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Re: [Discuss-gnuradio] unexpected underruns (was: Re: no subject)

From: Rui ZOU
Subject: Re: [Discuss-gnuradio] unexpected underruns (was: Re: no subject)
Date: Tue, 1 Aug 2017 11:26:43 -0400

Here are the two flowgraphs I have used. I have tried to attach the two files in my first email. Probably failed in doing that. If still not seen, please let me know so I will try again. Thanks for your help.

Running the first flow graph will cause GRC stop responding instantly, while the second one can run for a little while and produce lots of 'L' before going not responsive.


On Tue, Aug 1, 2017 at 11:09 AM, Marcus Müller <address@hidden> wrote:

Hi Rui,

don't know, to me, it looks like replying didn't work out great, since my mail client showed your mail in a new thread. Really, replying to a mailing list mail should be nothing more than hitting the "reply" or "reply all" button.

Anyway, even the slowest PC/laptop/Raspberry Pi/… I could think of would be able to deal with these rates, so there's very, very likely something wrong with the GNU Radio flowgraph you're using. Maybe you'd want to share that!

Best regards,


On 08/01/2017 04:59 PM, Rui ZOU wrote:
Hi Marcus,

Sorry for leaving the title empty, that's the first time to post to a mailing list. This is also the first time to reply, no sure if I replied correctly.

I use 390.625k as the sampling rate because this is the lowest I can get using the Ettus X310 without giving me a warning saying that the sampling rate cannot be provided by the hardware. The application is just transmitting a file using GMSK modulation on the two daughter boards of X310.


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