Re: PLASMA NOISE IN THE KEYBOARD

Here is something from the CAD_CAM_EDM_DRO FAQ

http://206.19.206.56/Kybd_sw.htm


Wayne

--- In CAD_CAM_EDM_DRO@y..., Raul Lara <ralaco@y...> wrote:
> After almost two months searching for my Plasma Cutter
> Noise.
> I had installed:
> -An isolator transformer.
> -An NEC/Tokin RFI/EMI line filter.
> -I shielded all the limit switch cables trough a
> tinned copper tubular wire braided.
> Rewired all the grounds.
>
> Look like it's working.
> I'm only getting noise that is crashing the PC by the
> Keyboard.
> I run the machine with it and the PC crash, I run it
> without it and everything it's OK.
> Do you know a way to isolate the keyboard (it is
> inside a metal cabinet)?
> Or
> Do you know how to get the control, space bar, tab and
> F2 cables from the Keyboard to make a smaller isolated
> keyboard?.
> I thing those are all the keys Indexer LPT uses.
> Or
> How to install an external start switch(control and F2
> keys), and how to wire it to the computer?
>
>
> Best regards
>
> Raul Lara
>
>
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