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The default level of Grayline is usually adequate for most conditions.
Experiment with the unit to find the Grayline setting best for you.
To change the Grayline level, repeatedly press
MENU until the GRAYLINE
scroll bar appears. Press ↑ to increase Grayline, ↓ to decrease it. The ef-
fects of the Grayline adjustment will be shown by echoes on the screen.
If you reach the maximum or minimum level, a tone will sound. Press
PWR to clear the menu.
Chart Speed
The speed at which echoes scroll across the screen is called the chart
speed. The default for this unit is "max" (100 percent). We recommend
you leave the scroll speed setting there for most fishing conditions.
Chart Speed scroll bar.
You, however, might consider experimenting with chart speed when
you are stationary or drifting very slowly. Sometimes, you may achieve
better images as you decrease the chart speed to match the speed of
your boat.
If you are at anchor, ice fishing or fishing from a dock, experiment with
a chart speed of 25 percent. If you are drifting slowly, try a chart speed
of 50 percent. When you are stationary and a fish swims through the