Hi, I've got 2 units of USRP1 and DBSRX dboards. The two USRP are synchronized for master and slave. the uhd_fft.py is responding correctly. Now I want to use a signal generator to provide 900 MHz. signal level is -20 dBm. From the gnuradio-companion, I created a flow graph using UHD-USRP Source connected to WX-GUI-FFT Sink. The setup are as follow: For USRP source: ID: uhd_usrp_source_0 Device Addr: fpga=usrp1_fpga_4rx.rbf Sync: Don'y sink Clock rate: default Num Mboards:1 Mbo Clock source: default Mbo Time source:default Mbo Subdevice Spec: Num Channel: 1 Sample rate (sps): 32K Cho Center freq: 900M Cho Gain:30 dB Cho Antenna: RXA Cho Bandwidth:10M
For FFT Sink: Sample rate:32k Baseband freq:900M With this setup, only noise is plotted in the FFT. I don't see the signal at 900MHz. And even if I remove the daughterboard from the usrp, the result is unchanged: Noise only. Can you please tell me what is wrong with the setup, and what to do if I want to use the side B. Also which USRP must I use: the master, the slave or both. Please help.
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