Emc Installation Guidelines - Raymarine Base Station Installation And Commissioning Manual

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Figure 4 - Base Station separations

EMC Installation Guidelines

Raymarine equipment and accessories are designed to the best industry standards for use in the
recreational marine environment.
Their design and manufacture conforms to the appropriate Electromagnetic Compatibility (EMC)
regulations, but correct installation is required to ensure that performance is not compromised.
The guidelines given here describe the conditions for optimum EMC performance, but it is recognized that
it may not be possible to meet all of these conditions in all situations. To ensure the best possible conditions
for EMC performance within the constraints imposed by any location, always ensure the maximum
separation possible between different items of electrical equipment.
For optimum EMC performance, it is recommended that wherever possible:
• Raymarine equipment and the cables connected to it are:
• At least 3 ft (1 m) from any equipment transmitting or cables carrying radio signals e.g. VHF radios,
cables and antennas. In the case of SSB radios, the distance should be increased to 7 ft (2 m).
• More than 7 ft (2 m) from the path of a radar beam. A radar beam can normally be assumed to
spread 20 degrees above and below the radiating element.
• The product is supplied from a separate battery from that used for engine start. Power supply voltages
below the minimum specified for a product, and starter motor transients, can cause the product to
reset. This will not damage the product, but may cause the loss of some information and may change
the operating mode.
• Raymarine specified cables are used. Cutting and rejoining these cables can compromise EMC perfor-
mance and must be avoided unless doing so is detailed in the installation manual.
Suppression Ferrites
If a supplied cable is fitted with a suppression ferrite, the ferrite must not be removed, unless it is necessary
to facilitate installation. Any ferrite thus removed must be replaced in the original position immediately
installation is complete.
If additional suppression ferrites are required, use only ferrites supplied by Raymarine.
Connections to Other Equipment
If Raymarine equipment is to be connected to other equipment using a cable not supplied by Raymarine, a
Raymarine suppression ferrite MUST always be attached to the cable near the Raymarine unit.
Min 3 ft 3 in (1m)
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