Eagle Electronics 500C, 500CDF manual To adjust the Surface Clarity level

To turn on sonar and start the chart scrolling again, repeat the above step.

Sonar Menu with Stop Chart command selected. The box is unchecked,

indicating that the chart is scrolling across the screen.

Surface Clarity

The markings extending downward from the zero line on the chart are called surface clutter. These markings are caused by wave action, boat wakes, temperature inversion and more.

The surface clarity control reduces or eliminates surface clutter sig- nals from the display. It does this by changing the sensitivity of the receiver, decreasing it near the surface and gradually increasing it as the depth increases.

There are three levels of surface clarity available: low, medium, or high. It can also be turned off. The default level is off.

To adjust the Surface Clarity level:

1. From the Sonar Page, press MENU↓ to SONAR FEATURESENTENT.

Sonar Features menu with Surface Clarity selected (at left, dual-

frequency menu; at right, single-frequency menu).

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