Hi Nils,
So, could you share your flow graph, or a sketch of it?
Especially (asked you on SO, too): Do you use one uhd_usrp_source, or
two? And: how do you tell the source(s) which USRP to use?
To answer the easy-to-answer questions right now:
> Is it possible to set the master clock at the USRP2 or what
> could been the reason?
No, USRP2 has a fixed 100MHz MCR. My suspicion is that you're actually
setting the rate of the X300, or a side effect of trying to set the rate
of the USRP2 helps you here; hence my question for the overall approach.
Best regards,
Marcus
On 13.04.2016 09:26, Nils Hollmach wrote:
>
> Dear Sir or Madam,
>
> At present I work with 2 different USRPs.
> One of this is the USRP2 and the another one a newer device is the X300.
> This devices communicate each about QPSK and a test algorithm.
> For the USRP2 I use the reference input and use reference clock output
> from
> the x300 device to compensate frequency shift.
> If I use the command
> self.uhd_usrp_source.set_clock_source("external", uhd.ALL_MBOARDS)
> , then data communication didn't work.
> But If I set the master clock of the USRP2 to 200Mhz with
> self.uhd_usrp_source.set_clock_rate(200e6, uhd.ALL_MBOARDS)
> , then the communication works.
> Is it possible to set the master clock at the USRP2 or what
> could been the reason?
>
>
>
> best regards
>
>
>
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