clock synchronization between 2 redpitaya

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qi-tju
Posts: 2
Joined: Mon Oct 10, 2022 7:32 am

clock synchronization between 2 redpitaya

Post by qi-tju » Mon Oct 10, 2022 8:04 am

how can i output the clock signal of the first Redpitaya, and make it as the external clock ADC clock of the second Redpitaya. when I read the documentation of redpitaya, i found the location of R23/24/27/28 in Schematics are different with the real location.

juretrn
Posts: 104
Joined: Tue Nov 16, 2021 11:38 am

Re: clock synchronization between 2 redpitaya

Post by juretrn » Mon Oct 10, 2022 9:29 am

AFAIK, the resistors R25 and 26 (next to the oscillator) need to be moved to the appropriate positions marked on this picture.
https://redpitaya.readthedocs.io/en/lat ... _photo.png
The appropriate positions depend on how exactly you want to bring an external clock to the ADC.
As an example, you can check our existing solution for X-channel streaming.

Schematic:
https://redpitaya.readthedocs.io/en/lat ... 4/top.html

mrmatthews
Posts: 15
Joined: Fri Jan 27, 2023 5:43 pm

Re: clock synchronization between 2 redpitaya

Post by mrmatthews » Wed Sep 27, 2023 10:52 pm

Any chance someone could label the target locations of the resistors? The image included here just has a dotted box around 6 solder pads, which makes it unclear which is which.

juretrn
Posts: 104
Joined: Tue Nov 16, 2021 11:38 am

Re: clock synchronization between 2 redpitaya

Post by juretrn » Thu Sep 28, 2023 9:25 am

Agreed, that picture is not good. It should be updated :)
See this instead:
https://imgur.com/a/QOQcqiD

mrmatthews
Posts: 15
Joined: Fri Jan 27, 2023 5:43 pm

Re: clock synchronization between 2 redpitaya

Post by mrmatthews » Thu Sep 28, 2023 5:36 pm

Thank you!

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