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  • Pdf Drawing... 
  • USOC RJ-11 Jack (Yellow) PDF Drawing
    PDF Drawing of the FMT248 and FMT248-25PAK (Version 1)
  • Pdf Drawing... 
  • SpaceGAIN CAT6 High-Density Feed-Through Patch Panel (Shielded, 48-Port, 1U) Drawing
    PDF Drawing for the JPM816A-HD.
  • Pdf Drawing... 
  • CAT6 Straight-Through Coupler (Off-White) PDF Drawing
    PDF Drawing for the FM607 and FM607-10PAK (Version 1)

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

Unshielded twisted pair
This is the most widely used cable. Known as balanced twisted pair, UTP consists of twisted pairs (usually four) in a PVC or plenum jacket. When installing... more/see it nowUTP cable, make sure you use trained technicians. Field terminations, bend radius, pulling tension, and cinching can all loosen pair twists and degrade performance. Also take note of any sources of EMI. Choose UTP for electrically quiet environments.

Shielded twisted pair
Over the past twenty years, the need for speed in networking has driven new cabling specifications and technologies at an ever-accelerating rate. Alongside the development of each generation of Ethernet are corresponding developments in cabling technologies. Part of that development is the increased use of shielded cable. It's becoming more common in high-speed networks, especially when it comes to minimizing ANEXT in 10-GbE runs.

Shielding is the sheath surrounding and protecting the cable wires. Shielded cable was traditionally used to extend distances and to minimize EMI. It still is. Sources of EMI, commonly referred to as noise, include elevator motors, fluorescent lights, generators, air conditioners, and printers.

Shielded cable can be less balanced than UTP cable because of the shield. The metal sheaths in the cable need to be grounded to cancel the effect of EMI on the conductors. Shielded cable is also more expensive, less flexible, and can be more difficult to install than UTP cable because of the grounding and bonding.

Most shielded cable is thicker than UTP, so it fills conduits quicker. Keep that in mind as you plan your cable pathways.

Types of shields.
There are a number of different types of shielded twisted pair cable and the terminology has evolved over the years. There are two common shields: foil sheaths and copper/metal braids.

Foil gives a 100% shield while a copper braid provides 85% to 95% coverage because of the holes in the braid. But, a braided shield offers better overall protection because it’s denser than foil and absorbs more EMI. A braided shield also performs better at lower frequencies. Foil, being thinner, rejects less interference, but provides better protection over a wider range of frequencies. For these reasons, combination foil and braid shields are sometimes used for the best protection. Shields can surround all the twisted pairs and/or the individual twisted pairs.

Shielding acronyms
Shielding acronyms have evolved over the years after confusion as to what FTP is versus STP and S/FTP. Now, the letter for the outer shield (under the cable jacket) is noted first.

The letter after the slash denotes any shield on the individual twisted pairs.

U/FTP (Unshielded/Foiled Twisted Pair). This cable does not have an overall outer shield. It does have foil shields on each of the four pairs. Formerly called FTP.

F/UTP (Foiled/Unshielded Twisted Pair). This cable has an overall foil shield surrounding all the pairs. Formerly called FTP.

S/FTP (Screened/Foiled Twisted Pair). This cable features an overall braided or screened shield underneath the cable jacket. It has individual foil shields on each twisted pair.

F/FTP (Foiled/Foiled Twisted Pair). This cable features an overall foil shield underneath the cable jacket. It has individual foil shields on each twisted pair. Formerly called S/FTP.

S/FTP and F/FTP cables offer the best protection from external noise and ANEXT. collapse

  • Pdf Drawing... 
  • USOC RJ-11 Jack (Office White) PDF Drawing
    PDF Drawing of the FMT243 and FMT243-25PAK (Version 1)
  • Pdf Drawing... 
  • Color-Coded Snagless Pre-Plug (Black) PDF Drawing
    PDF Drawing for the FMT718
  • Pdf Drawing... 
  • MTP-MTP Bulkhead Adapter with Cap (Panel-Mount) PDF Drawing
    PDF Drawing for the FOT129

Black Box Explains...What to look for in a channel solution.

Channel solution. You hear the term a lot these days to describe complete copper or fiber cabling systems. But what exactly is a channel solution and what are its benefits?... more/see it now

A definition.
A channel solution is a cabling system from the data center to the desktop where every cable, jack, and patch panel is designed to work together and give you consistent end-to-end performance when compared with the EIA/TIA requirements.

Its benefits.
A channel solution is beneficial because you have some assurance that your cabling components will perform as specified. Without that assurance, one part may not be doing its job, so your entire system may not be performing up to standard, which is a problem — especially if you rely on bandwidth-heavy links for video and voice.

What to look for.
There are a lot of channel solutions advertised on the Internet and elsewhere. So what exactly should you be looking for?

For one, make sure it’s a fully tested, guaranteed channel solution. The facts show an inferior cabling system can cause up to 70 percent of network downtime — even though it usually represents only 5 percent of an initial network investment. So don’t risk widespread failure by skimping on a system that doesn’t offer guaranteed channel performance. You need to make sure the products are engineered to meet or go beyond the key measurements for CAT5e or CAT6 performance.

And, sure, they may be designed to work together, but does the supplier absolutely guarantee how well they perform as part of a channel — end to end? Don’t just rely on what the supplier says. They may claim their products meet CAT5e or CAT6 requirements, but the proof is in the performance. Start by asking if the channel solution is independently tested and certified by a reputable third party. There are a lot of suppliers out there who don’t have the trademarked ETL approval logo, for example.

What ETL Verified means.
The ETL logo certifies that a channel solution has been found to be in compliance with recognized standards. To ensure consistent top quality, Black Box participates in independent third-party testing by InterTek Testing Services/ETL Semko, Inc. Once a quarter, an Intertek inspector visits Black Box and randomly selects cable and cabling products for testing.

The GigaTrue® CAT6 and GigaBase® CAT5e Solid Bulk Cable are ETL Verified at the component level to verify that they conform to the applicable industry standards. The GigaTrue® CAT6 and GigaBase® CAT5e Channels, consisting of bulk cable, patch cable, jacks, patch panels, and wiring blocks, are tested and verified according to industry standards in a LAN environment under InterTek’s Cabling System Channel Verification Program. For the latest test results, contact our FREE Tech Support. collapse

  • Pdf Drawing... 
  • SpaceGAIN CAT5e Half-U Patch Panel (24-Port, Unshielded) PDF Drawing
    PDF Drawing for the JPM5E24A-HU
  • Pdf Drawing... 
  • 96-Port GigaBase CAT5e Patch Panel
    Drawing for the JPM910A-R4
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