Raymarine Sonar Modules; Fishfinder Overview And Features - Raymarine a65 Operation Instructions Manual

15.2 Raymarine sonar modules

The depth shown below for DownVision
range for SideVision ™
achievable depths / ranges, depending on the
connected transducer in optimum water conditions.
The depths shown for Traditional and CHIRP sonar
modules are the maximum depths achievable
depending on connected transducer in optimum
water conditions.
Sonar module
CP100
CP200
CP300 / CP370
CP450C / CP470
CP570
a68 / a78 / a98 / a128 /
eS78 / eS98 / eS128
a67 / a77 / a97 / a127 /
c97 / c127 / e7D / e97
/ e127 / eS77 / eS97 /
eS127
DSM30 / DSM300
Dragonfly
Note: SideVision ™ cannot be used as a source
of depth data.
Fishfinder application
™ and the
sonar modules are typical
Technology / Description
DownVision ™ external
SideVision ™ external
Traditional (1 kW) external
CHIRP external
CHIRP external
DownVision ™ internal
Traditional (600 W) internal
Legacy external
DownVision ™ internal

15.3 Fishfinder overview and features

The Fishfinder application uses a sonar module
and a suitable sonar transducer. The sonar module
interprets signals from the transducer and builds
up a detailed underwater view. Various sonar
technologies are available, all of which work on the
same basic principles.
The sonar transducer sends pulses of sound waves
into the water and measures the time it takes for the
sound waves to travel to the bottom and back. The
returning echoes are affected by bottom structure
and by any other objects in their path, for example
reefs, wrecks, shoals or fish. The Sonar module
interprets these signals and builds up a detailed
underwater view which is displayed in the Fishfinder
application.
The Fishfinder application uses colors and shading
to indicate the strength of the returns. You can use
this information to determine the bottom structure,
the size of fish and other objects in the water, such
as debris or air bubbles
Note:
• Some transducers include additional sensors to
measure water temperature and/or speed.
• Not all Sonar modules can be used for a source
of depth information.
Sonar technology
Traditional sonar technology
CHIRP technology
DownVision™ technology
SideVision™ technology
Fishfinder features
Supports multiple, active
sonar modules.
Create custom channels.
Fishfinder application panes.
Pausing and adjusting the
speed of the scrolling image.
Using waypoints to mark
fishing spots or target
locations.
Determining target depths
and distances.
Setting Fishfinder alarms
(fish, depth or water
temperature).
• Traditional sonar
technology
• CHIRP technology
• CHIRP DownVision TM
overview
• CHIRP SideVision™
overview
• 15.5 Multiple sonar module
support
• 15.7 Custom channels
• Fishfinder application
panes
• 15.12 Fishfinder scrolling
• 15.17 Waypoints in the
Fishfinder application
• 15.16 Depth and distance
• 15.19 Fishfinder alarms
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