Raymarine ST70 Instrument, User Reference Manual

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Chapter 7: Vessel Settings
The following table gives possible values for the various vessel settings and their
effect on performance. For full details refer to the
ST70 Autopilot Controller/
SmartPilot X Commissioning Instructions .
Setting Effect Values Default
Auto Release Allows manual override on Auto mode On or Off On
Rudder Gain Amount of helm applied to correct
course errors 1 to 9 4
Counter Rudder Amount of rudder applied to prevent
yaw 1 to 9 5
Rudder damping Prevents hunting 1 to 9 2
Auto Trim Rate at which helm applied to correct
trim changes OFF, 1 to 6 1
Auto Turn Amount of course change in Auto Turn Number of degrees 90
Response Levels Controls relationship between course
accuracy and helm activity
1 to 3 – minimizes
4 to 6 – normal condi-
tions
7 to 9 – tightest 5
Off course alarm Alarm sounds when off course by this
amount for more than 20 seconds 15 to 40 degrees in 1-
degree steps 15
Turn Rate Limit Limits turn rate when over 12 knots 1 to 30 degrees in 1-
degree steps 5
Power steer Controls helm when using a joystick Proportional
Bang-Bang Proportional
Latitude Com-
pass Damping Adapts for higher latitudes if no latitude
data available On or Off On
Rudder Limit Prevents rudder from hitting endstops Degrees 20
Rudder Offset Offset from amidships 0
Reverse Rudder
Reference Reverses the phase of the reference Port or Starboard
Auto Tack Angle through which to tack Degrees 90
Gybe Inhibit Prevents gybes Enable or Disable Enable
Wind Selection Use true or apparent wind in Wind Vane
mode True or Apparent
Wind Trim Controls response to wind direction
changes 1 to 9 5