Gary E. Miller : > > That's excellent news. 0.5msec jitter is as good as we could have > > expected and exactly what one would predict from a max error of 1msec > > due to polling interval. The long-term NMEA/USB drift is consistent > > with previous observations by Hal Murray and myself. > > Nice when theory and practice agree. I wonder if there is a USB 2.0 > equivalent of the PL2303 which would give us a 125 microSec poll? > > Might be worth asking navisys about that. Maybe. But that would require that they qualify a new and probably more expensive adapter part. We should get this puppy shipping and let them see some ROI before we push that. -- Eric S. Raymond