Instruction manual

CVS-128 Chapter 1 Basic Operation
0093112802-00 1-5
Dual frequency
The High frequency image can be displayed in
the right half side and the Low frequency image
can be displayed in the left half side. Since the
beam width differs depending on frequency, the
schools of fish and sea bottom look different.
Zoom (Low frequency, High frequency)
A part of normal image can be zoomed. (1) [BTM.] (Bottom), (2) [B.D.] (Bottom Discrimination), (3)
[Zoom], (4) [B.Z.] (Bottom Zoom) and (5) [B.F.Z.] (Bottom Follow Zoom) are provided for zoom.
The unit is set to (1) [BTM.] at ex-factory. To change to other zoom display, set it in the menu. (See
[2.15 Selection of Zoom])
Zoom type Purpose Zoom start position
Zoomed range
Bottom It is convenient to see the
schools of fish near the
bottom.
It displays the position of
the bottom in the fixation
in the display bottom part.
It displays the bottom and
upper in the zoom.
Bottom
Discrimination
It is convenient to see the
schools of fish and a
bottom quality near the
bottom.
It displays the position of
the bottom in the fixation
in the position of 1/4
under the display.
It displays the bottom and
upper in the zoom, it
displays under the bottom in
the ordinary.
(Under the bottom, it doesn't
display in the zoom).
Zoom
It is convenient to see the
specified range in the
zoom.
It displays a zoom start
position in the fixation at
the top of the display.
It displays in the zoom from
the zoom start position to the
range you set.
Bottom Zoom It is convenient to see the
schools of fish near the
bottom and the form of
the bottom.
It displays the position of
the bottom in the position
which is the same as the
ordinary display.
It displays upper side of the
bottom in the zoom except
the bottom.
Bottom Follow
Zoom
It is convenient to see the
schools of fish near the
bottom and the form of
the bottom.
It always displays the
position of the bottom in
the lower part of the
display.
It displays the bottom and
upper and lower sides in the
zoom.
Low frequency image
High frequency image