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Re: [Discuss-gnuradio] Range of samples values


From: Ujala Qasim
Subject: Re: [Discuss-gnuradio] Range of samples values
Date: Tue, 26 May 2009 20:30:11 +0600

Is there a way that I can view some of the data samples when the GNU Radio is running FM radio? That way I would be able to compare the actual data values that should be coming, and the values that I am getting through the interface I am using.

On Tue, May 26, 2009 at 8:04 PM, Jason Uher <address@hidden> wrote:
On Tue, May 26, 2009 at 1:24 AM, Ujala Qasim <address@hidden> wrote:
> I set my decimation rate to 200 and center_freq to 100.1, but the values of
> my samples is exceeding this range.

> Please specify the mistake that I'd be making...

This is very hard to do without any information at all regarding how
you captured the samples.

My first guess would be that you are doing on of the following:

Your flowgraph is modifying the values out of the usrp

 - or - (more likely)

Whatever tool you are using to read in the samples is not doing so correctly.

If you are using Linux I would install Octave and use the scripts in
"{trunk}/gnuradio/gnuradio-core/src/utils" to read the saved data from
a file_sink into Octave and check if you are still getting the same
kind of data.

Jason


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