Re: [Discuss-gnuradio] Max Voltage swing for WBX boards

2010-09-17 Thread Vincent W
>> > What are the absolute and preferred input voltage ranges for the RX, LFRX, >> > and >> > WBX boards? > BasicRX or LFRX can take +10dBm (~2Vpp) > > WBX input power should not exceed -10dBm (~0.2Vpp) > >> > What is the best way of attenuating the signal? > Mini Circuits makes a line of coaxia

Re: [Discuss-gnuradio] Max Voltage swing for WBX boards

2010-09-17 Thread Vincent W
On 09/14/2010 01:29 PM, Marcus D. Leech wrote: >> >> Hi, >> >> I'm trying to do some signal reconstruction and in testing and developing a >> concept design, I wanted to attenuate a test signal and hook it up directly >> to >> the RX port of my USRP2 through either the Basic RX or LFRX daughter bo

Re: [Discuss-gnuradio] USRP2, is that possible to skip the Ethernet and pass data through general purpose (physically accessible) inputs to the FPGA?

2010-09-17 Thread Malihe Ahmadi
Hi Nick, by FPGA image do you mean the .bit file? Thanks, Malihe Nick Foster wrote: Malihe, Use the USRP2 card burner utility, located in the UHD host code as host/utils/usrp2_card_burner_gui.py. It is also installed to /usr/local/share/uhd/utils/ by default. You may have to run the program as

[Discuss-gnuradio] Re: USRP2 rx handler chunk size

2010-09-17 Thread Gaetano Mendola
On Sat, Sep 18, 2010 at 12:25 AM, Gaetano Mendola wrote: > On Fri, Sep 17, 2010 at 9:14 PM, Gaetano Mendola wrote: >> Hi all, >> I'm observing that rx handlers are called when 371 samples are ready, >> I thought (I don't remember why >> I have 370 hard coded in my code) the chunks where 370 sampl

[Discuss-gnuradio] Re: USRP2 rx handler chunk size

2010-09-17 Thread Gaetano Mendola
On Fri, Sep 17, 2010 at 9:14 PM, Gaetano Mendola wrote: > Hi all, > I'm observing that rx handlers are called when 371 samples are ready, > I thought (I don't remember why > I have 370 hard coded in my code) the chunks where 370 samples. Has > this changed lately or it has been > always like this?

Re: [Discuss-gnuradio] UHD GRC loopback glitches

2010-09-17 Thread Marc Epard
On Sep 17, 2010, at 3:44 PM, Josh Blum wrote: > This could very well be underflow on the tx or overflow on the rx. Are you > seeing Us and Os printed to stderr while running? Ah, I forgot to mention that nothing is printed to stderr, nor to the UART. > I suggest: > > 1) reduce the sample rate

[Discuss-gnuradio] GNU Radio doesn't detect wxPython binary installation on Mac OS X 10.6.4

2010-09-17 Thread Elvis Dowson
Hi, I've downloaded and installed the binaries for wxPython from the following link: http://downloads.sourceforge.net/wxpython/wxPython2.8-osx-unicode-2.8.11.0-universal-py2.6.dmg However, when performing a configure , it doesn't detect it. checking for Python wxWidgets wrappers >= 2.8..

Re: [Discuss-gnuradio] libusb error on Mac OS X when building uhd driver

2010-09-17 Thread Elvis Dowson
Hi Matthias, On Sep 6, 2010, at 11:51 AM, Matthias Wilhelm wrote: > As a workaround, you can edit uhd/host/CMakeLists.txt, just edit line 62 > ADD_DEFINITIONS(-pedantic) > by commenting this line out. Then it will compile. Thanks for the solution. Commenting that entry allowed libusb to compile

Re: [Discuss-gnuradio] UHD GRC loopback glitches

2010-09-17 Thread Josh Blum
This could very well be underflow on the tx or overflow on the rx. Are you seeing Us and Os printed to stderr while running? I suggest: 1) reduce the sample rate to see of that fixes or reduces the problem 2) isolate the problem as either an rx or tx problem 3) if this in linux, make sure you ha

Re: [Discuss-gnuradio] GNU Radio and usrp_standard.h: No such file or directory

2010-09-17 Thread Eric Blossom
On Fri, Sep 17, 2010 at 05:02:00PM +0200, Fabrizio Tappero wrote: > hello, > I am trying to compile this C++ file: > http://gnuradio.org/redmine/wiki/1/UsrpFAQCppInterface > by doing: > g++ usrp_test_c++.cpp -o testusrp -lusrp > > and I get the following error: > test_usrp_standard_rx.cc:28:39: er

[Discuss-gnuradio] USRP2 rx handler chunk size

2010-09-17 Thread Gaetano Mendola
Hi all, I'm observing that rx handlers are called when 371 samples are ready, I thought (I don't remember why I have 370 hard coded in my code) the chunks where 370 samples. Has this changed lately or it has been always like this? Is there a way to know in advance with how many samples the rx_handl

Re: [Discuss-gnuradio] GNURadio and multi core processors

2010-09-17 Thread William Cox
Er, that's cubic "foot" ... not inch :) -W On Fri, Sep 17, 2010 at 12:05 PM, William Cox wrote: > Dave, > I'm trying to get this into as small a package as possible, because it's > going underwater :) At 64lbs of buoyancy per cubic inch, every bit counts! > -William > > > On Fri, Sep 17, 2010 at

Re: [Discuss-gnuradio] GNURadio and multi core processors

2010-09-17 Thread William Cox
Dave, I'm trying to get this into as small a package as possible, because it's going underwater :) At 64lbs of buoyancy per cubic inch, every bit counts! -William On Fri, Sep 17, 2010 at 11:58 AM, dave k wrote: > minimum core 2 duo. quad would be better. i use a q9650 and it handles just > file

Re: [Discuss-gnuradio] gr_remez error when running "usrp2_wfm_rcv.py" example

2010-09-17 Thread Tom Rondeau
On Fri, Sep 17, 2010 at 2:58 AM, Jorge Miguel wrote: > After running the USRP2 GNU Radio example "usrp2_wfm_rcv.py" I got an error > which I cannot find the solution in internet, any ideas? > Many thanks in advance. > Jorge. > > u...@user:/usr/share/gnuradio/examples/usrp2$ ./usrp2_wfm_rcv.py > Us

[Discuss-gnuradio] GNU Radio and usrp_standard.h: No such file or directory

2010-09-17 Thread Fabrizio Tappero
hello, I am trying to compile this C++ file: http://gnuradio.org/redmine/wiki/1/UsrpFAQCppInterface by doing: g++ usrp_test_c++.cpp -o testusrp -lusrp and I get the following error: test_usrp_standard_rx.cc:28:39: error: usrp_standard.h: No such file or directory I am on a ubuntu 10.4 (32bit) sys

Re: [Discuss-gnuradio] GNURadio and multi core processors

2010-09-17 Thread Tom Rondeau
On Fri, Sep 17, 2010 at 10:27 AM, William Cox wrote: > Howdy, > How well does GNURadio + GRC play with multicore processors? I'm running a > program that streams video on an Intel Atom-based processors and it's not > really able to keep up. I was going to try out the dual-core Atom's if > GNURadio

[Discuss-gnuradio] GNURadio and multi core processors

2010-09-17 Thread William Cox
Howdy, How well does GNURadio + GRC play with multicore processors? I'm running a program that streams video on an Intel Atom-based processors and it's not really able to keep up. I was going to try out the dual-core Atom's if GNURadio would play nicely with it. Thanks. -William __

Re: [Discuss-gnuradio] want to achieve the symbol rate to 270.833kb/s

2010-09-17 Thread Tom Rondeau
2010/9/17 intermilan : > hi Tom: > >   I can not find the examples what you asked me to look for.so what the > version of your Gnuradio? Mine is 3.2.2. >   Besides, I still wonder why I can not use the resampler block in the > /gnuradio-core/src/python/gnuradio/blks2impl in which I can set

RE: [Discuss-gnuradio] gnuradio-companion error

2010-09-17 Thread zhang wei
The log is as following: cl...@ubuntu:~$ gnuradio-companion <<< Welcome to GNU Radio Companion v3.3.1git-53-gc81312ce >>> Loading: "/home/cliff/t1.grc" >>> Done Showing: "/home/cliff/t1.grc" Generating: "/home/cliff/top_block.py" Executing: "/home/cliff/top_block.py" >>> Done >>

RE: [Discuss-gnuradio] want to achieve the symbol rate to 270.833kb/s

2010-09-17 Thread intermilan
hi Tom: I can not find the examples what you asked me to look for.so what the version of your Gnuradio? Mine is 3.2.2. Besides, I still wonder why I can not use the resampler block in the /gnuradio-core/src/python/gnuradio/blks2impl in which I can set the value of the interpolatio