Thanks Karthik! I will take a look at the attachment. That is great, I want to eventually sample 4 real channels, and want to avoid the overrun/underrun problems.
Thanks for your help!! -Dan --- On Wed, 3/10/10, Karthik <[email protected]> wrote: From: Karthik <[email protected]> Subject: Re: [Discuss-gnuradio] Multiple Channel USRP Confusion To: "dan s" <[email protected]> Cc: [email protected] Date: Wednesday, March 10, 2010, 12:52 PM Dan, I have a solution that I have been using for a while. I have attached the relevant files and a working example. You will need to put all the files except the .grc file into your .grc_gnuradio directory and restart grc. Not sure if this is a good way to do it, but it works for me. the helper blocks are the core, the dual_a, dual_b are heir blocks that add on top of this one. I also included a quad source block for real inputs using 2 LFRX in case you are interested. I have changed the fusb parameters such that I can records data at high sampling rates (4MSps) without getting overruns. Hope that helps. Regards, Karthik On Tue, Mar 9, 2010 at 10:33 PM, dan s <[email protected]> wrote: Hi all, I am looking to simultaneously record two real signals (not with IQ) using a single LFRX daughtercard. How can I do this with GNURadio companion? I have spent a while looking at the USRP Source and Dual USRP Source blocks and could not figure out. I am looking to record from Side A with RXA and RXB. I tried setting the RX Antenna setting to RXAB and used the complex to real block to extract channel RXA, and complex to imaginary block to extract RXB. I don't think this worked properly. I also tried using two separate USRP source blocks, each on side A but one for RXA and the other for RXB. When I did this I got an error related to already having one USRP side A block running. Any help would be greatly appreciated Thanks, Dan _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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