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Re: [Discuss-gnuradio] Sampling with multiple USRP N210s with one host c

From: Aditya Dhananjay
Subject: Re: [Discuss-gnuradio] Sampling with multiple USRP N210s with one host computer
Date: Thu, 31 Oct 2013 23:05:31 -0400

On Thu, Oct 31, 2013 at 4:54 PM, rmsrms1987 <address@hidden> wrote:
Hi Everyone,

I recently discovered that Ettus offer a way of synchronizing up the eight
USRPs with the following clock distribution system:


Out of curiosity, how would one be able to connect and sample with eight
separate USRPs with one host computer.  Would you need eight separate
ethernet ports?  That seems like more than what a typical motherboard would
be able to handle.

Or can the USRPs all be connected to a server, which can be individually
accessed through the host computer?

Understanding how to do this will be extremely beneficial in order to gather
some ideas for a project.

Thank you very much in advance,

Hi Rob,

I am not sure about eight, but my setup has 3 USRPs. All the USRPs and my host are connected to the same Gig-Ethernet switch.

If you feel that your USRP-to-Host networking bandwidth is the bottleneck, maybe you could try running your wireless experiments over a thinner channel to reduce the sampling rate, and hence, the data transmitted between the USRP and host.

Good luck.


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