Simrad EQ 55 Spécifications télécharger pdf (Page 28)

The center of the sound beam is the most intense, then as you move out

towards the sides of the sound beam there is a point where the intensity

of the sound is 1/2 what it was in the center. The distance moved is the

"beamwidth". See Figure 3

The beamwidth is related to the actual frequency and transducer. The

EQ32 MKII 200 kHz will have a 15° beamwidth, and the 50 kHz version

will have a 45° beamwidth.

%FFECTSOFTHEVESSEL SSPEED

The display of fish on the EQ32 MKII depends directly on the vessel’s

speed, as well as on the depth of the fish. When the vessel is at rest, the

echo traces will appear stretched and flattened. As the vessel’s speed be-

comes greater, the echo traces will become shorter and more arched. The

reason for this change in appearance is that as the vessel speed increases

fewer number of sound "pings" strike each fish. A low vessel speed will

provide the most accurate information of where fish are located.

#HAPTER 0RINCIPLESOFOPERATIONOFANECHOSOUNDER

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Simrad EQ 55 Spécifications Page 28