Raymarine A65, Operation Instructions Manual

Page: 203 / 390

15.2 Raymarine sonar modules
The depth shown below for DownVision ™ and the
range for SideVision ™ sonar modules are typical
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 Technology / Description
CP100 DownVision ™ external
CP200 SideVision ™ external
CP300 / CP370 Traditional (1 kW) external
CP450C / CP470 CHIRP external
CP570 CHIRP external
a68 / a78 / a98 / a128 /
eS78 / eS98 / eS128 DownVision ™ internal
a67 / a77 / a97 / a127 /
c97 / c127 / e7D / e97
/ e127 / eS77 / eS97 /
eS127 Traditional (600 W) internal
DSM30 / DSM300 Legacy external
Dragonfly DownVision ™ internal
Note: SideVision ™ cannot be used as a source
of depth data.
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 • Traditional sonar
technology
CHIRP technology • CHIRP technology
DownVision™ technology • CHIRP DownVision TM
overview
SideVision™ technology • CHIRP SideVision™
overview
Fishfinder features
Supports multiple, active
sonar modules.
• 15.5 Multiple sonar module
support
Create custom channels. • 15.7 Custom channels
Fishfinder application panes. • Fishfinder application
panes
Pausing and adjusting the
speed of the scrolling image.
• 15.12 Fishfinder scrolling
Using waypoints to mark
fishing spots or target
locations. • 15.17 Waypoints in the
Fishfinder application
Determining target depths
and distances. • 15.16 Depth and distance
Setting Fishfinder alarms
(fish, depth or water
temperature). • 15.19 Fishfinder alarms
Fishfinder application
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