On Wed, Oct 23, 2013 at 10:33 PM, Marcus D. Leech <[email protected]> wrote: > On 10/23/2013 04:19 PM, Alexandru Csete wrote: >> >> Hi Marcus, >> >> I believe the behavior is different from source to source and >> basically depends on whether the source block takes advantage of the >> start/stop methods. For example, the Funcube Dongle Pro and Pro+ >> blocks are gnuradio audio source blocks that use the start and stop >> methods and therefore will not start reading samples until the flow >> graph is started. In other words, two funcube dongles will be more or >> less synchronized, except for the clock differences. I think it is the >> same for the UHD sources. >> >> On the other hand, I have observed that if I create an rtlsdr source >> block, after a few seconds it will start spitting OOOOOO out to the >> terminal until I start the flow graph. This indicates that the rtlsdr >> source is started as soon as it is created. >> >> Alex > > Interesting. I'll observe, out loud, that it would be useful for my current > coherence testing if the behaviour could be closer to "roughly > synchronized". > Not sure how easy that is to do for RTLSDR.
I think you can create one multi-channel source using 2 separate devices. That may get you close. I haven't tried this feature though so I don't know how it works. Alex _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
