Re: [CAD_CAM_EDM_DRO] Re: Insulating D-shell from chassis?

Randy;

I have to repeat, that would not be considered good practice! If you
have a metal shell DB connector mounted in a metallic housing that shell
should be in contact electrically with that housing. You otherwise
have two issues, one being safety, the other being noise emissions.

thanks
Dave

zephyrus@... wrote:

>Thank you David, Don, Jeff, Jeff, Alan and Ballendo for your replies.
>
>My two "nice" parallel cables (one a Belkin and one a CMS) each have all 25
>conductors present, all individual ground lines (no "cross" continity,) and
>continuity between the metal shells at each end. I am assuming that the
>shells are connected through the shield/drain wire, but just the continuity
>is enough to cause problems.
>
>At the PC end the DB25 shell is connected to the chassis and thus AC line
>ground. At the controller box, the chassis is connected to AC line ground.
>
>So I must isolate the DB25 shell from the controller chassis. Ballendo's
>analysis is right. I think all in all the cleanest way for me will be to
>mount a sheet of fiberglass in an oversize cutout in the controller box
>front panel and use regular metal-shell DB25 connectors (I have a whole bag
>of them already...)
>
>Best regards,
>
>Randy
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