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Re: [Discuss-gnuradio] Using USRP w/o Daughterboard's

From: Eric Blossom
Subject: Re: [Discuss-gnuradio] Using USRP w/o Daughterboard's
Date: Fri, 11 Nov 2005 01:47:29 -0800
User-agent: Mutt/1.5.6i

On Thu, Nov 10, 2005 at 05:18:26PM -0700, Robitaille, Michael wrote:
> Thanks Eric, I got my direct interface to the USRP working and the
> usrp_oscope.py and ursp_fft.py examples work.  I am very glad that the
> software defaults to a Basix Rx DB configuration when it finds no DB.
> One item that I am trying to chase down is that when I input a square wave
> at low frequencies (1 kHz to 10 kHz) I see a droop in the amplitude.  The
> signal at the AD9862 input pins looks good.  Can the droop be cause by the
> decimation filter? 

Did you turn off the DC removal control loop in the FPGA?


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