Geonav 4c Bedienungsanleitung Und Installationshinweise Seite 15

Functional Characteristics
cally the boat's position and the target waypoint at the best
To activate the Autozoom function, press ZOOM+ until the
"AUTOZOOM ? ENTER = YES" message is displayed.
To deactivate the Autozoom function, press the ZOOM key once.
When the GEONAV is turned on, and if at least one waypoint
has been previously entered, the Autozoom function is auto-
matically activated.
Screen Amplifier
This function automatically redraws 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 act-
ing as a magnifying glass.
When the Overzoom is activated,
the unit will warn the user by
English
available chart range. As the boat
approaches the target waypoint,
the unit will automatically zoom
in. Once the waypoint is passed,
the unit will select the best range
to display the boat's position and
the following waypoint.
Without screen amplifier
With screen amplifier
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replacing RANGE with OVZ (blinking) within the navigation
window.
To activate / deactivate the Overzoom function, press PAGE un-
til the menu bar is displayed, then select SETUP, OVERZOOM
and ON / OFF.
Position calibration
Most 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 allows the user to manually correct
the position error present in all GPS. Press PAGE until the
menu bar is displayed, select SETUP, CALIBRATION and then
O N .
A message will prompt the user to move the cursor to the boat's
true position by using the CURSOR key. Press ENTER to move
the GPS boat's position to the point indicated by the cursor.
This operation will save the calibration for use in future cal-
culations.
NOTE: When the calibration is activated, the coordinates will be marked by (*).
To cancel calibration, press PAGE until the menu bar is dis-
played, select SETUP, CALIBRATION and then OFF.
Local time
By this function the user can enter local time instead of the
Greenwich time (GMT) supplied by the GPS receiver.
To enter local time, press PAGE until the menu bar is dis-
played, select SETUP, SET TIME and then LOCAL.
A window will allow entering local time by using the CURSOR
key. Press ENTER to confirm the operation.
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English