Gps Accuracy - Nextar q4 series Instruction Manual

One daytime scheme and one night scheme is always selected
for the map and for the menus. The software 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
The software works with digital maps which are not simply the
computerized 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 colors.
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 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.
North-up map orientation
In North-up mode the map is rotated so its top always faces
North. This is the orientation for example in Find on Map. See
also: Track-up map orientation.
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