Navitron NT888G MK2, Руководство по эксплуатации

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NT888G MK2 AUTOPILOT OPERATING MANUAL
1.4 Adjusting Steering Performance – (Section 2.19 – 2.22) … (Continued).
(Manual Adjustment of Controls).
(iv) Use the “ CONTROLS ” key to select “YAW” and
set a value of “1” using the rotary (+/-) illum. key.
(v) Use the “ CONTROLS ” key to select “ COUNTER ”
and set a value of “1” using the rotary (+/-) illum.
key.
The vessel should now be steady on the required heading under manual steering
(Autopilot STANDBY Mode) or engaged (Autopilot ON).
(vi) Check that the Autopilot is ON (engaged) and note the steering
performance in terms of Understeer or Oversteer as follows:-
(vii) Use the “
CONTROLS ” key to select “ RUDDER ” and increase or
decrease the Rudder Control value (1 to 9) using the rotary (+/-) illum.
key to optimise the straight line steering performance in terms of
Understeer/Oversteer.
Large deviations or protracted
periods off the Heading Set due to
insufficient rudder application in
response to Yaw: -
Typical stretched
‘S’ characteristic
of Understeer
Action required: -
Increase Rudder
Control Setting.
(Clockwise)
Understeer Characteristics
Oversteer Characteristics
Autopilot applying too much rudder
causing vessel ‘weave’ which may
increase to a tight ‘S’ pattern: -
Typical tight ‘S’
characteristic of
Oversteer
Action required: -
Reduce Rudder
Control Setting.
(Anticlockwise)