
Adc
Total grid 3 current
---
Ic3
0
-2.0
Conformance inspection,
part 3
1506
Heater-cycling life test
Ehk = 135 Vdc;
---
---
---
---
---
Ef = 7.5 V;
Eb = Ec1 = Ec2
and 4 = Ec3 = 0;
1 min "on"
4 min "off"
See note 6
Heater-cycling life
test end point:
Adc
1336
Heater-cathode
---
Ihk
---
20
leakage
1516
Stability life test
Ec1 = -16 Vdc;
---
---
---
---
---
Ehk = +135 Vdc;
Rg3 = 0.05 MegΩ;
TA = room
See note 7
Stability life-test end
point:
ĆSc
---
10
%
1326
Change in conversion
---
t
transconductance
(1) of individual
tubes
4
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