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).
Also, you will need http://www.tapr.org/kits_fatpps.html (or something like it) if you want to use its PPS signal with NTP. On Wed, Nov 30, 2011 at 4:08 AM, Mark C. Stephens <[email protected]>wrote: > Hey Thanks for the reply, I have 2 uses for the GPSDO, ref clock for NTP > server or 10mhz ref clocks for the labs. > > If I find one is not suitable for one task, I can try it on another. > > I have built a few GPSDO and regularly change oscillators, so I have a > good idea about the circuitry and performance. > > Having said that it gets very hard to approach a professionally designed > unit. > > Actually, I am toying with the idea of 3 separate Thunderbolts connected > to NTPD using thunderbolt drivers. Each of the Trimble's will use a > separate antenna (3 active antenna cost less than a splitter, go figure) > > But I am beginning to ask myself why?! Isn't it good enough already? > > > mark > > Date: Tue, 29 Nov 2011 12:20:45 +0100 > From: Azelio Boriani <[email protected]> > To: Discussion of precise time and frequency measurement > <[email protected]> > Subject: Re: [time-nuts] z3801a, z3805a, z3815a, z3816a, thunderbolt > and thunderbolt II > Message-ID: > <cal8xpmnzspuxnim-hbmzgp5-sfqadxroq19_yznkqgojmc3...@mail.gmail.com > > > Content-Type: text/plain; charset=ISO-8859-1 > > A long-time data collection? I can test an HP58503A (I think it is the > Z3801A), I have the Z3815A and the TBolt. Of course I need time to test... > > On Tue, Nov 29, 2011 at 10:37 AM, Hal Murray <[email protected] > >wrote: > > > > > [email protected] said: > > > Hi All, Risking opening a potential can of worms, has anyone have a > specs > > > roundup of GPSDO? > > > > > Ideally, Maximums of Phase noise, Jitter, accuracy... > > > > One of the variables is the quality of the antenna, both position and > loss > > in > > the cable. > > > > > > -- > > These are my opinions, not necessarily my employer's. I hate spam. > > > > > > > > > > _______________________________________________ > > 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. > > > > > > _______________________________________________ > 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. > _______________________________________________ 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.
