On 05/14/2018 09:04 AM, ROBIN TORTORA via USRP-users wrote:
Split both your 1pps and 10MHz and then run cables off the splitter to
each X310 separately using "equal length" cables and you should be
"good enough", dont daisy chain :)
I don't think the daisy-chain support was ever implemented, at least
partially because it's not a wonderful idea in terms of added phase-noise,
and added clock and 1PPS skew between the two devices.
On May 14, 2018 at 4:28 AM harfan ryanu via USRP-users
<usrp-users@lists.ettus.com> wrote:
Hi All,
I am building application with two USRP X310 configuration using
daisy chain. When i try to synchronize both USRP using this :
usrp.ptr->set_clock_source_out(true,0);
usrp.ptr->set_time_source_out(true,0);
usrp.ptr->set_clock_source("external",1);
usrp.ptr->set_time_source("external",1);
My configuration is the first usrp (with addr0 configuration 192.168.140.2) has
an sma cable connected to the PPS Trig Out and Ref Out, while the other end of
the sma cable is connected to second usrp (
with addr1 configuration 192.168.40.2) through PPS Trig In and Ref In.
I got an error message telling RuntimeError: Reference Clock PLL failed to lock
to external source.
I have explored some question in the past saying USRP x310 is not suitable for
daisy chain and still in experimental however that thread is from 2014, i dont
know if it is still valid.
Could anyone help me to solve this problem?
I am very grateful for any respond and help.
Thank you very much,
Regards,
Harfan
Sydney Uni
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