Re: [Discuss-gnuradio] USRP dynamic range / DBSRX measurements

2007-12-26 Thread Jens Elsner
Hi Firas, yes, it's only somewhat related. I posted a question about the USRP dynamic range a while ago (see link below) but didn't get a response. Maybe you can comment on it. The algorithm I used to calculate the figure on the Y axis was the sum over an estimate of the power spectrum density.

Re: [Discuss-gnuradio] USRP dynamic range / DBSRX measurements

2007-12-26 Thread Firas A.
Hi, I think we are trying to do something different. We are trying to investigate the possibility of increasing USRP dynamic range by modifying some USRP FPGA stages. By the way, what was the equation used to calculate the ADC output in dB in you graph? Firas Jens Elsner wrote: > > I noticed

[Discuss-gnuradio] USRP dynamic range / DBSRX measurements

2007-12-26 Thread Jens Elsner
I noticed the discussion about the USRP dynamic range. A while ago I made some measurements with a noise generator to calibrate the USRP with a DBSRX daughterboard. The resulting graph is attached. Settings: room temperature, USRP, DBSRX, 2 MHz measurement bandwidth at 940 MHz center frequency,