MIL-PRF-1/1331F
TABLE I. Testing and inspection.
Inspection
Method
Conditions
Acceptance Symbol
Limits
Unit
MIL-STD-
level
10/
Min
Max
1311
Conformance inspection,
part 1
ma
200
---
0.65
Eb = Ec2 = 250 V dc;
2212
Pulsing emission
Ćik
Ec1 = -100 V dc;
egk/ik = 1.5 a;
prr = 11 ± 1;
tp = 4,500 µs min.;
Ef = 23.8 V ac;
tr = tf = 25 µs max;
slope = 0.5 percent max;
ripple = 0.1 percent max
1256
Eb = 1,000 V dc
0.65
Ic2
-3
+5
mA dc
Electrode current
(screen) (1)
Electrode current
Eb = 200 V dc;
1256
+5.0
---
mA dc
Ic2
0.65
(screen) (2)
Ec2 = 150 V dc;
Ec1/Ib = 150 mA dc
Electrode voltage
1261
Eb = 1,000 V dc
0.65
Ec1
-32
-46
V dc
(grid)
Total grid current
1266
Ib = 125 mA dc 5/
0.65
Ic1
---
-15
µA dc
v
18
8
0.65
egk
1372
Eb = Ec2 = 250 V dc;
Current division
ma
250
---
ic1
Ec1 = -100 V dc;
(method A, long pulse)
ma
260
---
ic2
egk/ib = 1.0 a;
prr = 11.0 ± 1.0;
tp = 4,500 µs (min)
0.65
Isg1
---
-25
Primary grid emission
1266
Ic1 = 70 ma dc;
µA dc
t = 15; anode and screen grid
(control)
floating
1266
Ec1 = 0;
Primary grid emission
0.65
Isg2
---
-250
µA dc
Ic2 = 100 mA dc;
(screen)
t = 15; anode floating
Heater current
1301
0.65
If
0.40
0.62
A ac
Conformance inspection,
part 2
Power output (1)
---
F = 150 MHz;
---
Po
225
---
W
Ec1 = -90 V dc;
(useful)
Ic1 = 25 mA dc max;
Eg1/Ib = 250 mA dc
Power output (2)
2214
Class C amplifier;
---
Po
145
---
W
Ef = 24.3 V ac;
(useful)
F = 460 to 490 MHz;
Eb = 1,250 V dc;
Ec1 = -90 V dc;
Ec2 = 250 to 300 V dc;
Ic1 = 20 mA dc max;
Eg1/Ib = 250 mA dc 6/
See footnotes at end of table.
2
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