Hi Dylan,
Just to confirm that you are using UHD 4.0?  If so, then it should work.
But, if you are using UHD3.x, I think that the replay block cannot provide
250 MS/s on both channels.
Rob

On Tue, Jan 5, 2021 at 1:59 AM Jonathon Pendlum via USRP-users <
[email protected]> wrote:

> Hi Dylan,
>
> Are you saying you want a flowgraph like this?
> Replay Block -> Radio TX
> Radio RX -> Host (2x 10GigE)
>
> If so, yes that is possible. See
> http://kb.ettus.com/USRP_N300/N310/N320/N321_Getting_Started_Guide#Dual_10_Gb_Interface
> for how to benchmark rx. Also, take note of the "second_addr" device arg in
> that example as it will be needed when you write your UHD app for the above
> flowgraph.
>
> Jonathon
>
> On Wed, Dec 30, 2020 at 10:52 AM Dylan Baros via USRP-users <
> [email protected]> wrote:
>
>> Good morning,
>>
>> I am interested in using a rfnoc replay block to benchmark rx over both
>> 10 gb ports, is that possible? I would like to dedicate both ports to
>> receiving and the rfnoc replay block to transmit. I am using a N321.
>>
>> Thanks,
>> Dylan
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