I've done it before with the Palisade driver in non-polling mode. It works, but you have to rely on the timing of a serial port and apply your best guess for a delay. If he's trying to detect phase differences between multiple thunderbolts, the serial port + OS combination might be too jittery to measure that difference.
On the other hand, I suspect using a FatPPS and the ATOM driver would be even less jittery than polling (if it worked), so maybe it's a moot point. On Wed, Nov 30, 2011 at 4:56 PM, <b...@lysator.liu.se> wrote: > Hi Justin, > > > There are some issues using a Thunderbolt with NTP. See > > http://www.eecis.udel.edu/~mills/ntp/html/drivers/driver29.html (the > stuff > > about event polling). > > The Trimble Palisade (aka Acutime, Acutime 2000, Acutime Gold) has a nice > feature called Event input. > > "Event input > The Acutime Gold accepts an external event input in the shape of an RS-422 > pulse. The external event pulse input is supported on Port A (pins 6 and > 7). The Acutime Gold transmits a TSIP time packet (0x8F-0B or 0x8F-AD) in > response to the event input. The TSIP packet increments the event count > field for each event received. The event time stamp is generated within > 488 nanoseconds of its arrival at the Acutime Gold interface connector." > > The prefered mode for the palisade driver is to use this feature. When the > driver was adapted for Thunderbolt is was seen as a problem that the Tbolt > receiver lacked the "Event input". > > I have not runt a Tbolt with NTP, but it should be very doable with the > Palisade driver in the "Thunderbolt"-mode. Another option could be the > Parse-driver > > http://www.eecis.udel.edu/~mills/ntp/html/drivers/driver8.html > > running in the Trimble TSIP mode. (mode 10) > > -- > > Björn > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
