EndRun Tempus LX GPS, User Manual

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T e m p u s L X G P S U s e r M a n u a l 84
A P P E N D I X F
RMC (Recommended Minimum Specific GPS Data)
The RMC sentence identifies the UTC time of fix, status, latitude, longitude, and date. An example is
below:
$GPRMC,173831.00,A,3827.030,N,12244.020,W,,,200508,,,A*0D<CR><LF>
Msg ID $GPRMC
Field 1 173831.00 UTC time of fix (hhmmss.ss)
Field 2 A GPS receiver warning (A=data valid, V=data not valid)
Field 3 3827.030 Latitude in ddmm.mmm
Field 4 N Direction of latitude (N=north, S=south)
Field 5 12244.020 Longitude in dddmm.mmm
Field 6 W Direction of longitude (W=west, E=east)
Field 7 empty field Speed over ground
Field 8 empty field Course made good
Field 9 200508 Date of fix (ddmmyy)
Field 10 empty field Magnetic variation
Field 11 empty field Direction of magnetic variation
Field 12 A Fixed text “A” shows that mode is autonomous
Checksum *0D
Msg End <CR><LF>
ZDA (Time and Date)
The ZDA sentence identifies the time associated with the current 1PPS pulse. Each sentence is
transmitted within 500 milliseconds after the 1PPS pulse is output and tells the time of the pulse that
just occurred. Until the Tempus LX starts getting GPS fixes the time output will be in the year 1980.
After the Tempus LX is getting fixes then the time output will be UTC along with the day, month,
year and local offset information. An example is below:
$GPZDA,175658.00,20,05,2008,07,00*69<CR><LF>
Msg ID $GPZDA
Field 1 175658.00 UTC time at 1PPS (hhmmss.ss)
Field 2 20 Day (01 to 31)
Field 3 05 Month (01 to 12)
Field 4 2008 Year (1980 to 2079)
Field 5 07 Local zone hour, offset from UTC (- for east longitude)
Field 6 00 Local zone minutes, offset from UTC
Checksum *69
Msg End <CR><LF>