Hi Can anyone please suggest a setup that I can use to test the maximum value of samples? I know that we have 16bit signed values. Looking at the ADC interface on the USRP, we sign extend each 12-bit sample and add 3 zeros to the right. This should give us a maximum value of 16376 for samples?
I tried using a BasicRX daughterboard. I have a function generator, inputting a 20MHz, 10dBm signal into the db. In my app I mix this down to 100kHz using the cordic. I also decimate by 16. The PGA gain is set to 20dB. The FPGA build is the standard 2rx/2tx with hbf. The maximum sample value that I get with this is 8635, so I'm using about half of the ADC's dynamic range. Sebastiaan -- Sebastiaan Heunis Radar and Remote Sensing Group, University of Cape Town Tel: +27 83 305 5667 _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
