6 RAYDATA Installation and Operation Handbook2.2 EMC Installation and Service GuidelinesIMPORTANT NOTEAll Raymarine equipment and accessories are designed to the bestindustry standards for use in the leisure marine environment.Their design and manufacture conforms to the appropriateElectromagnetic Compatibility (EMC) standards, but good installation isrequired to ensure that performance is not compromised. Althoughevery effort has been taken to ensure that they will perform under allconditions, it is important to understand what factors could affect theoperation of the product.InstallationTo avoid the risk of operating problems, all Raymarine equipment andcables connected to it should be:• At least 3 feet (1m) from any equipment transmitting or cablescarrying radio signals e.g. VHF radios, cables and antennas. In thecase of SSB radios, the distance should be increased to 7ft (2m).• More than 7ft (2m) from the path of a radar beam. A radar beam cannormally be assumed to spread 20 degrees above and below theradiating element.• The equipment should be supplied from a different battery than theone used for engine start. Voltage drops below 10v in the powersupply to our products can cause the equipment to reset. This will notdamage the equipment, but will cause the loss of some informationand can change the operating mode.• Genuine Raymarine cables should be used at all times. Cutting andrejoining these cables can compromise EMC performance and soshould be avoided unless doing so is detailed in this handbook.• If a suppression ferrite is attached to a cable, this ferrite should not beremoved. If the ferrite has to be removed during installation it must bereassembled in the same position.