Simrad SU90 - GPS Telegrams; ITI and Trawl System Telegram

SimradSU90
TheSimradSU90softwarereadsanexternalspeedlogthroughaseriallineusingthe
NMEA0183standardforreceptionofthevesselspeed.Thesonaracceptsthefollowing
NMEAspeedtelegrams:
→VBWDualgroundandwaterspeedonpage238
→VTGCourseoverground&groundspeedonpage240
→RMCRecommendedminimumspecicGNSSdataonpage238
→VHWWaterspeedandheadingonpage239
TheRMCtelegramisnormallyprovidedbyothersourcesthanaspeedlog,butthis
telegramalsocontainsspeedinformation.Itisthereforesupportedbythesonar.
GPStelegrams
TheSimradSU90softwarereadspositioninformationfromanexternalGPSsensor
throughaseriallineusingtheNMEA0183standardforreceptionofthevesselspeed.
ThesystemwillassumethepositiontobereceivedinWGS84datum.Thesonaraccepts
thefollowingNMEApositiontelegrams:
→GGAGlobalpositioningsystemxdataonpage235
→GLLGeographicalpositionlatitude/longitudeonpage235
→RMCRecommendedminimumspecicGNSSdataonpage238
→ZDATimeanddateonpage240
TheZDAtelegramisalsosupported,ascertainGPSsystemsprovidethistimeanddate
information.Thesonardoesnotputthisinformationtouse.
ITIandtrawlsystemtelegram
TheeSimradSU90softwareinterfacestrawlsystemsthroughaseriallineusingstandard
NMEA0183telegramsaswellasproprietarytelegramsbasedontheNMEAstandard.
Intheproprietarytelegrams,theStartOfSentencedelimiter$isreplacedwith@.
Thefollowingtrawlsystemsaresupported:
•SimradITI
•SimradFS900
•SimradFS3300
NotethatothertelegramscanalsobesentfromanITI,sincetelegramscanberouted
throughthisequipment.
ITI
ThefollowingtelegramscanbereceivedfromtheSimradITIsystem.
→TPTTrawlpositiontruevesselonpage248
→TPCTrawlpositionincartesiancoordinatesonpage247
→GLLTrawlpositiononpage242
→DBSDepthoftrawlbelowsurfaceonpage242
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