What's On The Sonar Display - Humminbird 1157c Combo Installating And Operation Manual

What's On the Sonar Display

The 1100 Series™ can display a variety of useful information about the area under and adjacent to your
Depth - water depth; can be set to alarm when the
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water becomes too shallow.
Temperature - water surface temperature
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Speed - if a Speed accessory or GPS Receiver is
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attached, the 1100 Series™ can display the speed
of the boat, and can keep a triplog of nautical or
statute miles traveled.
Course - the current direction the boat is traveling
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measured in degrees from North.
5 Voltage
Sonar Color Bar - color spectrum indicating low to
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high sonar intensity returns, where red indicates high
intensity and white indicates low intensity.
RTS® (Real Time Sonar) Window
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Thermoclines - layers of water with different
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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.
Bait Ball
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Second Sonar Return - when the sonar signal
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bounces between the bottom and the surface of the
water and back again. Use the appearance of the
second return to determine bottom hardness. Hard
bottoms will show a strong second return, while soft
bottoms will show a very weak one or none at all.
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