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3.1 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)
100 mm (4 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,
18
• antennae.
Strain relief
Ensure adequate strain relief is provided. Protect
connectors from strain and ensure they will not pull out
under extreme sea conditions.
Circuit isolation
Appropriate circuit isolation is required for installations
using both AC and DC current:
• Always use isolating transformers or a separate
power-inverter to run PC's, processors, displays and
other sensitive electronic instruments or devices.
• Always use an isolating transformer with Weather
FAX audio cables.
• Always use an isolated power supply when using a
3rd party audio amplifier.
• Always use an RS232/NMEA converter with optical
isolation on the signal lines.
• Always make sure that PC's or other sensitive
electronic devices have a dedicated power circuit.
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).
3.2 SPX-10 / SPX-30 connections
overview
1
2
3
OFF
ON
Raymarine
SLEEP
FAULT
FAULT
12V
24V
FLUXGATE
RUDDER
CLUTCH
7
8
9
10
1. SeaTalk
ng
2. NMEA 0183 in / out (4800 baud rate)
3. Sleep switch connection
4. Power in
5. Drive power out
6. RF ground
7. SeaTalk
8. Fluxgate compass
9. Rudder position sensor
10. Drive clutch
SPX10, SPX30, SPX-SOL
4
5
6
A
B
P OWER
MOTOR
D10444-2
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