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|  MIL-D-70789A (AR)
f.
I, identifier. The identification character
indicates the type of message being returned from the DRU.
Descriptions of each message are contained in Appendix D. The
identifier is 5 bits. The identifier character also contains an
echo of the command message sequence number which is 3 bits.
ECHO OF
MESSAGE
SEC). NO.
IDENTIFIER
L
M
S
S
B
B
XXXXX
XXX
43210
765
g. X, Symbol . An X indicates a binary "1" or "0" in a
command or identifier character.
3.5.4.4.3.2 Commands. Command code 6 (00110) is available
for use by contractors (30.2.12). Other commands are divided
into three categories. These categories are:
a. Those commands that transfer data from the prime
system or CDU to the DRU. Detailed descriptions of these
commands and data are found in Appendix A. These commands are:
ACCEPT POSITION (NAVIGATION UPDATE) (30.1.1)
(1)
(2) ACCEPT POINTING DDEVICE BORESIGHT (30.1.2)
ACCEPT CONFIGURATION DATA (30.1.3)
(3)
(4) ACCEPT VEHICLE BORESIGHT (30.1.4)
(5) ACCEPT GEODETIC DATA (30.1.5)
b.
Those commands that request transfer of data from the
DRU to the prime system or CDU. Detailed descriptions of these
commands are found in Appendix B. These commands are:
(1)
POINTING DEVICE RATE DATA (30.2.1)
RETURN
RETURN
CONFIGURATION DATA (30.2.2)
(2)
(3)
RETURN
STATUS (30.2.3)
(4)
RETURN
NAVIGATION DATA (30.2.4)
ATTITUDE DATA (30.2.5)
RETURN
(5)
ALIGN TIME TO GO (30.2.6)
RETURN
(6)
(7)
RETURN
ALERT DATA (30.2.7)
(8)
RETURN
BIT DATA (30.2.8)
RETURN
TRAVEL LOCK DATA (30.2.9)
(9)
POSITION DATA (30.2.10)
(10)
RETURN
(11)
RETURN
POINTING DEVICE ATTITUDE DATA (30.2.11)
32
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