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Re: [Discuss-gnuradio] Getting started with the USRP/RFX2400 and underfl
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From: |
Martin Braun |
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Subject: |
Re: [Discuss-gnuradio] Getting started with the USRP/RFX2400 and underflows |
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Date: |
Tue, 8 Jul 2008 10:03:50 +0200 |
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User-agent: |
Mutt/1.5.16 (2007-06-09) |
On Mon, Jul 07, 2008 at 04:32:47PM -0500, Jason Uher wrote:
> #Connect the sink to a SIN source
> src0 = gr.sig_source_c (48000, gr.GR_SIN_WAVE, 350, 0.5)
> fg.connect (src0, ut)
This doesn't seem right. You're creating a sine wave w/ amplitude 0.5.
In order to fully use the dynamic range of your USRP D/A converters, the
signal needs to be somewhere in +-2^15. All you're transmitting is very
quiet noise.
Regards,
--
Martin Braun
Institut fuer Nachrichtentechnik
Universitaet Karlsruhe
http://www.int.uni-karlsruhe.de
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