Introduction
4
High Definition
Side Imaging
®
Sonar
(Side Imaging® models only
[898c HD SI and 998c HD SI only])
The
898c HD SI/998c HD SI Combo
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 can search an area that is 480 feet wide
(240 to each side), with a typical depth performance of 150 feet when the
Side Imaging® Sonar frequency is set for 455 kHz. The side beams can be
operated at one of two frequencies: 455 kHz or 800 kHz. Selecting 800 kHz
produces the sharpest image, but the search area to each side and the depth
capability are limited as compared to the 455 kHz frequency. See
What’s on
the Side Imaging® Display
and
Understanding Side Imaging®
for more
information.
The Side Imaging® transducer also provides down imaging displays on the
screen. See
What's on the Down Imaging™ Display
for more information.
Xtreme Depth Sonar
(Xtreme Depth Series™ models only [858c HD
XD and 958c HD XD])
The
858c HD XD/958c HD XD Combo
Fishing System
uses the XD transducer to
provide extreme depth coverage with
DualBeam PLUS™ technology.
The Xtreme Depth sonar beams can be
operated at two frequencies: 50 kHz (74°)
and 200 kHz (20°). The wide, 50 kHz beam
transmits at a low frequency to provide
greater depth coverage, up to 2500 ft (762
m). The narrow, 200 kHz center beam
transmits at a high frequency to provide
maximum detail at shallower depths.
The DualBeam PLUS™ technology allows
you to view the sonar returns blended
together, separately, or side-by-side (see
Sonar Menu Tab: Beam Select
and
Views
for more information).
Depth capability is affected by such factors as boat speed, wave action,
bottom hardness, water conditions, and transducer installation.
60°
83kHz
20°
200kHz
86°
455kHz
86°
455kHz
Содержание 858 HD DI
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