Try to disable all sentences you don´t use. The OT2 is may be overloaded… Had this issue in another application a while ago. Look for the $PGRMO command in the technical manual.
Johannes From: [email protected] [mailto:[email protected]] On Behalf Of Keith VE7GDH Sent: 26. juli 2010 23:47 To: [email protected] Subject: [tracker2] OT2m... 1600 kmh I have a friend with an OT2m. I had it here for re-programming a few weeks ago. It is normally connected to a Garmin GPS 18. It seems to work OK when moving, but when stationary, it often indicates that it is travelling at absurd rates... as much as 1600 kmh. He is visiting nearby and I loaned him another GPS which is behaving. I have his Garmin GPS 18 here and I've been watching it in VisualGPS. I couldn't get a lock indoors near a window (new metal roof) where my own GPS receivers can often get a lock. I have it outside now and it didn't have any trouble figuring out where it was. Looking at the "survey window" in VisualGPS, it hasn't wandered more than 100-200 feet all morning. It is outputting the following NMEA sentences. $GPRMC shows speed over ground is zero when testing $GPGGA $GPGSA $GPGSV $PGRME $GPGLL $GPVTG shows ground speed is zero when testing $PGRMV (couldn't find info on RMV) $PGRMF (couldn't find info on RMF) $PGRMB not showing any velocity towards destination $PGRMM Scott - any ideas? Here's a sample. $GPRMC,211858,A,4848.9269,N,12327.3273,W,000.0,276.8,260710,018.8,E*6F $GPGGA,211858,4848.9269,N,12327.3273,W,2,07,1.3,163.9,M,-18.0,M,,*7C $GPGSA,A,3,,07,08,,15,,19,,26,28,,51,2.2,1.3,1.9*31 $GPGSV,3,1,12,05,08,252,00,07,38,109,33,08,75,084,53,11,17,109,00*7A $GPGSV,3,2,12,15,26,313,39,17,23,182,00,19,24,045,42,24,04,023,00*76 $GPGSV,3,3,12,26,46,299,51,28,79,255,49,39,00,000,00,51,32,158,42*74 $PGRME,2.8,M,3.6,M,4.6,M*23 $GPGLL,4848.9269,N,12327.3273,W,211858,A*3B $GPVTG,277,T,258,M,000.0,N,0000.0,K*73 $PGRMV,0.0,0.0,-0.0*71 $PGRMF,570,163153,260710,211858,15,4848.9269,N,12327.3273,W,A,2,0,277,2,1*0D $PGRMB,,,,,,K,,,*2D $PGRMM,WGS 84*06 73 es cul - Keith VE7GDH -- "I may be lost, but I know exactly where I am!"
