Thanks Nick, that's perfect.
Il giorno 27 marzo 2012 18:05, Nick Foster <n...@ettus.com> ha scritto: > On Tue, Mar 27, 2012 at 7:26 AM, Vincenzo Pellegrini <wwvi...@gmail.com>wrote: > >> Hi Nick, thanks for the answer. >> >> Everything clear. >> Just a further question. >> Would a 0V-mean, 3.3V peak-to-peak sinusoid be correct as a reference >> signal for the B100? >> > > Use a 5-10dBm reference with no DC component. This corresponds to 1-2V p-p. > > --n > > >> >> regards >> >> vince >> >> >> >> Il giorno 23 marzo 2012 18:30, Nick Foster <n...@ettus.com> ha scritto: >> >> On Fri, Mar 23, 2012 at 10:18 AM, Vincenzo Pellegrini >> <wwvi...@gmail.com>wrote: >>> >>>> Hi Nick, >>>> I have noticed that "j101" onboard the B100 outputs a 64 MHz reference. >>>> >>>> Could it be possilble to feed that signal somehow into a second USRP >>>> B100 to be used as a reference? >>>> >>> >>> You would have to go through some gymnastics (read: soldering) to get >>> that reference into the second B100, and some code rework to recalculate >>> clock rates based on a 64MHz (or divisor of 64MHz) instead of 10MHz. >>> >>> >>>> >>>> Could it be possible as an alternative to lock two B100 to an external >>>> 10 MHz reference while still working at 8Msps sample rate ? >>>> >>> >>> Yes, this is what the ref in connectors are for. The external reference >>> is independent of the sample rate. The B100s will continue to operate >>> normally, except locked to each other. >>> >>> --n >>> >>> >>> >>>> >>>> my best regards >>>> >>>> vincenzo >>>> >>>> >>>> >>>> >>>> Il giorno 23 marzo 2012 16:54, Nick Foster <n...@ettus.com> ha scritto: >>>> >>>> On Fri, Mar 23, 2012 at 3:41 AM, Vincenzo Pellegrini <wwvi...@gmail.com >>>>> > wrote: >>>>> >>>>>> Hi everybody, >>>>>> >>>>>> just a very quick question: >>>>>> >>>>>> is it possible to enslave the clock of a B100 to the clock of another >>>>>> B100 via the "REF IN" input or in some other way? >>>>>> More precisely, is there a way to extract the clock signal from a >>>>>> B100 and feed it into another B100 to enslave the latter to the former? >>>>>> >>>>>> It would be great to be able to keep them in frequency and phase >>>>>> synch that way. >>>>>> >>>>> >>>>> Vincenzo, >>>>> >>>>> The ref in input on B100 is intended to accept a 10MHz signal. >>>>> Multiple B100s can be synchronized by using a common reference, but there >>>>> is no facility to lock two B100s to each other without a common external >>>>> reference. >>>>> >>>>> --n >>>>> >>>>> >>>>>> >>>>>> thank you >>>>>> >>>>>> vince >>>>>> >>>>>> -- >>>>>> Vincenzo Pellegrini >>>>>> http://www.youtube.com/user/wwvince1 >>>>>> >>>>>> _______________________________________________ >>>>>> Discuss-gnuradio mailing list >>>>>> Discuss-gnuradio@gnu.org >>>>>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>>>>> >>>>>> >>>>> >>>> >>>> >>>> -- >>>> Vincenzo Pellegrini >>>> http://www.youtube.com/user/wwvince1 >>>> >>> >>> >> >> >> -- >> Vincenzo Pellegrini >> http://www.youtube.com/user/wwvince1 >> > > -- Vincenzo Pellegrini http://www.youtube.com/user/wwvince1
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