Raymarine Quantum - General Cabling Guidance

4.1Generalcablingguidance
Cabletypesandlength
Itisimportanttousecablesoftheappropriatetype
andlength
•Unlessotherwisestateduseonlystandardcables
ofthecorrecttype,suppliedbyRaymarine.
•Ensurethatanynon-Raymarinecablesareofthe
correctqualityandgauge.Forexample,longer
powercablerunsmayrequirelargerwiregauges
tominimizevoltagedropalongtherun.
Routingcables
Cablesmustberoutedcorrectly,tomaximize
performanceandprolongcablelife.
•DoNOTbendcablesexcessively.Wherever
possible,ensureaminimumbenddiameterof200
mm(8in)/minimumbendradiusof100mm(4in).
100 mm (4 in)
200 mm (8 in)
•Protectallcablesfromphysicaldamageand
exposuretoheat.Usetrunkingorconduitwhere
possible.DoNOTruncablesthroughbilgesor
doorways,orclosetomovingorhotobjects.
•Securecablesinplaceusingtie-wrapsorlacing
twine.Coilanyextracableandtieitoutoftheway.
•Whereacablepassesthroughanexposed
bulkheadordeckhead,useasuitablewatertight
feed-through.
•DoNOTruncablesneartoenginesoruorescent
lights.
Alwaysroutedatacablesasfarawayaspossible
from:
•otherequipmentandcables,
•highcurrentcarryingACandDCpowerlines,
•antennae.
Strainrelief
Ensureadequatestrainreliefisprovided.Protect
connectorsfromstrainandensuretheywillnotpull
outunderextremeseaconditions.
Circuitisolation
Appropriatecircuitisolationisrequiredfor
installationsusingbothACandDCcurrent:
•Alwaysuseisolatingtransformersoraseparate
power-invertertorunPC’s,processors,displays
andothersensitiveelectronicinstrumentsor
devices.
•AlwaysuseanisolatingtransformerwithWeather
FAXaudiocables.
•Alwaysuseanisolatedpowersupplywhenusing
a3rdpartyaudioamplier.
•AlwaysuseanRS232/NMEAconverterwith
opticalisolationonthesignallines.
•AlwaysmakesurethatPC’sorothersensitive
electronicdeviceshaveadedicatedpowercircuit.
Cableshielding
Ensurethatalldatacablesareproperlyshielded
thatthecableshieldingisintact(e.g.hasn’tbeen
scrapedoffbybeingsqueezedthroughatightarea).
Suppressionferrites
•Raymarinecablesmaybepre-ttedorsupplied
withsuppressionferrites.Theseareimportantfor
correctEMCperformance.Ifferritesaresupplied
separatelytothecables(i.e.notpre-tted),you
musttthesuppliedferrites,usingthesupplied
instructions.
•Ifaferritehastoberemovedforanypurpose(e.g.
installationormaintenance),itmustbereplacedin
theoriginalpositionbeforetheproductisused.
•Useonlyferritesofthecorrecttype,suppliedby
Raymarineoritsauthorizeddealers.
•Whereaninstallationrequiresmultipleferritesto
beaddedtoacable,additionalcableclipsshould
beusedtopreventstressontheconnectorsdue
totheextraweightofthecable.
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QuantumRadome