Operation Manual

111
AppendixNAVI/AV
• If you keep driving or scrolling the map to a
point where the map can no longer be
displayed, the scale automatically switches to
a range possible to display. If you would like to
continue driving or scrolling the map at the
same scale, set the map disc in the navigation
unit.
• You cannot reroute to avoid traffic jam or
closure.
• If you continue to drive outside the route for a
while, you may not be able to perform map
matching.
• If you deviate from the route during memory
navi mode, the route has been set will be
rerouted, but only to return you to the original
route calculated within the memorised area.
• Although an enlarged map of the intersection
will be displayed, no special motorway
illustration (illustration of motorway junctions)
will be displayed.
• Voice recognition functions face some
limitations compared to DVD navi mode.
➲ “Voice commands” ➞ Page 102
• In memory navi mode, the voice function to
inform you of traffic jam or closure forming on
the route does not function.
Cautions relating to auto reroute
in memory navi mode
Auto rerouting in memory navi mode is designed
to return you to your original route wherever
possible.
In memory navi mode, persistently deviating from
the route may result in one of the following:
• A clearly circuitous route
• Leaving a toll road and returning to the toll
road from where you left it.
In the above case, if the set route seems
unsuitable, insert the map disc. Setting the map
disc to navigation automatically resets the route
from your current location to your destination.
TMC icon during the memory
navi mode
• TMC-related data for one country only can be
memorised. Therefore, if appears on
the screen when crossing an international
border, you will need to insert the disc to use
the RDS-TMC function. Touching
allows you to check the locations of the traffic
information along the route. However, you
cannot perform rerouting.
Operation outside the
memorised area
When the vehicle leaves the memorised area, the
functions will be limited.
• The auto reroute function does not work.
• You can only display a larger scale map. The
map display will automatically change to a 50-
km (or 100-km) scale.
• The map matching function will not be
available. Therefore, the position of your
vehicle may be misaligned.
• Only the navigation guidance when arriving to
your destination will be available; no other
guidance is possible (this includes no display
of direction arrows).
To cancel these limitations, reset the map disc to
the navigation system.
Positioning Technology
The Navigation System accurately measures your
current location by combining the positioning by
GPS and by Dead Reckoning.
Positioning by GPS
The Global Positioning System (GPS) uses a
network of satellites orbiting the Earth. Each of
the satellites, which orbit at a height of 21,000
km, continually broadcasts radio signals giving
time and position information. This ensures that
signals from at least three can be picked up from
any open area on the earth’s surface.
The accuracy of the GPS information depends on
how good the reception is. When the signals are
strong and reception is good, GPS can determine
latitude, longitude, and altitude for accurate
positioning in three dimensions. But if signal
MAN-CNDV-50MT-EN.book Page 111 Wednesday, May 4, 2005 1:49 PM