
area under and adjacent to your boat, including the following items:
High Sonar Intensity Return 
Bait Ball
Fish - the Fishfinder displays fish as arches and/or fish icons, and can be set to alarm when a fish of a certain size is detected. When a target is detected, a Fish ID+™ symbol appears on the display with the depth displayed above it. The size of the symbol indicates 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.
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 colors moving across the display at the same depth.
200 kHz, Orange Fish Symbol
Structure - where fish may be hiding.
Battery Voltage - the voltage of the boat’s battery; can be set to alarm if the voltage falls below a certain point.
RTS (Real Time Sonar) Window™
Low Sonar Intensity Return
to the 500 Series™ Fishfinder.
5 | What’s On the Sonar Display |