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Page Title:
Discrete Signal Interface Requirements - Continued |
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|  MIL-S-70442 (AR)
APPENDIX A
IDENT NUMBER 33
b
DISCRETE SIGNAL INTERFACE REQUIREMENTS
ASCEND COMMAND
NOMENCLATURE
DC
TYPE
SINGLE WIRE UNSHIELDED
CONDUCTOR TYPE AND GAUGE
TOW/SCA
ORIGIN
HUDS/SIGNAL PROCESSOR
DESTINATION
>20 K OHMS
DESTINATION IMPEDANCE
TOW/SCA
SOURCE
7K OHMS (SEE REMARKS )
SOURCE IMPEDANCE
1 MA
MAX CURRENT
llv
MAX VOLTAGE
+10 +
lV (ASCEND)
TRUE STATE VOLTAGE
OPEN
CIRCUIT
FALSE
STATE
VOLTAGE
REMARKS
10 VDC CAUSES HUD TO DISPLAY ASCEND COMMAND SYMBOL WHEN IN TOW MODE
OF FIRE.
6.81K + 1%
TO
RCA
10 + 1V
HUDS
CD 4001A
.
LOAD
IN 3600
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