Problem with trace

[edelvoilier]

I'm using OCPN 3.3.1931 on windows 7.

My GPS is connecting to my computer with USB port. Is seting up on 9600bd. My problem is not the connection but my trace ! I don't understand why my trace show me back and forth of my vessel

I tried to configure a latency of cap and speed but the problem is the same.

So my trace (below) is false and statistics of it also (speed, miles..)



Thanks in advance for your help

[bcn]

What does the NMEA debug window show when enabled?
Or just a short sequence with VDR.

[edelvoilier]

Thanks for your help.

I've just read the VDR file and it show me the same problem.
I'will looking my gps to see what's mater.