Volvo NAVIGATION SYSTEM (VNS) Operating Manual page 21

Main unit
The main unit contains a hard drive, a DVD
player (for navigation system map discs only)
and an integrated GPS (Global Positioning
System) receiver and a TMC (Traffic Message
Channel) receiver.
The main unit has the following functions:
•
Calculates the vehicle's current position
•
Calculates the route to the selected desti-
nation
•
Processes traffic information
•
Provides voice guidance
•
Stores map data
•
Uses the DVD player to update map data
and system software
GPS receiver
The navigation system uses GPS signals, the
vehicle's speedometer and a gyroscope to
determine the vehicle's current location and
direction.
Traffic information – TMC (option)
TMC is a standardized code system for trans-
mitting traffic information. The receiver auto-
matically tunes to the correct frequency and
reception is handled by the audio system's FM
antenna.
1 Not available in all markets.
01 Getting to know the navigation system
The area covered by the system is being stead-
ily expanded, which makes occasional
updates necessary, see page 13.
Regardless of whether the navigation system
is in Easy or Advanced mode, broadcast traf-
fic information is always received and presen-
ted. see page 66 for additional information.
Speakers
Sound from the navigation system comes
through the audio system's front speakers.
Navigation control
See page 24.
Screen
The screen displays the maps and provides
detailed information on intersections, dis-
tances, etc. See page 13 for information on
caring for the screen.
1
C70 system overview
IR port for the remote control
See page 24.
01
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