Humminbird 500 SERIES 580, Operation Manual

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and adjacent to your boat, including the following items:
depth on the display and the depth of the bottom directly below the cursor. In addition,
position is shown, the distance to travel to the cursor position and the bearing to the cursor position.
position for later retrieval and use.
RTS® (Real Time Sonar) Window
Soft Bottom
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 - fish are displayed as arches and/or fish
icons, and the unit can be set to alarm when a
fish of a certain size is detected. When a
target is detected and Fish ID+
TM is on, a Fish
ID+ TM symbol with depth is displayed. The size
of the symbol shows the intensity of the sonar
return. The unit will clearly show schools of
Bait Fish as "clouds" of different shapes and
sizes, depending on the number of fish and
boat speed.
200 kHz, Narrow Beam Shaded Fish Symbol
connected to the Fishfinder. If both devices are connected, then only the information from the GPS receiver
be positioned in the Sonar View to
depth below the cursor.
83 kHz, Wide Beam Hollow Fish Symbol
Structure - where fish may be hiding.