Raymarine ST7000, Installation Instructions Manual

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It is very important to ensure that the fluxgate is
positioned at least 0.8m (2ft 6in) away from the
vessel's steering compass in order to avoid
deviation of both compasses. The fluxgate must
also be positioned as far away as possible from
large iron masses, such as the engine and other
magnetic devices which may cause deviation and
reduce the sensitivity of the sensor. If any doubt
exists over magnetic suitability of the chosen site,
the position may be surveyed using a simple hand
bearing compass. The hand bearing compass
should be fixed in the chosen position and the
vessel swung through 360 deg. Relative
differences in reading between the hand bearing
compass and the vessel's main steering compass
should ideally not exceed 10 deg. on any heading.
Installation Precautions
Correct installation of the course computer and
fluxgate compass is vital to the successful
performance of the ST7000.
2.1.4 Rudder Reference Transducer
The rudder reference unit must be mounted on a
suitable base adjacent to the rudder stock (Fig.9)
using the self tapping screws provided. The base
height must ensure correct vertical alignment of
the rudder reference unit arm and tiller arm. If it is
more convenient, the rudder reference unit may
be mounted upside down (logo downwards), but if
this is done, the red and green wires must be
reversed in the connector unit.
The rudder reference unit has a built in spring to
remove any free play in the linkage to the tiller.
This gives very precise rudder position.
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