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Re: [Discuss-gnuradio] question about the sampling rate

From: Marcus D. Leech
Subject: Re: [Discuss-gnuradio] question about the sampling rate
Date: Sun, 26 Feb 2012 13:09:28 -0500
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20111108 Fedora/3.1.16-1.fc14 Thunderbird/3.1.16

On 02/26/2012 12:11 PM, Ahmed Alsawi wrote:
Hi all,
I am new to gnuradio and i am trying to make simple transmission and reception. I want to understand the sampling rate of the uhd sink and source and how to choose it
and the sampling rate of the blocks in the flow graph.

when running on sine of 100 kHZ and sampling rate of 0.5 MHz and same sampling rate for uhd
I get UUUUUUUUUUUUUUUUUUUUUUUUUU ,it means under sampling,Right?
How to avoid it ???

Sample rate is really only relevant at the edges, and when calling the filter synthesis modules, most interior blocks have no concept of
  sample rate.

'U' means under-run the producer (in this case, your program) can't keep up with the consumer--the UHD device.

Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium

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