Eagle FishElite 640c Installation And Operation Instructions Manual page 55

The four Sonar Page display modes: Full Sonar Chart (left).
Split Zoom display mode (right).
Split Frequency mode (left) and Digital Data mode (right).
Digital data Surface clutter
Surface signal
overlay
(depth &
temperature)
Depth scale
Fish arches
Zoom bar
FasTrack
bar graph
Structure
Bottom signal
Full sonar chart mode.
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