Re: [Discuss-gnuradio] FX2 firmware

[Eric Blossom]

On Thu, Apr 30, 2009 at 03:51:46PM +0200, Dominik Auras wrote:
> Hello,
>
> I was able to increase the USB bandwidth of the rx chain to 40Mb/s if tx  
> is completely turned off (test_usrp_standard_rx -D 4). However, with  
> test_usrp_standard_tx -i 8, it won't get beyond 32.7 Mb/s. I am ignoring  
> under/overruns for now.
>
> Is there a way test wether this is a limitation of my mainboard, the  
> program or the USRP?

It's hard to say.  If you've got a logic analyzer you can instrument
the inner loop of the firmware and see if that's the bottleneck or not.

Eric