8-2-6 Section 8: Autopilots
ST290 Instrument System Owner’s Handbook
Figure 2-7: Changing course in AUTO mode
Adjusting autopilot response
You can adjust the performance of Raymarine autopilot systems by
changing the response level. This is the only user adjustment you should
need to make to the autopilot on a regular basis.
The response level controls the relationship between the autopilot’s
course keeping accuracy and the amount of helm/drive activity.
You can set the default power-up response level, by using the Pilot Basic
or Advanced Calibration (see Section 8, Chapter 5) to adjust the default
response level.
However, when using your autopiloton a day-to-daybasis, you can make
temporary adjustments to the response level. By doing this you can set
the autopilot performance to suit different conditions.
150G & 400G autopilot systems
150G and 400G autopilot systems have nine response level options:
Level 1 gives the least pilot activity to conserve power, but may
compromise short-term course-keeping accuracy.
Levels4to6 shouldgive goodcoursekeeping withcrisp, well-controlled
turns under normal operating conditions.
Level 9 gives the tightest course keeping and greatest rudder activity, but
may lead to a rough passage in open waters as the autopilot may ‘fight’
the sea.
Port Starboard
oror
D3320-2
81183_2 S8.book Page 6 Tuesday, May 6, 2003 9:08 AM
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