Re: [Discuss-gnuradio] misterious symetrical signal

[nexy_sm]

Hm, nothing like USRP1 is not supported is written here:
http://files.ettus.com/uhd_docs/manual/html/calibration.html
under the section of USRP1 it is even suggested to read.

But how to reduce IQ imbalance then?

On Tue, Dec 11, 2012 at 3:48 PM, Josh Blum-3 [via GnuRadio] <[hidden email]> wrote:

On 12/11/2012 03:32 AM, nexy_sm wrote:

> Guys, any suggestions?
>
> I got exactly this error:
>
> address@hidden ~]$ uhd_cal_rx_iq_balance --verbose
> linux; GNU C++ version 4.4.6 20120305 (Red Hat 4.4.6-4); Boost_104100;
> UHD_003.004.003-221-g9d6f9492
>
>
> Creating the usrp device with: ...
> -- Opening a USRP1 device...
> -- Loading FPGA image: /usr/local/share/uhd/images/usrp1_fpga.rbf... done
> -- Using FPGA clock rate of 64.000000MHz...
> Error: This board does not have the CAL antenna option, cannot
> self-calibrate.

The utilities require transceiver boards like RFX, WBX, SBX. Also
unfortunately, requires FPGA support, which is not in USRP1.

-josh

>
> Thanks again
>
>
>
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