Simrad ST90 - Verifying the Communication with the Motion Reference Unit (MRU)

442703/B
371
Verifyingthecommunicationwiththemotionreferenceunit
(MRU)
Theinformationfromamotionreferenceunit(MRU)(normallyheave,rollandpitch
information)isimportedintotheST90toincreasetheaccuracyoftheechodata.The
communicationwiththesensoristested.
Prerequisites
Thisprocedureassumesthat:
•ThesensorisconnectedtotheST90.Itisswitchedonandinnormaloperation.
•Theinterfaceportissetupwiththecorrectcommunicationparameters.
•YouarefamiliarwithNMEAandotherrelevantdatagramformats.
•Youknowhowtosetuptheparametersforserialandlocalareanetwork(LAN)
communication.
•Thevesselisberthedoratsea.
•Allrelevantvesseldrawings,installationreportsand/ormeasurementresultsare
available.
•TheST90isturnedon,anditisworkingnormally.
Neithertoolsnorinstrumentsarerequired.
Context
Amotionreferenceunit(MRU)measuresthevessel’spitchandrollmovementsinthe
sea.TheinformationprovidedbythemotionsensorisusedbytheST90tostabilizethe
beamsandtheechopresentation.
Procedure
1OpentheSetupmenu.
2OntheSetupmenu,selectInstallation.
ObservethattheInstallationdialogboxopens.Thisdialogboxcontainsanumber
ofpagesselectedfromthemenuontheleftside.
3OntheleftsideoftheInstallationdialogbox,selectMotionReferenceUnit.
aIfyouusethemotionsensorintheMotorControlUnitonthehullunit,make
surethatLANisselected.
Thesensorusesalocalareanetwork(LAN)portonyourProcessorUnit.A
messageonthepageveriesthatitisconnectedtotheST90beamformer
application.
bIfyouuseanexternalmotionreferenceunit(MRU),makesurethataCOM
portisselected,andthatthecorrectparametersareprovided.
Settingtowork