Raymarine HSB Chartplotter, User Manual

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Chapter 6: Installation 105
6.5 Cable Runs
You need to consider the following before installing the system cables:
– You need to fit the power cable. Additional cables will be required if
you are installing an integrated system.
– All cables should be adequately cleated and protected from
physical damage and exposure to heat - avoid running cables
through bilges or doorways, or close to moving or hot objects.
– Where a cable passes through an exposed bulkhead or deckhead,
a watertight gland or
swan neck
tube should be provided.
You need to run the following cables:
• Power/NMEA Input cable, supplied with the display unit. This has a
connector plug at one end for connecting to the display unit, and 7
cores at the other for connecting the power supply and (optionally)
NMEA inputs (see Section 6.7).
• HSB Cable, optional
• SeaTalk cable, optional, with SeaTalk connector(s) at one or both
ends.
• NMEA Output cable, optional, with a NMEA OUT connector at one
end only.
Power Cable
The HSB series display is intended for use on ships’ DC power systems
operating in the 10.7 to 32VDC range (that is, 12V and 24V systems, not
32V systems). A 1.5m (5ft) power cable is supplied for connecting the
ship’s DC power to the radar.
If a longer power cable run is required, use the supplied power cable to
connect to the display unit. Then use a suitable connector block to
connect the free end to the extension cable. The supplied power cable
has a cross-section of 2.0mm
2 .
Note: For vessels with 24V power systems, the power cable may be
extended by up to 20m using a wire gauge of 1.5mm
2 (AWG 16) or
greater.
For vessels with 12V power systems , longer power cable runs may
require larger wire gauges to minimise any voltage drop in the cable. In
order to determine the correct supply cable size if the power cable must
be extended, estimate the length of cable between the ship’s main
Cable Runs