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Re: [Discuss-gnuradio] Interpretting results from usrp_rx_cfile.py

From: L. Miguel Bazdresch Sierra
Subject: Re: [Discuss-gnuradio] Interpretting results from usrp_rx_cfile.py
Date: Thu, 18 Jan 2007 08:12:06 -0600
User-agent: Thunderbird (X11/20061206)

Bahn William L Civ USAFA/DFCS, el 01/17/07 17:37:
What I got in all cases was basically a flat line (-3 to +3) except for
in the vicinity of sample #530, which looks like an inverted sinc pulse
with a peak amplitude of about -10000 (the first stream, which is made
up of the first float value in each sample pair), and what looks like an
extremely heavily damped sine wave (the second stream) with a peak
amplitude of about 20,000 and roughly centered at the same place as the
sinc pulse.
This makes absolutely no sense to be whatsoever. Can anyone shed any
light on this?

I can't, but I also see a similar spike:


I haven't figured it out, but it seems to be harmless, in the sense that I was able to process my data without any apparent ill effects. I haven't had a chance to look into it beyond that.

Miguel Bazdresch Sierra

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