Glossary - Clarion NX501E Owner's Manual & Installation Manual

5 Glossary

2D/3D GPS reception
The GPS receiver uses satellite signals to calculate
its (your) position and needs at least four signals to
give a three-dimensional position, including elevation.
Because the satellites are moving and because objects
can block the signals, your GPS device might not
receive four signals. If three satellites are available, the
receiver can calculate the horizontal GPS position but
the accuracy is lower and the GPS device does not
give you elevation data: only 2D reception is possible.
Active route
The currently navigated route. Whenever the destination
is set, the route is active until you delete it, reach your
destination or you quit Clarion Mobile Map. See also:
Route.
City Centre
The city/town centre is not the geometric centre of the
city/town but an arbitrary point the map creators have
chosen. In towns and villages, it is usually the most
important intersection; in larger cities, it is one of the
important intersections.
Colour theme
Clarion Mobile Map comes with different colour themes
for daytime or night use of the map and menu screens.
Themes are custom graphic settings and they can have
different colours for streets, blocks or surface waters
in 2D and 3D modes, and they display shades or
shadows in different ways in 3D mode.
One daytime scheme and one night scheme is always
selected for the map and for the menus. Clarion Mobile
Map uses them when it switches from day to night and
back.
GPS accuracy
Several factors have impact on the deviation between
your real position and the one given by the GPS
device. For example, signal delay in the ionosphere or
reflecting objects near the GPS device have a different
and varying impact on how accurately the GPS device
can calculate your position.
Map
Clarion Mobile Map works with digital maps which are
not simply the computerised versions of traditional
paper maps. Similarly to the paper road maps, the 2D
mode of digital maps show you streets, roads, and
elevation is also shown by colours.
In 3D mode, you can see the altitude differences, for
example valleys and mountains, elevated roads, and in
selected cities 3D landmarks and 3D buildings are also
displayed.
You can use digital maps interactively: you can zoom
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50 NX501E/NZ501E
in and out (increase or decrease the scale), you can tilt
them up and down, and rotate them left and right. In
GPS-supported navigation, digital maps facilitate route
planning.
Road Safety Camera
Special alert points for speed, red light or bus lane
cameras. Different data sources are available. You can
configure Clarion Mobile Map to warn you when you
approach one of these cameras.
Detecting the location of Road Safety Cameras
is prohibited in certain countries. It is the sole
responsibility of the driver to check whether this feature
can be used during the trip.
The software is capable of showing and warning
for more than just cameras. Various other types of
proximity alert points like school zones and railway
crossings are also available.
Route
A sequence of route events, i.e. manoeuvres (for
example, tur ns and roundabouts) to reach the
destination. The route contains one start point and one
or more destinations. The start point is the current (or
last known) position by default. If you need to see a
future route, the start point can be replaced with any
other given point.
Track-up map orientation
In Track-up mode the map is rotated so its top always
points in the current driving direction. This is the default
orientation in 3D map view mode.
Vehimarker
The current position is shown with a red arrow on the
map by default. The direction of the red arrow shows
the current heading. This position marker can be
replaced with different vehicle symbols. You can even
specify different Vehimarkers for different route types
(depending on which vehicle type is selected for route
calculation).