On Sat, Oct 25, 2008 at 4:51 AM, David Woolley <[EMAIL PROTECTED]> wrote: >> Of course not ( and the GPS18 only gives 1us accuracy anyway) but the OP >> wanted accuracy to 1ms, which is trivial for both the computer and the gps. >> > I think there have been reports that the 1 microsecond is actually a > conservative figure.
Wouldn't the serial port itself prevent anything better than ≈104 µs because of the commonly used 9600 baud rate on the serial line? Even at the max possible (according to Garmin) baud rate of 38400, 26 µs would seem to be the best possible. Or does the PPS signal not depend on the serial baud rate? I have just acquired a GPS18LVC and am starting to wade into configuring on FreeBSD, but I am not expecting anything better than 100 µs at 9600 baud. -- RPM _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
