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Wed, 4 Mar 1998 01:07:05 -0500 |
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At 08:52 AM 3/3/98 +0000, you wrote:
> Hi.
> In short, yes, if Murphy is hanging around. But let us see the
reasons.
> If printer and computer have not the same ground, they may be at
>different voltages, or simply one of them has some electrostatic charge.
>When you introduce the connector, nobody assures you that gnd will go in
>first (unless a very well built cable, taking these things into
consideration).
>Therefore, during some tenths of a second, there may be a great current
>flowing through signal pins while the two devices exchange electrons, which
>will destroy that or those signals.
> If your system is well grounded, not a great risk; I do it all
>the time with those I use.
>
How do I know if my system is well grounded?
Thanks,
Changhsu Liu
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