The FC40 and RC42 compasses will store the calibration
and offset data in their own memory.
During the calibration, the compass will measure the
magnitude and direction of the local magnetic field. If the
local magnetic field is stronger than the earth’s magnetic
field (the local field is reading more than 100%), the
compass calibration will fail. If the local field is reading
more than 0%, you should look for any interfering
magnetic objects and remove them, or you should move
the compass to a different location. The (local) field
angle will guide you to the local interfering magnetic
object. See illustration on next page.
Calibration is made on the active compass.
If another model compass from Simrad or another
manufacturer is installed, refer to the instruction for that
compass regarding calibration.
Magnitude of local
field in % of earth’s
magnetic field.
Direction of local field
with respect to lubber
line. it can also be on
the reciprocal.
Lubber line
Lubber line
Summary of Contents for IS20 Combi
Page 6: ...IS20 Graphic Basic system IS20 Graphic Basic system with 2 sensors ...
Page 7: ...10 Introduction IS20 Expanded system ...
Page 21: ...BACKLIGHT 1 LANGUAGE NONE BACKLIGHT 2 DAMPING 1 FLYBRIDGE COCKPIT ...
Page 44: ...SimNet network small system ...
Page 45: ...52 Installation SimNet network medium system ...
Page 46: ...Installation 53 SimNet network expanded system ...
Page 66: ...Dimensional drawings ...
Page 67: ...Menu low chart ...