6 Universal I/O Drive - Installation Guide
they willperform under allconditions, itis important to understand
whatfactorscould affectthe operationofthe product.
TheguidelinesgivenheredescribetheconditionsforoptimumEMC
performance, butit is recognized that it may notbe possible to meet
all of these conditions in all situations. To ensure the best possible
conditionsforEMC performancewithin the constraints imposedby
any location, always ensure the maximum separation possible
between different items of electrical equipment.
For optimumEMC performance, it isrecommended that wherever
possible:
•Raymarine equipment and cables connectedto it are:
•At least3 ft (1 m) from any equipment transmittingor cables
carryingradiosignalse.g.VHF radios,cablesand antennas.
In the case of SSB radios, the distance should be increased to
7ft(2m).
•More than7 ft (2m) from the path ofa radar beam. Aradar
beam can normally be assumed to spread 20degrees above
andbelow theradiatingelement.
•The equipment is supplied from a separate battery fromthat used
for engine start. Voltage drops below10 V, and startermotor
transients,cancausetheequipmenttoreset.Thiswillnotdamage
theequipment,butmay cause theloss ofsome informationand
maychange theoperatingmode.
•Raymarine specified cables are used. Cutting and rejoining these
cables can compromise EMC performanceand must be avoided
unless doing sois detailed in the installation manual.
•Ifasuppressionferriteisattachedtoacable,thisferriteshouldnot
beremoved.Iftheferrite needs to be removed duringinstallation
it mustbe reassembled in the sameposition.
Suppression ferrites
Figure 3showstypicalcable suppressionferritesusedwith
Raymarine equipment. Use the ferritessuppliedby Raymarine.
Connections to other equipment
If your Raymarine equipment is to be connected to otherequipment
usingacablenotsuppliedbyRaymarine,asuppressionferriteMUST
always be attached tothe cable nearto theRaymarine unit.
