Raymarine Dragonfly 6 Installation And Operation Instructions Manual page 14

CHIRP DownVision screen example
™
CHIRP Sonar overview
CHIRP sonar produces a conical shaped beam, the
coverage of the conical beam is the water column
directly beneath the vessel
Conical beam
Sonar is effective at a range of speeds. In deeper
waters the CHIRP bandwidth is automatically
optimized to improve bottom lock and the detection
of moving objects (e.g. fish) in the wider water
column.
CHIRP sonar screen example
Dragonfly 6 / Dragonfly 7
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