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GPS operating principle
GPS operating principle
The Global Positioning System (GPS) was
developed by the American military in the
1970's.
GPS's rely on a total of 24 satellites that are
orbiting the earth and transmit signals. The
GPS receiver uses the time delay between
transmission and reception of these signals
to calculate its distance to the individual
satellites. It can then use this information to
calculate its current geographical position.
A GPS receiver needs to receive signals from
at least 3 satellites to be able to determine
its position. When it receives signals from
4 or more satellites, it is also able to
determine its level of elevation above sea
level. A GPS is capable of determining its
position accurately to within 3 metres.
GPS
route
guidance:
cartographic
material
geographic coordinates of the POIs, streets
and towns shown on the Lucca's screen.
The navigation system is therefore capable
of planning and calculating a route from
a particular starting point to a particular
destination.
When the Lucca receives signals from at
least 3 satellites, it is able to determine and
show its position on the map. This position
can then be used as the starting point for
planning a route. Since the Lucca checks its
position once every second, you can watch
your progress on the map.
38
Using the SD/MMC card
You can use SD/MMC cards with the Lucca
for the following:
•
•
•
SD-/MMC cards can have a capacity of up
to 4 GB and must be either formatted to
accept FAT 16 or FAT 32 fi le systems.
Preparation
You can either save fi les in a directory or
subdirectory. You can also save a range of
different format fi les in the same directory.
The
supplied
This is because the Music Player will only
includes
the
play audio fi les and ignore the image fi les,
and the Picture Viewer will only show image
fi les and ignore the audio fi les.
Inserting the SD/MMC card
The SD-/MMC card slot is located on the
Lucca's right side.
➜
Removing the SD/MMC card
➜
➜
To upload navigation data for other
countries
(Chapter
cartographic material")
Play audio fi les
(Chapter "Music Player")
View image fi les
(Chapter "Picture Viewer")
Audio Files
(Music Player)
MP3 fi les (ID3- Tags
version 1 and 2)
WMA
OGG
Push the SD-/MMC card into the slot as
indicated by the marking shown on the
slot until it engages.
Press the Back button to close the MP3
or Picture Viewer
Carefully press the SD-/MMC card into
the slot until it is released.
The SD/MMC card will now slightly
protrude from the slot. Remove the
card.
Using the SD/MMC card
("Uploading
Image Files
(Picture Viewer)
JPG
(max. 2.2 million pixel)
GIF
(max. 2.2 million Pixel)
BMP (max. 13 MB)
.
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