On 06/14/2018 01:30 PM, Keith k via USRP-users wrote:
Hello all
I noticed in my testing that I am seeing significant mismatch in
amplitude on each channel of my N200(lfrx db) with the second channel
being much weaker. I thought that it was a problem with my code, but
when I hook up a signal generator and split to both RX ports and use
the rx_samples_to_file example, I still see a clear difference as
shown in the quick plot.
./rx_samples_to_file --args="addr0=192.168.10.112"
--file="samples.dat" --type="float" --duration 1 --rate 5e6 --freq
13e6 --subdev="A:A A:B" --channel 0 --ref="external"
./rx_samples_to_file --args="addr0=192.168.10.112"
--file="samples2.dat" --type="float" --duration 1 --rate 5e6 --freq
13e6 --subdev="A:A A:B" --channel 1 --ref="external"
However my colleague has his own set of gnuradio code, and when he ran
his example it produced a plot of similar amplitude. I can't see much
of what I'm doing different using C++ UHD vs his gnuradio code, but
I'm not a big expert here so I'm just looking for ideas. Thanks.
UHD version UHD_3.11.0.HEAD-0-g13c32cef
What subdev spec is your friend using in his flow-graph? Is it .GRC
derived, can it be posted here?
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