Raymarine RS232 Installation Manual download pdf (Page 8)

PC/SeaTalk/NMEA Interface Box

Chapter 3: Operation/Wiring

EMC Installation Guidelines

All Raymarine 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 required to ensure

that performance is not compromised. 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.

The guidelines given here describe the conditions for optimum EMC

performance, but it is recognised 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 cables connected to it are:

• At least 1 m (3 ft) 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 2 m (7 ft).

• 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 equipment is supplied from a separate battery from that used for engine

start. Voltage drops below 10 V in the power supply to our products, and

starter motor transients, can cause the equipment to reset. This will not

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Raymarine RS232 Installation Manual Page 8