Glossary 115GlossaryTerm Meaning° DegreesA AmpAutoTrim The AutoTrim setting determines the rate at which the autopilot applies‘standing helm’ to correct for trim changes caused by varying wind loads onthe sails or superstructure.AWG American Wire GaugeCE Marked on products that comply with defined European Communitystandardscounter rudder Counter rudder is the amount of rudder the autopilot applies to try to preventthe boat from yawing off course. Higher counter rudder settings result inmore rudder being applied.DC Direct currentEMC(ElectromagneticCompatibility)When powered up, all electrical equipment produces electromagnetic fields.These can cause adjacent pieces of electrical equipment to interact with oneanother, and this can degrade their performance. By following the EMCguidelines in this handbook, you can minimize these effects by ensuringoptimum Electromagnetic Compatibility (EMC) between equipment.Fluxgate Standard Raymarine compass supplied with ST4000+ autopilot systemft Foot (1 ft = 305 mm)GPS Global Positioning SystemHz Hertz (cycles per second)in Inch (1 in = 25.4 mm)kg Kilogram (1 kg = 2.2 lb)km Kilometrelb Pound (1 lb = 0.45 kg)m Metre (1 m = 39.4 inches)mm Millimeter (1 mm = 0.04 inches)nm Nautical mileNm Newton metreNMEA The NMEA (National Maritime Electronics Association) protocol is aninternationally accepted serial communication interface standard forsharing data between electronic equipment. Raymarine products can shareinformation with non-SeaTalk equipment using the NMEA 0183 protocol.
