Geonav 7C Manuel D'emploi Et D'installation page 17

Functional Characteristics
Ground), as detected by the GPS receiver. Since the COG value
varies continuously, a filter has been inserted to prevent the
chart from bouncing.
The Chart Rotation function is enabled at a speed greater than
1 knot. To enable the Chart Rotation function, press GOTO,
select SETUP, then CHART ROTATION and ON. A message
will prompt the user to select the chart scale before activating
the chart rotation. Confirm by pressing ENTER.
The northern direction will be indicated by the symbol
Autozoom
With the Autozoom function the GEONAV will always display
automatically the boat's position and the target waypoint at
the best available chart scale. This function is enabled pro-
vided that at least one waypoint has been previously entered.
To enable the Autozoom function, press ZOOM+ until the
"AUTOZOOM ? ENTER = YES" message is displayed, then
confirm by pressing ENTER. To disable the Autozoom function,
press ZOOM.
When the GEONAV is turned on, and if at least one waypoint
has been previously entered, the Autozoom function will be
automatically enabled.
Screen Amplifier
This function automatically redraws the chart according to
the boat's course, so as to maintain 2/3rds of the screen ahead
English
30
of the boat, provided that the boat's speed is greater than 3
knots. This function will be enabled provided that no waypoint
has been previously entered.
EBL/VRM functions
The EBL (Electronic
Bearing
VRM (Variable Range
Marker) functions al-
low entering markers
and waypoints
range and bearing co-
ordinates with respect
to the current posi-
tion.
To enable these func-
tions, rotate the knob
to display the EBL, position the line on the bearing desired,
then press the knob to enable the VRM ring and adjust its size
by rotating the knob so as to reach the range desired. To edit
the values set, press the knob to switch from the VRM func-
tion to the EBL function.
To insert a waypoint where the EBL and VRM intersect, press
ENTER; to insert a marker, hold ENTER pressed.
Range and bearing values are displayed in the lower right-
hand side of the screen, together with the indication of the
function currently enabled.
Line) and
as
31
English