MIL-PRF-1/1648C(NAVY)
TABLE I. Testing and inspection - Continued.
Sampling
Inspection
Limits
Inspection
Method
Notes
Conditions
plan
level
Symbol
Unit
or code
Min
Max
Conformance inspection,
part 3
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Life test
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8/
Group C; linear
amplifier power output
and distortion;
except Eg1/Po
= 1,100 W (useful);
t = 500 hours
Life test end point:
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Linear amplifier
1,000
2204
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Po
W
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power output and
(useful)
distortion
-33
3rd IM
dB
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5th IM
dB
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-38
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Ep
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30
V ac
Vibration (noise)
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4/ 5/
Ebb = 2,500 V dc;
Ec2 = 400 V dc;
Ec1/Ib = 250 mA dc;
Ef = 6.0 V ac or V dc;
Rp = 1,000 ohms;
Accel = 10 G peak
(min); F = 28 to 500
Hz; ascending sweep
only
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Vibration (noise)
end point:
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Ec1
-48.0
-62.0
V dc
1261
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Electrode voltage
(grid)
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Shock, specified pulse
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4/ 6/
Eb = 2,000 V dc;
(long duration)
Ec2 = 400 V dc;
Ec1 = -200 V dc;
Shock = 11 2 ms;
Accel = 50 G peak
(min);
total impacts = 9
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Shock, specified pulse
(long duration) end
point:
1261
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Ec1
-48.0
-62.0
V dc
Electrode voltage
(grid)
Stability
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4/ 7/
Eb = 2,900 V dc;
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30
mA dc
Ib
Ec2 = 225 V dc;
Ec1/Ibo = 300 mA dc;
t = 90
See footnotes at top of next page.
3