Hi,
I am relatively new to GNU Radio. I set up a simple experiment of
connecting a file source directly to the usrp sink and monitoring the
traffic on the ethernet port using wireshark. The source file simply
contains the letters abc. When I ran the flowgraph in GRC it did seem to
initiate traffic on the ethernet interface to the USRP but I could not
find the string abc in any ethernet frame. I thought that since there is
no modulation or any other manipulation of the source data in the
flowgraph before the usrp that I would be able to find this data string
in the ethernet frame. Is there anything the USRP sink block could be
doing on the host side that would alter the data before it gets sent out
over ethernet interface to the USRP?
Thanks,
Dave