Eagle Electronics 480, 480DF Fish Finder User Manual


 
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clines – are also emphasized. This can make it hard to distinguish fish
signals inside thermoclines or other cover.
In FishReveal mode, the weakest echoes are white and the strongest
echoes are black. Echoes in between vary in gray in proportion to their
signal strength. The Grayline control determines the range for black to
white. Also note that when using FishReveal, we recommend that you
turn off Auto Sensitivity and turn up Sensitivity to near maximum.
Sonar Color Mode command with FishReveal selected
(at left, dual-frequency menu; at right, single-frequency menu).
To turn FishReveal on:
1. From the Sonar Page, press
MENU| to SONAR FEATURES|ENT.
2. Press |then press to
SONAR CHART MODE|ENT| to FISHREVEAL|ENT.
3. Press
EXIT| to AUTO SENSITIVITY|ENT| to SENSITIVITY|ENT.
4. Press until the Sensitivity Control Bar reads 100% (or close to it),
then press
EXIT. (If you reach the maximum limit, a tone sounds.)
Sonar chart in regular grayscale mode, left, and in FishReveal mode,
right. Notice how shallow fish formerly hidden in the surface clutter
become visible in FishReveal mode.
Visible
fish
Fish
not
visible
Fish
arch
Fish
arches