Re: [Discuss-gnuradio] Benchmark_Tx Problem

[Marcus D. Leech]

On 04/06/2012 07:59 PM, sibar002 wrote:
> Hello Ben,
>
> Thank you for your response. I tried adjusting my bitrate in order to
> prevent this from happening, but I continue to have the same problem. I
> forgot to mention that I am running a dual OS on my computer (Windows and
> Linux). Could this be causing the overflow problem? Thank you again. I
> really appreciate any help or advice.
>
> Thanks
> Sam
Are you running your Linux partition as a VM, or you just dual-boot?

I've found that USB support through VMWare is *horrible*.


> Ben Hilburn-3 wrote:
> > Sam -
> >
> > (O)s indicate that there are overflows occurring - your computer is not
> > able to keep up with the data rate, and is falling behind in processing as
> > new packets arrive.
> >
> > Cheers,
> > Ben
> >
> > On Fri, Apr 6, 2012 at 1:39 PM, sibar002<address@hidden>  wrote:
> >
> > > Hello,
> > >
> > > I am using USRP 1 with the XCVR2450 daughterboard. I am also using Ubuntu
> > > 10.0.4 with gnuradio-3.5.1. I have tried running benchmark_tx/rx with the
> > > following parameters:
> > >
> > > ./benchmark_tx.py -f 2.45G -A J1 --spec B:0
> > > ./benchmark_rx.py -f 2.45G -A J1 --spec B:0
> > >
> > > I am not consistently able to receive the packets that are sent. I
> > > sometimes
> > > receive the initial packets, but then program begins to overflow ('O'). I
> > > have tried connecting the USRP1s directly with attenuators, and I have
> > > also
> > > tried using the antennas.  I have also used the uhd_fft.py program in
> > > order
> > > to make sure that I am receiving a signal. I am able to see a peak at the
> > > correct frequency when I am transmitting. I have also tried using the
> > > Basic_Tx/RX and LFTX/RX daughter-board and I obtain the same result. I
> > > would
> > > greatly appreciate any help or advise that anyone could give me. Thank
> > > you
> > > for your time and help.
> > >
> > > Sam
> > >
> > > --
> > > View this message in context:
> > > http://old.nabble.com/Benchmark_Tx-Problem-tp33645086p33645086.html
> > > Sent from the GnuRadio mailing list archive at Nabble.com.
> > >
> > >
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--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org