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.
To adjust the Sensitivity:
1. Highlight Sensitivity on the 2D Sonar
X-Press™ 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)
UPPER RANGE
(Advanced)
Upper Range
sets the shallowest depth range that will be displayed on the 2D Sonar
View, or 3D/2D Combo View when the 2D Sonar side is active. 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 2D Sonar View, or 3D/2D Combo View when
the 2D Sonar side is active. 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 2D
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 990 feet or 0 to 301 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.
Sensitivity at Low
Sensitivity at Medium
Sensitivity at High
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