MIL-E-1/197F
TABLE I. Testing and inspection.
Limits
MIL-STD-1311
Conditions
Symbol
Requirement or test
Units
Method
Min
Max
First Article inspection
Base material insulating
1216
Zone 5 (min)
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quality
Variable-frequency
1031
Rp = 2,000 ohms;
Ep
---
1,000
mV ac
vibration
Ec1 = -27 V dc
Conformance inspection,
part 1
µA dc
Total grid current
1266
Eb = 400 V dc;
Ic1
0
-3.0
Ec2 = 300 V dc;
Ec1 = -22 V dc
2/
Electrode current
1256
Eb = 400 V dc;
Ib
50
80
mA dc
(anode)
Ec2 = 300 V dc:
Ec1 = -22 V dc
Electrode current
1256
Eb = 400 V dc;
Ic2
0
5.0
mA dc
(screen)
Ec2 = 300 V dc:
Ec1 = -22 V dc
Power output
1341
Esig = 9.8 V ac;
Po
5.4
---
W
Rp = 2,500 ohms
Emission
1231
Eb = Ec1 = Ec2 = 50 V dc
Is
275
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mA dc
2/
Short and discontinuity
1201
---
---
---
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detection
Conformance inspection,
part 2
Insulation of electrodes
1211
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Heater current
1301
If
840
960
mA
µA dc
Heater-cathode leakage
1336
Ihk
---
75
µmhos
Transconductance
1306
Sm
5,200
6,800
Audio frequency noise
1246
Ecal = 280 mV ac;
EB
---
17
vu
Rp = 2,000 ohms
Low-frequency vibration
1031
Rp = 2,000 ohms;
Ep
---
1,000
mV ac
Ec1 = -27 V dc
Shock
1041
450 G;
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Ehk = 100 V dc
3/
Vibration-fatigue test
1031
25 G; F = 25 min, 60 max;
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fixed frequency
Post shock and vibration-
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Low frequency vibration
Ep
---
1,000
mV ac
fatigue test end points
µA dc
Heater-cathode leakage
Ihk
---
100
µmhos
Transconductance
Sm
4,500
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See footnotes at end of table.
2
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