MIL-PRF-1/1254E
TABLE I. Testing and inspection - Continued.
MIL-STD-
Limits
1311
Inspection
Method
Conditions
Symbol
Min
Max
Unit
Conformance inspection,
part 2
50 psia (min) 3/
---
---
Pressure operation
---
---
---
Nr
---
1.3
---
Ignitor noise ratio
4460
F = F1 +30 MHz; F = F4;
F = F7 -30 MHz
Ii = 100 µA dc (min)
Arc loss
4486
F = F4
Li
---
0.8
dB
Vibration (2)
4021
F = 45 to 55 Hz;
Eid
100
---
V dc
20 G; t = 10 minutes;
Ii = 100 µA dc on each ignitor 8/
Low-level VSW R
4473
F = F2, F3, F4, and F5
---
---
1.2
---
Duplexer loss
4489
F = F1 and F7
Li
---
1.2
dB
Spike leakage energy (2)
4452
Ws
---
0.5
ergs
T = +125°C 4/;
Ii = 100 µA dc on each ignitor
Flat leakage power (2)
4452
po
---
150
mW
T = +125°C 4/;
Ii = 100 µA dc on each ignitor
t
---
3.0
Recovery time
4471
µs
T = TA and +125°C;
po = 150 kw ± 10%;
tp = 1.0 µs ± 0.05 µs;
F = F4 ± 5%
Conformance inspection,
part 3
---
50
Li
Temperature-cycling life test
4006
µA dc
T = -55°C to +125°C;
Ebb = -800 V dc;
Ri = 4.9 MegΩ each ignitor; Group C;
10 Hz (min) 2/
Life-test provisions
---
---
---
---
---
po = 150 kw ± 5%
Eff = -800 V dc; Ri = 4.9 MegΩ
on each ignitor;
t = 100 hours at +125°C and 400
hours at +85°C; Group D 6/
---
Life-test end points:
V dc
475
225
4406
Eid
Ignitor voltage drop (1)
Ii = 100 µA dc
8
---
4471
t
Recovery time
µs
T = TA
po = 150 kw
tp = 1.0 µs ± .05%
1.2
---
4489
Li
Duplexer
dB
F = F4
0.5
---
4452
Ws
Spike leakage energy
erg
T = +125°C 4/
2.0
---
---
NF
Mixer NF degradation
dB
6/
See footnotes at top of next page.
3
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