AvMap Geosat 4 TRAVEL Europe - Manual (Page 46)

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2. The automatic brightness control is a default
setting. Press the + button to deactivate it,
so that you can adjust it manually.
3. Adjust the display brightness with the right
or left arrow of the JOYSTICK. Press PAGE
to quickly vary the brightness.
It is possible to choose among auto brightness
and night vision in the second case, the Auto
night vision option is also activated. Select
the desired option and confirm by pressing
+.
The Auto night vision works thanks to the
brightness sensor positioned on the back of
rate of 9600 bps.
11.13 TMC
In this page it is possible to set the TMC
alarm radius to get warning messages about
the traffic events along the route.
TMC alarm radius: sets the distance within
which the TMC events are detected.
11.14 Brightness
To adjust the brightness:
1. Press and hold the PAGE button for 1
second. The Brightness window will
open.
• Radio Link: the serial port is set to
communicate with radio devices
• Geolink: the serial port is set to
communicate with external localization
devices.
• Proprietary: C-Map protocol.
Baud Rate
It sets the communication functionalities of
the serial port (marked TMC):
NMEA 4800: the external serial port is
programmed to communicate with a baud
rate of 4800 bps.
NMEA 9600: the external serial port is
programmed to communicate with a baud