Fishfinder 90/140 Owner’s Manual
17
Operating Your Fishfinder
Graphs
Fish ID—
sets how the Fishfinder shows underwater
targets and background information. If you select a
fish symbol, the screen shows only the information
related to that symbol (large, medium, and small sizes).
When using wide beam, fish symbols that are to the
sides of the boat appear hollow. Those that are directly
below the boat appear as solid black fish symbols.
(default)
the Fishfinder does not interpret the sonar
return data. Fish appear as arches
Suspended targets appear as symbols. No background
information appears
Same as previous with the target depth shown.
Suspended targets appear as symbols. Background
information appears, making the distinction between
fish and structure easier.
Same as previous with target depth shown.
Beam—
controls the angle of the transducer beam.
Wide
beam allows you to see more fish in shallow water, even off
the sides of the boat. You can also choose
Narrow
(default)
beam.
Whiteline—
sets how the Fishfinder shows information
about the bottom type.
•
Off
—the bottom return appears as solid black.
Whiteline Off
Whiteline On
•
On
(default)—the bottom return appears as a grayscale
pattern and can help to determine bottom hardness.
A hard bottom displays a thicker bottom layer. A soft
bottom appears as a thinner bottom layer.
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