MIL-PRF-1/1426E
TABLE I. Testing and inspection.
Inspection
Method
Notes
Condition
Symbol
Limits
Unit
MIL-STD-1311
Min
Max
Conformance inspection,
part 1
Pulse emission
3251
---
ik = 1,500 a;
egk
---
250
v
tp = 5 s 10 percent;
prr = 60 10 percent;
tr = 0.5 s (max);
specified time interval = 2.5 s
Heater current (cathode)
3241
---
If
11
18
A ac
Heater current (reservoir)
3241
---
Ires
3
8
A ac
Ef = Eres = 5.8 V ac;
3/ 4/
Operation (1)
3246
egy
---
450
v
epy = 24 kv; Ib = 2.2 A dc;
5/
t = 1 hour
egy
---
450
v
10/
Operation (1), except
Operation (2)
3246
Ef = Eres = 6.3 V ac; t = 5 hours
---
---
---
---
3/ 6/
epy = 18 kv (min);
Instantaneous starting
3267
Ef = Eres = 6.8 V ac
3247
---
Ef = Eres = 5.8 V ac
Ebb
---
1,000
V dc
DC anode voltage
for conduction
Conformance inspection,
part 2
s
Anode delay time
3256
---
Operation (1), except
tad
---
0.5
t = 120 seconds
tad
s
9/
Anode delay time
---
0.15
Anode delay time drift
3256
s
12/
Operation (2);
tj
---
0.005
Time jitter
3261
tk = 300 seconds
Conformance inspection,
part 3
11/
Sweep-frequency
1031
No voltages applied
---
---
---
---
vibration
11/
250 G; no voltages applied
---
---
---
---
Shock
1041
Shock and sweep-
---
---
DC anode voltage for conduction
Ebb
---
1,250
V dc
frequency vibration
end points
3/
Group C; t = 500 hours
---
---
---
---
Life test
---
Life test end points:
---
---
---
---
---
---
Except 5/
egy
---
450
v
Operation (1) and (2)
3246
---
DC anode voltage
3247
13/
Ebb
---
1,250
V dc
s
Time jitter
3261
---
tj
---
0.005
See footnotes at top of next page.
2
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