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Page Title:
Table I. Testing and inspection. |
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|  MIL-E-1/190J
TABLE I. Testing and inspection.
Limits
MIL-STD-1311
Requirement or test
Conditions
Symbol
Units
Test method
Min
Max
Conformance inspection,
part 1
1256
Electrode current (1)
See note 2 and 3
Ib
0.5
1.10
mA dc
(anode)
A dc
1256
Electrode current (2)
Ec = -2.8 V dc;
Ib
---
50
(anode)
Rk = 0 (see note 2)
A dc
1266
Total grid current
Eb = 150 V dc;
Ic
0
-0.3
Ec = 0; Rk/k = 820
ohms; Rg/g = 1.0
Meg (see notes 2 and 3)
1301
Heater current
If
280
320
mA
mhos
1306
Transconductance (1)
See note 2
Sm
1,500
2,100
A dc
1336
Heater-cathode leakage
See note 2
Ihk
---
5.0
1201
Short and discontinuity
---
---
---
---
detection
Conformance inspection,
part 2
1211
Insulation of electrodes
See note 2
---
50
---
---
1031
Low-frequency vibration
Rp = 10,000 ohms;
Ep
---
25
mV ac
E = 40 Hz; 15 G
(see note 2)
1246
Audio frequency noise
Esig = 45 mV ac;
EB
---
17
vu
Rg = 0.5 Meg;
Rp = 0.2 Meg;
Rk = 750 ohms;
(see note 4)
A dc
1266
Grid currents
Ef = 7.5 V;
Ic
0
-0.5
Ec = -4.0 V dc;
Eb = 150 V dc;
Rk = 0;
Rg/g = 1.0 Meg
(see notes 2 and 5)
ĆSm
1306
Transconductance (2)
Ef = 5.7 V
---
15
%
(see note 2)
Ef
---
1316
Amplification factor
See note 2
Mu
60
80
---
1321
AC amplification
Ebb = 100 V dc;
Ep
8.0
---
V ac
Ecc = 0;
Esig = 0.2 V ac;
Rk = 0 (see note 2)
2
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