Transmitter and Receiver on the same SDR

[Oğuzhan Gedikli]

Hello, I have USRP B200 and i use GNU Radio for design. I want to transmit a random signal (whatever, is'nt important for now) I am using the TX/RX port as transmitter and the RX2 port as receiver. I can transmit signal without any problems but i can't receive it from other port. I am sending screenshots to you. If you are help me, i would be glad. Thank you.

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