Re: [Discuss-gnuradio] Problems when receiving after transmit

2008-01-20 Thread Johnathan Corgan
Dan Halperin wrote: > Just-powered on USRP rev 4.2 with RFX2400 rev 2-6-2006. Current SVN. > > usrp_rx_cfile.py -f 2.485G -d 8 -s pre.dat > usrp_siggen.py -i 16 -f 2.485G > usrp_rx_cfile.py -f 2.485G -d 8 -s post.dat > > In the first set of data, the noise level is what I'd expect and > everythin

Re: [Discuss-gnuradio] Problems when receiving after transmit

2008-01-20 Thread Dan Halperin
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I should add that I've duplicated this with multiple USRPs of different revisions and different revisions of the RFX 2400 (the 12-26-2006 version as well). So I don't think I broke my hardware... I've also duplicated it at multiple frequencies. - -Dan

[Discuss-gnuradio] Problems when receiving after transmit

2008-01-20 Thread Dan Halperin
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Just-powered on USRP rev 4.2 with RFX2400 rev 2-6-2006. Current SVN. usrp_rx_cfile.py -f 2.485G -d 8 -s pre.dat usrp_siggen.py -i 16 -f 2.485G usrp_rx_cfile.py -f 2.485G -d 8 -s post.dat In the first set of data, the noise level is what I'd expect an

Re: [Discuss-gnuradio] Pentium IV computing power in FLOPS

2008-01-20 Thread Eric Blossom
On Mon, Jan 21, 2008 at 01:10:47AM +0100, Vincenzo Pellegrini wrote: > Hi everybody, > could anybody help me in figuring out what is (even a rough estimate is OK) > the raw computing power of a 3.0GHz Pentium IV CPU? > > really thanks for help > > -- > Vincenzo Pellegrini Assuming you're coding

Re: [Discuss-gnuradio] Pentium IV computing power in FLOPS

2008-01-20 Thread Sivan Toledo
Around 3 Gflops sustained in carefully-coded code with a good cache miss ratio (for example, dense matrix multiplication in high-quality BLAS library). Sivan On Jan 20, 2008 7:10 PM, Vincenzo Pellegrini <[EMAIL PROTECTED]> wrote: > Hi everybody, > could anybody help me in figuring out what is (ev

[Discuss-gnuradio] Pentium IV computing power in FLOPS

2008-01-20 Thread Vincenzo Pellegrini
Hi everybody, could anybody help me in figuring out what is (even a rough estimate is OK) the raw computing power of a 3.0GHz Pentium IV CPU? really thanks for help -- Vincenzo Pellegrini ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http:

[Discuss-gnuradio] Question: gr_dd_mpsk_sync_cc

2008-01-20 Thread Jason Anders
Hi! I have another question. Can the "gr_dd_mpsk_sync_cc" block demodulate BPSK? Also, is there anything I should know before using this block (like warnings on what should not be done since it may result in erroneous decoding of the messages)? Thanks!

Re: [Discuss-gnuradio] TX/RX Coordination

2008-01-20 Thread Robert Miller
Ok, so I was able to achieve the functionality I was asking for with the help of various post responses ("set_auto_tr(), gr_stall, and PTT" and "Problem with symmetric behavior") . I am using set_enable( ) to accomplish my goal, since my data is not packetized (I am simply using tones). Attached

Re: [Discuss-gnuradio] Spurious Spikes Seen with usrp_fft.py

2008-01-20 Thread Robert Fitzsimons
Hi Thomas You email never made it into my mailbox, maybe it got caught as spam. > I am using a USRP with only a DBSRX daughterboard installed. The image > at the following link is a screen capture I took. > http://img340.imageshack.us/img340/3570/screenshotusrpfftfy8.jpg > Does anyone know why th

Re: [Discuss-gnuradio] PCB's and Schematics

2008-01-20 Thread Matt Ettus
There are no .brd or other Eagle files in there. Dan King wrote: brd files are from Eagle. http://www.cadsoft.de/ On Jan 19, 2008 11:53 PM, Eric Blossom <[EMAIL PROTECTED]> wrote: On Sat, Jan 19, 2008 at 07:13:04PM -0800, obn4uticus wrote: Does anyone here know what to open the usrp