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Product Data Sheets (pdf)...CAT6 400-MHz, Shielded, Solid Backbone Cable

  • Pdf Drawing... 
  • GigaBase 350 CAT5e Patch Cable with Snagless Boots (Pink) PDF Drawing
    PDF Drawing of EVNSL86 series
 

Black Box Explains... Crosstalk.

One of the most important cable measurements is Near-End Crosstalk (NEXT). It’s signal interference from one pair that adversely affects another pair on the same end.

Not only can crosstalk... more/see it nowoccur between adjacent wire pairs (“pair-to-pair NEXT“), but all other pairs in a UTP cable can also contribute their own levels of both near-end and far-end crosstalk, multiplying the adverse effects of this interference onto a transmitting or receiving wire pair.

Because such compounded levels of interference can prove crippling in high-speed networks, some cable manufacturers have begun listing Power Sum NEXT (PS-NEXT), FEXT, ELFEXT, and PS-ELFEXT ratings for their CAT5e and CAT6 cables. Here are explanations of the different types of measurements:

NEXT measures an unwanted signal transmitted from one pair to another on the near end.

PS-NEXT (Power Sum crosstalk) is a more rigorous crosstalk measurement that includes the total sum of all interference that can possibly occur between one pair and all the adjacent pairs in the same cable sheath. It measures the unwanted signals from multiple pairs at the near end onto another pair at the near end.

FEXT (Far-End crosstalk) measures an unwanted signal from a pair transmitting on the near end onto a pair at the far end. This measurement takes full-duplex operation into account where signals are generated simultaneously on both ends.

ELFEXT (Equal-Level Far-End Crosstalk) measures the FEXT in relation to the received signal level measured on that same pair. It basically measures interference without the effects of attenuation—the equal level.

PS-ELFEXT (Power Sum Equal-Level Far-End Crosstalk), an increasingly common measurement, measures the total sum of all intereference from pairs on the far end to a pair on the near end without the effects of attenuation. collapse

  • Pdf Drawing... 
  • GigaBase 350 CAT5e Patch Cable with Snagless Boots (Purple) PDF Drawing
    PDF Drawing for the EVNSL88 series.
 
  • Pdf Drawing... 
  • GigaTrue%XAE CAT6 Component 550-MHz Patch Cable with Molded Boots (Green) PDF Drawing
    PDF Drawing for the EVNSL672-0003, EVNSL672-0005, EVNSL672-0007, EVNSL672-0010, EVNSL672-0015, and EVNSL672-0020
 

Black Box Explains...Augmented Category 6 (CAT6A).


Augmented Category 6 (CAT6a)–Class Ea was ratified in February 2008. This standard calls for 10-Gigabit Ethernet data transmission over a 4-pair copper cabling system up to 100 meters. CAT6a extends... more/see it nowCAT6 electrical specifications from 250 MHz to 500 MHz. It introduces the ANEXT requirement. It also replaces the term Equal Level Far-End Crosstalk (ELFEXT) with Attenuation to Crosstalk Ratio, Far-End (ACRF) to mesh with ISO terminology. CAT6a provides improved insertion loss over CAT6. It is a good choice for noisy environments with lots of EMI. CAT6a is also well-suited for use with PoE+.

CAT6a UTP cable is significantly larger than CAT6 cable. It features larger conductors, usually 22 AWG, and is designed with more space between the pairs to minimize ANEXT. The outside diameter of CAT6a cable averages 0.29–0.35" compared to 0.21–0.24" for CAT6 cable. This reduces number of cables you can fit in a conduit. At a 40% fill ratio, you can run three CAT6a cables in a 3/4" conduit vs. five CAT6 cables.

There are two types of CAT6a cable, UTP and F/UTP.

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  • Pdf Drawing... 
  • TAA GigaTrue%XAE 3 CAT6 550-MHz Patch Cable (UTP, Lockable, Slimline, Gray) PDF Drawing
    PDF Drawing for the C6PC80-GY-03, C6PC80-GY-05, C6PC80-GY-07, C6PC80-GY-10, C6PC80-GY-15, & C6PC80-GY-20 (Version 1)
 

  • Pdf Drawing... 
  • GigaBase 350 CAT5e Patch Cable with Snagless Boots (Gray) PDF Drawing
    PDF Drawing for the EVNSL80 series.
 
  • Pdf Drawing... 
  • TAA GigaTrue%XAE 3 CAT6A 650-MHz Patch Cable (F/UTP, Slimline, Lockable, White) PDF Drawing
    PDF Drawing for the C6APC80S-WH-03, C6APC80S-WH-05, C6APC80S-WH-07, C6APC80S-WH-10, C6APC80S-WH-15, & C6APC80S-WH-20 (Version 1)
 
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