Filter
Top Products
Installation Guidelines 163
Appendix D: Installation Guidelines
D.1 EMC installation guidelines
All Raymarine equipment and accessories are designed to best industry
standards for use in the recreational 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
made 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 perfor-
mance, 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 cables connected to it are:
• At least 3 ft. (1m) from any equipment transmitting, or cables
carrying radio signals, e.g. VHF radios, cables and antennas. In the
case of Single Side Band (SSB) radios, the distance should be
increased to 7 ft. (2m).
• More than 7 ft. (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 is supplied from a separate battery to that used for
engine start. Voltage drops below 10 V, and starter motor tran-
sients, 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.
• Raymarine specified cables are used. Cutting and rejoining these
cables can compromise EMC performance and must be avoided unless
doing so is detailed in the installation manual.
• If a suppression ferrite is attached to a cable, this ferrite should not be
removed. If the ferrite needs to be removed during installation, it must
be reassembled in the same position.
Suppression Ferrites
The illustration shows typical
cable suppression ferrites used
with Raymarine equipment.
Always use the ferrites supplied
by Raymarine
Connections to other equipment
If your Raymarine equipment is to be connected to other equipment using
a cable not supplied by Raymarine, a suppression ferrite MUST always be
attached to the cable near to the Raymarine unit
D6626-1
164 RayTech RNS V6.0 - Users Guide
D.2 System integration
This section provides an overview of system integration and the protocols
that interface with RayTech.
You may find that your system does not use all the protocols or contain all
the instrumentation that is described in it. However it is hoped that the
information supplied will help in your understanding of how systems can
be integrated and used successfully.
What is System Integration?
System integration enables various instruments and displays to communi-
cate with each other and use the collected data to increase the
functionality of the system.
This data exchange is only possible if the data gathering is accurate, and
transfer between instruments is fast and accurate.
Fast and accurate data transfer is achieved by using a combination of the
following data protocols:
• SeaTalk.
• SeaTalk
2
.
• SeaTalk
hs
.
•hsb
2
.
• National Marine Electronics Association (NMEA)0183.
SeaTalk
The SeaTalk protocol was originally developed by Autohelm (part of
Raymarine) and enables compatible instruments to be connected by a
single cable carrying power (12 volts, 150 mA) and data in/out, without a
central processor, creating a simple network.
Additional instruments and functions can be added to a SeaTalk system,
simply by plugging them into the network. Some SeaTalk equipment can
also communicate with other non-SeaTalk equipment via the NMEA 0183
standard.
SeaTalk
2
SeaTalk
2
protocol was developed as the Controller Area Network (CAN)
based version of SeaTalk.
SeaTalk
hs
The SeaTalk
hs
protocol was developed by Raymarine to enable high speed
Ethernet data transfer between E-Series displays, DSM300 and RayTech
PC’s. This Local Area Network (LAN) enables all of the multi-function
displays connected in a system to show data from any display in the system
on all the other linked E-Series displays. This data can be displayed in full,
split and overlay screen modes.
hsb
2
The high speed bus
2
(hsb
2
) protocol was developed by Raymarine to
enable up to ten multifunction displays to be linked together. This enables
all of the screens to display data from any unit connected the bus to any
other unit which is connected to the bus. This data can be displayed in full,
split and overlay screen modes.
NMEA 0183
The NMEA 0183 Data Interface Standard was developed by the National
Marine Electronics Association of America. It is an international standard
to enable equipment from many different manufacturers to be connected
together and share information.
The NMEA 0183 standard carries similar information to SeaTalk. However
it has the important difference in that one cable will only carry information
in one direction. For this reason NMEA 0183 is generally used to connect a