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GBX Reference Manual
56
4.8.5 RMC Data Message
The RMC message contains recommended minimum specific GPS
data. Table 4-6 breaks down the RMC data message into its
components. This message has the following format:
$GPRMC,hhmmss.ss,a,ddmm.mmm,n,dddmm.mmm,w,z.z,y.y,ddm
myy,d.d,v *cc<CR><LF>
Table 4-6 RMC Data Message Defined
Field Description
hhmmss.ss UTC time in hours, minutes, seconds of the GPS position
a Status is valid if a = A, status is invalid if a = V
ddmm.mmmmm Latitude in degrees, minutes, and decimal minutes
n S = N or s = S, for North or South latitude
dddmm.mmmmm Longitude in degrees, minutes, and decimal minutes
w S = E or s = W, for East or West longitude
z.z Ground speed in knots
y.y Track made good, referenced to true north
ddmmyy UTC date of position fix in day, month, year
d.d Magnetic Variation in degrees
v Variation sense v = E = East, v = W = West
*cc Checksum
<CR><LF> Carriage return and line feed
4.8.6 SAT Data Message (GBX-8A and GBX-PRO
Only)
The SAT message contains GPS satellite tracking status information.
Table 4-7 breaks down the SAT data message into its components.
This message has the following format:
$PASHR,SAT,d1,n(d2,d3,d4,f1,c)*cc<CR><LF>