Humminbird 798C GPS Receiver User Manual


 
10
Understanding the Side Imaging® Display
It is important to understand how Side Imaging® technology produces the
display. The images you see on the display are produced using sonar
technology. The special transducer projects three distinct beams one beam
facing down and two beams pointing out to the side. The “down beam” is
aimed directly below the boat and provides conical coverage. The “side beams”
are aimed at right angles to the path of the boat. The side beam coverage is
very thin from front to back, yet very wide top to bottom.
The narrow aspect (front to back) of the beam illuminates a small strip of the
bottom perpendicular to the direction of the boat. Each time the unit “pings,”
a strip of data representing all the echoes received by the transducer are put
together on the display to form the image that you see.
NOTE:Drawing shownfor illustration purposes only and may not meet technical specifications.
Down Beam - a cone
shaped beam that
pings directly below
the boat
Side Beams extend to
the right and left of
the transducer. The
side beams are very
thin front to back,
yet very wide top
to bottom.
What’s on the Side Imaging® Display