Re: [Discuss-gnuradio] Bypassing CIC and half-band filter on N2x0

2014-02-26 Thread Matt Ettus
You could only do that by modifying the FPGA. It would be a very minor mod, though. Hook up the undecimated ADC values to where the output of the decimators go, and leave everything else intact. Then just set the decimators as normal and you will get the rate you request. Matt On Tue, Feb

Re: [Discuss-gnuradio] Bypassing CIC and half-band filter on N2x0

2014-02-26 Thread Juha Vierinen
Thanks, I did manage to sample two real channels at 25 MHz! I set the NCO to 0 and the mux to A:AB. I don't know why I didn't think of this trick earlier. Now the real part is channel 0 and and imaginary part channel 1. I will next try to do the fpga mod. Can you point me to the correct file in

[Discuss-gnuradio] Bypassing CIC and half-band filter on N2x0

2014-02-25 Thread Juha Vierinen
Is there any way to bypass the CIC and the HBF on the USRP N200 to just stream decimated (no integration) real samples off the 100 MHz ADC? I'd like to eg., record every 25th sample arriving on the ADC. I'd like to avoid compiling my own fpga is necessary. Is there any configuration of