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de0-Nano noise on outputs

Altera_Forum
Honored Contributor II
1,181 Views

Hi,  

 

Just working on a project with my De0-Nano, outputting a data stream to a DAC and noticed that the boards output pins are pretty damn noisy. Don't have an analyzer getting around 1.5V pk-pk noise riding my output. Is this normal for the board? 

 

 

Cheers, Chris.
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3 Replies
Altera_Forum
Honored Contributor II
97 Views

That is not normal. Check your power rails, ground connections. How are you measuring the noise? What frequency is it at?

Altera_Forum
Honored Contributor II
97 Views

Are you sure this is real noise? Could it rather be a measure problem, i.e. noise caught by your test probe? 

In either case, check if the ground reference is the same on both sides.
Altera_Forum
Honored Contributor II
97 Views

Thanks for the heads up guys I appreciate the responses, I had the project apart and cleaned up some messy areas. Everything is working as expected now.

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