[USRP-users] time/phase synchronization of 2 X300

Marcus D. Leech mleech at ripnet.com
Fri Oct 27 19:02:26 EDT 2017


On 10/27/2017 06:22 PM, Luca Pascale via USRP-users wrote:
> Hi,
>
> is it possible to phase synchronize 2 X300 as follows:
>
> - X300#1: equipped with GPSDO. Generate Ref and PPS signal for the
> X300#2 via PPS out and Ref out connectors.
>
> - X300#2: take PPS and Ref Signal from X300#1 (daisy chain)
>
>
> Target daughterboard is TwinRx. Phase offset will be corrected
> by my application.
>
> If possibile to use this scheme, should exist any degradation with
> respect a configuration with the octoclock ?
>
> If it is necessary to provide to both the X300 the same singlas (pps,
> ref) should be possible to replace the octoclock with 2 way splitters ?
>
>
> Thanks in advance,
>
> Luca
>
There has never been really-good support for REF OUT and 1PPS out on the 
X3xx series.  Partially because making it "work right" with the hardware 
that is in there is more-or-less impossible (length compensation, etc).






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