John Kasunich wrote:
> A simple test to see if screened cable will help can be done with some 
> aluminum foil.  Make a "screen" around the cable, ground it, and see if 
> it helps.  Just be carefull that the exposed foil doesn't short anything.

Like this?  :-)

<http://highlab.com/~seb/emc2/al-screened-cable.jpg>

The ground line from the aluminum foil screen is just visible to the 
left of the nearest stepper motor: it's a short length of solid-core 
wire with gray-and-red insulation.  One stripped end wraps around the 
aluminum foil and the other is attached to the stand-off screw of the 
7i30 board (at the lower left of the picture).

Tidy, my workbench ain't.  Roomy neither.


-- 
Sebastian Kuzminsky

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