Your Cat6 cabling not behaving as you would expect? Turns out that is not a Fluke

Subject: General Tech | February 1, 2016 - 09:49 PM |
Tagged: fluke, fail, cat6

The difference between Cat5(e) and Cat 6 will not be obvious for home users but is certainly noticeable in large business deployments.  Cat5 and 5e are capable of providing 100MHz whereas Cat6 is rated to 250MHz, assuming it is installed to specifications.  In addition to the increased frequency, Cat6 is has much greater protection against crosstalk and system noise which is far more important to many sysadmins. 

Previously we benefited from the honour system in place, many Cat 5 cables actually met the Cat 5e specification but it seems that this is not the case with Cat 6.  Hack a Day has heard word through a cable provider that Fluke noticed that 80% of the Cat 6 tested with their equipment does not meet specification, in many cases it does not even meet Cat 5e specs.  Since a Fluke line tester capable of analyzing network cabling to this degree of accuracy costs north of $10,000 not all companies are going to have their networks fully tested for compliance.  This may be why you are seeing odd behaviour on your network.


"So they did some research and purchased a Fluke certification tester for a measly 12,000 US dollars. While they were purchasing the device, they ran across an interesting tidbit in the fluke knowledge base. Fluke said that 80% of the consumer Cat 6 cables they tested didn’t begin to meet the Cat 6 specification."

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Source: Hack a Day

CAT6 could beat DisplayPort at its own game

Subject: General Tech, Displays | May 2, 2011 - 03:43 PM |
Tagged: hdcp, cat6, gefen

Gefen is not a famous company but they are one with an interesting idea that they've just made real.  They will sell you a box that can extend a HDCP compliant signal along CAT6 cable of up to 1920x 1200  resolution as far as 200'.  It can send a 2560 x 1600 using a pair of CAT 6 cables, though that signal does not seem to be HDCP compliant.  The only down side is the price, at $1300 this is not something you buy because it is neat, but because you really need it.


"CHATSWORTH, CA – The leader in digital connectivity announced the release of its new extender for professional computer systems using dual link DVI graphics. The DVI DL CAT-6 Extender offers a plug and play method of signal extension that guarantees a lossless video transmission with zero signal dropouts.

The next generation DVI DL CAT-6 Extender delivers uncompressed high resolution video to any remote display up to 200 feet (60m) in distance over two industry-standard CAT-6 cables. This is a substantial advantage over previous solutions, which required an add-on booster using more expensive cabling to handle distances beyond five meters. "

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Source: Gefen