Garmin Fishfinder 100 - Manual (Page 38)

30
On the Water
Understanding the Chart
Understanding the Chart
It is important to understand that the unit does not display a 3-D
representation of the underwater environment. The unit can display
multiple things at the same time, but can not determine where the return
originated only when it was received.
Example 2 provides a look at the underwater world from a top view,
and relates that view to what would be displayed on the chart. On the chart
it appears the fish and tree are side by side, but when we look at the scene
from the top we can see that the fish is several feet from the tree. It is
important to remember that the fishfinder can not determine where in the
coverage area the tree or fish are, only that the returns were received in the
same time frame.
Example 2.
Remember that the Fishfinder displays a 2D
picture of the underwater environment. The
fish and tree could be located anywhere in the
coverage area at that slice of time.
Branches
Fish
Enlarged
Transducer
View
Branches
Fish
Enlarged
Transducer
View
100 On the Water.p65 2/16/00, 10:08 AM 30