9 Nov
2011
9 Nov
'11
12:17 p.m.
It's been a while, but I think what the spec says
is that you can short
together any combination or combinations of pins indefinitely without
damage. I don't recall anything about connecting them to low-impedance
Yes, you are probably (almost certainly) right.
However, since the inputs are voltage-sensivity, you should be able to
apply any votlag between -25V to +25V to any othem without damage (since
that's what a valid RS232 ooutput could do) even with the device
powered-down.
I cna't rememebr how many outpus there are on na RS232 conenctor, but it
seems to me that the spec means you could short all of them together,
have all but one in one state and that one in the other state without
damaging anything. And 'all but one in one sate' is going to be a much
lower inpedance voltage source than a single output.
RS232 ports (properly designed ones) are fairly hard to damage electrically.
-tony