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English
Functional Characteristics
Screen Amplifier
This function automatically re-
draws the chart according to the
boat’s course, to maintain 2/
3rds of the screen ahead of the
boat, provided that the boat’s
speed is greater than 3 knots.
This function will be activated
only if no waypoint has been
previously inserted.
Overzoom
The Overzoom function allows
the chart scale to expand any-
where up to 1/4 NM. The
Overzoom does not provide any
additional chart detail, but im-
proves only the readability of the existing information, thus
acting as a magnifying glass.
When the Overzoom is activated, the unit will warn the user
by replacing RANGE with OVZ (blinking) within the naviga-
tion window.
To activate or deactivate the Overzoom function, press GOTO to
display the menu bar, then select SETUP, OVERZOOM and
ON/OFF.
Position calibration
All position sensors have intrinsic errors that make the boat’s
position incorrect (from few meters to several hundred meters)
with respect to the background display of the chart.
This error is caused by the principle at the root of the satel-
lite-derived position system. The position calibration func-
tion allows correcting manually the position error present in
all GPS devices, provided that this error is not greater than 2
nautical miles.
Without screen amplifier
With screen amplifier
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