General Cabling Guidance; Ga150 Connection - Raymarine GA150a Installation Instructions Manual

4.1 General cabling guidance

Cable types and length
It is important to use cables of the appropriate type and length
• Unless otherwise stated use only standard cables of the
correct type, supplied by Raymarine.
• Ensure that any non-Raymarine cables are of the correct
quality and gauge. For example, longer power cable runs may
require larger wire gauges to minimize voltage drop along the
run.
Routing cables
Cables must be routed correctly, to maximize performance and
prolong cable life.
• Do NOT bend cables excessively. Wherever possible, ensure
a minimum bend diameter of 200 mm (8 in) / minimum bend
radius of 100 mm (4 in).
200 mm (8 in)
• Protect all cables from physical damage and exposure to heat.
Use trunking or conduit where possible. Do NOT run cables
through bilges or doorways, or close to moving or hot objects.
• Secure cables in place using tie-wraps or lacing twine. Coil
any extra cable and tie it out of the way.
• Where a cable passes through an exposed bulkhead or
deckhead, use a suitable watertight feed-through.
• Do NOT run cables near to engines or fluorescent lights.
Always route data cables as far away as possible from:
• other equipment and cables,
• high current carrying ac and dc power lines,
• antennae.
Caution: Pulling cables
Do NOT use cords or ropes, attached to cable
connectors, to pull cables through restricted
apertures (e.g. as in bulkheads), as this could
cause damage to cables.
Strain relief
Ensure adequate strain relief is provided. Protect connectors
from strain and ensure they will not pull out under extreme sea
conditions.
Cable shielding
Ensure that all data cables are properly shielded that the
cable shielding is intact (e.g. hasn't been scraped off by being
squeezed through a tight area).
18
100 mm (4 in)

4.2 GA150 connection

a9x and a12x MFDs include an internal GNSS (GPS /
GLONASS) receiver. The GA150 antenna can be used to
improve the GNSS (GPS / GLONASS) receiver's reception.
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1. GA150 antenna
2. a9x or a12x variant MFD
For installation details for your external antenna, refer to the
documentation that accompanied the antenna.
Note:
• The Beidou GNSS is supported but not currently available.
• A GA150 must be connected in order to receive the Beidou
system when it becomes available.
• A software update will be required to add support for Beidou
once the system is available. Please check with your
Raymarine dealer for further details.
Antenna cable length
The GA150 is supplied with a fitted 10 m (33 ft.) cable. The
length of the antenna cable can be extended if required.
The antenna cable length can be extended by up to 10 m (33 ft.)
giving a total maximum cable length of 20 m (66 ft.)
50 ohm coaxial cable and reliable connectors (offering protection
against water ingress) must be used when extending the
antenna cable.
Note: Extending the cable length by more than the
recommended maximum length will result in signal
degradation.
Connecting an external antenna
Follow the steps below to connect the GA150 external antenna
to your a9x or a12x variant MFD.
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3
1. Fully insert the antenna's cable connector into the GA150
connector on the rear of your display.
2. Turn the locking collar clockwise until TIGHT.
3. Push to protective boot over the connection on the back of
the display.
4. Use the supplied cable tie to secure the protective boot over
the connection.
D13069-1
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4
D13074-1
GA150