B&G Triton2 Operator's Manual page 63

Wind
MHU (Masthead unit) alignment
This provides an off set calibration in degrees to compensate for any
mechanical misalignment between the masthead unit and the
center line of the vessel.
To check the masthead unit alignment error we recommend you
use the following method which involves a sailing trial:
• Sail on a starboard tack on a close hauled course and record the
wind angle, then repeat the process on a port tack
• Divide the difference between the two recorded numbers and
enter this as the wind angle off set
If the starboard apparent wind angle is greater than the port angle,
then divide the difference by 2 and enter this as a negative offset.
If the port angle is greater than the starboard then divide the
difference by 2 and enter this as a positive offset.
Enter the offset it into the MHU Align calibration field.
True wind angle
Ú Note:
This option is only available if an H5000 CPU is connected
to the system.
There are two methods of calibrating TWA:
• monitoring true wind direction from tack to tack
• use the compass to verify the angles the yacht is tacking or
gybing through
Start the TWA calibration process for either method by setting the
boat up to do a number of tacks upwind or gybes downwind in as
steady conditions as possible.
• Method 1 - Monitor True Wind Direction changes
If an error is seen in true wind direction, then the following rule
applies:
- If true wind direction is being shown as a lift each time you
tack then True Wind Angle is reading too wide, half the error
must be subtracted from the TWA correction table
- If true wind direction is being shown as a header each time
you tack then True Wind Angle is reading too narrow, add half
the error to the TWA correction table
Software setup | Triton2 Operator manual
63