MIL-PRF-1/1670D
TABLE I. Testing and inspection - Continued.
MIL-STD-
Limits
1311
Inspection
Method
Conditions
Symbol
Min
Max
Unit
Conformance inspection,
part 3
Life test
---
Group C; power gain
---
---
---
---
except
pd = 1,000 w
t = 500 hours 7/
Life-test end points:
---
po
9.0
---
kw
useful
Power gain
---
ib
---
3.5
a
µA dc
1266
Isg1
---
-100
Primary grid emission
(control)
µA dc
Primary grid emission
1266
Isg2
---
-250
(screen)
Coolant-pressure drop
---
0.35
P
1155
Eb = 1,000 V dc;
In.H20
versus coolant flow
---
250
T(anode)
Ec1 = 0;
°C
(forced air)
core
Ec2/Ib = 250 mA dc;
airflow = 4.8 cfm
(max) 8/ 9/
Low-frequency vibration
1031
No voltages
12/
---
---
---
---
Shock, specified pulse
1042
No voltages; 12/
---
---
---
---
accel = 15 G peak
(min);
D = 11 ± 2 ms half-
sine wave
---
Shock and low-frequency
vibration low points:
Electrode voltage (grid)
1261
Ec1
-35.0
-48.0
V dc
µA dc
Total grid current
1266
Ic1
---
-15
F
465
489
MHz
Resonance
---
No voltages applied
5/ 8/
See footnotes at top of next page.
3
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