Re: [Discuss-gnuradio] USRP Input Calibration / CIC Filter Response

2009-03-23 Thread Eric Blossom
On Mon, Mar 23, 2009 at 10:44:21AM -0700, Eric Blossom wrote: > On Mon, Mar 23, 2009 at 12:58:17PM -0400, Erich Stuntebeck wrote: > > The daughterboard gain was set to the mid-point. > > > > I don't have the range of the time domain samples as I did the FFT > > processing in real-time and discard

Re: [Discuss-gnuradio] USRP Input Calibration / CIC Filter Response

2009-03-23 Thread Eric Blossom
On Mon, Mar 23, 2009 at 12:58:17PM -0400, Erich Stuntebeck wrote: > The daughterboard gain was set to the mid-point. > > I don't have the range of the time domain samples as I did the FFT > processing in real-time and discarded the raw data. The data was > collected using a script I wrote to li

Re: [Discuss-gnuradio] USRP Input Calibration / CIC Filter Response

2009-03-19 Thread Eric Blossom
On Thu, Mar 19, 2009 at 05:43:56PM -0400, Erich Stuntebeck wrote: > Hi, > > I'm trying to calibrate the USRP so I can get true dBm readings out of > it. I'm using an LFRX card with 16 decimation and a center frequency > of 2 MHz so I can look at the range from DC - 4 MHz. I hooked up a > signal ge

Re: [Discuss-gnuradio] USRP Input Calibration / CIC Filter Response

2009-03-19 Thread Stefan Bruens
On Thursday 19 March 2009 22:43:56 Erich Stuntebeck wrote: > Hi, > > I'm trying to calibrate the USRP so I can get true dBm readings out of > it. I'm using an LFRX card with 16 decimation and a center frequency > of 2 MHz so I can look at the range from DC - 4 MHz. I hooked up a > signal generator

[Discuss-gnuradio] USRP Input Calibration / CIC Filter Response

2009-03-19 Thread Erich Stuntebeck
Hi, I'm trying to calibrate the USRP so I can get true dBm readings out of it. I'm using an LFRX card with 16 decimation and a center frequency of 2 MHz so I can look at the range from DC - 4 MHz. I hooked up a signal generator and swept it through the DC - 4 MHz range at 100 kHz intervals and gen