Re: specifying Really Long serial cable

From: Andrey (a8421_at_intergate.bc.ca)
Date: 10/19/04 

Date: Mon, 18 Oct 2004 17:59:21 -0700

Gentlemen,

thank you all for the comments, I learned a lot.

Sincerely,

Andrey

"Guy Macon" <http://www.guymacon.com> wrote in message
news:10n6phm6j849s57@news.supernews.com...
>
> Andrey <a8421@intergate.bc.ca> says...
>
> >what would be wise recommendations for 100 ft long Serial cable.
> >
> >should it be shielded or not? (from interference point of view it should.
> >But capacitance per length will go up. ??)
> >
> >Is there any reason not to use heavier gauge wires?
> >
> >What would be good cable for extended temperature range (-40C to +70C)
and
> >outsides (Sun, rain included)
>
> What baud rate? TXD and RXD only, or handshaking?
>
> Cat5 outdoor cable will handle the weather just fine and makes a fine
> RS232 cable.
>
> You can put the cable inside a PVC pipe or inside a high-quality
> garden hose for protection against weather or physical damage.
> Better yet would be a grounded metal pipe.
>
> Interference won't be a big problem. Ground currents might be.
> How sure are you that there isn't a voltage between the grounds
> at the two ends?
>
> What I would be concerned about most would be lighning strikes.
> Do you have a plan to protect your equipment?
>
> You really should consider putting optically Isolated RS-232 to
> RS-422/485 Converters on both ends. Start here:
> http://www.bb-elec.com/technical_library.asp
> http://www.bb-elec.com/product_family.asp?familyid=14
>
> --
> Guy Macon <http://www.guymacon.com>
>

Relevant Pages

  • Re: specifying Really Long serial cable
    ... Cat5 outdoor cable will handle the weather just fine and makes a fine ... garden hose for protection against weather or physical damage. ... Better yet would be a grounded metal pipe. ... Interference won't be a big problem. ...
    (sci.electronics.design)
  • Re: Is this legal
    ... weather, and the shopping can be carried as well (either in the ... Pros of trailer (vs child seat) ... Weather protection ... Stability (Even when the bike falls over) ...
    (uk.rec.cycling)
  • Re: You want a nice reliable BMW, you do
    ... the panniers and will sit at 80-90 all day long. ... And the weather ... protection is superb. ...
    (uk.rec.motorcycles)
  • Re: Cirrus Killer? Cessna just doesnt get it...
    ... > john smith wrote: ... >> I will take being able to stand up out of the weather under the ... >> protection of the high wing any day over trying to hold an umbrella while ...
    (rec.aviation.piloting)
  • Re: You want a nice reliable BMW, you do
    ... the panniers and will sit at 80-90 all day long. ... And the weather ... protection is superb. ...
    (uk.rec.motorcycles)