Simrad ST90 - Setting up the Input from a Motion Reference Unit (MRU)

340
442703/B
7Ifrelevant,addamanualvalueforthesensorinput.
8Atthebottomofthedialogbox,selectApplytosaveyoursettings.
9Repeatforeachsensorinterfacethatyouneedtosetup.
10ContinueyourworkintheInstallationdialogbox,orselectOKtocloseit.
Relatedtopics
Settingtoworksummary,page242
Settinguptheinterfacestoperipheraldevices,page328
Settinguptheinputfromamotionreferenceunit(MRU)
Theinformationfromamotionreferenceunit(MRU)(normallyheave,rollandpitch
information)isimportedintotheST90toincreasetheaccuracyoftheechodata.The
ST90isprovidedwithabuilt-inmotionsensor.ItisplacedinsidetheMotorControl
Unit.Forimprovedoperationalaccuracy,anexternalmotionreferenceunit(MRU)
maybeused.Thistaskisonlyapplicableisyouareusinganexternalmotionreference
unitonyourST90.
Prerequisites
Thisprocedureassumesthat:
•YouhaveavacantinterfaceportonyourProcessorUnit.
•YouarefamiliarwithNMEAandotherrelevantdatagramformats.
•Youknowhowtosetuptheparametersforserialandlocalareanetwork(LAN)
communication.
•Theinterfaceportissetupwiththecorrectcommunicationparameters.
•TheST90isturnedon,anditisworkingnormally.
•ThenewsensorisphysicallyconnectedtotheST90usingaserialornetworkcable.It
isswitchedonandinnormaloperation.
Neithertoolsnorinstrumentsarerequired.
Context
Amotionreferenceunit(MRU)measuresthevessel’spitchandrollmovementsinthe
sea.TheinformationprovidedbythemotionsensorisusedbytheST90tostabilizethe
beamsandtheechopresentation.
Note
Thistaskisonlyapplicableisyouareusinganexternalmotionreferenceunitonyour
ST90.
SimradST90InstallationManual