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Black Box Explains...Shielded vs. unshielded cable.

The environment determines whether cable should be shielded or unshielded.

Shielding is the sheath surrounding and protecting the cable wires from electromagnetic leakage and interference. Sources of this electromagnetic activity... more/see it now(EMI)—commonly referred to as noise—include elevator motors, fluorescent lights, generators, air conditioners, and photocopiers. To protect data in areas with high EMI, choose a shielded cable.

Foil is the most basic cable shield, but a copper-braid shield provides more protection. Shielding also protects cables from rodent damage. Use a foil-shielded cable in busy office or retail environments. For industrial environments, you might want to choose a copper-braid shield.

For quiet office environments, choose unshielded cable. collapse

  • Manual... 
  • CAT6A Shielded Feed-Through Patch Panels User Manual
    User Manual for the C6AFP70S-24 & C6AFP70S-48 (Version 1)
 
  • Pdf Drawing... 
  • 96-Port CAT5e Econo Patch Panel Drawing
    Drawing for the JPM114A-R5
 
  • Pdf Drawing... 
  • GigaStation2 High-Density Multimedia Patch Panel (16-Port, 1U) PDF Drawing
    PDF Drawing for the JPMT1016A
 
  • Pdf Drawing... 
  • GigaStation2 High-Density Multimedia Patch Panel (36-Port, 1U) PDF Drawing
    PDF Drawing for the JPMT1036A
 
  • Pdf Drawing... 
  • CAT5e Feed-Through Patch Panel (Unshielded, 24-Port) Drawing
    Drawing for the JPM808A-R2.
 
  • Pdf Drawing... 
  • SpaceGAIN CAT6 Half-U Patch Panel (24-Port, Unshielded) PDF Drawing
    PDF Drawing for the JPM624A-HU
 
  • Manual... 
  • SpaceGAIN CAT6 High-Density Feed-Through Patch Panel Manual
    Manual for the JPM816A-HD, and JPM820A-HD (Version 1)
 
  • Pdf Drawing... 
  • SpaceGAIN CAT6 45 Degree Angled-Port Patch Panel (24-Port, Up) PDF Drawing
    PDF Drawing for the JPM624-45ANG-U
 

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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