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DWG ID: 181-0101-00A
Date: 2003-09-26
must be preceded and followed by a dollar sign ($) and must be in upper case. The
following variables are allowed: $GPRMC, $GPGLL, $GPGGA, $GPVTG, CHKSUM,
LAT, LONG, UTC, OFFSET, DATE, ESPD, NSPD, USPD, SOG, TRACK, ALT,
NUMSAT,TEMPC,TEMPF.
For example:
GTEXT Latitude: $LAT$, Longitude: $LONG$
$GPRMC, $GPGLL, $GPGSA, and $GPVTG, are all valid NMEA 0183 type sentences.
Data will be displayed in the specified sentence format. When included, CHKSUM adds
valid checksum to NMEA sentences. Note that when CHKSUM is specified, the NMEA
string header must include the leading $ character. For example, these specified strings
would be entered this way:
GTEXT $$GPRMC$$CHKSUM$
LAT displays the latitude.
LONG displays the longitude.
UTC displays the time in UTC format, as derived from the GPS satellites.
OFFSET displays the current time offset between the GPS satellites, and UTC (GMT)
time.
ESPD displays speed in easterly direction. (W will be included if movement is in a
westerly direction)
NSPD displays speed in northerly direction. (S will be included if movement is in a
southerly direction)
USPD displays rate of climb or descent.
SOG displays the speed over ground, in km/h.
TRACK displays the direction of travel, in degrees.
ALT displays altitude in m.
NUMSAT displays the number of satellites used to derive position information.
TEMPC displays the temperature in degrees Celsius.
TEMPF displays the temperature in degrees Fahrenheit.
