Sonar Overview - Humminbird ONIX Operating Manual

S O
ONAR VERVIEW
A functioning transducer must be attached to the control head or selected as the transducer source on the network to enable sonar
functions. To purchase transducers and black box sonar equipment, visit our Web site at humminbird.com.
DualBeam PLUS Sonar
The DualBeam PLUS sonar beams provide conical coverage directly below the boat. The beams on the transducer will use
83/200 kHz or 50/200 kHz, depending on the transducer model. DualBeam PLUS sonar returns are displayed on the Sonar (2D)
Views. The beams can be blended together, viewed separately, or compared side-by-side.
20˚
200kHz
60˚
83kHz
60 Degree Total Coverage
Bottom Coverage = 1 x Depth
NOTE: Depth capability is affected by such factors as boat speed, wave action, bottom hardness, water conditions, and transducer
installation.
The 83/200 kHz transducer uses the DualBeam PLUS sonar system with a wide (60°) area of
coverage. The transducer 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 83/200 kHz transducer can provide depth
coverage up to 1500 feet (500 m).
The 50/200 kHz transducer uses the DualBeam PLUS sonar system with a wide (74°) area of
coverage. The wide, 50 kHz beam transmits at a low frequency to provide greater depth
coverage, up to 5000 feet (1524 m). The narrow, 200 kHz center beam transmits at a high
frequency to provide maximum detail at shallower depths.
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Sonar Overview