Hi Alex,

I assume you're referring to the 10MHz reference input and PPS input?
Details are here...

http://files.ettus.com/uhd_docs/manual/html/usrp2.html#pps-pulse-per-second

R.


On 12 July 2013 23:01, Alex Zhang <cingular.a...@gmail.com> wrote:

> hello,
>
> I am going to connect the N210 external ref port to a clock distribution
> board. But I dont know what the driver mode is. Such like it is LVDS or
> else, and what the current is, like 3.5mA or 8mA.
>
> Can some one give help?
> Thanks
>
> --
>
> Alex,
> *Dreams can come true – just believe.*
>
> _______________________________________________
> USRP-users mailing list
> usrp-us...@lists.ettus.com
> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>
>
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