Raymarine RAY91 - Connections Overview; Eneral C Abling Guidance; G Eneral C Abling Guidance

4.
1Generalcablingguidance
Cabletypesandlength
Itisimportanttousecablesoftheappropriatetypeand
length
•Unlessotherwisestateduseonlystandardcablesof
thecorrecttype,suppliedbyRaymarine.
•Ensurethatanynon-Raymarinecablesareofthe
correctqualityandgauge.Forexample,longerpower
cablerunsmayrequirelargerwiregaugestominimize
voltagedropalongtherun.
Routingcables
Cablesmustberoutedcorrectly,tomaximize
performanceandprolongcablelife.
•DoNOTbendcablesexcessively.Whereverpossible,
ensureaminimumbenddiameterof200mm(8in)/
minimumbendradiusof100mm(4in).
•Protectallcablesfromphysicaldamageande
xposure
toheat.Usetrunkingorconduitwherepossible.Do
NOTruncablesthroughbilgesordoorways,orclose
tomovingorhotobjects.
•Securecablesinplaceusingtie-wrapsorlacingtwine.
Coilanyextracableandtieitoutoftheway.
•Whereacablepassesthroughanexposedbulkhead
ordeckhead,useasuitablewatertightfeed-through.
•DoNOTruncablesneartoenginesorfluorescent
lights.
Alwaysroutedatacablesasfarawayaspossiblefrom:
•otherequipmentandcables,
•highcurrentcarryingACandDCpowerlines,
•antennae.
Strainrelief
Ensureadequatestrainreliefisprovided.Protect
connectorsfromstrainandensuretheywillnotpullout
underextremeseaconditions.
Circuitisolation
Appropriatecircuitisolationisrequiredforinstallations
usingbothACandDCcurrent:
•Alwaysuseisolatingtransformersoraseparate
power-invertertorunPC’s,processors,displaysand
othersensitiveelectronicinstrumentsordevices.
•AlwaysuseanisolatingtransformerwithWeatherFAX
audiocables.
•Alwaysuseanisolatedpowersupplywhenusinga
3rdpartyaudioamplifier.
•AlwaysuseanRS232/NMEAconverterwithoptical
isolationonthesignallines.
•AlwaysmakesurethatPC’sorothersensitive
electronicdeviceshaveadedicatedpowercircuit.
Cableshielding
Ensurethatallcablesareproperlyshieldedandthatthe
cableshieldingisundamaged.
Dustcaps
Topreventpotentialwateringress,connectorsnotin
useshouldbeprotectedusingthesupplieddustcaps.
Connectionstootherequipment
Requirementforferritesonnon-Raymarinecables
IfyourRaymarineequipmentistobeconnectedtoother
equipmentusingacablenotsuppliedbyRaymarine,
asuppressionferriteMUSTalwaysbeattachedtothe
cableneartheRaymarineunit.
4.2Connectionsoverview
ConnectionConnectsto
Suitable
cables
1
GNSS(GPS)
antenna
connection
PassiveGNSS
antenna
GNSS
antenna’s
fittedcable.
2
Earthstud
DONO
T
CONNECT
N/A
3
VHFantenna
connection
VHFantenna
orSplitter
VHF
antenna
’s
fittedcable.
4P
ower
anddata
connection
•12Vdc
power
supply
•NMEA0183
devices
•LoudHailer
•Suitable
power
extension
orcircuit
breaker.
•cable
supplied
withyour
NMEA0183
device
•Loud
hailer’s
fittedcable
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