Glossary
45
NMEA
The NMEA (National Maritime Electronics Association) protocol is an interna
tionally accepted serial communication interface standard for sharing data
between electronic equipment. Raymarine products can share information
with nonSeaTalk equipment using the NMEA 0183 protocol.
response
The autopilot response level controls the relationship between course keeping
accuracy and the amount of helm/drive activity.
rudder gain
Rudder gain is a measure of how much helm the autopilot will apply to correct
course errors. The higher the setting the more rudder will be applied.
SeaTalk
SeaTalk is Raymarine’s proprietary communication system. It links the prod
ucts to provide a single, integrated system sharing power and data.
SeaTalk bus
This refers to the continuous SeaTalk system connecting together a series of
Raymarine units.
SM
Statute (land) mile.
VHF
Very High Frequency (radio).
WindTrim
WindTrim (wind response) controls how quickly the autopilot responds to
changes in the wind direction. Higher wind trim settings will result in a pilot
that is more responsive to wind changes.
XTE
Cross track error.
Yaw
The boat’s rate of turn (°/sec).
Term
Meaning
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