Raymarine RAYSTAR 120, Owner'S Handbook Manual, Page: 13 / 26

Chapter 2: Installation 2-1
Chapter 2: Installation
This handbook covers two models of the Raystar 120
NMEA Version - Part # E32026
SeaTalk Version - Part # E32025
2.1 EMC Installation Guidelines
Although every effort has been taken to ensure that our products 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 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 (1 m) 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
7 ft (2 m).
• More than 7 ft (2 m) 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, 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.
81170_2.BOOK Page 1 Thursday, July 19, 2001 2:36 PM