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Garmin GMI 20 Installation Instructions page 4

Digital marine instrument display
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Sentence
Description
GLL
Geographic position (latitude and longitude)
GRMB
GPS data
GRME
GPS position error data
GSA
GNSS DOP and active satellites
GSV
GNSS satellites in view
HDG
Heading, deviation, and variation
HDM
Heading, magnetic
HDT
Heading, true
MDA
Meteorological composite
MTW
Water temperature
MWD
Wind direction and speed
MWV
Wind speed and angle
RMB
Recommended minimum navigation information
RMC
Recommended minimum specific GNSS data
THS
Heading sensor data
VHW
Water speed and heading
WPL
Waypoint location
XTE
Cross track error
You can purchase complete information about National Marine
Electronics Association (NMEA) format and sentences from:
NMEA, Seven Riggs Avenue, Severna Park, MD 21146 USA
(www.nmea.org)
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Ltd. or its subsidiaries. These trademarks may not be used without the express
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®
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