Vesselconstruction
Theconstructionofyourvesselcanhaveanimpact
onGPSperformance.Forexample,theproximity
ofheavystructuresuchasastructuralbulkhead,
ortheinterioroflargervesselsmayresultina
reducedGPSsignal.Beforelocatingequipment
withaninternalGPSantennabelowdecks,seek
professionalassistanceandconsideruseofan
externalGPSantennamountedabovedecks.
Prevailingconditions
Theweatherandlocationofthevesselcanaffectthe
GPSperformance.Typicallycalmclearconditions
provideforamoreaccurateGPSx.Vesselsat
extremenortherlyorsoutherlylatitudesmayalso
receiveaweakerGPSsignal.GPSantennamounted
belowdeckswillbemoresusceptibletoperformance
issuesrelatedtotheprevailingconditions.
EMCinstallationguidelines
Raymarineequipmentandaccessoriesconformto
theappropriateElectromagneticCompatibility(EMC)
regulations,tominimizeelectromagneticinterference
betweenequipmentandminimizetheeffectsuch
interferencecouldhaveontheperformanceofyour
system
CorrectinstallationisrequiredtoensurethatEMC
performanceisnotcompromised.
Note:InareasofextremeEMCinterference,
someslightinterferencemaybenoticedonthe
product.Wherethisoccurstheproductandthe
sourceoftheinterferenceshouldbeseparatedby
agreaterdistance.
ForoptimumEMCperformancewerecommend
thatwhereverpossible:
•Raymarineequipmentandcablesconnectedto
itare:
–Atleast1m(3ft)fromanyequipment
transmittingorcablescarryingradiosignalse.g.
VHFradios,cablesandantennas.Inthecase
ofSSBradios,thedistanceshouldbeincreased
to7ft(2m).
–Morethan2m(7ft)fromthepathofaradar
beam.Aradarbeamcannormallybeassumed
tospread20degreesaboveandbelowthe
radiatingelement.
•Theproductissuppliedfromaseparatebattery
fromthatusedforenginestart.Thisisimportantto
preventerraticbehavioranddatalosswhichcan
occuriftheenginestartdoesnothaveaseparate
battery.
•Raymarinespeciedcablesareused.
•Cablesarenotcutorextended,unlessdoingsois
detailedintheinstallationmanual.
Note:Whereconstraintsontheinstallation
preventanyoftheaboverecommendations,
alwaysensurethemaximumpossibleseparation
betweendifferentitemsofelectricalequipment,to
providethebestconditionsforEMCperformance
throughouttheinstallation
Viewingangleconsiderations
Asdisplaycontrast,colorandnightmode
performanceareallaffectedbytheviewingangle,
Raymarinerecommendsyoutemporarilypowerup
thedisplaywhenplanningtheinstallation,toenable
youtobestjudgewhichlocationgivestheoptimum
viewingangle.
LCDorientation
Raymarinemultifunctiondisplays(MFDs)canbe
viewedfromwideanglestoptobottomandleftto
right.