Clarion NAX943DV, Руководство пользователя

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E-11
Read this chapter before using various functions / References for when you have problems
E
nglish
What is GPS (Global Posi-
tioning System)?
GPS is a position detecting system that uses
satellites deployed by the Pentagon. This
navigation system receives radio waves from
four or more different satellites which orbit
21,000 km above the earth in space, and
detects the position by utilizing the principle
of the triangulation. The degree of accuracy
may be changed intentionally by the Penta-
gon. In those cases, the system may not dis-
play the vehicle position correctly, even if the
situation is different from the items described
in “Driving environment which affects the
accuracy of the vehicle positioning”.
Confirmation of GPS recep-
tion condition
The GPS mark on the upper left corner
of the current location map screen shows the
accuracy of positioning.
NOTE
For approximately 3 or 4 minutes after start-
ing the system, the GPS mark remains grey,
even if accurate positioning is possible.
Confirming GPS reception condition
Select the [GPS Information] key to display
latitude, longitude, altitude, position detect-
ing condition and positions of satellites.
⇒
[Navigation]
⇒
[GPS Information]
•
The satellite with a strong signal will be
indicated in green.
•
Altitude will not be displayed when the
vehicle position is being detected by the
“2 dimension” calculation method.
→
Cause 2: There may be cases that the system does not display the sug-
gested route, even with the appropriate setting for route calculation,
because of the system limitations. The measure below may not be suc-
cessful in some cases. Refer to page E-31, “Notes on route guidance” and
understand the limitations of the system.
Measure: Set the ferry terminal or the street that you want to use as a
waypoint.
“Waypoint” E-24
Case 4 The direction or the route suggested by the route guidance or the voice
guidance is different from the actual roads.
→
Cause: The system may provide incorrect guidance for various reasons,
such as the map data used has not been updated, incorrect data is
included, the street was built after the creation of the map DVD-ROM, etc.
The information given by the navigation system is only a reference.
Always follow the actual traffic regulations when driving.
Refer to page E-31, “Notes on route guidance” and page E-33,
“Notes on voice guidance”.
Accuracy Colour of mark
Accurate Green
Not accurate Yellow
Positioning impossible Grey
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