Re: [Discuss-gnuradio] Amount of data lost per overrun in USRP1

[Eric Blossom]

On Tue, May 05, 2009 at 05:40:48PM -0700, Karthik Vijayraghavan wrote:
> I am using a USRP1 to digitize 4 channels of data at a decimation of
> 32 using 2 LFRX. My computer can keep up with the digitizing for the
> most part but I get a relatively small number of overruns as well. I
> am using the trunk rev 10882 with default values for the fusb
> parameters.
> 
> 1. What is the amount of data lost per overrun?

>= 1 512 byte USB packet

> 2. Is there any way to know where exactly each of the overruns occurred?

No.  The usrp library code polls the FPGA about 10 times / second to
check for overruns.

Eric