Understanding the Sonar Display

It is im portant to understand the significance of the display. The d isplay d oes n ot sh ow a literal 3-dimensional representation of wh at is under the water. Each vertical band of data received by the c ontrol he ad a nd plo tted o n the d isplay represents something t hat was detected by a sonar return at a particular time. As both the boat and the targets (fish) may be moving, the returns are o nly sh owing a p articular s egment of time when o bjects w ere detec ted, n ot exactly where those o bjects a re in r elation to o ther objects shown on the display.

The returned sonar echoes ar e displa yed on the screen. As a new ec ho is received, the historical data scrolls left across the view.

Real Time Sonar (RTS™) Window

A Real Time Sonar (RTS™) Window appears on the right side of the display in the Sonar View only. The RTS Window™ updates at the fastest rate possible for depth conditions and shows only the returns from the bottom, structure, and fish that are within the transducer beam . The RTS Wind ow™ plots the depth and intensity of a sonar return (see Sonar Menu Tab: RTS Window™).

The Narrow RTS Window™ indicates the sonar intensity through the use of grayscale. The g rayscale used ma tches the Bottom View grays cale setting (Inverse, StructureID®, WhiteLine™, Bo ttom Blac k). The depth of the sonar return is indicated by t he ver tical placement of the return on the display depth scale.

The Wide R TS W indow™ indicates t he so nar i ntensity through the u se of a ba r graph. The length of the plotted r eturn indicates whether the return is weakor strong. The depth of the sonar return is in dicated by th e vertical p lacement of th e return o n the d isplay d epth

scale. The Wide RT

S

Window™ does n ot us

e

grayscale.

 

What’s On the Sonar Display

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