Re: Another Zip story, episode 2...

[o9938156@wsuaix.csc.wsu.edu (mark lyon)]

gdunn@nyx10.cs.du.edu (Greg Dunn) writes:
: Mark:  It sounds like you MAY have a problem with RF interference from
: another board in your GS.  The fact that a single sheet of foil gave
: you some improvement (grounded, or not?) makes it a possibility.  What
: other boards are you using in the GS?  Anything with an oscillator is
: a potential problem.  We're going through this at work with a couple of
: adjacent boards causing a RAM test to fail.

That's what I thought at first.  In an earlier post, I said I just
wrapped the whole board in (grounded) aluminum foil.  But what
seems to matter is the distance from the foil to the board.
The single sheet of foil on one side (the power supply side)
doesn't seem to matter if it is grounded or not.  So it seems
it isn't RF noise, but interference on the board between I/O
lines or something.
: 
: --
: | Greg Dunn                        |                                     |
: | GregDunn@aol.com                 | "Catsup belongs on scrambled eggs." |
: | gregdunn@shell.portal.com        |         -------                     |
: | Greg@gdunn.nawc-ad-indy.navy.mil |                   -- Frederik Pohl  |
: