Glossary 39
Glossary
Term Meaning
AST
(Advanced Steer-
ing 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 condi-
tion.
AutoLearn Self-learning calibration feature available on S1G, S2G and S3G sys-
tems.
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 guidelines in this handbook, you can minimize these effects by
ensuring optimum Electromagnetic Compatibility (EMC) between equip-
ment.
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
internationally 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 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.
Yaw Boat’s rate of turn (°/sec)
81307_1.book Page 39 Wednesday, December 19, 2007 11:17 AM
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