On Mon, June 15, 2015 1:23 am, David J Taylor wrote: > I don't think either system is good enough as a "microsecond" level server, but either is fine for "tenth millisecond" level.
The BeagleBone Black has the advantage that you can run one of the timers from an external input, so you can use the 10MHz from your GPSDO to drive the timer (takes care of temperature variations of the system clock), and have the timer captured based on the PPS input (eliminates interrupt latency as a factor in capturing the timer). With that setup you should be able to get into the high nanoseconds stability range. For transfer to other systems the BBB Ethernet supports PTP, so you should be able to get just under microsecond level synchronization between systems on the same LAN. Here is someone working on connecting a NavSpark GPS to a BBB. I don't think I have seen his name on the 'Nuts list, but I don't recall for sure. http://blog.dan.drown.org/ -- Chris Caudle _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
