On Wed, Oct 12, 2005 at 06:34:36PM +0200, EVENNOU Frederic RD-TECH-GRE wrote: > Hi everybody, > > I started using the gnuradio platform some few weeks ago, and I've been > trying to use the dbs_rx card. I made some few tests to practice myself > on the way to use this card, but unfortunately I didn't have any > successful result. > I've been using a python program named dbs_fft.py to have a look at the > spectrum in a range of frequencies that I specify. I made some few tests > by emitting a sine wave at 1GHz (and then around this frequency), but > I've never been able to get it with the dbs card, whereas I can see it > very clearly on a spectrum analyzer (level == [EMAIL PROTECTED]). At emission, > and reception, I have some antennas working in that band and antennas > are separated by 50cm. On my display screen I just receive some noise so > I must receive some samples from the dbs_rx card. > I made the same test at lower frequencies and using the TVRx card to > receive the signal, and it works pretty well. > Did someone have the same problem with this card, and is there anything > special that can be done to check if my dbs_rx card works properly ?
You might want to try using usrp_fft.py (in CVS) instead of dbs_fft.py. I'm currently revising *all* the examples, but haven't had a chance to look at dbs_fft.py yet. Right now, usrp_fft.py doesn't have a way to control the adjustable IF bandwidth of the dbs card, but other than that, it should work fine. Use the -R option to specify which side you want to receive from. E.g., $ ./usrp_fft.py -R a Eric _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
