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Glossary
Term Meaning
AST
(Advanced Steering
Technology)
AST (Advanced Steering Technology) is Raymarine’s unique advanced steering
algorithm. It uses inputs from a wide variety of sensors to tune the autopilot’s
operation to provide superior control of the boat in any condition.
AutoLearn Self-learning calibration feature available on S1G, S2G and S3G systems.
AWG American Wire Gauge
CE Marked on products that comply with defined European Community stan-
dards
CR pump Constant Running hydraulic pump
EMC
(Electromagnetic
Compatibility)
When powered up, all electrical equipment produces electromagnetic fields.
These can cause adjacent pieces of electrical equipment to interact with one
another, and this can degrade their performance. By following the EMC guide-
lines in this handbook, you can minimize these effects by ensuring optimum
Electromagnetic Compatibility (EMC) between equipment.
Fluxgate Standard Raymarine compass supplied with core pack
GPS Global Positioning System
GyroPlus Raymarine’s GyroPlus yaw sensor that measures the boat’s rate of turn. It is
built into the S1G, S2G and S3G systems.
Hz Hertz (cycles per second)
I/O drive Inboard/Outboard or stern drive
MARPA Mini Automatic Radar Plotting Aid
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 non-SeaTalk equipment using the NMEA 0183 protocol.
SeaTalk SeaTalk is Raymarine’s proprietary communication system. It links products 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.
Yaw Boat’s rate of turn (°/sec)
81273_1.book Page 67 Thursday, November 10, 2005 8:25 AM
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