B&G Zeus Touch 12 - Manual (Page 46)

46 | Autopilot | Zeus Touch installation manual
Autotuning
The autotune feature will run the boat through several tests and then automatically set the
most important steering parameters.
Autotune is not required for the autopilot to function as it is preset with steering parameters
that should suit most boats in the 30-50 foot range.
You can manually set all parameters that are set during autotuning. Refer next page.
Seastate fi lter
The Seastate fi lter is used to reduce rudder activity and autopilot sensitivity in rough weather.
OFF Seastate fi lter is disabled. This is default
AUTO Reduces rudder activity and autopilot sensitivity in rough weather by an
adaptive process. The AUTO setting is recommended if you want to use the
seastate fi lter
MANUAL Linked to the steering response control settings described previously. It may
be used to manually fi nd the optimum combination of course keeping and
low rudder activity in rough but steady sea conditions
Setting sailing parameters
 Note: Sailing parameter settings are only available if the boat type is set to Sail.
Tack time
When performing a tack in WIND mode, the rate of turn (tack time) can be adjusted. This will
give single-handed sailors time to handle the boat and the sails during a tack.
A turn performed without shifting wind side, will also be made at a controlled turn rate.
Range Change per step Default Units
2 - 50 1 12 seconds
Tack angle
This value is used to preset the course change used when tacking in AUTO mode. By pressing
the left/right arrow keys the course will change as much as this value.
Range Change per step Default Units
50 - 150 1 100 °
Wind function
With wind function set to Auto, the autopilot will automatically
select between apparent and true wind steering. Auto is default and
recommended for cruising.
When the boat is running or on a broad reach, there is a heightened
chance it will surf on the waves. This may lead to signifi cant changes
in boat speed, and thereby changes in apparent wind angle. True
wind steering is therefore used to prevent undesired corrections by
the autopilot when heading downwind (or close to), while steering
to apparent wind is used when beating or reaching.
Apparent wind steering is preferred when you want to maintain
maximum boat speed without continuous trimming of the sails.
VMG optimizing
You can optimize the VMG to wind. When selected the function will be active for 5–10
minutes after a new wind angle has been set and only when beating.
Layline steering
Layline steering is useful when navigating. Cross Track Error (XTE) from the navigator will keep
the boat on the track line. If the XTE from the navigator exceeds 0.15 nm, the autopilot will
calculate the layline and track towards the waypoint.
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