Humminbird SOLIX Series Operation Manual page 162

Adjust the Color Gain Setting (Humminbird CHIRP Radar only)
Use Color Gain to adjust the contrast of the radar returns on the display.
1. With a Radar View displayed on-screen, tap Radar in the status bar.
OR
Press the MENU key.
2. Select Settings.
3. Select Color Gain.
4. Tap the Auto/M button to select Auto or Manual, or press the ENTER key.
Manual: If you select Manual, press and hold the slider, or press and hold the ENTER key, to adjust the setting.
Radar Options
Changing the Gain Setting Using the Rotary Dial
Select a Setting
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