Hello again,
Sorry for the multiple messages. I nailed down the problem to the
'set_clock_source("external", 1)'. For some reason the other X310
can't get the reference signal from the other one. I will continue
investigating.
If someone has faced a similar problem, please tell me about it.
--
Best regards,
Eino Virtanen
On 11 June 2018 at 12:04, Eino Virtanen <[email protected]> wrote:
> Dear recipents,
>
> I am trying to synchronize the clocks of two X310s using C. I have the
> following code:
>
> ---
> s->usrp->set_clock_source("internal", 0);
> s->usrp->set_time_source("internal", 0);
>
> s->usrp->set_clock_source("external", 1);
> s->usrp->set_time_source("external", 1);
>
> s->usrp->set_time_next_pps(uhd::time_spec_t(0.0));
> sleep(1);
> ---
>
> It produces the following output:
>
> ---
> what(): RuntimeError: Reference Clock PLL failed to lock to external source.
> ---
>
> I am able to synchronize the time using the example binaries, but not
> with my own code. I can see the PPS signal with my oscilloscope while
> running this code.
>
> Is my logic flawed? My understanding is that I simply set the board
> number 0 to listen to the clock and time sources of itself, and the
> board number 1 to listen to the clock and time sources of the external
> ports, which are connected to the board number 0. Then when
> set_time_next_pps() gets called, I assume the board number 0 sets the
> time according to its internal sources, and the board number 1
> according to the external ones.
>
> Thanks for reading my query!
>
> --
> Best regards,
> Eino Virtanen, very-soon-to-be-MSc
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