Sharing a sample clock, but with different sample rates

[Thomas L.]

Hi everyone.

I am currently trying to synchronize acquisitions from three different boards.
a) DSA 5122
b) S - Series 6120
c) M - Series 6250

I want to be able to sample "a" at about 60MHz, "b" at about 800kHz and "c" somewhere around 10kHz.

Now I was wondering if it was possible to use one single clock so that these devices are synchronized. What happens if I take the clock from the DSA, which samples at 80MHz and feed it into the 6250 - is that working at all (of course I won't be able to sample at 80MHz with the 6250, but is there some sort of divider so I will get the desired 10kHz frequency?)

Thank you for your answers 🙂

[Thomas L.]

Hmm .. I almost forgot I posted that question ... any ideas?

[Wolfgang_Z.]

Hello Thomas,

In your case you should not use one clock for all boards you should sychronize the clocks of all boards with the 10 MHz Reference clock. How to do this you can read in this KnowledgeBase.
http://zone.ni.com/devzone/conceptd.nsf/webmain/6dc991028566309886256f990080a720

I hope it helps.

Regards,
Wolfgang

[Thomas L.]

Hello Wolfgang

Thank you for the article. I browsed through it and I think it is the thing I've been looking for. But as well I think I have already tried that and got an error message when routing to the 5122. At least I think so. I will try it out tomorrow and will let you know if it works out. I have a SRQ open on this as well, maybe I will get information on this one from that source, too.

Thanks for the moment, tomorrow I will know more 🙂