[USRP-users] UHD driver segault

Marcus D. Leech mleech at ripnet.com
Fri Apr 12 10:22:32 EDT 2013

> I sure have. That is where I got the baseband player I'm using. 
> Furthermore I'm using crc-dabmod and generated an ETI file with the 
> webtools from CRC.
> When I start the process it gives a warning which I don't quite 
> understand, it tells me the decimation and interpolation are odd and I 
> should expect CIC rolloff. Followed by:
> decimation = dsp_rate/samp_rate -> 33 = (32.768000 MHz) / (1.000000 MHz)
> However the sample rate I specify is 2048000. I tried doing this by 
> passing -r2048000 to the baseband player and by entering it into the 
> gnuradio block directly...
Well, if you're using a USRP1, 2048000 isn't a valid sample rate for the 

The hardware sample rate must be an integer fraction of 64e6.

Which tool are you using for the actual transmission part, after crc_dabmod?

Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium

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