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