Raymarine a9 Series - Location and Mounting; General Location Requirements; Ventilation Requirements; Mounting Surface Requirements

Features•NMEA0183
•Bluetooth
•Wi-Fi
•InternalGNSS(GPS/
GLONASS)receiver
•GA150externalantenna
connection
Controls
Multi-Touch
touchscreen
(HybridTouchwhenpairedwitha
remotekeypad.)
Handbookillustrations
Theillustrationofthemultifunctiondisplay(MFD)below
isusedthroughoutthismanualandunlessotherwise
statedcanapplytoallvariantsofaSeriesMFDs.
D12823-1
Locationandmounting
Selectingalocation
Generallocationrequirements
Whenselectingalocationfortheunititisimportantto
consideranumberoffactors.
Ventilationrequirements
Toprovideadequateairow:
•Ensurethatequipmentismountedinacompartment
ofsuitablesize.
•Ensurethatventilationholesarenotobstructed.
•Ensureadequateseparationofequipment.
Mountingsurfacerequirements
Ensureunitsareadequatelysupportedonasecure
surface.DoNOTmountunitsorcutholesinplaces
whichmaydamagethestructureofthevessel.
Cableroutingrequirements
Ensuretheunitismountedinalocationwhichallows
properroutingandconnectionofcables:
•Minimumcablebendradiusof100mm(3.94in)is
requiredunlessotherwisestated.
•Usecablesupportstopreventstressonconnectors.
Electricalinterference
Selectalocationthatisfarenoughawayfrom
devicesthatmaycauseinterference,suchasmotors,
generatorsandradiotransmitters/receivers.
GPSlocationrequirements
Inadditiontogeneralguidelinesconcerningthe
locationofmarineelectronics,thereareanumber
ofenvironmentalfactorstoconsiderwheninstalling
equipmentwithaninternalGPSantenna.
Mountinglocation
•AboveDecksmounting:
ProvidesoptimalGPSperformance.(Forequipment
withappropriatewaterproofrating.)
•BelowDecksmounting:
GPSperformancemaybelesseffectiveandmay
requireanexternalGPSantennamountedabove
decks.
D1153 7-2
1
2
3
1
2
3
1
.
ThislocationprovidesoptimalGPSperformance
(abovedecks).
2
.
Inthislocation,GPSperformancemaybeless
effective.
3
.
ThislocationisNOTrecommendedforGPS
antenna.
Vesselconstruction
Theconstructionofyourvesselcanhaveanimpact
onGPSperformance.Forexample,theproximityof
heavystructuresuchasastructuralbulkhead,orthe
interioroflargervesselsmayresultinareducedGPS
signal.BeforelocatingequipmentwithaninternalGPS
antennabelowdecks,seekprofessionalassistance
andconsideruseofanexternalGPSantennamounted
abovedecks.
Prevailingconditions
Theweatherandlocationofthevesselcanaffectthe
GPSperformance.Typicallycalmclearconditions
provideforamoreaccurateGPSx.Vesselsat
extremenortherlyorsoutherlylatitudesmayalso
receiveaweakerGPSsignal.GPSantennamounted
belowdeckswillbemoresusceptibletoperformance
issuesrelatedtotheprevailingconditions.
7