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Re: [Discuss-gnuradio] USRP seems to work...but

From: Eric Blossom
Subject: Re: [Discuss-gnuradio] USRP seems to work...but
Date: Thu, 14 Apr 2005 14:43:29 -0700
User-agent: Mutt/1.5.6i

On Thu, Apr 14, 2005 at 12:04:56PM -0400, Anastasopoulos Achilleas wrote:
> Dear all,
> After updating my FC3 and reinstalling the
> latest tarballs I think I have a distribution with a
> working USRP module (with Basic Rx,Tx and 4937 daughterboards).
> Thanks for the comments/suggestions.
> However there are still some issues that I have not resolved:
> benchmark_usb.py works fine and gives me a max of 32MBps rate.
> It also gives a warning:
> usrp_standard_rx::set_decim_rate: WARNING rates > 128 result in incorrect
> gain.
> How should I interpret this?

Uhh, how about "the decimation rate is > 128 and the amplitude of
your received data could be really screwed."  
Translation: "Hurry up Matt and finish the half-band filter..."

> Also, some of the examples in usrp import the module as
> "from gnuradio import usrp"
> but in the code they use
> "usrp_tx = usrp1.sink_s (0, tx_interp)"
> The way I fixed this is to import usrp1 explicitely
> "from gnuradio import usrp1"
> Is this the right way to fix this problem?
> I would expect that
> "from gnuradio import usrp"
> also import all versions of usrp, ie, 0 and 1
> Any thoughts on this one?

Thanks for pointing this out.  s/usrp1/usrp/g

Fixed in CVS.  It also required a fix to gr-usrp.


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