MIL-PRF-1/1623C
TABLE I. Testing and inspection.
Limits
Inspection
Method
Test
Conditions
Symbol
Min
Max
Unit
Conformance inspection, part 1 8/
Heater current (nonoperating)
4289
----
Ef = 6.3 V
If
2.2
3.2
A
ek
6.8
7.3
kv
Electrode voltage (1)
1261
----
F = F1 through F3;
(cathode), small signal gain 6/
VSWR (load) = 1.5:1
(approximate)
ek
6.8
7.3
kv
Electrode voltage (2)
1261
----
F = F1 through F3;
(cathode), large signal gain) 6/
VSWR (load) = 1.5:1
(approximate)
Electrode current (cathode)
1256
3
ik
----
1.62
a
Gain (1)
4253
2
F = F1, F2, and F3
Gss
33
43
dB
Gain (2)
4253
3
F = F1, F2, and F3
G1s
33
40
dB
Gain (3)
4253
4
F = F1, F2, and F3
G1s
28.5
35
dB
Gain variation (1) 9/
4253
2
F = F1, F2, and F3
----
3
dB
Gss
Gain variation (2) 9/
4253
3
F = F1, F2, and F3
----
2
dB
G1s
Gain variation (3) 9/
4253
4
F = F1, F2, and F3
----
2
dB
G1s
Spurious output or stability 10/
4261
1
spo
----
-10
dBm
Input and output match
11/
4256
----
F = F1, F2, and F3;
VSWR
----
2.2:1
----
no voltages applied
Output power and gain variation (1)
4251
3
F = F1; eb = 1.02
----
1
dB
Po
Output power and gain variation (2)
4251
4
F = F3; eb = 0.98
----
1
dB
Po
Conformance inspection, part 3
Life test
----
3
Group D
t
1,000
----
hrs
Life-test end points 12/
----
3
F = F2
----
----
----
----
Gain (2)
4253
3
F = F2
G1s
31.75
----
dB
Low-frequency vibration 13/ 14/
1031
----
No voltages applied
----
----
----
----
Variable-frequency vibration
1031
----
No voltages applied
----
----
----
----
13/ 14/
Shock, specified pulse 13/ 14/
1042
----
Test condition G
----
----
----
----
Humidity 13/ 14/
1011
----
No voltages applied
----
----
----
----
Shelf life 14/ 15/
----
----
----
----
----
----
Permanence of marking 14/
1105
----
----
----
----
----
See footnotes at top of next page.
2
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