Bait
school
Sensitivity at 71 percent (left). Sensitivity at 100 percent (right).
To change the Grayline level:
1. Press
MENU
2. Press
to increase the level of Grayline or press
↑
you reach the maximum or minimum level, a tone will sound. Press
to clear the menu.
PWR
Thin or no Grayline
A small amount of Grayline indicates a soft bottom (left), probably
sand or mud. More Grayline indicates a harder, rocky bottom (right).
Chart Speed
The rate that echoes scroll across the screen is called the chart scroll
speed. The default for this unit is the maximum, 100 percent.
until the
G
RAYLINE
®
control bar appears.
26
Fish
arches
to decrease it. If
↓
Wider
Grayline
®