Location And Mounting - Raymarine AIS 350 Installation Instructions Manual

4.7 Location and mounting

Site requirements
When planning the installation, take the following site requirements
for the AIS transceiver and GPS antenna, into account.
AIS requirement
This product is NOT approved for use in hazardous/flammable
atmospheres. Do NOT install in a hazardous/flammable atmosphere
(such as in an engine room or near fuel tanks).
The AIS unit must be fitted in a location where it is not likely to be
stepped on or tripped over, and which:
• Is close enough to allow connection to the vessel's VHF with the
3 ft (1 m) RF cable supplied.
• Is at least 3 ft (1 m) from an engine, compass or any magnetic
device.
• Has at least 6 in (100 mm) of clear space below, to allow access
for cabling and adequate cable bends.
• Is maintained at a temperature between -15°C (5°F) and +55°C
(130°F).
GPS antenna location requirements
A GPS antenna is supplied with the transceiver and must be installed
in accordance with the instructions provided. Do NOT connect any
other GPS antenna to the AIS unit's GPS ANT (antenna) connector.
The GPS antenna can be mounted either on a flat horizontal surface
or on a suitable pole.
• If you intend to surface mount the antenna, ensure you have
access to the underside of the mounting surface.
• If you intend to pole-mount the antenna, the pole needs to have
a 1 inch 14 TPI thread.
AIS650 Class B transceiver
Important: The GPS antenna must be mounted in a location
that provides a good direct line of site to the entire sky, around
the horizon.
Ensure that the selected mounting location is:
• Open and clear of any obstructions (such as masts, search lights,
or other structures) that could block line-of-sight to the sky.
• As low as possible, to keep the antenna as stable as possible.
The more stable the antenna, the more effectively it will track
satellites and provide stable data.
• As far as possible (at least 1 m (3 ft)) from other antennae and
electronic equipment.
Do NOT mount the antenna:
• In any area where it could be stepped on or tripped over.
• Up a mast. This will cause the antenna to swing and give
significant errors in position data.
• In the direct path of a radar beam.
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