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Re: [Discuss-gnuradio] Using two daughter boards in USRP1.

From: Josh Blum
Subject: Re: [Discuss-gnuradio] Using two daughter boards in USRP1.
Date: Thu, 20 Sep 2012 12:43:32 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120827 Thunderbird/15.0

On 09/20/2012 09:46 AM, Sajjad Safdar wrote:
> Hello, I am trying to use two daughter boards in one USRP1. I have
> RFX400 on one side A and TVRX on side B. When i try to use two
> seprate terminals to test the daughter cards in such a way that
> RFX400 is transmitting and TVRX is recieving on the same USRP1 device
> using uhd_fft and benchmark_tx.py for sending data, but this does not
> work. when i run uhd_fft the scanning works but when i try to run
> benchmark_tx in another window, it gives some error tha can not find
> usrp device, how can i make it possible to work with both cards on
> the same device rather than using two different devices.

You need to use the source and sink block within the same process. Since
uhd_fft and benchmark* are two different apps, you may have better luck
re-creating those apps within one GRC flowgraph.


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