hjg@gor.UUCP (harry gross) (08/01/88)
Several years ago (1981-1982) I was involved in a project that connected about
20 VT-100 terminals with a DEC PDP-11/45. All of the connections were
"standard RS-232" and all were running at 9600 baud. The cable runs were
anywhere from 100' to 1000' feet (yes I did say 1000' at 9600 baud). All the
cables were shielded, twisted pair cables. Each of the active lines was
twisted with a grounded line (which was tied in to the shield). All of the
cable runs were through a factory, with LOTS of heavy machinery which was
constantly starting and stopping (_very_ noisy, electrically).
The end result of all this exposition is to point out that in the 5 months that
I was on site, there was not a single glitch that could be attributed to the
length of the cable runs or the noisy environment.
Therefore, I must conclude (based on my experience, of course), that _if_ you
use a properly shielded cable, you ought to have no problem.
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Harry Gross | This space reserved for a really
UUCP: {phri,bc-cis,nyit,icus}!gor!hjg | clever quote -
Internet: hjg@gor.UUCP | any suggestions?
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