At 18:51 -0400 12/4/05, Pablo Roufogalis L. wrote:
I currently use three monitors, two 14-inchers (90-degree rotation)
flanking a 20".
The center one produces a faint rolling bar when the others are on.
Can I just put grounded metal panels between the monitors and avoid
this interference?
A most difficult task. The interference is magnet, not electric. You
need a mild steel or nickel shield with "soft" magnetic properties.
Conetic and Mu-metal are things to Google for. The best magnetic
shields require heat treatment AFTER any cutting or bending.
But I have tried such things with little success. Spacing works
wonders. 1/4 inch of soft cast iron does nothing.
Monitors that operate at different horizontal rates don't interfere
too much with each other. You might try moving the center monitor to
one side. The magnetic leakage from a monitor may well be heavier on
one side than another.
In some cases you have options on the video card to change to another
scan rate. Multiscan or VGA monitors can handle that and it's worth a
try.
The direction of the earth's magnetic field also matters. Can you
turn your desk around?
It's also possible that the interference you see is from a 60 Hz
source like a florescent lamp nearby. Check it out.
I am converting to flat panels with my next upgrade. Magnetics and
high voltage are just too much these days even though I have been
doing electric power stuff for the last 10 years.
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