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8 Glossary
The manual may contain many technical terms. Please look below for an explanation
if you are unfamiliar with some of them.
2D/3D GPS reception: The GPS receiver uses satellite signals to calculate its (your)
position. Depending on the current positions of the ever moving satellites in the sky,
and the objects in your environment, the signal that your GPS device receives may
be weaker or stronger. Your GPS needs strong signal from at least four satellites to
give a three dimensional position including elevation. If fewer satellites are available,
it may still be possible to calculate the position but the accuracy will be lower and the
GPS device will not calculate elevation. This is called 2D reception. N.I.C.E 430
shows the quality of reception on the Main menu (Page 16), the GPS Data screen
(Page 27) and both map screens (Page 34). Note that 2D and 3D GPS receptions
have nothing to do with the 2D and 3D display modes of the map. That is a way of
representing the map on the screen independently from the GPS reception.
Accuracy: The difference between your real position and the one given by the GPS
device is affected by several different factors. The GPS is capable of providing a
guess of its current error based on the number of satellites it can receive a signal
from, and their position in the sky. This information is shown in N.I.C.E 430 on the
GPS Data screen (Page 26). Use it as a general reference only. Note that several
other factors affect the real accuracy, some of which the GPS is incapable of
estimating (e.g. signal delay in the ionosphere, reflecting objects near the GPS
device, etc.).
Active route: A route is an itinerary planned to reach your chosen destinations. A
route is active when it is used for navigation. N.I.C.E 430 has only one route at a
time, and it is always active until you delete it, reach the final destination or exit
N.I.C.E 430. When there is more than one destination to reach, the route is cut into
different legs (from one via point to another). Only one of these legs can be active at
one particular time. The rest of them are unused and shown in a different color on
the map.
Automatic route planning (Autorouting): You only need to set up your destination,
and based on its map, the software will automatically figure out which roads you
need to take, and the turns you need to make to get there. N.I.C.E 430 will let you
select multiple destinations, and customize some important routing parameters
(Page 68).
Automatic route recalculation: If this function is enabled (Page 64), N.I.C.E 430
recalculates your route if you deviate from it. When you miss a turn or avoid a
roadblock, N.I.C.E 430 waits for a few seconds to be sure you do not follow the route
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