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Operation
Fishfinder Modes
Fishfinder modes are selectable for single frequency or dual and some functions, for example bottom
zoom or lock.
1.Normal (200KHz or 50KHz)
Bottom Zoom magnifies the Fishfinder display from the sea bottom toward the surface for a short
distance. The sea bottom contour is displayed and additional contour lines are added at intervals
above the sea bottom to aid in determining distances of echoes near the bottom. Use the Fishfinder
Menu to set the magnified Bottom Range from 2.5 to 20m (10 to 60ft.). Default setting is 10m (40ft.). If
the depth Range is set manually, the setting must place the sea bottom echo in the lower portion of the
screen for Bottom Zoom to be effective.
2. Bottom Zoom (200KHz or 50KHz)
Bottom Zoom magnifies the Fishfinder display from the sea bottom toward the surface for a short
distance. The sea bottom contour is displayed and additional contour lines are added at intervals
above the sea bottom to aid in determining distances of echoes near the bottom. Use the Fishfinder
Menu to set the magnified Bottom Range from 2.5 to 20m (10 to 60ft.). Default setting is 10m (40ft.). If
the depth Range is set manually, the setting must place the sea bottom echo in the lower portion of the
screen for Bottom Zoom to be effective.
