User Manual

GM862-GPS Software User Guide

1vv0300729 Rev. 5 - 05/07/07

5.4.5

RMC - Recommended Minimum Specific GNSS Data

This sentence reports Time , date, position, course and speed data.

Table H contains the values for the following example:

$GPRMC,161229.487,A,3723.2475,N,12158.3416,W,0.13,309.62,120598, ,*10

Table H: RMC Data Format

Name Example Units Description

Message ID $GPRMC RMC protocol header

UTC Time 161229.487 hhmmss.sss

Status A A=data valid or V=data not valid

Latitude 3723.2475 ddmm.mmmm

N/S Indicator N N=north or S=south

Longitude 12158.3416 dddmm.mmmm

E/W Indicator W E=east or W=west

Speed Over

Ground

0.13 knots

Course Over

Ground

309.62 degrees True

Date 120598 ddmmyy

Magnetic

Variation

degrees E=east or W=west

Mode A A=Autonomous, D=DGPS, E=DR

Checksum *10

<CR> <LF> End of message termination

NOTE:

SiRF Technology Inc. does not support magnetic declination. All “course over ground” data are

geodetic WGS84 directions.