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High Definition Side Imaging Sonar
(1197c SI Combo models only)
Your 1100 Series™ 1197c SI Combo 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 720 feet wide (360 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.
DualBeam PLUS™ Sonar
Your 1100 Series™ Fishing System uses a 200/83 kHz DualBeam
PLUS™ sonar system with a wide (60°) area of coverage. DualBeam
PLUS™ sonar 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 20° center beam is focused on the bottom,
to show you structure, weeds and cover. The 60° wide beam is
hunting for fish in the wide coverage area. DualBeam PLUS™ sonar
returns can be blended together, viewed separately or compared
side-by-side. DualBeam PLUS™ is ideal for a wide range of
conditions - from shallow to very deep water in both fresh and salt
water. Depth capability is affected by such factors as boat speed,
wave action, bottom hardness, water conditions and transducer
installation.
60° Total Coverage
Bottom Coverage
=
1 x Depth
20°
200 kHz
60°
83 kHz
60°
83 kHz
20°
200 kHz
86°
455 kHz
86°
455 kHz
180° Total Coverage
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