Humminbird 531427-1_D - Manual (Page 68)

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Surface Clutter
(Advanced)
Surface Clutter adjusts the filter that removes surface clutter noise caused by algae and aeration.
The lower the setting, the less surface clutter will be displayed. The Surface Clutter menu choice
is available when User Mode is set to Advanced (see Setup Menu Tab: User Mode).
To change the Surface Clutter setting:
1. Make sure you are in Advanced User Mode, then highlight Surface Clutter on the Sonar main
menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Surface Clutter setting.
(Low = 1 to High = 10, Default = 5)
Surface
Clutter