Re: [Discuss-gnuradio] doubt about the the DC offset

On Mon, Aug 23, 2010 at 09:42:56AM +0800, intermilan wrote: > > Hi all: > when I run the test program test_usrp_standard_tx/rx.cc, I > found that the DC offect is set to 4M. So can anyone tell me > how this value come out and where can I find the process of > setting this valu

Re: [Discuss-gnuradio] Locking USRP2 to external 10MHz reference in the UHD/GRC universe

Swig brings in the clock config struct into python. The python code looks like: >>> from gnuradio import uhd >>> ccfg = uhd.clock_config_t() >>> ccfg.ref_source = ccfg.REF_SMA >>> ccfg.pps_source = ccfg.PPS_SMA >>> ccfg.pps_polarity = ccfg.PPS_POS so the the grc xml wrapper you need that bit of

Re: [Discuss-gnuradio] eye diagram sink

The usrp_oscope has a mode where you can do channel 1 vs channel 2. Try that with real on channel 1 and complex on channel 2. Dan On Aug 22, 2010, at 4:47 PM, Kyle Zhou wrote: > I want to display an eye diagram for QPSK signals. Could not find any sink > suitable for this case. Has anyone imp

[Discuss-gnuradio] doubt about the the DC offset

Hi all: when I run the test program test_usrp_standard_tx/rx.cc, I found that the DC offect is set to 4M. So can anyone tell me how this value come out and where can I find the process of setting this value? and can we set other values to instead of this value?

[Discuss-gnuradio] Locking USRP2 to external 10MHz reference in the UHD/GRC universe

How do I arrange to lock the USRP2 to an external 10MHz reference in the UHD+GRC world? Is there an "arg" I can pass when I create the UHD USRP2 simple source in GRC? This is for some pulsar research, where an external stable reference makes life s much easier. -- Marcus Leech Principal I

[Discuss-gnuradio] eye diagram sink

I want to display an eye diagram for QPSK signals. Could not find any sink suitable for this case. Has anyone implemented that? Thanks Kyle ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnurad

[Discuss-gnuradio] 'gr_hier_block2_sptr' object has no attribute '_write_fpga_reg'

Hi all, I'm working on a synchronization block to allow the transmitter and receiver to co-locate on the same motherboard and work alternatively, transmitter working for 0.5 second then receiver working for 0.5 second, and then repeat this process.  I'm using USRP1 and LFTX/RX to develop my

[Discuss-gnuradio] Record file format

Does anybody know the file format? that i recorded signals into files and I want to read them for analysis. what is the format of the data written/read by filesink/source block (I used GRC) And I used the USRB source block and choose complex type of output >>> So does the file i record are comp

Re: [Discuss-gnuradio] how to get dqpsk2 block?

Hi, On Aug 22, 2010, at 2:22 PM, Thunder87 wrote: > I wonder if I need gcell and gr-gcell. I think that's needed if you want to run GNU Radio on the IBM Cell Broadband Engine processor, which is used to power the Playstation 3. http://gnuradio.org/redmine/wiki/gnuradio/PS3FC8Install The Cell

Re: [Discuss-gnuradio] how to get dqpsk2 block?

On 22 August 2010 12:22, Thunder87 wrote: > > Thanks! I've started to understand this a bit. > > Now it's like this: > > gcell > gr-gcell > gr-audio-jack > gr-audio-osx > gr-audio-portaudio > gr-audio-windows > gr-comedi > gr-video-sdl > grc > > These components will not be built. > > I wonder if

Re: [Discuss-gnuradio] how to get dqpsk2 block?

Thanks! I've started to understand this a bit. Now it's like this: gcell gr-gcell gr-audio-jack gr-audio-osx gr-audio-portaudio gr-audio-windows gr-comedi gr-video-sdl grc These components will not be built. I wonder if I need gcell and gr-gcell. Definitely need grc. Here is a log http://old.