Cat 7 termination

Hi guys

What is the best one to use for cat 7 termination

Regards

Kai

B&O and ATLONA (HD-Matrix recommended by B&O) use termination according to 568B for the best performance.

I get the termination. Ok.

Question of interest:: does the 568A or 568B differ from stability or performance?

ATLONA says, version "B" gives you some extra feet of usable maximum lenght.

Beobuddy:

I get the termination. Ok.

Question of interest:: does the 568A or 568B differ from stability or performance?

Found this one

 

Thank  you both.

 

Didn't know that just switching 2 colours could make a difference. I already use the 568B version. But start to doubt if I have used it consequently from the beginning. (from 2004 til now)

Start to wonder if (according to the mentioned link) mixing the 568A and the 568B in a network could cause malfunction like less performance in case of streaming full BluRay contents from server to mediaplayer despite the use of a gigabit router (linksys E4200) and gigabit switches.

But don't want to hijack this topic

Beobuddy:

But don't want to hijack this topic

Its Cat 7, not hijacking, I think the only difference is how you have to twist the twisted pairs when connecting to the RJ 45 an/or the difference between STP and ScTP cables.

Beobuddy:

Start to wonder if (according to the mentioned link) mixing the 568A and the 568B in a network could cause malfunction like less performance in case of streaming full BluRay contents from server to mediaplayer despite the use of a gigabit router (linksys E4200) and gigabit switches.

Same difference if you run Ethernet on the cables.

But, if the cabling is used to deliver HDMI (as I presume the Atlona recommendation is about), the thing is a bit different. I'm not sure of the details, but I understand it has something to do with the signal routing from the female connector to the interface chips on the device PCB. In HDMI, the signals are balanced and at high bit rates timing (wire & trace length) becomes critical. 586A and B differ by which pair (green or orange) is split between pins 3 and 6, and I guess A is somehow worse for HDMI then.

tournedos:

 it has something to do with the signal routing from the female connector to the interface chips

So, it comes down to the specs of the used signals of the connector?

Normally the twisted pairs are balanced and less sensitive for noise coming from outside the cable. So probably pin 3 and 6 are a TX/RX combination? 

But still I'm surprised that a colour of a twisted pair inside a cable can make a difference. Both 568A and 568B uses pin 3 and pin 6 paired.

Or could (also) a possible mixe-up with crossed cables be the reason for standarding the colours? Using a several hundred metres cable, it isn't easy to check if you're dealing with a straight or crossed  cable.

 

But overall. Cat 6 and Cat 7 uses also 568B with just extra shielding which is connected to the shield of the connector.

I guess it might have something to do with how the coloured pairs are physically arranged inside the cable - I'm not sure. But if a respectable manufacturer recommends one wiring order above another, I suppose there must be a better reason than simply the colour on the insulator

Interesting comments I thought the only difference is one is the American way and the other is British as long as you follow the same wiring all the way through there should be no performance difference, I'm only going to be using the cable to run standard ml as that is all that is required at the moment but since this this was a complete rewire of the house thought I might as well be covered for the future, now lets hope that we can finally get a multi room audio from Bang & Olufsen :)

Beobuddy:

But still I'm surprised that a colour of a twisted pair inside a cable can make a difference.

It's definitively not "the colour of the insulation" that's making the difference.

For varios tech reasons each of the 4 twisted pairs in CAT 7 cables is twisted slightly different.

More or less twists per meter of a pair will need a slightly different lenght of wires used for that pair per meter of the cable.

Sockets, plugs, and cables are all the same, it's ternination 568 "A" or "B" that decides which pair is used
to "transport" a certain part of the signal.  

 

  

kai:

I'm only going to be using the cable to run standard ml as that is all that is required at the moment

 

For replacing ML by CAT7 cables order the B&O / TYCO Cat 7 cable via your B&O dealer. 

If you are going to use an other brand, it's mandatory the CAT 7 cable is specified as "S-FTP" = "Screened Foiled Twisted Pair"
The analoge ML signal needs that type of shielding / screening, especially in larger setups ...