Raymarine e127 User Manual

19.2Sonartechnologies
Traditionalsonartechnology
Traditionalsonarusesasinglecarrierfrequencyor
carrierwaveforthesonarping.Thesonarworksby
measuringthetimeittakesthepingechotoreturnto
thetransducertodeterminetargetdepth.
D12600-2
CHIRPtechnology
CHIRPsonarsuseasweptfrequency'CHIRP'signal
whichcandistinguishbetweenmultipleclosetargets,
thisenablesthesonartodisplaymultipletargets
insteadoflargecombinedtargetsthatyouwouldsee
whenusingtraditionalnon-CHIRPsonar.
BenetsofCHIRPincludeimprovementstotarget
resolution,bottomdetectioneventhroughbaitballs
andthermoclinesanddetectionsensitivity.
D12601-2
CHIRPSonaroverview
CHIRPsonarproducesaconicalshapedbeam,the
coverageoftheconicalbeamisthewatercolumn
directlybeneaththevessel
Conicalbeam
D12784-2
Sonariseffectiveatarangeofspeeds.Indeeper
waterstheCHIRPbandwidthisautomatically
optimizedtoimprovebottomlockandthedetection
ofmovingobjects(e.g.sh)inthewiderwater
column.
CHIRPsonarscreenexample
CHIRPDownVision
TM
overview
DownVision
TM
producesawide–angleside-to-side
beamandathinfore-to-aftbeam.Thecoverageof
theDownVision
TM
beamisawatercolumndirectly
beneathandtothesidesofthevessel.
DownVision
TM
beam
D12777-2
264aSeries/cSeries/eSeries

Raymarine e127 Specifications

General

Display Size	12.1 inches
Display Resolution	1280 x 800 pixels
Touchscreen	Yes
Wi-Fi	Yes
Bluetooth	No
Chartplotter	Yes
Radar Compatible	Yes
AIS Compatible	Yes
Display Type	LCD
Waterproof Rating	IPX6
GPS	Yes
Networking	RayNet Ethernet
Sonar	Optional, requires external sonar module
Operating Voltage	12/24 V DC
Fishfinder	Yes, with optional sonar module
Cartography	Navionics, C-MAP
Power Supply	12/24V DC