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EQ42/50/52 Principles of operation Chapter 8

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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Simrad EQ 55 Spezifikationen Seite 43