14
Fish 4430/4431 Installation and Operation Manual
Note:
Times indicated are for illustration only.
1 minute ago
Now
Time
Stationary boat
When a boat is stationary, all bottom echoes will come from the same small
area of bottom. This will produce a flat bottom trace on the screen.
The appearance of the HISTORY and ZOOM screens can be
changed to suit individual preferences.
Select MAIN MENU - ZOOM to display the
ZOOM screen.
The ZOOM screen is split into two parts. On
the right is the full range section (just like the
HISTORY screen) and on the left is the zoom
section.
Full range section
Zoom section
Zoom bar
The full range section illustrated is 150 feet and
the zoom bar, located on the right edge of the
screen, shows the area that is enlarged in the
zoom section, in this case the section between
50 ft and 100 ft.
The zoom section shows the area of interest
(such as fish or features close to the bottom) in
greater detail than the HISTORY screen.
Bottom Lock
The zoom bar is normally locked to the bottom
(Bottom Lock) so that the bottom is always
displayed in the zoom section, regardless of
changes in depth.
To turn Bottom Lock off, press then move the
zoom bar to the desired position with or .
To turn Bottom Lock on, move the zoom bar
down until it touches the bottom and the
message “BOTTOM LOCK ON” briefly appears.
If Bottom Lock is off and the bottom rises
to meet the zoom bar, the zoom bar will
temporarily track the bottom. This condition
will cease when the depth exceeds the original
depth of the zoom bar.
Changing the Zoom
To increase magnification (make the zoom bar
smaller), press . To decrease magnification
(make the zoom bar bigger), press .
Alternatively, the zoom bar can be adjusted in
the HISTORY screen before switching to ZOOM.
3-4 ZOOM screen
