User`s guide

Chapter 5 - I/O Commands
Motorola GPS Products - M12+ User's Guide Revision 6.X 09FEB05
185
GPGSA (GPS DOP AND ACTIVE SATELLITES)
NMEA-0183 Format
Set response message rate:
$PMOTG, GSA, yyyy*CC<CR><LF>
where:
yyyy = update rate 0..9999 seconds
CC = optional checksum
Note - the asterisk (*) is not present unless the optional checksum is present
Response to above command:
$GPGSA, a, b, cc, dd, ee, ff, gg, hh, ii, jj, kk, mm, nn, oo, p.p, q.q,
r.r*CC<CR><LF>
where:
a = sat acquisition mode M = manual (forced to operate in
2D or 3D mode)
A = Automatic (auto switch 2D/3D)
b = positioning mode 1 = fix not available
2 = 2D
3 = 3D
cc,dd,ee,ff,gg,hh, = SVIDs used in solution
ii,jj,kk,mm,nn,oo (null for unused fields)
p.p = PDOP 1.0..9.9
q.q = HDOP 1.0..9.9
r.r = VDOP 1.0..9.9
CC = checksum