Raymarine CP450C - General Cabling Guidance

3.1Generalcablingguidance
Cabletypesandlength
Itisimportanttousecablesoftheappropriatetypeandlength
•Unlessotherwisestateduseonlystandardcablesofthecorrect
type,suppliedbyRaymarine.
•Ensurethatanynon-Raymarinecablesareofthecorrectquality
andgauge.Forexample,longerpowercablerunsmayrequire
largerwiregaugestominimizevoltagedropalongtherun.
Strainrelief
Ensureadequatestrainreliefisprovided.Protectconnectorsfrom
strainandensuretheywillnotpulloutunderextremeseaconditions.
Circuitisolation
Appropriatecircuitisolationisrequiredforinstallationsusingboth
ACandDCcurrent:
•Alwaysuseisolatingtransformersoraseparatepower-inverter
torunPC’s,processors,displaysandothersensitiveelectronic
instrumentsordevices.
•AlwaysuseanisolatingtransformerwithWeatherFAXaudio
cables.
•Alwaysuseanisolatedpowersupplywhenusinga3rdparty
audioamplier.
•AlwaysuseanRS232/NMEAconverterwithopticalisolationon
thesignallines.
•AlwaysmakesurethatPC’sorothersensitiveelectronicdevices
haveadedicatedpowercircuit.
Cableshielding
Ensurethatalldatacablesareproperlyshieldedthatthecable
shieldingisintact(e.g.hasn’tbeenscrapedoffbybeingsqueezed
throughatightarea).
20CP450C