MIL-DTL-62545E
TABLE IV. OFSA connections (J3). 1/
Pin
Function
In/Out
Signal (see table I)
Duration
A
Power to OFSA number 1
Out
15 to 30 V dc
150 mA minimum
15 mA minimum (quiescent)
Return from OFSA number 1
B
Out
Large fire signal from OFSA
Signal A
C
In
1) As long as fire exceeds
number 1
threshold, or
2) for not less than 5 ms
and not more than 4.0 s
following BITE signal.
Small fire signal from OFSA
Signal A
D
In
Same as Pin C
number 1
BITE signal to OFSA number 1
Signal A
E
Out
5 ms to 4.0 s
Power to OFSA number 2
15 to 30 V dc
J
Out
150 mA minimum
15 mA minimum (quiescent)
Return from OFSA number 2
K
Out
Large fire signal from OFSA
Signal A
L
In
Same as Pin C
number 2
Small fire signal from OFSA
Signal A
Same as Pin C
M
In
number 2
BITE signal to OFSA number 2
Signal A
5 ms to 4.0 s
N
Out
Power to OFSA number 3
15 to 30 V dc
T
Out
150 mA minimum
15 mA minimum (quiescent)
Return from OFSA number 3
U
Out
Large fire signal from OFSA
Signal A
Same as Pin C
V
In
number 3
Small fire signal from OFSA
Signal A
Same as Pin C
W
In
number 3
BITE signal to OFSA number 3
Signal A
5 ms to 4.0 s
X
Out
See footnotes at end of table.
10
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