TeeJet RX 400p - Manual (Page 127)

RX 400p
6-5 98-05044
R1
Table 6-4 GLL Data Message Defined
Field Description
ddmm.mmmmm Latitude in degrees, minutes, and decimal minutes
s s = N or s = S, for North or South latitude
dddmm.mmmmm Longitude in degrees, minutes, and decimal minutes
s s = E or s = W, for East or West longitude
hhmmss.ss UTC time in hours, minutes, and seconds of GPS position
s Status, s = A = valid, s = V = invalid
*cc Checksum
Carriage return and line feed
6.5.3 GSA Data Message
The GSA message contains GPS DOP and active satellite information. Only
satellites used in the position computation are present in this message. Null fields are
present when data is unavailable due to the number of satellites tracked. Table 6-5,
breaks down the GSA message into its components. This message has the following
format:
$GPGSA,a,b,cc,dd,ee,ff,gg,hh,ii,jj,kk,mm,nn,oo,p.p,q.q,r.r *cc
Table 6-5 GSA Data Message Defined
Field Description
a Satellite acquisition mode M = manually forced to 2D or 3D, A = automatic swap
between 2D and 3D
b Position mode, 1 = fix not available, 2 = 2D fix, 3 = 3D fix
cc to oo Satellites used in the position solution, a null field occurs if a channel is unused
p.p Position Dilution of Precision (PDOP) = 1.0 to 9.9
q.q Horizontal Dilution of Precision (HDOP) = 1.0 to 9.9
r.r Vertical Dilution of Precision (VDOP) = 1.0 to 9.9
*cc Checksum
Carriage return and line feed