Which network-cable would you use CAT6 S/FTP CAT7 S/FTP or CAT 7 SF/FTP

Other Hardware General Electronics
1

Hello everybody,

I hope this still fits into this category general electronics even if it is not microcontroller-related
I got a new glasfiber 1000 MBit internetconnection. I mean there is my WLAN-router and from this router a copper network-cable is connected to the glasfiber-boxcoming into my house from the street.

I want to make really sure that EMV is kept out as best as possible from this cable.

Network-cable start at U/UTP unshielded, unshielded twisted pair
going up to S/FTP shielded foiled twisted pair and even more
SF/FTP shielded Foil / foil twisted pair.

I need a pretty long cable 25 m or 30 m long with RJ45-connectors professionally mounted on both ends but a SF/FTP-cable seems not available in such a big length.

So if somebody is experienced in this subject: how big is the difference between a
S/FTP shielded foil twisted pair
and
SF/FTP shielded and foiled / foiled twisted pair cable
in combination with using it as a cable that shall be able to be used with a real 1GBit connection. The glasfiber can do 1 GBit and the router can do 1GBit too.
Of course in reality in might be less than 1 GBit but it shall not drop down to 0,2 GBit only because the main cable hasn't enough quality.

best regards Stefan

2

Hi,
about CAT7 cable:
Date: BY CABLE MATTERS / JUN 14, 2022 / BLOG / NETWORKING
Ref:
"What is Cat7 - and why you don’t need it."

" No nod for Cat7

While connector preference drove some people and companies away from Cat7 though, arguably the most important factor in its low popularity is that it lacks the official stamp of approval from the Institute of Electrical and Electronics Engineers (IEEE) and Electronic Industries Alliance (EIA). That doesn't preclude anyone from using Cat7 cables, but it does mean many are less inclined to do so. "

and...

Ref:
"https://www.comms-express.com/infozone/article/cat7-cables-category-7a-cable/#:~:text=The%20Cat7%20standard%20supports%2010,of%20up%20to%201000%20MHz."

" The Cat7 standard supports 10 Gigabit Ethernet. Reliable Ethernet installations will run Category 7 cable to a maximum length of 100 metres. This cable category can transmit data with frequencies of up to 600 MHz. An Augmented Category 7 standard, referred to as Cat7a, delivers a performance of up to 1000 MHz."

3

You don't know how envious that makes me...

But to answer your question, 1Gb/s is fine over cat 5 UTP. 30m is not 'pretty long', it's well within the specification, which is good for 100m. You don't need anything special, just make sure you get proper cable, none of the useless copper coated aluminium rubbish.

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4

I would agree, there should be no problems with properly installed Cat5(E) at 1Gbs.

Although I do seem to recall that 'specification' for the installed cable used to be, 90M max for the fixed, solid twisted pair, plus 5M at either end for multicore patch cables.

5

And the really good explanation for that is ?

6

not sure what you mean by that.

very good shielding to keep out electromagnetic noise as hard as I can.
If you mean something different you have to ask much more precise what you want to ask or what you want to express with that question

7

You are worrying about nothing, you don't need anything that special to get 1Gb/s over 30m

8

+1
And standard Cat-5 or Cat-6 can do twice the speed of 1Gbs fibre.
Leo..

1 Like
9

I agree too. Unless your motivation is that the 30M run is through the garage full of operating machine equipment and Tesla coils.

I may be doing something similar soon. (fiber internet. Not garage full of Tesla coils!)

10

Hello everybody,

thank you very much for answering. You convinced me: some cheaper Cat5 or 6-cable will do. No Tesla-Coils no machines near to the cable in my barn. Only a few plants, the usual lighting, some sockets, bicycles and a lawn mower.

best regards Stefan

1 Like
11

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