FLIR RAYMARINE A98 - 15.3 Sonar overview and features

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
Dragony
DownVision
™
internal
Note: SideVision
™
cannot be used as a source
of depth data.
15.3 Sonar overview and features
The Sonar 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 sh. The Sonar module
interprets these signals and builds up a detailed
underwater view which is displayed in the Sonar
application.
The Sonar 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 sh 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
™
overview
SideVision™ technology • CHIRP SideVision™
overview
Sonar features
Supports multiple, active
sonar modules.
•
15.7 Multiple sonar
module support
Create custom channels. • 15.9 Custom channels
Sonar application panes. • Sonar application panes
Pausing and adjusting the
speed of the scrolling image.
•
15.14 Sonar scrolling
Using waypoints to mark
shing spots or target
locations.
• 15.19 Waypoints in the
Sonar application
Determining target depths
and distances.
• 15.18 Depth and distance
Setting Sonar alarms (sh,
depth or water temperature).
•
15.21 Fish alarms
Sonar display modes (Zoom,
A-Scope or Bottom Lock).
Note: The display modes
available are dependent on
the sonar channel / module
being displayed.
• 15.15 Sonar display
modes
Sonar (Fishnder) application
211