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Sensitivity set to manual mode (left). Sensitivity control bar (right).
To adjust sensitivity in Auto Mode:
1. Press MENU until the SENSITIVITY control bar appears. Press ↑ to increase
the sensitivity, ↓ to decrease it.
2. Press
PWR to clear the menu. If you reach the maximum or minimum
sensitivity level, a tone will sound.
To turn on Manual mode:
1. Repeatedly press Menu to display the Sensitivity menu. Highlight
MANUAL and press PWR to clear the menu.
Grayline
®
Grayline
®
helps you tell the difference between a hard and a soft bot-
tom by coloring weaker sonar returns (soft, muddy or weedy bottom)
with a narrow gray line or no gray line at all. A strong sonar return
(hard bottom) will be displayed as a wide gray line.