Re: Maximum serial cable length for hardwired machine?
Allen J. Newton (anewton@basis.com)
Fri, 27 Oct 1995 13:15:28 -0600 (MDT)
Brian Tao wrote:
> Subject: Maximum serial cable length for hardwired machine?
>
> I have a customer located in the same building we are, and they
> would like to set up a small network in their offices with e-mail
> access. I figured the most inexpensive way would be simply to run a
> hardwired PPP connection to their router via a long serial cable to
> one of our PM-2e's. That way we can take advantage of our existing
> accounting software to track their usage.
>
> How far can I pull a cable like this without signal degradation?
> A common figure I hear thrown around is 50 feet. Is this RS-232 or
> RS-422 or what? I estimate I will need about 80 to 100 feet of cable
> run to reach their router. Will installing a couple of signal
> repeaters be all that is required? Does anyone have any experience
> with hardwired serial connections in the 50 to 200-foot distance
> range? The PM-2e and their router will be communicating at 57.6kbps.
>
> All suggestions welcome, thanks.
There's a product called LongLink which I've used (I forget the
manufacturer's name, sorry -- but look in any computer supplies catalog,
you'll know it when you see it). They work great! Any equivalent product
will work as well.
I've never run them at 57.6K, though, but don't see a problem with it. I
don't believe there's any baud restrictions, AFAIK they're just voltage
boosters...
--
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Allen J. Newton BASIS International Ltd, (505)-345-5232
5901 Jefferson NE, Albuquerque, New Mexico 87109
anewton@basis.com Network Administrator <*>