Javier Serrano wrote:
Yes, exchanging data over a link will always harm its timing accuracy/precision performance, irrespective of whether you steer clocks (our case) or you exchange values or both. In fact, as I said to Jeremy in another thread I tend to see clock steering (i.e. PLL) as a limit case of interchanging values, where this exchange would happen at every single clock tick. So you end up with lots more information, up to you to low-pass filter to get rid of high frequency phase noise.
Actually, you can see this as a Shannon information channel, analog or digital. The produced information is the phase difference between the master and slave oscillator, but it may be encoded digitally over other clocks. However, since the information capacity is never properly estimated the long term phase information quality can vary alot. The systematic noise sources added is also almost never properly analyzed.
Ah well. Cheers, Magnus _______________________________________________ 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.
