35
Sonar Overview
Down Imaging Sonar (HELIX DI G2, HELIX CHIRP DI GPS G2)
T
he Down Imaging transducer scans the water with razor-thin, high-definition
beams. The beams are wide (side to side) but very thin front to back.
The Down Imaging beams (shown in green) can be operated at two frequencies:
455 kHz (75°) or 800 kHz (45°). Select 455 kHz for the best overall image quality
and depth. Select 800 kHz for the sharpest image. See Set up Sonar for more
information.
The transducer also uses conical beams to provide data in traditional 2D format
(shown in magenta and yellow). Select 455 kHz for a narrowly focused 16° center
beam, or select 200 kHz for a wider 28° beam (see Set up Sonar and Understand
the Sonar Views).
HELIX CHIRP DI GPS G2:
If your transducer is also a CHIRP transducer, you can
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.
16°
75°
28°
455kHz
200kHz
455kHz
4
5°
800kHz
75 Degree Total Coverage
200kHz
16°
28°
455kHz
75 Degree Total Coverage
To Next Page
Loading...
Need help?
General
