Thanks both,
All good now - I get a roughly constant phase delta
and when I re-run the FG, I get a different phase delta ( I don't need
to power cycle the USRPs). Now I will put in the synchronisation code
and the phase offset should be close to zero.
Use "unknown PPS" on both of them. The MIMO cable shares both REFCLOCK
and 1PPS signals, so they will both be synchronized to the same time.
On 2017-09-12 16:13, John Shields wrote:
> Thanks Derek,
> No, I hadn't been power cycling between the runs - good point, obviously, I
> should have.
>
Thanks Derek,
No, I hadn't been power cycling between the runs
- good point, obviously, I should have.
In terms of the 10 MHz and 1 pps references, in
the configuration I was testing, I don't believe so in that I had the
MIMO cable disconnected. M
On 09/11/2017 04:50 AM, John Shields wrote:
Thanks for the feedback but I am not sure that I understand it. What I
was hoping to do was step through the configurations with increasing
levels of synchronisation and expecting to see same.
Marcus' comment is correct and I have not, yet, put in th
Hi John,
Are you power cycling the USRPs between tests or just rerunning the GRC
flowgraph? Do you have shared 10 MHz and 1 PPS references? What version of
UHD is printed in the output?
Thanks,
Derek
On Mon, Sep 11, 2017 at 1:50 AM, John Shields wrote:
> Thanks for the feedback but I am not su
Thanks for the feedback but I am not sure that I understand it. What I
was hoping to do was step through the configurations with increasing
levels of synchronisation and expecting to see same.
Marcus' comment is correct and I have not, yet, put in the code which
synchronises SBXs.
I guess my
On 09/10/2017 08:58 PM, Dan CaJacob wrote:
I could be wrong, but I thought the SBX was one of the few daughter
cards that starts with s known phase offset?
Only if you ask it to do so, and only if it's sharing clock with its
buddies...
On Sun, Sep 10, 2017, 2:49 PM Fulcrum Associates
ma
I could be wrong, but I thought the SBX was one of the few daughter cards
that starts with s known phase offset?
On Sun, Sep 10, 2017, 2:49 PM Fulcrum Associates
wrote:
> Dear All,
>
> I have a couple of USRPs connected, through a strong
> attenuator to a signal generator (NWT4001
