B&G Hydra 2000, Руководство пользователя

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Hydra 2000 User Manual
Part 3 - Calibration
HB-0844-02
3-12
3.4 COMPASS CALIBRATION
3.4.1 Principles of Compass Calibration (Super Halcyon 3
& Halcyon 2000 Compasses)
B&G's Autoswing Compasses contain software that allows them
to record the magnetic fields in the yacht that are causing the
deviation errors. It calculates the corrections every time the boat
completes a 540° turn - Super Halcyon 3 or 360
°
turn - Halcyon
2000, provided the following conditions are met:
(a) The 540° turn - Super Halcyon 3 or 360
°
turn -
Halcyon 2000 is completed in the same direction.
(b) The rate of change of heading does not exceed 3°/s;
i.e. the turn should take about 3 minutes to complete.
(c) The rate of change of heading must not fall below 0.2
of a degree per second during the 540° turn - Super
Halcyon 3, i.e. the 540° turn must not take longer than 45
minutes.
(d) The rate of change in heading is constant.
(e) Automatic calibration has been utilised by connecting
the brown wire from the compass at the junction box.
(Super Halcyon 3 Compass only)
(f) The compass is installed in a location free from
magnetic interference such as iron keels, engines,
loudspeakers etc. Consideration should also be given to
electrical cables that may carry excessive currents (e.g.
navigation lights).
(g) The compass is installed in a location as close to the
centre line of the boat as possible. Avoid areas such as
the fore peak and the sides of the hull where the effects
of pitch and roll are at their greatest.
(h) On steel hulled vessels, the compass will need to be
installed above decks away from the effects of the hull.
Ideally, the compass should be installed 4-5m (12-16ft)
above deck level.