Usrp2 & dbsrx2

Hi everyone,

Does one have to make any changes to the hardware when working with a
DBSRX2
and a USRP2, as was the case with the original DBSRX?

Are there any python examples that demonstrate how to work with the
DBSRX2
on the USRP2?

Nick

On Mon, 2011-01-10 at 10:45 -0500, Nick O. wrote:

Hi everyone,

Does one have to make any changes to the hardware when working with a
DBSRX2 and a USRP2, as was the case with the original DBSRX?

Are there any python examples that demonstrate how to work with the
DBSRX2 on the USRP2?

If you haven’t moved to UHD yet, you will have to upgrade. If you have
moved to UHD, update to the latest code and rebuild. No changes should
be required to your Python code (if it’s already using UHD).

–n

On 01/10/2011 10:45 AM, Nick O. wrote:

No hardware changes are required, but only UHD supports the DBS_RX2.

If you update to the latest GIT for both Gnu Radio and UHD, it should
“just work”.


Principal Investigator
Shirleys Bay Radio Astronomy Consortium

On Mon, Jan 10, 2011 at 12:04 PM, Ben A. [email protected] wrote:

Dig these two links, in order:
http://code.ettus.com/redmine/ettus/projects/uhd/wiki
http://www.ettus.com/uhd_docs/manual/html/build.html

Then just install gnuradio as usual.

Ben

Wow. Slow down there. I am a newbie.

I downloaded and compiled the gnuradio code sometime in late December
2010.
However from your response, I am guessing I should first download
(checkout), compile and install UHD, then finally compile and install
gnuradio. (Just thinking aloud here but a confirmation would not hurt
:-)).

Meantime, are there any python examples that demonstrate how a USRP2 and
DBSRX2 setup should work? Included in this setup is a log periodic
antenna
(LP0926) that covers the 900MHz to 2.6GHz range

On 01/10/2011 11:43 AM, Nick O. wrote:

antenna (LP0926) that covers the 900MHz to 2.6GHz range

Once you have followed the directions for building and installing UHD,
and the Gnu Radio branch that supports UHD, then I’d recommend
spending some quality time with Gnuradio Companion
(gnuradio-companion) to put together simple Rx flow-graphs.

With GnuRadio Companion, you don’t necessarily need conventional
“examples”. It’s a GUI-based “flow-graph builder”.

For the most part, applications (at least in the UHD universe) don’t
really need to “know” much about the daughtercard that is plugged into
the hardware. In this case, you’d create a UHD source, at an
appropriate input bandwidth, set the desired frequency, and then
“do stuff” with the result–like plotting on a graphical FFT sink,
etc, etc.


Marcus L.
Principal Investigator
Shirleys Bay Radio Astronomy Consortium

Thanks for the info. I will look into that ASAP!