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Viewing Sonar History
You can scroll the sonar display to view historical sonar data.
NOTE: Not all transducers save historical sonar data.
1 From a sonar view, hold to scroll through the history.
2 Select BACK to exit history.
Adjusting the Level of Detail
You can control the level of detail and noise shown on the sonar screen either by adjusting the gain for
traditional transducers or by adjusting the brightness for Garmin ClearVü transducers.
If you want to see the highest intensity signal returns on the screen, you can lower the gain or brightness to
remove lower intensity returns and noise. If you want to see all return information, you can increase the gain or
brightness to see more information on the screen. This also increases noise, and can make it more difficult to
recognize actual returns.
1 From a sonar view, select MENU.
2 Select Gain or Brightness.
3 Select an option:
• To increase or decrease the gain or brightness manually, select Up or Down.
• To allow the chartplotter to adjust the gain or brightness automatically, select an automatic option.
Adjusting the Color Intensity
You can adjust the intensity of colors and highlight areas of interest on the sonar screen by adjusting the color
gain for traditional transducers or the contrast for some transducers. This setting works best after you have
adjusted the level of detail shown on the screen using the gain or brightness settings.
If you want to highlight smaller fish targets or create a higher intensity display of a target, you can increase
the color gain or contrast setting. This causes a loss in the differentiation of the high intensity returns at the
bottom. If you want to reduce the intensity of the return, you can reduce the color gain or contrast.
1 From a sonar view, select MENU.
2 Select an option based on sonar view:
• Select Contrast.
• Select Sonar Setup > Appearance > Color Gain.
3 Select an option:
• To increase or decrease the color intensity manually, select Up or Down.
• To use the default setting, select Default.
44 Sonar Fishfinder
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