In going back through the recent list archives, I came across several
emails concerning OMNI Noise. I did some private corresponding with Piotr,
who graciously provided me with additional information on the mods he did
to the Logic Control board. This past weekend I removed the Logic Control
board from my OMNI-VI+ and looked it over. What a surprise, being a
digital designer, I was very concerned by the quality of this board. I
cannot believe there were so few de-coupling capacitors on the digital
section of this board, and the size of the power/ground traces is
appalling. I also cannot believe it would have increased the cost that
much to have had a power and ground plane. I did find that there is
approximately a 5 Ohm resistance between VCC pin 26 and VCC pin 57 of the
DSP chip, this is NOT good. I soldered a jumper between these two pins. I
would suggest that anyone who has an OMNI-VI check this out.
73
Warren Walsh - K2BM
==================================================================
Warren J. Walsh (warrenw@pentek.com) Pentek, Inc.
Design Engineer One Park Way
Phone: (201) 818-5900 x 251 Upper Saddle River, NJ 07458
Fax: (201) 818-5941 http://www.pentek.com/
==================================================================
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