MIL-PRF-49040F
(6) Operational fluctuation @ .05 to .1 fc shall be not greater
than plus or minus 10 percent of steady state value for not
less than 30 seconds.
(7) Rise time - not greater than 5 seconds, overshoot less than 40
percent of steady state output brightness.
(8) The variation between
room temperature gain tests prior to high
temperature and after
cold temperature shall not be greater
than plus or minus 15
percent. The room temperature EBI shall
to 2 x 10-11 lumens/cm2 after high and low
be less than or equal
temperature test.
Shock from -54oC to +25oC within 5 minutes.
g.
Temperature shock:
+25oC, 1 to 16 hours
h.
Stabilization temperature:
Battery Operation Temperature: -17.8°C, 30 minutes minimum
i.
(1) Gain @ 1 to 5 x l0-6 fc - Not less than 30 thousand and not
greater than 70 thousand.
(2) Rise time - Not greater than 5 seconds.
3.5.2.6 Equivalent background input. The equivalent background input
at room temperature shall not exceed 2 x 10-11 lumens/cm2.
3.5.2.7 Luminance gain. The assembly shall have a room temperature
(see 3.5.3.12) luminance gain and high light saturation characteristic as
specified in Table IV. The input current shall not exceed 32 milliamperes
(mA) at the light levels specified.
TABLE IV.
Saturation requirements for luminance gain.
Input
Nominal
Minimum
Maximum
Minimum
Maximum
Max.
Manual
Input
Allowable
Allowable
Allowable
Allowable
Input
Gain
Light
Gain
Gain
Output
Output
Curren
setting
Level
Brightness
Brightness
t
(fc)
(ft-l)
(ft-l)
(mA)
5 X 10-6
Maximum
40,000
70,000
--
--
32
5 X 10-4
Maximum
--
--
2
10
32
5 X 10-2
Maximum
--
--
2
10
NA
10-3
Maximum
10.0
0
--
--
NA
5 X 10-5
Maximum
2,000
10,000
--
--
32
5 X 10-3
Maximum
--
--
2
10
32
3.5.2.8 Time dependent bright source. When the assembly is subjected to
a periodic pulsed input illumination in such a manner as to give rise to photo-
currents in accordance with profiles (a) and (b) as shown in Figures 3 and 4,
the assembly shall have response at maximum manual gain setting as set forth
below.
3.5.2.8.1 Recovery time, profile (a) Figure 4. The assembly shall
recover to within ± 50 percent of the ambient useful steady state output
brightness (see 3.5.3.10) in 400 milliseconds or less after the end of the
applied illumination, profile (a). Recovery time to the ambient useful steady
state output brightness shall be not greater than 800 milliseconds.
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