The Window Display; Guard Alarm - Furuno FMD-811 Operator's Manual

1.14 The Window Display

The window display appears at the bottom
right (or left) 1/4 of the display. Two types
of window displays are available: zoom and
wide. Zoom doubles the size of the area se-
lected by the operator, and wide (range-up)
compresses and displays the entire radar pic-
ture on the next higher range.
Note: The zoom display does not function on
the 0.125 and 0.25 nm ranges.
Selecting the type of window display
1) Press the [MENU] key.
2) Select Mode & Function and press the
[ENT] key.
Note: When you place the circle cursor
behind the window display, the window
display shifts left (or right) so you may view
the circle cursor.
3) Select Window Display to Zoom or Wide
(range-up).
4) Press the [ENT] key followed by the
[MENU] key.
Selecting the area for the zoom picture
1) Press the [DISP MODE] key to select the
window display. The area selector is a
solid circle.
2) Press the cursor pad to place the circle
cursor (area selector) on the area to zoom.
3) Press the [ENT] key. The area selector
becomes a dashed circle and the cursor
can be moved indepedently.
To reselect area to zoom, press [ENT] or
[DISP MODE] and follow steps 2 and 3.
10
Area selector (1/4 or 1/3 of range)
Window
display
area
VRM EBL +CURSOR
**.** NM ***.*°R ***.**NM ***.*° R
(1) Press [DISP MODE]
to select the window
display.
Figure 1-11 How to select
the area to zoom

1.15 Guard Alarm

The guard alarm allows the operator to set
the desired range and bearing for a guard
zone. When ships, islands, landmasses, etc.
enter (or exit, depending on type of guard
zone in use.) the guard zone an audible alarm
sounds to call the operator's attention. The
alarm is very effective as an anticollision aid
when using an autopilot or navigating in
narrow channels.
CAUTION
The guard alarm is a useful anti-collision aid, but
does not relieve the operator of the responsibility
to also keep a visual lookout for possible
collision situations. The alarm should never be
used as the sole means for detecting possible
collision situations.
Selecting guard zone type
The guard alarm can be set to sound on tar-
gets entering (guard in) or exiting (guard out)
the guard zone. Select type of guard zone
as follows.
1) Press the [MENU] key to display the
menu.
2) Select Mode & Function and press the
[ENT] key.
VRM EBL +CURSOR
**.** NM ***.*°R ***.**NM ***.*° R
(2) Press cursor keys
to select area to zoom
and press [ENT].