Humminbird HELIX 5 G2 SERIES Operation Manual page 71

Select a Range of the Palette (Contrast)
Contrast allows you to choose a range of the Color Palette to display sonar returns. You can see a preview of the palette in the Color
Palette menu. For details, see Change the Sonar Colors Palette.
When Contrast is set to 20 (default), the entire palette is used to display weak and strong sonar returns. As you increase the
Contrast, the right range of the palette is used to display all sonar returns (whether weak or strong). As you decrease the Contrast,
the left range of the palette is used to display all sonar returns (whether weak or strong).
1. Circular Flasher X-Press Menu: With the Circular Flasher View displayed on-screen, press the MENU key once.
2. Select Contrast.
3. Press the RIGHT or LEFT Cursor keys to move the selection left or right on the palette.
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. Circular Flasher X-Press Menu: With the Circular Flasher 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.
Adjusting the Contrast
The low Contrast setting uses the left portion of the palette.
71 Circular Flasher