V7 NAV740, Руководство пользователя

Страница: 24 / 86

4.2.2 GPS connection indicator
In the bottom left corner of the screen there is a lamp, which has more colors and
represents more values:
•
a blinking green lamp means that there is communication with the GPS and
data is being received,
•
other colors may not appear with a built-in GPS. Should any of
these appear, this means a faulty operation of your device.
4.2.3 GPS data quality indicator
In the top left corner there is a satellite dish to show the quality of the GPS position.
Different icons represent different signal quality:
•
red dish with a cross means there is no connection with the GPS device.
•
white dish without arcs means the GPS is connected but no GPS position is
available,
•
one arc means 2D reception. A GPS position has been acquired, V7 Navigation is
ready for navigation, but the GPS is using enough satellites for calculating the
horizontal position only. Elevation data is not provided, and the position error may
be significant.
•
two arcs means 3D reception. The GPS receiver has enough satellites to
calculate altitude. Position is generally correct (yet it can still be inaccurate due to
different environmental factors). V7 Navigation is ready for navigation.
4.3 The map screen
Having explained the contents of the map, the description of the other parts of the
map screen follows.
There are several controls that are described on the following pages.
24