Viewing Angle Considerations; Emc Installation Guidelines - Raymarine AXIOM 2 PRO Installation Instructions Manual

Some wireless products feature a signal strength indicator to assist in the
process of determining the location with the best wireless performance.
Choose the location with the highest and most consistently strong direct
signal reading, during a 5 minute monitoring period. Try alternative locations
for the transmitter to maximise the signal strength to the displays; e.g. try
locations below a hatch or skylight or near to a window. A small change in
product position can result in a significant change in the signal strength.
Note:
Some wireless products (e.g. a Hull Transmitter) will not transmit data
unless a transducer is connected. Also consider that an NMEA or
SeaTalkng product (e.g. an interface) will not transmit data unless an
appropriate data source is connected.
Interference and other equipment
Interference from other people's wireless devices can cause interference
with your products. You can use a third-party wireless analyzer tool /
smartphone app to assess the best wireless channel to use (e.g. a channel
not in use or one used by the least number of devices).
Wireless products should be installed at least 1 m (3 ft) away from:
• Other wireless-enabled products
• Transmitting products that send wireless signals in the same frequency
range
• Other electrical, electronic or electromagnetic equipment that may
generate interference.
Software updates
It's also important to ensure all your wireless products are running the
latest software versions, as improvements are made over time to wireless
performance.

7.6 Viewing angle considerations

As display contrast and color are affected by the viewing angle, It is
recommended that you temporarily power up the display, prior to installation,
to enable you to best judge which location provides the optimum viewing
angle.
For viewing angles for your product refer to the Technical specification.
Location requirements

7.7 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:
• Raymarine® equipment and cables connected to it are:
– At least 1 m (3.3 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 (6.6 ft).
– More than 2 m (6.6 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 product is supplied from a separate battery from that used for engine
start. This is important to prevent erratic behavior and data loss which can
occur if the engine start does not have a separate battery.
• Raymarine® specified cables are used.
• Cables are not cut or extended, unless doing so is detailed in the
installation manual.
Note:
Where constraints on the installation prevent any of the above
recommendations, always ensure the maximum possible separation
between different items of electrical equipment, to provide the best
conditions for EMC performance throughout the installation.
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