Grayline
Grayline lets you distinguish between strong and weak echoes. It paints gray on targets that are stronger than a preset value. This al- lows you to tell the difference between a hard and soft bottom. For ex- ample, a soft, muddy or weedy bottom returns a weaker signal, which is shown with a narrow gray line or no gray line at all. A hard bottom re- turns a strong signal, which causes a wide gray line.
If you have two signals of equal size, one with gray and the other with- out, then the target with gray is the stronger signal. This helps distin- guish weeds from trees on the bottom, or fish from structure.
Grayline is adjustable. Experiment with your unit to find the Grayline setting that's best for you.
Sonar Page menu with GrayLine command selected (left).
The GrayLine control bar (right).
To adjust the Grayline level:
1.From the Sonar Page, press MENU↓ to GRAYLINEENT.
2.The Grayline Control Bar appears. Press ↓ to decrease Grayline. Press ↑ to increase Grayline.
3.When it's set at the desired level, press EXIT.
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