[Discuss-gnuradio] What is the property of the crystal on USRP?

Hi, I wonder which one of HC49USMD crystals is it used for the USRP clock and what are its properties? Thanks a lot. And happy new year! //Lin Ji ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss

[Discuss-gnuradio] Initialization of USRP? And a question about wfm_rcv_file.

Hi,   How or where does the python code initialize the USRP? Is that when I import usrp from gnuradio in the python code?   Another question is about wfm_rcv_file. I thought this code will read the buffer of USRP, process it and save it to file. But in the file I saw that this line 'src = "" is not

[Discuss-gnuradio] Which file/files handle the signal sampling and decimation on FPGA?

Hi,   For my work I need to do some time stamping on some signal samples. For this purpose I need to modify a little the FPGA on the USRP. I suppose .\usrp-0.12\fpga is the right place to look at. There's a bunch of HDL design files in the folder, I wonder which of them have been used to handle the

[Discuss-gnuradio] Sampling rate of USRP and data rate through USB

Hi,   There is one thing that I can not figure out:   The ADC on the USRP has a sampling rate at 64Msps, that is, for a data at 1Mbps, for every incoming bit there will be 64 samples. Suppose every sample is 16bits, the bit rate is 1024Mbps,that is a huge amount of data flow. Now if a user want to

[Discuss-gnuradio] Easiest way to perform vector cross correlation on USRP?

related, share some information with me, I would really preciate that! /Lin Ji ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] Sampling rate and USB interface

on how to reprogram the FPGA using Altera Quartus II, if there is any, thanks. /Lin Ji ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] Compute/Save incoming samples

Hi,   If I plug 2 signals to the daughter board and let the USRP save samples to file, will it be saved in 2 files or just mixed in one file?     And in the FPGA, which module handles the samples? I need to know this cuz I want to make time stamps on the samples.     Thanks s lot   /Lin Ji

[Discuss-gnuradio] What does the onboard FPGA now and how can I realtime process the signal?

Hi,   I'm working with analyzing WLAN signals and plan to use the onboard FPGA to process the signal.   I wonder what does this FPGA do by default? Is there any documents about this?   What I need to do is before saving the I&Q signal samples to files, do a correlation and time stamping on the inco

[Discuss-gnuradio] Which language is used on the FPGA of USRP?

Is it VHDL or AHDL? Can I program it to add some functionalities? And if so, how shall I get started? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] about runing wfm_rcv_gui.py

Hi,  I have a question about gnuradio, I wonder if I can ask it here:  When I run wfm_rcv_gui.py, no window has been poped up. only this line:  >>> gr_fir_fff: using SSE   then the system is waiting.  I wonder is there something wrong with it?  And when I was trying to run usrp_oscope from gnuexamp