The transducer mounted to the hull of your vessel serves as both a "speak-
er" when transmitting, and as a "microphone" when the echo sound is re-
ceiving. Similar to the way a flashlight focuses light, most of the sound
from your transducer is focused downwards with a smaller amount going
out to the sides. The amount of focusing of the sound beam is expressed as
a "beamwidth".
4RANSDUCERBEAMWIDTH
Figur 3 - A representation of a transducer beamwidth.
Transducer
Approximation of the
sound pattern below the
transducer
This angle is the
transducers beamwidth
1/2 maximum
intensity
Maximum intensity
#%-+))%CHOSOUNDEROPERATION #HAPTER
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