Raymarine ST40 Fish Finder User Manual


 
14 ST40 Speed Instrument Owners Handbook
Running transducer cable
Each transducer has a 9 m (30 ft) cable fitted with spade terminals for
connection to the ST40 Speed instrument. Observing the following
guidelines, run the cable to the instrument:
If the cable has to be fed through the deck, always use a good quality
deck gland.
Where cables are fed through holes, always use grommets to prevent
chafing.
Secure long cable runs so they do not present a hazard.
Wherever possible, route the cable away from fluorescent lights,
engines, radio transmitting equipment, as these may cause
interference.
Connections to the instrument
You can connect your instrument:
Directly to the speed transducer as a stand-alone master instrument.
When connected in this manner, the instrument must be connected
to a suitable power source using the 1 m (3 ft) power cable provided.
As part of a SeaTalk system either as a repeater or, with a transducer
also connected as a system master. To connect to SeaTalk, you will
need an additional SeaTalk Interconnection Kit, (Part No. E25028).
When connected in this manner, power can be provided from the
SeaTalk bus (e.g. from the autopilot).
You can also connect the instrument to both the speed transducer and
SeaTalk. When thus connected, the instrument will be the master speed
instrument for the SeaTalk system.
If it is necessary to fit spade connectors to the transducer cable, do so as
shown in the following illustration. Prepare the cable, as at (a), and fit
the spade connectors, as at (b). When fitting each spade connector,
ensure that wire strands do not extend beyond the rear of the spade
connector insulation.
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