Bottom View; Zoom Level (Sonar Zoom View Only); Bottom Lock - Humminbird 727 Operation Manual

531425-1_D - 727 Man_English.qxd

Bottom View

Bottom View selects the method used to represent
bottom and structure on the display.
Inverse represents weak returns as dark pixels and strong returns as lighter pixels.
This has the benefit of ensuring that weak signals will be clearly visible on the display.
Structure ID® represents weak returns as light pixels and strong returns as dark
pixels. This has the benefit of ensuring that strong returns will be clearly visible on
the display.
WhiteLine® highlights the strongest sonar returns in white resulting in a distinctive
outline. This has the benefit of clearly defining the bottom on the display.
Bottom Black displays all pixels below the bottom contour as black, regardless of
signal strength. This has the benefit of providing a high contrast between the
bottom and other sonar returns on the display. Any targets such as fish, structure
and thermoclines will be shown using the Structure ID® method.
See Bottom Presentation for more information.
To adjust the Bottom View:
1. Highlight Bottom View on the Sonar X-Press
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Bottom View
setting. (Inverse, Structure ID®, WhiteLine®, Bottom Black, Default = Inverse)
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TM Menu.
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Zoom Level
(Sonar Zoom View only)
Zoom Level sets the magnification level for the Sonar Zoom View, and is only
available on the X-Press TM Menu when the Sonar Zoom View is active. Use Zoom to
increase the display resolution to separate sonar returns that are very close together.
To adjust the Zoom Level:
1. Highlight Zoom Level on the Sonar X-Press
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Zoom Level
setting for the Sonar Zoom View. (2x, 4x, 6x, 8x, Default = 2x)
NOTE: The Zoom Preview Box tracks the bottom and cannot be moved by the user.

Bottom Lock

(Sonar Zoom View only)
Bottom Lock changes the mode of the Zoomed view in the Sonar Zoom View.
To turn on Bottom Lock:
1. In the Sonar Zoom View, highlight Bottom Lock on the Sonar X-Press™ Menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Bottom Lock
setting to on. (Off, On, Default = Off)
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TM Menu.