Humminbird SOLIX Series Operation Manual page 186

MEGA DI+
MDI+ sonar beams point down and scan the water with razor-thin, high definition beams that are wide side to side, but very
thin from front to back. The beams can be operated at one of three display frequencies: MEGA+, 800 kHz, or 455 kHz.
MDI+ also includes (2D) Dual Spectrum CHIRP sonar.
45° 4 4 5 45° 45°
800kHz
75° 75° 75° 7 7 5
455kHz/
25˚
MEGA+
42˚
MEGA DI+ Cone Angles
(2D) Dual Spectrum CHIRP
Dual Spectrum CHIRP sonar provides conical coverage directly below the boat. The beam can be adjusted to show the full, narrow,
or wide frequency range. The sonar returns are displayed on the Sonar (2D) Views.
25˚
42˚
Dual Spectrum Cone Angles
MEGA Imaging
MEGA Side Imaging and MEGA Down Imaging transducers provide high frequency options, and includes either (2D) Dual Spectrum
CHIRP sonar or (2D) DualBeam PLUS sonar (see each table below for respective transducer models).
XM 14 20 MDI T
XTM 14 20 MDI T
Sonar Overview: MEGA Imaging+
MEGA+
800 kHz
455 kHz
Full
Narrow
Wide
MEGA Down Imaging Transducers with (2D) Dual Spectrum CHIRP
Select MEGA for the highest resolution, sharpness, and depth (up
to 200 ft).
Select 800 kHz as an alternative frequency with sharp returns (up
to 125 ft).
Select 455 kHz for deep water and overall coverage (up to 400 ft).
Select Full Beam (default) to use the complete frequency range.
Select Narrow Beam for increased bottom detail and better target
separation.
Select Wide Beam to maximize coverage and show big, clearly
defined fish arches.
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