Upper Range (Advanced: Sonar, Split Sonar, Big Digits And Circular Flasher Views Only) - Humminbird 747c Operation Manual

531526-1_A - 747c_&_777c2_Man_Eng.qxp
Upper Range sets the shallowest depth range that will be displayed on the
Sonar, Split Sonar, Big Digits and Circular Flasher 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, Big Digits
and Circular Flasher views. Upper Range is often used with Lower Range.
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.
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 1490 feet or 0 to 497 meters
[International Models only], Default = 0)
10/2/2006
Upper Range
(Advanced: Sonar, Split Sonar, Big Digits and
Circular Flasher Views only)
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