Humminbird 797c2 GPS Chartplotter Operation Manual page 29

531519-1_A - 797c2_Man_Eng.qxp
about the area under and adjacent to your boat, including the following items:
device is connected to the 700 Series™ Fishing System. If both devices are connected, then only the
11/6/2006 5:51 AM
High Sonar Intensity Return
Bait Ball
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.
83 kHz Blue Fish Symbol
Fish - the Fishing System 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.
200 kHz Orange Fish Symbol
Structure - where fish may be hiding.
RTS® (Real Time Sonar) Window
Low Sonar Intensity Return
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