I N S T A L L A T I O N; Emc Installation Guidelines - Raymarine AIS250 User Manual

C h a p t e r 2 : I n s t a l l a t i o n
C h a p t e r 2 : I n s t a l l a t i o n
2 . 1 E M C i n s t a l l a t i o n g u i d e l i n e s
Raymarine equipment and accessories are designed to the best
industry standards for
environment.
Their design and manufacture conforms to the appropriate Elec-
tromagnetic Compatibility (EMC) regulations, but correct
installation is required to ensure that performance is not
compromised.
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 elec-
trical equipment.
For optimum EMC performance, it is recommended that wher-
ever possible:
• Raymarine equipment and the 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 product is supplied by a separate battery from that used
to start the engine. Power supply voltages below the
use in the recreational
minimum specified for a product, and starter motor tran-
marine sients, can cause the product to reset. This will not damage
the product, 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.
S u p p r e s s i o n F e r r i t e s
If a supplied cable is fitted with a suppression ferrite, the ferrite
must not be removed, unless it is necessary to facilitate installa-
tion. Any ferrite thus removed must be replaced in the original
position immediately after installation is complete.
If additional suppression ferrites are required, use only ferrites
supplied by Raymarine.
C o n n e c t i o n s t o O t h e r E q u i p m e n t
If Raymarine equipment is to be connected to other equipment
using a cable not supplied by Raymarine, a Raymarine suppres-
sion ferrite MUST always be attached to the cable near the
Raymarine unit.
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