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How Sonar Works
Sonar technology is based on sound waves. The 300 Series™ Fishing System uses
sonar to locate and define structure, bottom contour and composition, as well as
depth directly below the transducer.
Your 300 Series™ Fishing System sends a sound wave signal and determines
distance by measuring the time between the transmission of the sound wave and
when the sound wave is reflected off of an object; it then uses the reflected signal
to interpret location, size, and composition of an object.
Sonar is very fast. A sound wave can travel from the surface to a depth of 240 ft
(70 m) and back again in less than 1/4 of a second. It isunlikely that your boat can
"outrun" this sonar signal.
SONAR is an acronym for SOund and
NAvigation Ranging. Sonar utilizes
precision sound pulses or "pings" which
are emittedintothe waterin ateardrop-
shaped beam.
The sound pulses "echo" back from
objects in the water such as the bottom,
fish and other submerged objects. The
returned echoes are displayed on the
LCD screen. Each time a new echo is
received, the old echoes are moved
acrosstheLCD,creatinga scrollingeffect.
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