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Chapter 5: Installation 5-1
Chapter 5: Installation
5.1 Introduction
This chapter provides instructions to assist in planning the installation of the
RayChart 420 Chartplotter aboard your vessel.
Note: If you wish to practice using the RayChart 420 before installation, you
can connect it, via a 1A quick blow fuse, to a 12Vdc power supply and operate it
using the simulator mode, as described in Chapter 2 Getting Started.
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 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:
• All Raytheon 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 10V in the power supply to our products,
and starter motor transients, can cause the equipment to reset. This will not
damage the equipment, but may cause the loss of some information and
may change the operating mode.
• Raytheon specified cables are used at all times. Cutting and rejoining these
cables can compromise EMC performance and so must be avoided unless
doing so is detailed in the installation instructions.