8-1-2 Section 8: Autopilots
ST290 Instrument System Owner’s Handbook
Autopilot functions
Raymarine 150G and 400G autopilots
TheRaymarine 150G and 400G autopilotsuse the internalGyroPlus yaw
sensor. This provides enhanced course keeping using AST (Advanced
Steering Technology). These autopilots can be calibrated automatically
using an AutoLearn feature.
Raymarine T150 and T400 autopilots
The Raymarine T150 and T400 autopilots do not have a GyroPlus yaw
sensor fitted, but provide full basic functionality, using the Raymarine
steering algorithm without AST.
ST290 system data
The autopilot uses the following ST290 system information:
• Wind information, for Wind Vane steering.
• Waypoint information, to provide track control.
• Boat speed information, to optimize steering and track-keeping per-
formance.
• Course over ground (COG) to set compass heading.
You can also use an autopilot with any navigation aid (GPS/Loran) or
wind instrument that transmits National Marine Electronics Association
(NMEA) 0183 data.
81183_2 S8.book Page 2 Tuesday, May 6, 2003 9:08 AM
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