EMCinstallationguidelines
R
aymarine®equipmentandaccessoriesconformtotheappropriateElectromagneticCompatibility
(EMC)regulations,tominimizeelectromagneticinterferencebetweenequipmentandminimizethe
effectsuchinterferencecouldhaveontheperformanceofyoursystem
CorrectinstallationisrequiredtoensurethatEMCperformanceisnotcompromised.
Note:
Inareasofe
xtremeEMCinterference,someslightinterferencemaybenoticed.Wherethisoccurs
theAIS700andthesourceoftheinterferenceshouldbeseparatedbyagreaterdistance.
ForoptimumEMCperformancewerecommendthatwhereverpossible:
•R aymarine®equipmentandcablesconnectedtoitare:
–Atleast1m(3ft)fromanyequipmenttransmittingorcablescarryingradiosignalse.g.VHFradios,
cablesandantennas.InthecaseofSSBradios,thedistanceshouldbeincreasedto2m(7ft).
–Morethan2m(7ft)fromthepathofaRadarbeam.ARadarbeamcannormallybeassumedto
spread20degreesaboveandbelowtheradiatingelement.
•TheAIS700issuppliedfromaseparatebatteryfromthatusedforenginestart.Thisisimportant
topreventerraticbehavioranddatalosswhichcanoccuriftheenginestartdoesnothavea
separatebattery.
•Raymarine®specifiedcablesareused.
•Cablesarenotcutorextended,unlessdoingsoisdetailedintheinstallationinstructions.
Note:Whereconstraintsontheinstallationpreventanyoftheaboverecommendations,always
ensurethemaximumpossibleseparationbetweendifferentitemsofelectricalequipment,to
providethebestconditionsforEMCperformancethroughouttheinstallation
Suppressionferrites
•R aymarine®cablesmaybepre-fittedorsuppliedwithsuppressionferrites.Theseareimportantfor
correctEMCperformance.Ifferritesaresuppliedseparatelytothecables(i.e.notpre-fitted),you
mustfitthesuppliedferrites,usingthesuppliedinstructions.
•Ifaferritehastoberemovedforanypurpose(e.g.installationormaintenance),itmustbereplaced
intheoriginalpositionbeforetheproductisused.
•Useonlyferritesofthecorrecttype,suppliedbyRaymarine®oritsauthorizeddealers.
•Whereaninstallationrequiresmultipleferritestobeaddedtoacable,additionalcableclipsshould
beusedtopreventstressontheconnectorsduetotheextraweightoftheferrites.
Connectionstootherequipment
Requirementforferritesonnon-Raymarine®cables.
IfyourAIS700istobeconnectedtootherequipmentusingacablenotsuppliedbyRaymarine®,a
suppressionferriteMUSTalwaysbeattachedtotheendofthecableneartheAIS700.
RFinterference
Certainthird-partyexternalelectricalequipmentcancauseRadioFrequency(RF)interferencewith
GPS,AISorVHFdevicesiftheexternalequipmentisnotadequatelyinsulatedandemitsexcessive
levelsofelectromagneticinterference(EMI).
SomecommonexamplesofsuchexternalequipmentincludeLEDspotorstriplights,andterrestrial
TVtuners.
Tominimizeinterferencefromsuchequipment:
•KeepitasfarawayfromGPS,AISorVHFdevicesaspossible.
•Ensurethatanypowercablesforexternalequipmentarenotentangledwiththepowerordata
cablesforGPS,AISorVHFdevices.
•ConsiderfittingoneormorehighfrequencysuppressionferritestotheEMI-emittingdevice.The
ferrite(s)shouldberatedtobeeffectiveintherange100MHzto2.5GHz,andshouldbefitted
tothepowercableandanyothercablesexitingtheEMI-emittingdevice,ascloseaspossibleto
thepositionwherethecableexitsthedevice.
Installation19