[USRP-users] Rx/Tx Loopback

Richard Bell richard.bell4 at gmail.com
Wed Apr 1 18:53:06 EDT 2015


Rob,

If you attach a screenshot, as opposed to the actual grc file, you will get
a lot more people to look at it.

v/r,
Rich

On Wed, Apr 1, 2015 at 2:57 PM, Rob Kossler via USRP-users <
usrp-users at lists.ettus.com> wrote:

> I would like to run a simple Rx to Tx loopback using gnuradio companion
> with my X310.  The attached flowgraph contains two blocks, a UHD source and
> UHD sink, which are directly connected to each other on each of the 2
> channels.
>
> When I run it, I get numerous "L" indications.  To me, this indicates that
> I'm not delivering the samples to the Tx Streamer when it wants them.
> Perhaps the start times for RX streaming and TX streaming need to be
> specified?  If so, can this be done from GRC?
>
> Thanks.
> Rob
>
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