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Fishnder 160C Owner’s Manual 1
gettIng stArted > understAndIng the fIshfInder And sonAr
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Understanding the Fishnder and Sonar
The Fishnder 160C is a fully automatic, color sonar unit that allows
you to go out on the water and nd sh without having to congure a
lot of settings. However, you can customize each setting as you prefer.
If you have used a Fishnder before, you might already know how
to interpret the sonar information on the screen, so you can skip this
section. If you have not used a Fishnder before, you might want to
learn a bit about sonar: what it is, how it works, and what you might
see on the Fishnder 160C screen. This manual provides a general
understanding of those things that you need to know about sonar that
can help you interpret the screen and nd the sh.
Understanding Sonar
During installation, you connect your Fishnder 160C to a
transducer. The transducer uses sound to determine information
about what is in the water beneath your boat. Then the transducer
sends the information to your Fishnder to be shown on the screen
for you to view and interpret.
The transducer sends sound waves down into the water in a cone
shape, similar to a ashlight beam (covering a smaller circular area
at the top and angling out to a larger circular area at the bottom).
These sound waves reect off of any object that they hit, and then
the waves travel back up to the transducer. These objects could
be sh, branches, the bottom, or any other object that has density
that is different from the water. The transducer receives the sound
wave information, and then sends the information to the Fishnder.
The Fishnder shows the information on the screen for you to see
and interpret. The type of transducer and settings that you choose
determine how the information appears on the screen.
Understanding the Fishnder Screen
Experimentation and experience are the keys to successfully
interpreting your Fishnder screen. We recommend that you take
your Fishnder out on familiar water, and spend time learning to
interpret what you see on the Fishnder 160C screen.
Think of the Fishnder screen as if you took a picture from the side
of an aquarium in your home. You can see how deep a sh is in
the water (how close it is to the top or bottom), but you cannot tell
where the sh is located horizontally in the water (whether it is near
the front or the back of the aquarium). Remember this when you are
trying to locate exactly where something is in the water.
The strongest sonar returns appear on your screen as the most
intense solid red. The weaker returns appear as less intense, less
solid colors,with dark blue to black being the weakest.