Upper Range
(Advanced: Sonar, Split Sonar, Big Digits and Circular Flasher Views only)
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.
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
TM
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)
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.
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Sensitivity
Sensitivity controls how much detail is shown on
the display and will adjust the sensitivity of all sonar frequencies. 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.
NOTE:The Sensitivity setting is a global setting and will adjust the sensitivity of all sonar
frequencies, as compared to specific sensitivity adjustments (such as 83 kHz Sensitivity,
455 kHz Balance or Wideside Sensitivity) which allow you to adjust the level of sensitivity
for one specific beam at a time.
To adjust the Sensitivity:
1. Highlight Sensitivity on the Sonar X-Press
TM
Menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to increase or decrease the
Sensitivity setting. (Low = 1, High = 20, Default = 10)
Sensitivity at Low Sensitivity at Medium Sensitivity at High
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