On Fri, 16 Jul 1999, Louis A. Mamakos wrote:
> > : Good point but I think it's like how much of 100Mhz a 100BaseTX
> > :can push. If it pushes 100%, then it might be wise to have a little more
> > :room for overhead. Kinda like a car, better to have reserve power when
> > :you need it then pushing it to the max. In regards to 1000BaseT, I
> > :thought there was no standards for that yet, atleast all the Gigabit stuff
> > :is all fiber and not copper. Quality of cable does matter, atleast in
> > :high-end audio/video it does and I'm sure data would be more picky than
> > :human ears.
> >
> > The copper gigabit standard isn't out yet, but I was under the impression
> > that they were pretty close.
> >
> > In regards to audio/video verses ethernet, you have to remember that
> > audio and video are *analog*, not digital. The cable quality matters
> > for analog, but it only needs to be "good enough" for digital. If you
> > don't get any bit errors (and you shouldn't) then a better cable is not
> > going to make a difference.
>
> One of the big deals with the different grades of cable is the degree of
> crosstalk between the transmit and receive pairs in the cable sheath.
> When you're talking about Category-3 or Category-5 cable systems, this
> INCLUDES the connectors, patch panels, cross-connect blocks and cross-connect
> cables.
Yep, everything in the chain counts.
> For instance, you have to work pretty hard to do better than 10Base-T
> with a Category-3 wiring system if you have type 66 punch blocks
> because of the impedence bump and crosstalk issues. Same sort of things
> apply at 100base-T and Category-5 cable systems. Using gold-plated
> "Monster Cable" is just pissing away money of the other components are
> also up to the same level of "quality" (har, har).
I wouldn't rate Monster Cable as really high quality since it
seems like their stuff is more marketing then the true value.
> And, as Matt said, if you're not getting CRC errors then it's good
> enough, and there's no point spending money to get better wire.
I know, I'm just wondering how did they get more frequency out of
wire of the same size. I can understand it if the wire was a larger
guage.
> louie
> (who uses #12 ROMEX cable for speaker wire.)
Cheers,
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