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Page Title:
Pointing device boresight angles. |
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|  MIL-D-70789A (AR)
Travel lock discrete. When set the DRU shall use the
c.
travel lock discrete to determine if it is in or out of travel
lock. When reset the DRU shall ignore the travel lock discrete.
Travel lock commands. When set the DRU shall use the
d.
IN TRAVEL LOCK and OUT OF TRAVEL LOCK commands to determine if it
When reset the DRU shall not use
is in or out of travel lock.
the IN TRAVEL LOCK and OUT OF TRAVEL LOCK commands and shall set
bit 6 of ALERT DATA character D5 if either command is received.
When the Travel Lock Commands Flag is set, the DRU shall assume
it is in travel lock at turn on. (NOTE: To prevent conflicts in
determining travel lock status, the Travel Lock Discrete Flag and
Travel Lock Commands Flag should not be set simultaneously.) If
both the Travel Lock Discrete Flag and Travel Lock Commands Flag
are reset, the DRU shall assume it is always in travel lock.
Shot Detect. When set the DRU shall detect gunfire
e.
and correct the travel lock references for vehicle rotations
which occur during gun firing. When reset the DRU shall neither
detect gunfire nor perform these corrections.
Pointinq device boresignt angles. When set the DRU
f.
shall use Pointing Device boresight angles entered via the ACCEPT
POINTING DEVICE BORESIGHT command. When reset the DRU shall use
the stored Pointing Device boresight angles in the selected
configuration code, and shall set bit 7 of ALERT DATA character
D5 if an ACCEPT POINTING DEVICE BORESIGHT command is received.
g. Azimuth. When set the DRU shall output geodetic
azimuth. When reset the DRU shall output grid azimuth.
When set the DRU shall output
h. Vehicle cant/roll.
vehicle roll. When reset the DRU shall output vehicle cant.
i. Vehicle boresiqht angles. When set the DRU shall use
vehicle boresight angles entered via the ACCEPT VEHICLE BORESIGHT
command. When reset the DRU shall use stored vehicle boresight
angles in the selected configuration code and shall set bit 7 of
ALERT DATA character D5 if an ACCEPT VEHICLE BORESIGHT command is
received.
j. BCU Parameters. When set the DRU shall: accept BCU
spheroid, hemisphere and zone in the ACCEPT POSITION command;
output BCU spheroid, hemisphere and zone in the NAVIGATION DATA
Message; and output Pointing Device Grid Azimuth in terms of the
BCU spheroid, hemisphere and zone. When reset the DRU shall
accept the extended zone hemisphere and zone in the ACCEPT
POSITION command; and output Pointing Device Grid Azimuth in
terms of the normal spheroid and normal or extended hemisphere
and zone.
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