Humminbird HELIX 9 Operation Manual page 73

Adjust Sensitivity
Sensitivity controls how much detail is shown on the display and will adjust the sensitivity of all sonar frequencies. You can adjust
sensitivity from the X-Press Menu or the Enhance menu (see Enhance the Side Imaging View).
Decrease the sensitivity to eliminate the clutter from the display that is sometimes present in murky or muddy water. When
operating in very clear water or greater depths, increase the sensitivity to see weaker returns.
1. Side Imaging X-Press Menu: With a Side Imaging View displayed on-screen, press the MENU key once.
2. Select SI Sensitivity.
3. Press the RIGHT or LEFT Cursor keys to increase or decrease the sensitivity.
Enhance the Side Imaging View
The SI Enhance menu allows you to adjust the sensitivity, contrast, and sharpness on the Side Imaging View. As you adjust each
setting, the changes are displayed immediately on the view, so you can fine tune the display. You can also turn on/off the Contour
Mode from this menu so the water column is displayed or hidden on the view.
Enhance the Side Imaging View
1. Side Imaging X-Press Menu: With a Side Imaging View displayed on-screen, press the MENU key once.
2. Select SI Enhance. Press the RIGHT Cursor key.
3. Use the Cursor Control key to select each menu and adjust the setting.
Enhancing the Side Imaging View
73 Side Imaging Sonar