PA G E 1 2
i n s t r u c t i o n m A n uA l
G • F i s H – G 1 4 2 F D
3-4-8 split zoom and Full screen zoom
split zoom:
split zoom mode expands selected area of the single frequency
by Vrm (Variable range mark). the left side displays zoomed
section of current sonar record. the Vrm of right side indicates
the zoom section area.
• Press or to change
the zoom range.
• Press
+
or
–
to change
the depth range.
Bottom lock
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.
• to turn Bottom lock on or off press
mENu.
Full screen zoom
select Full screen Zoom, highlight bottom lock and press
ENt
.
Full screen zoom displays only the zoom section of split zoom.
3-4-9 split bottom
split bottom display provides a normal picture on the right
half and a selectable range over and below the bottom line is
expanded onto the left half of
the screen. this mode is useful
for detecting bottom fishes.
• use the or keys to
adjust the zoom range.
• Press
+
or
–
to change
the range
• the Vrm moves up
and down to calculate
the bottom depth
automatically.
3-4-10 split 50/200
the 50 kHz display
appears on the left and
the 200 kHz appears
on the right. this dual
frequency display is very
useful for comparing the
same scanning with two
different frequencies.
3-4-11 split a-scope
this display shows echoes at each transmission with
amplitudes and colours proportional to their intensities; on the
right of the screen it is useful for estimating the kind of fish
schools and bottom nature.
1
Echoes from fish and the bottom
2
unwanted noise echoes.
3
the strongest echo, usually from the bottom.
1
2
3
Echo strength colour code
varies from weakest (blue)
to strongest (red).
