Well there’s the rx_multi_samples example that is part of the UHD source tree. 

Sent from my iPhone

> On Feb 18, 2021, at 9:32 PM, Xiang Ma <[email protected]> wrote:
> 
> 
>   Do you have any example code? I am still confused.
> 
> Thank you.
> 
>> On Thu, Feb 18, 2021 at 5:50 PM Marcus D Leech <[email protected]> 
>> wrote:
>> Just create a 2-channel USRP source and specify a subdev of “A:0 B:0”. 
>> 
>> 
>> 
>> Sent from my iPhone
>> 
>>>> On Feb 18, 2021, at 7:38 PM, Xiang Ma via USRP-users 
>>>> <[email protected]> wrote:
>>>> 
>>> 
>>> Hi,
>>> 
>>>     I am using a x310 USRP with two UBX daughterboards. Now I can transmit 
>>> and receive the signal in RF A daughterboard with command
>>>     self.source.set_antenna("RX2", 0)
>>>     self.sink.set_antenna("TX/RX", 0).
>>> 
>>>     Now, I want to transmit the signal in RF A, and receive the signal in 
>>> both RF A and RF B. It is actually 1 transmitter and 2 receivers. How can I 
>>> implement this? I checked the set_subdev_subdev("B", 1), but it doesn't 
>>> work.
>>> 
>>> Thank you,
>>> 
>>> 
>>> 
>>> 
>>> -- 
>>> Xiang Ma, Ph.D. Student
>>> College of Engineering
>>> Utah State University
>>> E-mail:[email protected]
>>> _______________________________________________
>>> USRP-users mailing list
>>> [email protected]
>>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
> 
> 
> -- 
> Xiang Ma, Ph.D. Student
> College of Engineering
> Utah State University
> E-mail:[email protected]
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