I wondered when the conversion factor noise was going to show up in the conversation. I had asked time-nuts about this a long time ago. I was experimenting with optical isolation since lightning seems to be my friend. Ended up with minicircuit transformers and cable. Later discovered an HP article something like 1987 that showed how to do the conversion with the optical units of the time. I did tinker with SFPs and it was painful due to the connectors. So seeing the nice boards that have been made was great and just maybe enough to get me to make a set of boards to experiment with again. Great thread. Regards Paul WB8TSL
On Fri, Mar 22, 2019 at 6:01 AM Hal Murray <[email protected]> wrote: > > [email protected] said: > > The infrastructure is easily enough interfaced to, even a simple > > microprocessor can do it, using switches allows for distribution with > known > > characteristics. > > It would be interesting to measure the delays through a switch. > > The switches are retiming the data stream. It has to buffer up enough > data > before it starts sending to make sure that it won't run out before the end > of > packet if the switch clock is fast and the source clock is slow. There is > also bit/byte synchronization, and crossing a clock boundary before things > get > started. > > > > -- > These are my opinions. I hate spam. > > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
