3
EMC installation guidelines
Raymarine equipment and accessories conform to the appropriate Electromagnetic
Compatibility (EMC) regulations, to minimize electromagnetic interference between
equipment and minimize the effect such interference could have on the performance of your
system.
Correct installation is required to ensure that EMC performance is not compromised.
For
optimum
EMC performance we recommend that wherever possible:
• Raymarine equipment and cables connected to it are:
• At least 1 m (3ft) away from any equipment transmitting or cables carrying radio sig-
nals 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 2 m (7 ft) 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. This is
important to prevent erratic behavior and data loss which can occur if the engine start
does not have a separate battery.
• Raymarine specified cables are used.
• Cables are not cut or extended, unless doing so is detailed in the installation manual.
Note:
Where constraints on the installation prevent any of the above recommendations, always ensure
the maximum possible separation between different items of electrical equipment, to provide the best
conditions for EMC performance throughout the installation.
Suppression ferrites
Figure 1
shows typical cable suppression ferrites used with Raymarine equipment. Always use
the ferrites supplied by Raymarine.
WARNING
Ensure cleanliness
Absolute cleanliness is essential when working with hydraulic systems.
Even the smallest dirt particle could prevent the steering system check
valves from working correctly. Ensure that no dirt enters the system
during the installation, and that all hoses and fittings are cleaned before
making any connections.
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