MIL-E-1/85D
TABLE I. Testing and inspection.
Limits
MIL-STD-1311
Requirement or test
Unit
Conditions
Symbol
Method
Min
Max
Conformance inspection,
part 1
Electrode current (anode)
1256
Ib
33
57
mAdc
Power oscillation
1236
Eb = 300 Vdc;
Po
1.5
---
W
Rg1= variable;
Ib = 58 mAdc;
F = 135 MHz
Emission
1231
Eb = Ec = Ec2 = 30 Vdc;
Is
170
---
mAdc
Ec3 = 0
See note 2.
Rg1 = 0.1 MegΩ
Total grid current
1266
Ic
0
-2.0
ľAdc
See note 2.
Short and discontinuity
1201
---
---
---
---
detection
Conformance inspection,
part 2
Low-frequency vibration
1031
Ec1 = -15Vdc;
Ep
---
500
mVac
Rp = 2,000 ohms
Heater current
1301
If
690
810
mAdc
Heater-cathode leakage
1336
Ihk
---
50
ľAdc
Electrode current (screen)
1256
Ic2
---
10
mAdc
Direct-interelectrode
1331
No shield
Cgp
---
0.3
pF
capacitance
Cin
8.0
11.0
pF
Cout
3.8
5.2
pF
Insulation of electrodes
1211
---
---
---
---
Base strain
1121
---
---
---
---
Glass strain
2126
---
---
---
---
Permanence of marking
1105
---
---
---
---
Conformance inspection,
part 3
Intermittent life test
1501
Group A; Eb = 300 Vdc;
---
---
---
---
Ec2 = 300 Vdc;
Rg1 = 17,000 ohms;
Rg2 = 32,000 ohms;
Ib = 45 mAdc;
F = 120 MHz
Intermittent life-test end
---
Power oscillation
Po
1.0
---
W
points (500 hours)
NOTES:
1/
See "Reduced pressure (altitude) rating", and altitude, maximum peak voltage.
2/
This test to be performed at the conclusion of the holding period.
2
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