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Today's Topics:
1. Re: Spurs on a two signal test (Jeff Scaparra)
2. How to enable all gnuradio components? (ZaInzAiN Jj)
3. Re: How to enable all gnuradio components? (Josh Blum)
4. DBSRX2 set_bandwidth (Jahshan Bhatti)
5. uhd_fft.py (ZaInzAiN Jj)
6. Re: uhd_fft.py (Josh Blum)
7. UHD dissector for Wireshark (Alexander Chemeris)
----------------------------------------------------------------------
Message: 1
Date: Mon, 18 Mar 2013 20:19:06 -0400
From: Jeff Scaparra <[email protected]>
To: "[email protected]" <[email protected]>
Subject: Re: [USRP-users] Spurs on a two signal test
Message-ID:
<calwgea09mih++tjq-uwncgkq27ub0uazdujd5zjm8-ng40w...@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
No one responded to my question perhaps because it was a pretty basic
problem. I wanted to post what the problem was in case other newbies come
along and have the same problem. While I had a noise source it wasn't
strong enough to be an effective dither. I had my signals with an amplitude
of 1 and the noise set at .2 however it wasn't until the noise was around
2.5 that the spurs magically disappeared. I have learned that this isn't
magic and that this is what dithering is all about. I am including my grc
that I used to adjust the signals and noise amplitude to find the correct
dither. Also it was interesting to watch the noise floor drop as I added
more noise. It is important to turn the averaging up and increase the size
of the FFT.
Jeff N6SDR
On Sun, Mar 17, 2013 at 2:46 AM, Jeff Scaparra <[email protected]> wrote:
> Hello,
>
> I may very well be doing something wrong but I have been testing the USRP
> via a loopback with 40 db of attenuation. With the attached grc I am
> getting spurs that are only 5 db down from the source signals. Is this
> normal. Should I be doing something I am not?
>
> Thanks,
> Jeff
>
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Message: 2
Date: Tue, 19 Mar 2013 09:46:12 +0800 (SGT)
From: ZaInzAiN Jj <[email protected]>
To: "[email protected]" <[email protected]>
Subject: [USRP-users] How to enable all gnuradio components?
Message-ID:
<[email protected]>
Content-Type: text/plain; charset="iso-8859-1"
Dear all,
I use gnuradio 3.6.4, ubuntu 12.04 and usrp n210. I try ofdm example but still
error.?it turns out when I install gnuradio 6.3.4 there are many disable
components as below.
-- ######################################################
-- # Gnuradio enabled components ? ? ? ? ? ? ? ? ? ? ? ??
-- ######################################################
-- ? * python-support
-- ? * testing-support
-- ? * volk
-- ? * doxygen
--?
-- ######################################################
-- # Gnuradio disabled components ? ? ? ? ? ? ? ? ? ? ? ?
-- ######################################################
-- ? * sphinx
-- ? * gruel
-- ? * gnuradio-core
-- ? * gnuradio-companion
-- ? * gr-fft
-- ? * gr-filter
-- ? * gr-atsc
-- ? * gr-audio
-- ? * gr-comedi
-- ? * gr-analog
-- ? * gr-digital
-- ? * gr-noaa
-- ? * gr-pager
-- ? * gr-qtgui
-- ? * gr-trellis
-- ? * gr-uhd
-- ? * gr-shd
-- ? * gr-utils
-- ? * gr-video-sdl
-- ? * gr-vocoder
-- ? * gr-fcd
-- ? * gr-wavelet
-- ? * gr-wxgui
-- ? * gr-blocks
I use dependencies
sudo apt-get -y install libfontconfig1-dev libxrender-dev libpulse-dev \
gcc-4.7 g++ automake libtool python-dev libfftw3-dev \
libcppunit-dev libboost-all-dev libusb-dev fort77 \
libsdl1.2-dev python-wxgtk2.8 subversion git-core guile-1.8-dev \
libqt4-dev python-numpy ccache python-opengl libgsl0-dev \
python-cheetah python-lxml doxygen qt4-dev-tools \
libqwt5-qt4-dev libqwtplot3d-qt4-dev pyqt4-dev-tools \
libpcre3 libpcre3-dbg libpcre3-dev libpcrecpp0 \
python-wxgtk2.8 python-wxtools wx2.8-i18n libwxgtk2.8-dev libgtk2.0-dev \
autoconf libtool libosip2-dev libortp-dev \
libusb-1.0-0-dev g++ erlang bison flex \
apache2 php5 php5-xmlrpc php5-mysql php5-gd php5-cli php5-curl \
mysql-client mysql-server libphp-adodb libgd2-xpm libgd2-xpm-dev \
php5-curl php-pear
What I can do to enable all gnuradio components?
Thanks,
Zai
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Message: 3
Date: Mon, 18 Mar 2013 21:41:06 -0500
From: Josh Blum <[email protected]>
To: [email protected]
Subject: Re: [USRP-users] How to enable all gnuradio components?
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-1
This is the component summary, the verbose before the summary will tell
you what is missing.
Best guess if all the deps are really installed... you may have a system
with a boost that gnuradio has deemed unsuitable. Its possible to
circumvent this by adding -DENABLE_BAD_BOOST=TRUE to the cmake
configuration options.
-josh
On 03/18/2013 08:46 PM, ZaInzAiN Jj wrote:
> Dear all,
> I use gnuradio 3.6.4, ubuntu 12.04 and usrp n210. I try ofdm example but
> still error. it turns out when I install gnuradio 6.3.4 there are many
> disable components as below.
>
> -- ######################################################
> -- # Gnuradio enabled components
> -- ######################################################
> -- * python-support
> -- * testing-support
> -- * volk
> -- * doxygen
> --
> -- ######################################################
> -- # Gnuradio disabled components
> -- ######################################################
> -- * sphinx
> -- * gruel
> -- * gnuradio-core
> -- * gnuradio-companion
> -- * gr-fft
> -- * gr-filter
> -- * gr-atsc
> -- * gr-audio
> -- * gr-comedi
> -- * gr-analog
> -- * gr-digital
> -- * gr-noaa
> -- * gr-pager
> -- * gr-qtgui
> -- * gr-trellis
> -- * gr-uhd
> -- * gr-shd
> -- * gr-utils
> -- * gr-video-sdl
> -- * gr-vocoder
> -- * gr-fcd
> -- * gr-wavelet
> -- * gr-wxgui
> -- * gr-blocks
>
> I use dependencies
> sudo apt-get -y install libfontconfig1-dev libxrender-dev libpulse-dev \
> gcc-4.7 g++ automake libtool python-dev libfftw3-dev \
> libcppunit-dev libboost-all-dev libusb-dev fort77 \
> libsdl1.2-dev python-wxgtk2.8 subversion git-core guile-1.8-dev \
> libqt4-dev python-numpy ccache python-opengl libgsl0-dev \
> python-cheetah python-lxml doxygen qt4-dev-tools \
> libqwt5-qt4-dev libqwtplot3d-qt4-dev pyqt4-dev-tools \
> libpcre3 libpcre3-dbg libpcre3-dev libpcrecpp0 \
> python-wxgtk2.8 python-wxtools wx2.8-i18n libwxgtk2.8-dev libgtk2.0-dev \
> autoconf libtool libosip2-dev libortp-dev \
> libusb-1.0-0-dev g++ erlang bison flex \
> apache2 php5 php5-xmlrpc php5-mysql php5-gd php5-cli php5-curl \
> mysql-client mysql-server libphp-adodb libgd2-xpm libgd2-xpm-dev \
> php5-curl php-pear
>
> What I can do to enable all gnuradio components?
>
> Thanks,
> Zai
>
>
>
> _______________________________________________
> USRP-users mailing list
> [email protected]
> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>
------------------------------
Message: 4
Date: Mon, 18 Mar 2013 21:58:19 -0500
From: Jahshan Bhatti <[email protected]>
To: [email protected]
Subject: [USRP-users] DBSRX2 set_bandwidth
Message-ID:
<cajome12qsmgdnpfzkharnk9q4x0msqepecjyyaubemwmkha...@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
Shouldn't the order of clipping the bandwidth and converting from
complex bandpass to lowpass bandwidth be reversed in
dbsrx2::set_bandwidth?
~Jahshan
------------------------------
Message: 5
Date: Tue, 19 Mar 2013 15:20:29 +0800 (SGT)
From: ZaInzAiN Jj <[email protected]>
To: "[email protected]" <[email protected]>
Subject: [USRP-users] uhd_fft.py
Message-ID:
<[email protected]>
Content-Type: text/plain; charset="us-ascii"
Dear all,
Whether uhd_fft.py can be operated when sending data packets?
Thanks,
Zai
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Message: 6
Date: Tue, 19 Mar 2013 02:34:36 -0500
From: Josh Blum <[email protected]>
To: [email protected]
Subject: Re: [USRP-users] uhd_fft.py
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-1
On 03/19/2013 02:20 AM, ZaInzAiN Jj wrote:
> Dear all,
>
> Whether uhd_fft.py can be operated when sending data packets?
>
Basically no because the device can only be open in one process at a time.
Rather than use uhd_fft, you might make a GRC flowgraph with the
transmit chain and live DFT plotter.
-josh
> Thanks,
> Zai
>
>
>
> _______________________________________________
> USRP-users mailing list
> [email protected]
> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>
------------------------------
Message: 7
Date: Tue, 19 Mar 2013 17:46:46 +0400
From: Alexander Chemeris <[email protected]>
To: umtrx <[email protected]>, "[email protected]"
<[email protected]>, Gnuradio-discuss
<[email protected]>
Subject: [USRP-users] UHD dissector for Wireshark
Message-ID:
<CABmJbFWkoS=pzFuQQAR_GDsdwyc=iz2acfsz6bagxaqwtoo...@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
Hi all,
I apologize for cross-posting. Please reply to the mailing list you're
subscribed to.
Ivan Kluchnikov and I wrote a simple dissector for UHD-over-IP control
streams. We use it to debug UmTRX which is using UHD under the hood,
but I thought it might be useful for a wider USRP community. Patches
are as usual welcome.
Source code:
https://github.com/chemeris/uhd_dissector
--
Regards,
Alexander Chemeris.
CEO, Fairwaves LLC / ??? ???????
http://fairwaves.ru
------------------------------
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