Cause of most of my noise is likely a sample error

I haven’t put much time lately into the amiga VSC but I put in a little tonight.

I’ve got the image cleaner than it has been, but there is still noise on the left hand side, and a left-center band of scrolling red dots.

These dots are sampling error for sure because when they occur, usually the two samples that I take don’t agree.  I should be able to get more than one 10ns sample of a 140ns data, and so perhaps something is drifting until it gets onto a signal boundary, and then comes back again.  I’d like to see this in the data itself, so perhaps I need more captures.

I submitted the current code to the SVN repo….

 

About the author

keith

Amateur Electronics Design Engineer and Hacker