Thanks so much, this is exactly what I am eventually trying to accomplish. Sampling 4 real signals using two LFRX daughtercards
Thanks, Dan --- On Wed, 3/10/10, Sebastiaan Heunis <[email protected]> wrote: From: Sebastiaan Heunis <[email protected]> Subject: Re: [Discuss-gnuradio] Multiple Channel USRP Confusion To: "Karthik" <[email protected]> Cc: "dan s" <[email protected]>, [email protected] Date: Wednesday, March 10, 2010, 1:13 PM Dan I haven't used GNURadio companion before, but what you need to do is the following: Set the mux to (0xf1f0f1f0). This will connect ADC0 (which is the first ADC on side A) to the I input of the first DDC in the USRP. ADC1 (which is also on side A) will be connected to the I input of the second ADC. Then you just wire up your two chains in your GNURadio apps and use a deinterleaver to connect the appropriate channel to the right blocks in your app. There is an example app somewhere in the Gnuradio installation directory that shows how to receive 4 real channels with 2 LFRX boards. Sebastiaan 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
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