MIL-PRF-1/1631B
TABLE I. Testing and inspection.
Limits
Inspection
Method
Conditions
Symbol
Min
Max
Unit
Conformance inspection, part 1
Emission
1231
Er = -350 to -450 V dc;
----
-15
%
Irs/Irs
Ef = 5.7 V 6/ 7/
Resonator current
4212
Er/max Po
Irs
----
80
mA dc
Reflector voltage
4213
Er/max Po 2/
Er
-250
-400
V dc
Total reflector current
4229
Er = -350 to -450 V dc 7/
Ir
----
5
A dc
Heater current
1301
Ef = 6.3 V
If
----
0.9
A
Mechanical tuning
4223
Er/max Po 9/
F
7.125
7.425
GHz
Power output
4211
Er/max Po
Po
1.0
----
W
Electronic tuning range
4201
Er/50 percent max Po
28
----
MHz
F
Hysteresis
4231
Er/max Po 8/
Ratio
----
50
%
Operating torque
4223
Torque
----
32
oz.-in.
Conformance inspection, part 2
Heater frequency modulation
----
Ef = 6.3 V at 400 Hz
----
30
kHz (p-p)
F
Temperature coefficient
4027
----
Er/max Po; TA = +25 to +80 4/
F/ TA
100
kHz/ C
Reflector voltage modulation
4215
225
525
kHz/V
Er/max Po; F < 5 MHz
F/ Er
coefficient
Beam voltage modulation
----
----
kHz/V
Er/max Po; Ers = +9 V dc
F/ Ers
150
coefficient
Conformance inspection, part 3
Service-life guarantee
----
Er/max Po
t
7,500
----
hr
Service-life guarantee end points:
----
Er/max Po
Po
0.80
----
W
Periodic-check tests
10/
Effective position of resonator
----
No voltages 5/
----
0.106
0.156
in.
1/
Ratings should not be exceeded under continuous or transient conditions. A single rating may be the limitation, and simultaneous
operation at another rating may not be possible. Design values for systems should include a safety factor to maintain operation
within ratings under voltage and environmental variations.
2/
Reflector voltage must always be negative with respect to the cathode by at least 20 volts.
3/
All oscillation tests shall be made with the tube rigidly connected to a UG-344/U (MIL-F-3922/55) flange on RG-50/U (MIL-W-85/1)
waveguide equipment. The load VSWR for the tube shall be less than 1.1:1. Forced-air cooling of at least 30 cfm is required in the
fin and the waveguide as shown in figure 1. For maximum tube life, the tube temperature should be less than 100 C.
2
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