PSN-L Email List Message

Subject: GVA down with A/D hardware troubles
From: "Geoffrey" gmvoeth@...........
Date: Wed, 15 Sep 2010 06:21:45 +0000


Hello PSN;

My A/D converter is showing terrible internal noise even with no connections.
Random spikes in magnitude of like  +/- 7 or 14 counts no matter what the load or
power source. I have watched this noise increase slowly over the years and
have no idea except possibly bad capacitors on the A/D board.

I have researched the schematic and find differences in
MAX187 specs and what they built.

There are areas where I think Electrolytics should not have been used.

I may try to change them just to see if I'm right..

Will be down until its fixed.

Don't Hold Your breath, Id hate to see a lot of purple faces out there.

Best regards,
geoff
 
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