Alpha Marine Systems Alpha 3000 Installations- und Betriebshandbuch - Seite 5
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SECTION 1.0 OPERATION:
Your autopilot has been specifically designed for ease and simplicity of operation and as
a result has very few controls. The function and proper use of each of these controls are
discussed below.
POWER
Pilot power is controlled by a pair of push buttons on the Control Unit. POWER ON
switches the pilot On and selects that station for control in multiple station systems.
POWER OFF shuts Off the entire system.
COURSE SELECTOR
The course selector knob is calibrated in degrees and oriented so that course changes are
natural, i.e. a course change to the left is made by turning the top of the knob to the left.
Compass heading is calibrated in degrees magnetic and is portrayed as in a standard
compass rose. Course changes may be made in any amount. The pilot will always turn
the shortest direction to achieve the desired heading unless lead slowly with the knob.
AUTO-TRIM
This control turns the automatic trimming system On and OFF in the Control Unit. With
the switch in the "OFF" position, the Autopilot will steer a course which is somewhat
dependent on the wind and sea conditions. With AUTO-TRIM "ON", the Control Unit
will continually compute a trim correction for the vessel, thus maintaining a far more
accurate course. This dynamic trim compensation is important because the trim
correction is dependent on wind and sea conditions and thus ever changing.
During course changes, AUTO-TRIM should be turned OFF if the change is large or
requires a change of tack, since a tack change requires a trim correction in the opposite
direction.
Trim may be left on but vessel heading will vary for approximately 1 to 2 minutes.
YAW
The Yaw Control permits the helmsman to adjust the response of the autopilot and select
the maximum amount of yaw permissible. Each vessel is different, but in general a mid-
range setting will be found to provide adequate helm response and low power
consumption. In heavy following seas the response may be quickened by turning the
Control toward MIN. However, this will increase the power consumption. It may be
adjusted toward MAX in a head sea to allow the vessel to ride easier to the sea.
**CAUTION**
**NOTE**