Side Imaging Sonar; Dualbeam Plus™ Sonar - Humminbird 797C2 Operation Manual

Side Imaging Sonar

Your 700 Series™ Fishing System uses Side
Imaging sonar to provide a wide yet precise
survey of a large area of water, including detailed
bottom topography and fish-attracting structure
orientation. The Side Imaging transducer returns
are processed into an image similar to an aerial
photograph. Typically, the Side Imaging sonar
searches an area that is 360 feet wide to each
side, 720 feet total side coverage, with a depth
limitation of 150 feet. See What's on the Side
Imaging Display and Understanding Side
Imaging for more information.
DualBeam PLUS™ Sonar
Your 700 Series™ Fishing System uses a
200/83 kHz DualBeam PLUS™ sonar system with
a wide (60°) area of coverage. DualBeam PLUS™
sonar has a narrowly focused 20° center beam,
surrounded by a second beam of 60°, expanding
your coverage to an area equal to your depth.
In 20 feet of water, the wider beam covers an
area 20 feet wide. The 20° center beam is
focused on the bottom, to show you structure,
weeds and cover. The 60° wide beam is hunting
for fish in the wide coverage area. DualBeam
PLUS™ sonar returns can be blended together,
viewed separately or compared side-by-side.
DualBeam PLUS™ is ideal for a wide range of
conditions - from shallow to very deep water in
both fresh and salt water. Depth capability is
affected by such factors as boat speed, wave
action, bottom hardness, water conditions and
transducer installation.
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