On Tue, Jul 12, 2011 at 12:06 PM, Michael Eder <[email protected]> wrote: > We are using a Garmin GPS 16x. I should clarify these are platforms in the > middle of the ocean so the sole time source is the GPS and PPS.
Ok, then your requirements are modest. Typically when you see someone using GPS he is setting up some servers for a lab or campus. In that case just get a better GPS. New units with prices under $100 work at the nano second level while Garmin nav GPSes are microsecond devices at best but with the serial data (as you have found) notoriously not well synchronized. But for your purpose even the 16x is orders of magnitude better then you really need. Opening up the tolerance makes senses on a buoy. You could not even use one of the better timing GPS on a buoy because they require a fixed location antenna. You can reduce the problem with the nmea data by turning off unneeded sentences if you have not already done so. Chris Albertson Redondo Beach, California _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
