Humminbird SOLIX Series Operation Manual page 239

Change Imaging+ Presets
(MEGA SI+ and DI+ models only)
Use one of the Imaging+ Presets to change your frequency for maximum detail or maximum coverage.
1. Press the HOME key.
2. Select Settings.
3. Select CHIRP Sonar.
4. DI+: Under DI CHIRP Frequency Spectrum, select one of the presets: Increased Detail, Increased Depth 1, Increased Depth 2.
SI+: Under SI CHIRP Frequency Spectrum, select one of the presets: Increased Detail, Increased Range 1, Increased Range 2.
239 Transducer Setup