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Upper Range
(Advanced: Sonar, Split Sonar, Big Digits Views only)
Upper Range sets the shallowest depth range that will be displayed on the
Sonar, Split Sonar, and Big Digits Views. The Upper Range menu choice is
available when User Mode is set to Advanced (see Setup Menu Tab: User
Mode) and can only be accessed from the Sonar, Split Sonar, and Big Digits Views.
Upper Range is often used with Lower Range.
NOTE: A minimum distance of 10 feet will be maintained between the Upper and Lower
Range regardless of the manual settings entered.
To adjust the Upper Range:
1. Make sure you are in Advanced Mode, then highlight Upper Range on
the Sonar X-Press™ menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to increase or
decrease the Upper Range setting. (0 to 790 feet or 0 to 257 meters
[International Models only], Default = 0)
For example, if you are only interested in the area between 20 and 50
feet deep, you should set the Upper Depth Range to 20 and the Lower
Depth Range to 50. The Sonar View will then show the 30 foot area
between 20 and 50, and will not show the surface or the bottom
(assuming the bottom is deeper than 50 feet), and will show greater
detail for that area between 20 and 50 feet.