TRACKFISH 6500
Installation and Operation Manual
41
NAVMAN
9-2 Sonar Zoom display
The display shows the sonar history on the
right and the zoomed section on the left.
The zoom bar on the far right shows the area
of the history that is magnified in the zoom
section:
•
Press
or
to adjust the zoom range
(the range of depths included in the zoom
section).
•
If
Bottom lock
is on, the zoom depth
(the depth of the zoom section) is adjusted
automatically so that the bottom is always
displayed in the zoom section.
If
Bottom lock
is off, press
or
to
manually adjust the the zoom depth. If
bottom lock is on it will turn off.
Bottom lock
To turn
Bottom lock
on or off:
1 Press
and select
Bottom lock
.
2 Select
On
or
Off
.
or If
Bottom lock
is
on
,
pressing
or
will turn it off.
9-3 Sonar Bottom display
The display shows the sonar history on the
right and the bottom signal as a flat trace in
the centre of the zoom section on the left. The
flat trace make it easy to compare the echo
strengths shown in the bottom signals. This can
help to identify the type of bottom and objects
close to the bottom.
The zoom bar on the far right shows the area
of the history that is magnified in the zoom
section:
• Use the
or
keys to adjust the zoom
range.
• The TRACKFISH calculates the zoom depth
automatically.
It is not necessary to turn Bottom lock on for
this display.
D
E
A Divider line
B Depth line marks the centre of the zoomed
area
C Zoom bar
D Zoom section
E Sonar history
A Zoomed bottom signal
B Sonar history
A
B
A
B
C
