Re: [Discuss-gnuradio] test_usrp_standard_tx Could not set frequency

[Eric Blossom]

On Mon, Sep 07, 2009 at 03:39:33PM -0500, address@hidden wrote:
> Hello,
> 
> I am new to the GNU Radio.  I have been following the steps outlined in 
> http://gnuradio.org/trac/wiki/UbuntuInstall, and I am at the point where I am 
> testing.
> The command:
> ls -lR /dev/bus/usb | grep usrp
> shows a single USRP, which is correct.
> 
> usrp_benchmark_usb.py
> Passes everything but the 32 Mb/s test.
> 
> But when I try to run:
> test_usrp_standard_tx
> I receive this output:
> 
> which:    0
> interp:   16
> rf_freq:  -1
> amp:      10000.000000
> nsamples: 3.2e+07
> Subdevice name is XCVR2450 Tx
> Subdevice freq range: (2.4e+09, 6e+09)
> mux: 0x000089
> baseband rate: 8e+06
> Fail 4200000000.000000
> terminate called after throwing an instance of 'std::runtime_error'
>   what():  Could not set frequency.
> Aborted
> 
> 
> This is on a USRP, with two XCVR2450 daughterboards.  I looked through the 
> wiki, mailinglist, and the web, but I did not find anyone who had this 
> problem.
> 
> Thank you for your help,
> Brian Proulx

The XCVR2450 covers 2.4-2.5 GHz and 4.9 to 5.85 GHz.  Try tuning to
something in these ranges.

Eric