Juha, Ordinarily, I would choose to feed a clock into xtal_in, this seems logical. However check out the Elonics patent:
http://www.uspto.gov/web/patents/patog/week49/OG/html/1385-1/US08324978-20121204.html The main thing to note is that square-wave clock input should be fed to xtal_in for the elonics chip. If you read that patent, it may give you some ideas about feeding a clock to xtal_in of other chips. Maybe other chips will also expect a sawtooth in the linear region of voltage swing, not rail-to-rail square wave. Note the comments in that patent on jitter at square wave, etc., Nobody on this thread has stated whether they are using e4000 or r820. That would probably be helpful. -- View this message in context: http://gnuradio.4.n7.nabble.com/dual-coherent-channel-rtl-sdr-tp43784p43851.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
