MIL-PRF-1/1661C
TABLE I. Testing and inspection.
Acceptance
Limits
Inspection
Method
Conditions
Level 11/
Symbol
Min
Max
Unit
Conformance inspection,
part 1
Instantaneous starting 4/
0.65
----
----
----
----
3267
epy = 12 kv (min);
Ef = 6.8 V ac
Operation (1) 5/
3246
Ef = 5.8 V ac;
0.65
egy
----
150
v
epy = 14 kv;
t = 10 minutes
3247
DC anode voltage for
Ef = 5.8 V ac
0.65
Ebb
----
300
V dc
conduction
0.65
egk
----
200
v
Pulse emission
3251
ik = 350 a;
tp = 5.0 µs ± 10%;
prr = 60 ± 10%;
tr = 0.5 µs (max);
specified time
interval = 2.5 µs
Heater current
3241
0.65
If
4.5
9.5
A ac
Conformance inspection,
part 2
Operation (1A)
3246
Operation (1);
----
egy
----
150
v
Ef = 6.8 V ac;
tk = 5 minutes;
t = 10 minutes
Anode delay time
3256
Operation (1);
----
tad
----
0.5
µs
t = 120 seconds
Anode delay time drift 6/
3256
Anode delay time
----
----
0.10
Ćtad
µs
----
tj
----
0.005
Time jitter 5/ 7/
3261
Operation (1),
µs
except epy = 3 kv
Conformance inspection,
part 3
---
---
---
---
---
Life test 5/
----
Group C;
t = 96 hours "on"
and 1 hour "off"
(tube mounted in
horizontal position);
t = 500 hours
---
Life test end points:
v
150
----
egy
----
3246
Operation (1) and (1A)
V dc
300
----
Ebb
----
3247
DC anode voltage for
conduction
0.005
----
tj
----
egy = 150 v
3261
Time jitter
µs
Variable-frequency
1031
No voltages applied
----
----
----
----
----
vibration 8/ 9/
Shock
8/
----
----
----
----
----
1041
100 G; no voltages
applied
See footnotes at end of table.
2