Hi Unfortunately there are no “stock” boards to do this sort of thing. If this is a commercial requirement, there are companies who do this kind of thing on a custom basis. Figure on a few thousand dollars NRE and a minimum order of a few hundred to get somebody interested. At the “couple ps” level, the NRE may be a bit above the few thousand level. Also expect to supply a full spec requirement when you go shopping ….
Bob > On Oct 29, 2018, at 2:38 AM, Ferran Valdés <van...@hotmail.com> wrote: > > > > Thanks everybody for your answers. > > > > @ Bob kb8tq > > > > Due to a development time constraint, I am looking for a board which has all > the implemented hardware In order to have a good starting point. My aim is to > let the oscillator to be disciplined by the GPS in normal operation, and at a > given moment, an algorithm to take over the adjusting process without > upsetting the PLL. My idea is to develop the control loop which will be able > to synchronize one oscillator to another. > > > > @ ew > > > > A 1 PPS will be exchanged in between nodes (each node would have a GPSDO). > > > > @ Tom Van Baak > > > > Yes, a GPSDO is already self adjusting, but for my project, I would like to > either use a GPS or to synchronize one node’s oscillator on another. > > > > The synchronization goal is in the order of ps level. > > > > @ Mark Sims > > > > I have just taken a brief look at Lady Heater. I will go through the manual > and get back to it. But what this program does is similar to what I am > intending to do, so that’s quite nice to know that the Trimble Thunderbolt is > a suitable board ! > > > > I am searching for the time interval, but I have not seen the parameter yet. > > > > This is the command to set the DAC value --> 0x8E-A0 | Set/Request DAC > values | 0x8F-A0 > > > > Within the Report Packet 0x8F-AC, the bytes 16-19 indicate “Estimate of > UTC/GPS offset”, is this the time difference ? > > > > > > I have seen that on eBay, there are listed some GPSDO modules, which claim to > have a “trimble” or “symmetricon” GPSDO inside, and they provide a hardware > platform to get access to the GPSDO parameters, however, it depends on the > board which is mounted inside if the adjustment loop can be externally > governed. Anybody got any experience with any of those boards? > > > > Kind regards, > > Ferran > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
