Location And Mounting; General Location Requirements - Raymarine Ray50 Mounting And Getting Started

Location and mounting

General location requirements

When selecting a location for the unit it is important to
consider a number of factors.
Antenna mounting and EME exposure
Ensure that the antenna is connected to the radio
before transmission.
Raymarine declares a Maximum Permissible Exposure
(MPE) radius of 1.5 metres (4.9 ft) (per OET Bulletin
65) for this system, assuming 23 watts output to an
omnidirectional antenna of 3dBi gain or less.
For watercraft with suitable structures, the antenna
base must be at least 3.5 metres (11.5 ft) above the
main deck to meet the MPE for persons up to 2 metres
(6.6 ft) tall. For watercraft without such structures, the
antenna must be mounted so that its base is a minimum
of 1.5 metres (4.9 ft) vertically from heads of all persons.
The antenna must be isolated from the vessel's
metalwork using an insulated (e.g. plastic) mounting
bracket.
Compass safe distance
To prevent potential interference with the vessel's
magnetic compasses, ensure an adequate distance is
maintained from the product.
When choosing a suitable location for the product you
should aim to maintain the maximum possible distance
from 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
product this far away from a compass. In this situation,
when choosing the installation location for your product,
ensure that the compass is not affected by the product
when it is in a powered state.
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:
8
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.
1
2
3
1
2
3
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 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.
Ventilation requirements
To provide adequate airflow:
• Ensure that equipment is mounted in a compartment
of suitable size.
• Ensure that ventilation holes are not obstructed.
• Ensure adequate separation of equipment.
Mounting surface requirements
Ensure units are adequately supported on a secure
surface. Do NOT mount units or cut holes in places
which may damage the structure of the vessel.
Cable routing requirements
Ensure the unit is mounted in a location which allows
D11537-2
proper routing and connection of cables:
• Minimum cable bend radius of 100 mm (3.94 in) is
required unless otherwise stated.
• Use cable supports to prevent stress on connectors.
Electrical interference
Select a location that is far enough away from
devices that may cause interference, such as motors,
generators and radio transmitters/receivers.
Power supply
Select a location that is as close as possible to the
vessel's DC power supply. This will help to keep cable
runs to a minimum.
Ray50 / Ray60 / Ray70