Humminbird Matrix 20 - Manual (Page 28)

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Sonar X-Press TM Menu
The Sonar X-Press TM Menu provides access to the
settings most frequently-used. Press the MENU key
once while in any of the Sonar Views to access the
Sonar X-Press
TM Menu.
NOTE: Upper Range only appears in Advanced User
Mode when in Sonar, Split Sonar or Big Digits View.
NOTE: Zoom Level only appears in Sonar Zoom View.
Sensitivity
Sensitivity controls how much detail is shown on the
display. Increasing the sensitivity shows more sonar returns from small baitfish and
suspended debris in the water; however, the display may become too cluttered.
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. If
Sensitivity is adjusted too low, the display may not show many sonar returns that
could be fish.
Sensitivity at Low Sensitivity at Medium Sensitivity at High
Sonar X-Press TM Menu