[USRP-users] b200 Overflows

Marcus D. Leech mleech at ripnet.com
Mon Sep 29 13:15:01 EDT 2014


On 09/29/2014 01:11 PM, Simon Brown wrote:
>
> Marcus,
>
> Just FWIW I'm seeing the 'out of sequence' error with the USRP1 and 
> I'm sure it's on a USB3 device.
>
> Simon Brown G4ELI
> http://v2.sdr-radio.com
>
The FX2 USB controller on the USRP1 and B100 was designed *long* before 
USB-3. 0 was even a dream.  It doesn't surprise me that some USB-2.0
   devices don't work right with USB-3.0 controllers.


> *From:*Marcus D. Leech [mailto:mleech at ripnet.com]
>
> USB-3 controllers very-often aren't happy "downshifting" to support 
> USB-2.0 devices.  The USRP1 may just be one of those.   I've found the 
> same
>   with the RTLSDR dongle devices as well--they *don't work* on a 
> USB-3.0 port.
>

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