Ethernet LAN Min Length of Patch Lead

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Subject Author Date
Min Length of Patch Lead garry 06-21-06
Posted by garry on June 21, 2006, 2:49 pm
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Is there defined somewhere a minimum length of patch leads?
Historically we are using 1.5M patch leads because someone stated that
.5m patch leads are not allowed for Cat5 installations ?

anyone know
garry

Posted by glen herrmannsfeldt on June 22, 2006, 3:09 am
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garry wrote:
> Is there defined somewhere a minimum length of patch leads?
> Historically we are using 1.5M patch leads because someone stated that
> .5m patch leads are not allowed for Cat5 installations ?

About 3cm, otherwise you can't get it into both connectors.
None of the UTP ethernet standards I know of have a minimum.

I believe that some fiber systems do, where they assume some
attenuation so as not to saturate the receiver.

The attenuation difference between 0.5m and 1.5m UTP cable
is pretty small.

-- glen


Posted by garry on June 26, 2006, 4:35 am
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glen herrmannsfeldt wrote:
> garry wrote:
>
>> Is there defined somewhere a minimum length of patch leads?
>> Historically we are using 1.5M patch leads because someone stated that
>> .5m patch leads are not allowed for Cat5 installations ?
>
>
> About 3cm, otherwise you can't get it into both connectors.
> None of the UTP ethernet standards I know of have a minimum.
>
> I believe that some fiber systems do, where they assume some
> attenuation so as not to saturate the receiver.
>
> The attenuation difference between 0.5m and 1.5m UTP cable
> is pretty small.
>
> -- glen
>



Many thanks, thats what I thought but just wanted to check.


garry

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