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RayChart 620 and 630
EMC Guidelines
Note: Before attempting any installation, you should read the Electromagnetic
Compatibility (EMC) installation guidelines provided below.
This chapter covers the following topics:
• Packing list
• Planning the installation
• Mounting the chartplotter
• Chartplotter connections
• System check and initial setup
If you are connecting your chartplotter to a larger system, you should refer to the
installation instructions for the other units and for connection to the SeaTalk
bus.
EMC Installation Guidelines
All Raytheon equipment and accessories are designed to the best industry
standards for use in the leisure marine environment.
Their design and manufacture conforms to the appropriate Electromagnetic
Compatibility (EMC) standards, but correct installation is essential to ensure
that EMC performance is maintained. Although every effort has been taken to
ensure that they will perform under all conditions, it is important to understand
what factors could affect the operation of the product.
To avoid the risk of operating problems, all Raytheon equipment and cables
connected to it should be:
• At least 3 feet (1m) 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 7ft (2m).
• More than 7ft (2m) 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 equipment should be supplied from a different battery than the one used
for engine start. Voltage drops below 10v in the power supply to our
products can cause the equipment to reset. This will not damage the
equipment, but will cause the loss of some information and can change the
operating mode.
• Genuine Raytheon cables should be used at all times. Cutting and rejoining
these cables can compromise EMC performance and so should be avoided
unless doing so is detailed in this handbook.
• If a suppression ferrite is attached to a cable, this ferrite should not be
removed. If the ferrite has to be removed during installation it must be
reassembled in the same position.
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