Nexus Autopilot R-1600, Инструкция по установке и эксплуатации

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English AUTOPILOT
8-22
1.1.5 P2, Damping of compass heading [SEA]
Possible settings are [0] = Minimum to [9] = Maximum.
Set by the APC routine.
This setting is a combination of yaw dead-band (compass
sensitivity) and compass damping. The minimum setting may only
be used under calm sea conditions to avoid unnecessary rudder
correction due to compass acceleration errors.
Smaller boats and high speed boats, which are subject to more
acceleration in lighter seas will have to use higher settings. Larger
and more stable boats can use lower settings since there is less
compass disturbance.
Default setting should work on most boats in light to moderate sea
conditions. Following seas, no matter how rough, may require lower
settings to catch course error trends quickly in order to minimise
excessive yaw.
6.3.3 P3, Counter Rudder [CRD]
Possible settings are [0] = Minimum to [9] = Maximum.
This setting senses the rate of change of heading and gives
additional rudder corrections as a boat approaches the desired
heading. Its effect is to rapidly catch the tendency to yaw in a
quartering sea, provide initially high rudder control when making a
large course change and to decelerate the swing of the bow, as a
boat approaches the desired course.
Course holding with heavy and difficult to steer boats, is greatly
improved when using this feature. Too little counter rudder, will
allow the boat to overshoot on large course changes. Too much will
stop the vessel turning fast enough through the required course
change, requiring several successive corrections before easing up
to the new heading.
To optimise counter rudder, initially set it to minimum and adjust the
rudder (see, [RUD] 5.3.2). Increment the counter rudder one step at
a time, while testing with greater than 40
°
course changes, until the
boat achieves an overshoot of 1
°
to 2
°
or less. Remember, that any
air in the hydraulic system will prevent precision control.
6.3.4 P4, Damping of wind [WSE]
Possible settings are [0] = Minimum to [9] = Maximum. Default
setting is [2].