Humminbird 757c User Manual

Page 19

out the

area under and adjacent to your boat, including the following items:

RTS® (Real Time Sonar) Window

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 colors
moving across the display at the same depth.

83 kHz Blue Fish Symbol

Bait Ball

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.

Low Sonar Intensity Return

High Sonar Intensity Return

her

device is connected to the 700 Series™ Fishing System. If both devices are connected, then only

200 kHz Orange Fish Symbol

531528-1_A - 757c_787c2_&_787c2i_Man_Eng.qxp 10/16/2006 10:41 AM Page 19