Raymarine RC520, Owner'S Handbook Manual

Page: 85 / 218

Chapter 3 Standard Radar Operations 71
4. If required, use the context-sensitive cursor to reposition other corners/sides
of the zone in turn, as described below.
➤
To place a guard zone when one is already displayed:
1. Press
ALARMS
to display the soft keys for guard zones.
ALARMS
D3791-2
GUARD 1
OFF ON
GUARD 2
OFF ON
The soft keys indicate the current status of the two guard zones.
2. Press the soft key for the guard zone you require, to toggle the setting
between
OFF
and
ON
.
The soft keys are cleared. If you turned a guard zone on, it is displayed in its
last-used position with one corner under cursor control.
3. If necessary, adjust the zone size and shape using the trackpad, and press
ENTER
to drop the corner in its new position. The display shows the zone
boundary as a short-dashed line (Zone 1) or a long-dashed line (Zone 2),
and the cursor returns to normal control.
4. If required, use the context-sensitive cursor to reposition other corners of
the zone in turn, as described below.
Moving, Reshaping or Deleting a Guard Zone
➤
You can move, reshape or delete an existing guard zone using the context-
sensitive cursor. To do so:
1. Move the cursor over the guard zone corner or side that you wish to control,
until the letters GRD are displayed.
2. If you wish to delete the whole zone, press
CLEAR
.
3. Alternatively, if you wish to move the corner or side, press
ENTER
to take
control of it. The zone boundary is displayed as a solid line, and the cursor
as a four-headed arrow.
4. Move the corner or side to the new position, as described on the previous
page.
Note: To convert a 360° guard zone back to a sector guard zone, take
control of any point on the circle, and move it to open up the circle.
5. Press ENTER again to drop the corner or side in its new position, or CLEAR
to abandon the operation and return it to its previous position.
The radar shows the zone boundary as a short-dashed line
(Zone 1) or a long-dashed line (Zone 2), and the cursor returns to normal
control.
6. If required, reposition the cursor and repeat steps 3 to 5 to move the other
corners or sides.
Moving, Reshaping
or Deleting a
Guard Zone