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Re: [Discuss-gnuradio] USRP underrun problems

From: Matt Ettus
Subject: Re: [Discuss-gnuradio] USRP underrun problems
Date: Fri, 04 Jun 2010 09:18:33 -0700
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20100430 Fedora/3.0.4-2.fc12 Thunderbird/3.0.4

On 06/04/2010 03:47 AM, Chris_Spain wrote:

Hello, I trying to implement DVB-H Standar on GNU Radio and USRP.

In software, all run ok, but now I'm doing the first test with USRP and I
have a problem that I have no idea how fix it. When I try to send with a
Flex  900, freq=850M, fft-Lenth=2048, occupied-tones=1512 the program print
UuUuUuUu, USRP underrun ¿How I fix it?


You should make sure you have realtime scheduling enabled. If you do, and still get underruns a lot of underruns, then your computer is not fast enough to run your program in real time.


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