Raymarine autopilot control unit - Manual (Page 45)

28 ST7000 Plus Autopilot Control Unit Owner’s Handbook
3.3 Adjusting Autopilot Performance
The response level and rudder gain can be adjusted during normal
operation using the resp key.
The calibration settings for response and rudder gain (see Dealer Setup
in Chapter 4) are restored when the system is powered on.
Changing the Response Level
The response level controls the relationship between the autopilot’s
course keeping accuracy and the amount of helm/drive activity.
• Response Level 1, AutoSeastate (Automatic Deadband), causes
the autopilot to gradually ignore repetitive movements of the vessel
and only react to true variations in course. This provides the best
compromise between power consumption and course keeping
accuracy, and is the default calibration setting.
• Response Level 2 (Minimum Deadband) provides the tightest
course keeping possible by applying an amount of rudder
proportional to the heading error. However, tighter course keeping
results in increased power consumption and drive unit activity.
• Response Level 3 (also Minimum Deadband) provides the tightest
course keeping possible by introducing yaw damping.
The response can be changed at any time. To do so:
1. Press either the resp key or press the +1 and -1 keys together
momentarily to display the Response screen.
2. Use the up-arrow and/or down-arrow keys to change the response
level.
118ch03.p65 07/01/99, 12:42 28