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User’s manual NAVIGON 3100 | 3110
Before you begin - 7 -
2.2 Navigation with GPS
GPS is based on a total of 24 satellites that circle the earth and, in
doing so, are constantly transmitting their position and the current time.
The GPS receiver receives this data and calculates its own
geographical position on the basis of the information broadcast by the
various satellites.
For a sufficiently precise positioning it is necessary to obtain the data
from at least three satellites. With the data from 4 or more satellites the
altitude above sea level can also be ascertained. The determination has
an accuracy of about 3 yards.
Once
MobileNavigator has determined your position, this position can
be used as a starting point for a route calculation.
The map data on your navigation device includes the geographical
coordinates of all digitally recorded points of interest, streets and
places. From this the server can calculate a route from any given
starting point to a destination.
The calculation of the current position and its representation on the map
takes place once every second. So your current position is always
shown on the map.
2.3 Important safety information
In your own interest, read the following notices and safety information
carefully before starting up your navigation system.
2.3.1 Navigation safety information
The usage of the navigation system is at your own risk.
Caution! To prevent accidents, do not program the navigation system
while driving.
Caution! Do not look at the display unless it is absolutely safe to do so!
Caution! Traffic regulations have priority over any instructions from the
navigation system.
Caution! Only follow the instructions of the navigation system when the
circumstances and the road traffic regulations allow doing so. The
navigation system will guide you to your destination even if you deviate
from your calculated route.