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Page Title:
Discrete Signal Interface Requirements - Continued |
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|  MIL-S-70442 (AR)
APPENDIX A
DIGITAL SIGNAL INTERFACE REQUIREMENTS
IDENT NUMBER 52
NOMENCLATURE
RAW LRF DATA
TYPE
ASCII 7 BIT
CONDUCTOR TYPE AND GAUGE
TWISTED
PAIR
SHIELDED
ORIGIN
TOW\TSU-LRF
DESTINATION
HUDS
DESTINATION IMPEDANCE
SEE
REMARKS
SOURCE
TOW\TSU-LRF
SOURCE IMPEDANCE
<100
OHMS
ADDRESS
N/A
NO. OF BITS/WORDS
8
BITS\l
PARITY\l
START/
2 STOP=12 BITS
FIRST TRANSMITTED BIT
START
BIT
SCALE FACTOR
N/A
LSB VALUE (RESOLUTION)
SEE FIGURE 4
PARAMETER RANGE
SEE FIGURE 4
PARAMETER ACCURACY
N/A
TRANSMISSION RATE
9600 BAUD
ITERATION RATE
SEE FIGURE 4
TRUE STATE VOLTAGE
TTL COMPATIBLE (SEE FIGURE 2)
FALSE STATE VOLTAGE
TTL COMPATIBLE (SEE FIGURE 2)
REMARKS
,
This signal must be compatible with Fairchild 9615, or equivalent,
differential TTL receiver. This signal will be continuously sent to
the HUD. The HUD will display raw laser range data when "FCC GOOD"
(discrete #20) false state voltage occurs.
66
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