Humminbird 531338-1_C Operation Manual page 11

about the area under and adjacent to your boat, including the following items:
be positioned in the Sonar View to provide
below the cursor.
on the display and the depth of the bottom
connected to the Matrix® Fishing System. If both devices are connected, then only the information from
Structure - where fish may be hiding.
Thermoclines - layers of water with different
temperatures that appear at different depths
and different times of the year. A thermocline
typically appears as a continuous band of
many gray levels moving across the display at
the same depth.
Fish ID+™ - A fish icon will be shown at the
derived position of the fish. Six fish icon styles
will be used to indicate the primary beam in
which the fish was found. Left-facing fish
indicate fish off the port side of the boat, while
right-facing fish indicate fish off the starboard
side. Each fish icon is available in three
different sizes. Larger fish icons are used to
represent stronger returns. The icons used in
the 2D Sonar View are identical to the icons
used in the 3D Sonar View.
RTS™ (Real Time Sonar) Window
Battery Voltage - the voltage of the boat's
battery; can be set to alarm if the voltage falls
below a certain point.
Soft Bottom
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