Lowrance HDS-9 Gen3 Operators Manual US - Page 66

Preset range levels Allows for the selection of a specific depth range that is not tied to the depth of the water. Custom range This option allows you to manually set both upper and lower range limits. Ú Note: Setting a custom range puts the sonar in manual mode. If the bottom is well beyond the lower range set, you may lose digital depth. Sonar frequency The HDS Gen3 unit supports several transducer frequencies. Available frequencies depend on the transducer model that is connected. You can view two frequencies at the same time by selecting dual Sonar panels from the Home page. Sensitivity Increasing Sensitivity shows more detail on the screen. Decreasing Sensitivity displays less. Too much detail clutters the screen. Conversely, desired echoes may not be displayed if Sensitivity is set too low. Ú Note: Auto Sensitivity is the preferred mode for most conditions. Auto sensitivity Auto sensitivity automatically adjusts the sonar return to the optimal levels. Auto sensitivity can be adjusted (+/-) to your preference while still maintaining the auto sensitivity functionality. Colorline Allows the user to adjust the colors of the display to help differentiate softer targets from harder ones. Adjusting the Colorline can help separate fish and important structures on or near the bottom from the actual bottom. 66 Sonar | HDS Gen3 Operator Manual