Dear all, We would like to start working on holdover performance for White Rabbit [1]. This is a new domain for us. Our main use case is a WR switch losing its reference because someone disconnects a fiber. We can have redundancy, but it will take some time for a switch to change over to another reference. During this time, the oscillator in that switch will be free-running. We want to minimize the phase drift during that interval, which we think should be a couple of seconds maximum. We have never worked on holdover, and I am wondering if we can do something smarter than the obvious feeding of some constant voltage to the VCXO, based on averaging during the locked state. Does anybody know of any good references on holdover?
Thanks! Javier [1] http://www.ohwr.org/projects/white-rabbit/wiki _______________________________________________ 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.
