Lowrance HDS Gen3 Touch, Operator'S Manual

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Bottom lock
The bottom lock mode is useful when you want to view echoes
close to the bottom. In this mode the left side of the panel shows an
image where the bottom is flattened. The range scale is changed to
measure from the seabed (0) and upwards. The bottom and the
zero line are always shown on the left image, independent of the
range scale. The scaling factor for the image on the left side of the
panel is adjusted as described for the Zoom option.
Flasher
The Flasher mode shows a flasher-style sonar view in the left panel
and a normal sonar view in the right panel.
Palettes
You can select between several display palettes optimized for a
variety of fishing conditions.
Temperature graph
The temperature graph is used to illustrate changes in water
temperature.
When toggled on, a colored line and temperature digits are shown
on the Sonar image.
Depth line
A depth line can be added to the bottom surface to make it easier
to distinguish the bottom from fish and structures.
Sonar | HDS Gen3 Operator Manual
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