update as you adjust each category. SI Enhance can also be used during Recording Playback (see Snapshot and RecordingView).

SI Enhance Submenu

•Sensitivity: Controls how much detail is shown on the display. When operating in very clear water or greater depths, increased sensitivity shows weaker returns that may be of interest. Decreasing the sensitivity eliminates the clutter from the display that is sometimes present in murky or muddy water. (1 to 20, where Low = 1, High = 20; Default = 10)

NOTE: The Sensitivity can be adjusted from the SI Enhance dialog box or the Side Imaging® X-Press™ Menu. The Sensitivity setting is provided here so that you can easily adjust the Side Imaging® data with the other settings. See Side Imaging® X-Press™ Menu: SI Sensitivityfor more information.

•Contrast: Accents the light and dark parts of the Side Imaging® data to provide greater definition. (1 to 20, Default = 10)

•Sharpness: Filters the view and sharpens the edges of the Side Imaging® data. (Low (L), Medium (M), High (H), Default = Off)

•Contour Mode: Controls how the water column is displayed in the Side Imaging® Views. In the normal display with the Contour Mode off, the water column is displayed on the view. The location of a target on the display is based on the slant range to the target.

When Contour Mode is turned on, the bottom is graphed at a constant point on the display, regardless of changes in depth. The Side Imaging® beams are divided by a vertical line. The water column is removed from the view, which allows the display to show targets at their linear horizontal distance. The location of a target may be easier to interpret when the water column is removed. (Off, On; Default = Off)

NOTE: If both SI Range Lines and Contour Mode are turned on, the SI Range Lines will remain on the display, but the individual range numbers are not available (see

Sonar Menu Tab: SI Range Lines).

101Side Imaging® X-Press™ Menu