Garmin Fishfinder 140 Owner's Manual page 21

Graphs
Fish ID—sets how the Fishfinder displays underwater
targets and background information. If you select a fish
symbol, the screen displays 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.
OFF (default)—the Fishfinder displays all of the
available information about the underwater
environment.
—suspended targets appear as symbols. No
background information appears.
—the same as above with the target depth shown.
—suspended targets appear as symbols.
Background information appears, making fish
identification easier.
—the same as above with the target depth shown.
Fishfinder 90/140 Owner's Manual
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
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.
O Y F
PERATING OUR ISHFINDER
Whiteline On
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