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Chapter 8: Using sonar
Chapter 8: Using sonar
8.1 Introduction
The hsb
boat, find fish and show the bottom of a lake or sea. The transducer sends high-
frequency sound waves down into the water; these sound waves strike fish, the
bottom or other objects in the water and are returned as echoes. The fishfinder
interprets these echoes to produce a visual representation of what is under your boat.
For technical information on Sonar refer to: Appendix C - Sonar.
8.2 What does the screen show me?
When you first view the sonar screen, a scrolling bottom graph is displayed. This is a
graphical representation of the echoes seen by the sounder module. As time passes
this image scrolls from right to left and becomes a record of the echoes seen. A typical
sonar picture is shown below:
Drop down menus
Toolbars
Status bar
Fish arches
Scrolling
bottom
display
Page
selection tabs
PC taskbar
2
series Fishfinder use sound waves (sonar) to show you what is under your
Title bar
Power
key
Softkeys
61
Pathfinder
panel
Depth
indicators
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