Nexus FDX-kit, Installation And Operation Manual

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NexusRace SW English
35
Note: a mast head rigged boat requires more down wind correction than a
fractional rig.
When you are tacking the apparent wind angle will be distorted due to mast twist, up-
wash and the fact that the boat is heeling. All this together will give an error on the
apparent wind angle and also on the true wind angle. In order to get correct values for
Polar tables etc. it is very important that the wind angle and wind speed is correct.
The up-wash correction set in these boxes are the values for port and starboard. They
will only be used when tacking and the you may set the window for when you want to
use it (see Settings
– Advanced)
Factory calibration
Each transducer is calibrated from factory. Each transducer come with calibration
certificate. Enter the values on the certificate for 000, 045, 090,135 etc. This is
essential to get correct values. For the nWind, the values are already entered into the
transducer
Installation offset and wind shear
If the transducer is mounted of-set to the boat, you may enter the misalignment here.
This is also the value used in the automatic calibration to correct for wind share.