Re: [Discuss-gnuradio] Using Gnuradio Companion to send identical signals with usrp1 to XCRV2450 and sbx daughter boards

[mario behn]

Hi Marcus,

the USRP1 has been bought with all the components in july 2012 and the UHD driver and Gnuradio 

have been installed at beginning of July 2013 using the installation script running on Ubuntu 12.04 LTS.

From my screenshot in the file I find this line:

[...]

linux; GNU C++ version 4.6.3; Boost_1048DD; UHD_003.005.003-87-g8f4000ff

using Volk machine: avx_64_mmx_orc

-Loading firmware image ...

[...]

I hope this helps. Thanks

Mario

On Mon, Jul 22, 2013 at 8:48 PM, Marcus Leech <address@hidden> wrote:

It would be useful to see your exact flow-graph.

 

Also, how old is your USRP1?

 

What rev of UHD code are you running?

 

 

on Jul 22, 2013, mario behn <address@hidden> wrote:

Hi,

 

sorry for sending the email to both list, but it seems it might be a joint topic. Please advise ma if I'm wrong.

 

However here is my situation:

 

I have send identical signals (1MHz sinusoidal) to these two daughter boards and measured the actual output signal with a spectrum analyzer as described is the linked file:

 

https://dl.dropboxusercontent.com/u/54059714/2013JUL22_Eval_USRP1_XCVR2450_SBX_pub.pdf

 

The XCRV gives the DC-leakage at carrier, my signal at carrier + 1 MHz and the image at carrier - 1 MHz. But the SBX only gives a 14 MHz wide something I cannot classify.

 

Maybe the SBX is broken? Maybe it doesn't work correctly with the USRP1 and Gnuradio?

 

Any advise is appreciated.

 

Mario

 

 

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