How far can you drag a cat-5(ethernet) cable before it loses effectiveness? i.e. signal loss?

[davidos]

Thanks!

 

[JackMDS]

The standart is 100Meters.

:sun:

 

[Macro2]

drag?

 

[ViperXX]

100 Meters= 328 feet

 

[Lotdog]

Originally posted by: ViperXX
100 Meters= 328 feet

 

[Concillian]

Keep in mind the 100 meters is a SUM of cable from computer to computer. No two computers can be further than 100 cable meters from one another.

So you couldn't have a 1 meter patch cable on the end if your in-wall portion was 100 meters.

 

[spidey07]

Originally posted by: Concillian
Keep in mind the 100 meters is a SUM of cable from computer to computer. No two computers can be further than 100 cable meters from one another.

So you couldn't have a 1 meter patch cable on the end if your in-wall portion was 100 meters.

heh, actually the spec is 90 meters of horizontal cable and 5 meter patch cable on each end.

 

[imported_Paladin]

I have sent 10baseT over 350 feet on no-cat underground telephone cable. There is *signal loss* no matter how long or how short the cable is. But this is a digital signal, not analog. Signal strength and signal to noise ratios do not matter as long as the receiving end can still determine if it is looking at a one or a zero. Until the signal drops below this threshhold there is *NO* loss of effectiveness. The cable will either work, or not work. (there are, of course, rare exceptions.)

The shorter the cable the more you can abuse it before it will not pass data. The specifications tell you how you *should* run it (1" minumum bend radius, no tight wrap-ties/staples, etc.) and how far it *should* go (above mentioned 100 meters including patch cables if any.) What it *will* do can only be determined by actual on-site testing with a working signal.

That said, you want to stay well within specs.

 

[spidey07]

Originally posted by: Paladin
I have sent 10baseT over 350 feet on no-cat underground telephone cable. There is *signal loss* no matter how long or how short the cable is. But this is a digital signal, not analog. Signal strength and signal to noise ratios do not matter as long as the receiving end can still determine if it is looking at a one or a zero. Until the signal drops below this threshhold there is *NO* loss of effectiveness. The cable will either work, or not work. (there are, of course, rare exceptions.)

The shorter the cable the more you can abuse it before it will not pass data. The specifications tell you how you *should* run it (1" minumum bend radius, no tight wrap-ties/staples, etc.) and how far it *should* go (above mentioned 100 meters including patch cables if any.) What it *will* do can only be determined by actual on-site testing with a working signal.

That said, you want to stay well within specs.

well, kinda sorta.

it isn't really a 1 or zero on the cable. It is an analog signal running at 125 Megahertz (the carrier). You can have cables our of spec that will get link but not work at all. You can have cables out of spec that only produce a few errors and are slow. You can have cables that receive just fine but the transmit never makes it. Or a cable that only starts showing errors when the traffic is over 10 percent utilization.

all sorts of weird stuff can happen when you go out of spec.

I guess I'm just trying to say its a whole lot more complicated then it either works or it doesn't because most always if you are out of spec it "sorta" works.....jut not very well.