On Fri, Sep 25, 2009 at 12:00:34AM +0400, Alexander Chemeris wrote: > Power will be taken from USRP 6V, clock output will be SMA to > connect to USRP directly. Frequency control will be accessible > over RS-232 (aka COM-port) with simple text-based protocol. We're > going to use ATMega for this. Ideally we want tighter integration > with USRP, so it can be controlled via the same USB connection, > so you can control clocks right from GnuRadio. But to date we can't > figure out how to do this cleanly. All suggestions are welcome.
Have you any sense of how much additional phase noise - sampling clock jitter - the ATMega will introduce compared to the TXCO Matt uses ? This impacts SNR... especially with higher nyquist n subsampling. -- Dave Emery N1PRE/AE, d...@dieconsulting.com DIE Consulting, Weston, Mass 02493 "An empty zombie mind with a forlorn barely readable weatherbeaten 'For Rent' sign still vainly flapping outside on the weed encrusted pole - in celebration of what could have been, but wasn't and is not to be now either." _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio