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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