Raymarine Dragonfly-4 - Page 123

Sonar/DownVision
™
specication
Thefollowingspecicationonlyappliesto
DownVision
™
products.
Channels2xCHIRP(1xtraditionalsonarand1x
DownVision
™
)
Beam
coverage
•Sonar—conicalbeam.
•DownVision
™
—Wide(port/starboard)
andthin(fore/aft)fanbeam.
Depthrange
0.6M(2ft)to183m(600ft).Dependingon
waterconditions,theSonarchannelmaybe
abletoachieveincreaseddepthrangeover
theDownVision
™
channel.
Note:TheDVandWi-Fish
TM
variantsaresingle
channelDownVision
™
onlyproducts.
InternalGNSS(GPS/GLONASS)receiver
specication
Channels
72
Coldstart
<2minutes
ReceiverIC
Sensitivity
–167dBm(Tracking)/–148dBm
(Acquisition)
GNSS
compatibility
•GPS
•GLONASS
SBAS
compatibility
•WAAS
•EGNOS
•MSAS
SpecialfeaturesActiveJammingandInterference
Reduction
Operating
frequency
•GPSL1C/A
•GLONASSL10F
SignalAcquisition
Automatic
AlmanacUpdateAutomatic
GeodeticDatumWGS-84(alternativesavailable
throughGPSSetupoptions)
RefreshRate10Hz(10timespersecondConcurrent
GNSS)
Antenna
•Internal—Ceramicchipmounted
neartopofunit
PositionAccuracy
•WithoutSBAS:<=15metres95%
ofthetime
•WithSBAS:<=5metres95%ofthe
time
Technicalspecication
123