MIL-PRF-1/924H
TABLE I. Testing and inspection
Limits
Method
Conditions
Symbol
Unit
Acceptance
Requirement or Test
MIL-STD-1311
Min
Max
level
note16
Conformance inspection, part 1
Stabilization
---
See note 6
---
---
---
---
---
Short and discontinuity
1201
0.4
---
---
---
---
detection
Emission (1)
1231
Eb = 75 V dc
0.65
Is
240
400
mA dc
See note 7
Filament current
1301
0.65
If
1.95
2.2
A
Operation of rectifiers (1)
1353
Full wave; tk = 10
0.65
Io
245
260
mA dc
See notes 8 and 9
(bogey)
Conformance inspection,
part 2
Barometric pressure,
1002
Pressure =
6.5
---
---
---
---
reduced (1)
140 ±10 mmHg;
Ef = 5.0 V ac;
Epp/a = 1,050 V ac;
full wave;
R1/Io = 165 mA dc;
tk = 10; C1 = 4 µF;
Zp/a = 500 ohms;
including
transformer;
See note 10
6.5
---
---
---
---
Barometric pressure,
1002
Pressure = 55 ±5
reduced (2)
mmHg; Ef=5.0 V ac;
epx = 1,850v;
C1 = 4 µF; tk = 10;
R1/Io = 275 mA dc;
Zp/a = 200 ohms;
including
transformer
See note 10
Low-frequency vibration
1031
No voltages
6.5
---
---
---
---
ĆIs
Emission (2)
1231
Ef = 4.5 V ac;
2.5
---
15
%
Ep = 75 V dc
Ef
See notes 7 and 11
---
Io
140
---
mA dc
Operation of rectifiers (2)
1353
epx = 2,800 Vac;
full wave;
Zp/a = 500 ohms;
c1 = 4µF; tk = 10;
R1 = 7,000 ohms
Alinement
---
See note 12
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---
---
---
---
Shock
1041
900G; Ef = 5.0 V ac
---
---
---
---
---
(only voltage
applied)
6.5
---
---
---
---
Vibration fatigue
1031
2.5 G; fixed
frequency;
F = 25 Hz (min),
60 Hz (max)
See note 10
Post-shock and
vibration fatigue test
end point:
Operation of rectifiers (1)
1353
---
Io
240
---
mAdc
2
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