Humminbird HELIX 9 Operation Manual page 65

Set the Upper/Lower Range
Upper Range and Lower Range control how much of the water column is displayed on the view. For example, if you are only interested
in the area between 20 and 50 feet deep, set the Upper Range to 20 and the Lower Range to 50. The view will not display sonar
returns outside of the set ranges, and greater detail for the selected range will be displayed.
1. Down Imaging X-Press Menu (Advanced User Mode): With a Down Imaging View displayed on-screen, press the MENU key
once.
2. Select Upper Range. Press the RIGHT or LEFT Cursor keys to adjust the setting.
3. Select Lower Range. Select Auto or set a specific depth (manual).
Auto: The Lower Range will be adjusted by the control head to follow the bottom automatically.
Manual : The control head locks onto the depth you select.
NOTE: There must be a difference of 10 feet between the upper and lower range settings.
Change the Chart Speed
Chart Speed controls how fast the sonar history moves across the view and how much detail is shown.
1. Down Imaging X-Press Menu: With a Down Imaging View displayed on-screen, press the MENU key once.
2. Select Chart Speed.
3. Press the RIGHT or LEFT Cursor keys to adjust the setting.
Change the DI Colors
The Down Imaging X-Press Menu allows you to quickly change the display palette while you fish. See Customize the Down Imaging
View: Change the View Colors for more information.
1. Down Imaging X-Press Menu: With a Down Imaging View displayed on-screen, press the MENU key once.
2. Select DI Colors.
3. Select a palette.
65 Down Imaging Sonar