Lowrance HDS-9 Gen3 Operators Manual US - Page 71
Bottom lock, Flasher, Palettes, Temperature graph, Depth line, variety of fishing conditions.
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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 71