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Re: [Discuss-gnuradio] Problem with the USRP2 not sending both the real
From: |
Josh Blum |
Subject: |
Re: [Discuss-gnuradio] Problem with the USRP2 not sending both the real and complex values to the computer |
Date: |
Tue, 07 Dec 2010 07:46:23 -0500 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.12) Gecko/20101027 Thunderbird/3.1.6 |
With gr-usrp2 driver, I believe that this can be fixed by setting
is_quadrature to true here:
http://gnuradio.org/cgit/gnuradio.git/tree/usrp2/firmware/lib/db_basic.c?h=next#n69
-Josh
With UHD, quadrature is the default setting. And its configurable. :-)
On 12/07/2010 06:39 AM, Alan Jones wrote:
> Hi
>
> I am having some problems with the USRP2 not sending back to the PC both the
> real and complex parts of the receive signal. I get the real component of
> the signal but the complex part is just zeros. The signal that is being
> receive is transmitted from the same USRP2 board. I am using the Basic RX &
> TX boards, they are connected by two cables. I have test the Basic TX board
> by pugging it into a scope and I get both wave forms out. I have attached a
> copy of my code, it generates 1024 sample long chirp which is repeated every
> second. It then writes only the first 256 000 samples to a file.
>
> I suspected that there is a flag I have missed during the start up of the
> USRP2 but I can not find it the documentation I have. Any help would be
> great.
>
> Regards
>
> Alan Jones
>
>
>
>
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