Hi, The issue was the gain on the USRP2 UHD block in GRC was 0dB. I had to put it way up and then we got the signal again. Just curious however, With the previous USRP2 block(pre-UHD), 0 dB gain worked fine. Is there some change I'm not aware of?
thanks, -sam On 10/25/2011 12:53 PM, Sam Keene wrote: >Hello all, > >We recently upgraded to the UHD drivers, and now some basic >stuff we >had working with the older drivers just isn't working anymore. For >>example, I'm just trying to transmit and receive a raised cosine >pulse, but >I'm not getting anything at the receiver. I've eliminated >all warnings that I >was getting, to no avail. We're using USRP2s with >the RFX2400 daughterboards. >> >I'm attaching 2 GRC files as examples of what we're doing. I'm not >getting >any received signal. Any idea what I'm doing wrong. > What version of UHD? Can >you repeat the experiment with a higher sampling rate? Also, make sure that filter isnt outputting more than magnitude 1.0/ -josh
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