EQ42/50/52 Principles of operation Chapter 8
43
8.2.1 Transducer beamwidth
The transducer mounted to the hull of your vessel serves as both a “speaker”
when transmitting, and as a “microphone” when the echosounder is receiving.
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”.
Transducer
Approximation of the
sound pattern below
the transducer
This angle is the
transducers beamwidth
½ maximum intensity
Maximum intensity
Figure 3 – A representation of a transducer beamwidth
<File: trdbeam.cdr>
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