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Sonar Overview
CHIRP Side Imaging Sonar (HELIX CHIRP SI GPS G2)
T
he CHIRP Side Imaging transducer allows you to operate the beams at different
frequency ranges. CHIRP sonar sends continuous sonar pulses at varying
frequencies to provide more detailed returns and better target separation. For
more frequency range information, see Set Up Sonar: Adjust 2D CHIRP
and
Adjust Imaging CHIRP.
The CHIRP Side Imaging transducer provides a wide yet precise survey of a large
area of water, including detailed bottom topography and fish-attracting structure
orientation.
Typically, the Side Imaging sonar (shown in blue) can search an area that is 480
feet wide (240 to each side), with a typical depth performance of 100 feet. See
the Side Imaging section for more information.
The CHIRP Side Imaging transducer also provides Down Imaging views on the
screen, with the same depth performance of 100 feet. See the Down Imaging
section for more information.
The DualBeam PLUS sonar beams (shown in magenta and yellow) provide conical
coverage directly below the boat. DualBeam PLUS sonar returns are displayed
on the traditional (2D) Sonar Views, and they will be used in the Side Imaging
View when an area directly under the boat does not have Side Imaging coverage.
The beams can be blended together, viewed separately, or compared side-by-
side.
86˚
455kHz
86˚
455kHz
2
00kHz
8
3kHz
20˚
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