6 I/O Drive - Installation Guide
Theguidelinesgivenhere describetheconditionsforoptimumEMC
performance, butit is recognized that it may not be possible to meet
all of these conditions in all situations. To ensure the best possible
conditionsforEMC performancewithin theconstraintsimposed by
any location, always ensure the maximumseparation possible
between different items of electrical equipment.
For optimumEMC performance, itis recommended that wherever
possible:
•Raymarine equipment and cables connectedto it are:
•At least3 ft (1m) fromany equipmenttransmitting or cables
carryingradio signalse.g.VHFradios,cablesand antennas.
In the case of SSB radios, the distance should be increased to
7ft(2m).
•More than7 ft(2 m) from the path ofa radarbeam. A radar
beam can normally be assumed to spread 20degrees above
andbelow the radiating element.
•The equipment is supplied from a separate battery fromthat used
for engine start. Voltage drops below10 V, and startermotor
transients,cancausetheequipmenttoreset.Thiswillnotdamage
theequipment,but maycausethe lossofsome informationand
maychange the operatingmode.
•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 needstoberemovedduringinstallation
it mustbe reassembled in the same position.
Suppression ferrites
Figure 3showstypicalcable suppressionferrites usedwith
Raymarineequipment.Alwaysusethe ferritessuppliedby
Raymarine.
Connections to other equipment
If your Raymarine equipment is to be connected to other equipment
usingacablenotsuppliedbyRaymarine,asuppressionferriteMUST
always beattachedto the cable nearto theRaymarineunit.