What’s On the Display
The Humminbird® FishFinder can display a variety of useful information about the area | under and adjacent to your boat, including the following items: |
Depth - water depth; can be set to alarm when the water becomes too shallow.
Temperature - water surface temperature.
Timer - Elapsed time with Temp/Speed Accessory.
Distance - Distance traveled with Temp/Speed Accessory.
Average Speed - Average speed reading with 
Temp/Speed Accessory.
Second Sonar Return - when the sonar signal 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.
Speed - if a Temp/Speed accessory is attached, the FishFinder can display the speed of the boat, and can keep a Triplog of nautical or statute miles traveled.
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 gray levels moving across the display at the same depth.
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+TM 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
Battery Voltage - the voltage of the boat’s battery; can be set to alarm if the voltage falls below a certain point.
Low Sonar Intensity Return
2 | 3 |