[USRP-users] Random long duration noise at the start of UBX captures

Michael West michael.west at ettus.com
Mon Oct 12 16:43:41 EDT 2015


Hi Nathan,

The simple answer is no, that is not expected.  What do you have connected
to the RX2 port?  Also, do you see the same effect if you disconnect the
GPSDO?

Regards,
Michael

On Mon, Oct 12, 2015 at 1:26 PM, Perelman, Nathan via USRP-users <
usrp-users at lists.ettus.com> wrote:

> I’ve been having issues with UBX daughter-boards for a little while, and I
> finally traced them down to a reproducible issue. Running:
>
> ./rx_samples_to_file --duration 2 --rate 25000000 --freq 1e9 --gain 38
> --ref gpsdo --setup 0
>
>
>
> I frequently see large amounts of random noise (up to +/- 0.5 out of 1.0),
> for up to 0.5 seconds. I have tested with 2 different UBX daughter-boards
> and seen similar noise. Is this expected with the UBX? I do not see similar
> noise with the SBX.
>
>
>
> I am using UHD 3.8.5 with an N210.
>
> -Nathan
>
> _______________________________________________
> USRP-users mailing list
> USRP-users at lists.ettus.com
> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/attachments/20151012/ca641526/attachment-0002.html>


More information about the USRP-users mailing list