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|  MIL-D-70789A (AR)
APPENDIX D
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ALIGN TIME TO GO
30.4.5 Message:
From: DRU
To: Prime System
Number of Data Characters: 2
Data Format:
Binary
MESSAGE STRUCTURE
STATUS
ERROR DET.
ECBO
DATA(D)
CODE (E) FLAG(F)
FLAG(F)
SEQ#(N) IDENTIFIER(I) S1,S2
00111
16 Bits
D1-D2
16 bits 01111110
01111120 XXX
The two data characters represents
a. In Normal Align: the amount of time remaining until Normal Align is
complete. When Normal Align is interrupted, ALIGN TIME TO GO shall be
frozen until the DRU is stationary and alignment resumed. ALIGN TIME
TO GO shall indicate a value of "O" vhen alignment is complete.
In Stored Heading Align: the amount of time remaining until Stored
b.
Heading Align is complete.
c. At completion of Stored Heading Align:
If the Odometer/Exclusive ZUPT Mode configuration definition flag is
set, ALIGN TIME TO GO shall indicate the "stopped" time remaining
until the DRU can operate in the Odometer Mode. When "stopped" time
is not being accumulated, ALIGN TIME TO GO shall be frozen. When the
DRU enters the Odometer Mode, ALIGN TIME TO GO shall indicate a value
of "0".
If the Odometer/Exclusive ZUPT Mode configuration definition flag is
reset, ALIGN TIHE TO GO shall indicate a value of "0".
Normal Align Time To Go
D1, D2 Characters (11 bits)
Range:
0 to 2047 seconds
Resolution: 1 second
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