
RSAquaLtd.46HurstBarns,Privett,Alton,Hampshire,GU343PL
Tel:+44(0)1730828222Fax:+44(0)1730828128Email:waveradar@rsaqua.co.ukWeb:www.rsaqua.co.uk
E4.IfWaveViewsoftwareisnotused,whatisthedocumentationofthehardwareand
softwareprotocol?
A:ThemessagefromWaveRadarRexisafixedlengthstringofbinaryvaluesthatmainly
containsaddressandcommandcodes,bytecounter,distancemeasurementofvaluesin
1/10mmsteps,radarstatus,otherbyteallocateddataplusatwobyteCRCchecksum
sequence.TheoutputfromtheFBMisRS232withabaudrateof4800,8databits,noparity
and1stopbit.AfulldescriptionisgivenintheWaveRadarRexOperatingManual.
E5.IsadataoutputavailablefromWaveView?
A:Yes.AnASCIIserialdatastreamoutputisprovidedforremoteapplications.Thisone
lineofdatacomprisesadateandtimestamp,rawdistance(Range),waterlevel(Tide),
significantwaveheight(Hs),meanzerocrossingpoint(Tz),maximumwaveheight(Hmax),
maximumwavecrestheight(HCrest),crestperiod(TC)andpeakwaveperiod(TP). Itis
availablefromthePCsecondCOMportandisupdatedeveryminute.
E6.CanadatumoffsetbeinputtoWaveView?
A.Yes.Adatumoffsetcanbeenteredbytheuserviatheonscreendisplaycontrols.
E7.IstherawdistancemeasurementstoredbyWaveView?
A:Rawdataintheformofdistancemeasurements,withnooffsetforradardatum
positioningandradarstatusdatafromtheWaveRadar,arestoredinafilecreatedhourly.
Controlofstorageisoperatorselected.
E8.HowdoesWaveViewcalculatetidedata?
A:TheincomingdatastreamfromtheWaveRadarRex(default4Hz)iscollectedfor256
values(60secondsapproximately)andprocessedtoderiveatidalvalue.Thevalueis
updatedeveryminute.Thetidalvalueiswrittentofile.
E9.Afterthe“tidelevel”isderivedwhattypespectralprocessingdoesWaveViewuse
toderivethewaveparameters?
A.DistancemeasurementsarecollectedinanarrayandaFastFourierTransformis
appliedtoproduceHsandTz.AlsofromthisarrayHmaxisproduced.
E10.HowoftenareWaveViewdisplaysupdated?
A:Rangeandtideareupdatedeveryminute.Oncompletionoftheprocessingofthefirst
wavearray,approximately30minutesafterstartup,thewavedisplaysareupdatedevery
minute.