Main Area and Open Discussion > Living Room

CAT5 splitter?

<< < (2/2)

Ath:
Well, IMHO it works a bit differently on the twisted pair side:
Each wire-pair has the 'standard' signal on one wire (+), and the same signal inverted on the other wire (-), effectively resolving into reverse fields generated, resulting into no (0) transmission by the wire-pair.
Google Images over here, that probably explains it better

Well, that's the (theoretical) story using my slim translation skills :-[

Stoic Joker:
Because any wire that carries an electric signal will act as a antenna. And the internal wires of a cat 5 cable are pretty densely twisted...which is done on purpose, as there are only 4 wires that carry signals while the other 4 act as "dummies", catching as much external interference as possible, so the signal carrying wires have a better chance of getting their signals through.-Shades (December 03, 2015, 05:58 PM)
--- End quote ---

At the risk of sounding pedantic ... For 10/100 yes, but Gigabit uses all 8 conductors. So if someone wanted to use the other type of Cat5 splitter to run 2 lines over one cable - that can be handy in a pinch - they need to know that their Gb hardware will drop to 100Mb because of the no longer extra 2 pairs being used by the other run.

Shades:
If we are pedantic... :P

1000Base-T uses indeed all 8 wires in CAT-5, CAT-5e, CAT-6 and CAT-7 types of cable.
1000Base-TX again uses only 4 wires of CAT-6 type cable.

That is according to the defined standards of the IEEE (1000BASE-T) and the Telecommunications Industry Association (1000BASE-TX). Word to the wise, reading the IEEE pdf from the first link will make you know much more than you ever wanted to about UTP cables...

If that isn't already confusing enough...marketing departments deemed it wise to add TX to the names from (some of) their NICs, while those only support the 1000Base-T standard.

Stoic Joker:
1000Base-T uses indeed all 8 wires in CAT-5, CAT-5e, CAT-6 and CAT-7 types of cable.
1000Base-TX again uses only 4 wires of CAT-6 type cable.-Shades (December 04, 2015, 07:30 AM)
--- End quote ---


Interesting, I've apparently either never noticed...or never run into that particular detail before. However I get the impression it never really caught on as they say. So it's probably safer to (perhaps erroneously) assume the 4 pair Base-T requirement, as the chances of 2 of them playing well stuffed into the same cable don't strike me as being real high.

Navigation

[0] Message Index

[*] Previous page