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16 ST40 Depth Instrument Owner’s Handbook
3.2 Procedures
Adapt these procedures as appropriate, to suit your individual
requirement.
CAUTION:
Where it is necessary to cut holes (e.g. for cable routing and
instrument mounting), ensure that these will not cause a hazard by
weakening critical parts of the vessel’s structure. If in doubt, seek
advice from a reputable boat builder.
Fitting transducer
Instructions for installing and maintaining the depth transducer are
packed with it. Before attempting to install the transducer, read these
instructions and the Site requirements for transducers described in this
Chapter.
Running transducer cable
Each transducer type has a 9 m (30 ft) cable fitted with spade terminals
for connection to the ST40 Depth 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.
Important point: Do NOT shorten the cable from the depth transducer
as this will seriously degrade transducer performance.
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