Raymarine E SERIES Installation Instructions Manual page 31

Compass safe distance
To prevent potential interference with the vessel's
magnetic compasses, ensure an adequate distance
is maintained from the display.
When choosing a suitable location for the
multifunction display you should aim to maintain the
maximum possible distance between the display and
any compasses. Typically this distance should be at
least 1 m (3 ft) in all directions. However for some
smaller vessels it may not be possible to locate
the display this far away from a compass. In this
situation, the following figures provide the minimum
safe distance that should be maintained between the
display and any compasses.
6
2 5 0
m m
( 9 . 8
4 i n
)
m m
7 0 0
n )
. 5 i
( 2 7
5
Compass
position in
relation to
Item display
1 Top
2 Rear
3 Right-hand side
4 Underside
5
Front
6 Left-hand side
GPS location requirements
In addition to general guidelines concerning the
location of marine electronics, there are a number
of environmental factors to consider when installing
equipment with an internal GPS antenna.
Mounting location
• Above Decks mounting:
Provides optimal GPS performance. (For
equipment with appropriate waterproof rating.)
• Below Decks mounting:
GPS performance may be less effective and may
require an external GPS antenna mounted above
decks.
Planning the installation
1
2
0 0
m m
m m
( 7 . 8 5 0 0
n )
. 7 i
7 i n
( 1 9
)
3 5 0
3 0 0
m m
m m ( 1 3
( 1 1
. 8 i
. 8 i
n )
n )
3
4
Minimum safe
distance from
display
200 mm (7.87 in.)
500 mm (19.7 in.)
350 mm (13.8 in.)
300 mm (11.8 in.)
700 mm (27.5 in.)
250 mm (9.84 in.)
2
1. This location provides optimal GPS
performance (above decks).
2. In this location, GPS performance may be less
effective.
3. This location is NOT recommended for GPS
antenna.
Vessel construction
The construction of your vessel can have an impact
on GPS performance. For example, the proximity
of heavy structure such as a structural bulkhead,
or the interior of larger vessels may result in a
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reduced GPS signal. Before locating equipment
with an internal GPS antenna below decks, seek
professional assistance and consider use of an
external GPS antenna mounted above decks.
Prevailing conditions
The weather and location of the vessel can affect the
GPS performance. Typically calm clear conditions
provide for a more accurate GPS fix. Vessels at
extreme northerly or southerly latitudes may also
receive a weaker GPS signal. GPS antenna mounted
below decks will be more susceptible to performance
issues related to the prevailing conditions.
EMC installation guidelines
Raymarine equipment and accessories conform to
the appropriate Electromagnetic Compatibility (EMC)
regulations, to minimize electromagnetic interference
between equipment and minimize the effect such
interference could have on the performance of your
system
Correct installation is required to ensure that EMC
performance is not compromised.
Note: In areas of extreme EMC interference,
some slight interference may be noticed on the
product. Where this occurs the product and the
source of the interference should be separated by
a greater distance.
For optimum EMC performance we recommend
that wherever possible:
1
2
3
1
2
3
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