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category 5 standard |
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Category 5 cabling is currently the most widely used medium for data transmission within the cabling industry. It is used in offices and homes a like. It was originally developed for voice, but was rapidly adapted to computer networks. It´s typically used for twisted pair high speed networks (100BASE-TX) over 22 or 24 AWG. |
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category 5 specifications |
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Standard |
Transmission parameter |
Channel performance |
Highest frequency
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CAT 5
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NEXT @ 100 MHz |
27.1 dB
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100 MHz
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PSNEXT @ 100 MHz
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NA
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Attenuation @ 100 MHz
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24.0 dB
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ELFEXT @ 100 MHz
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17.0 dB
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PSELFEXT @ 100 MHz
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14.4 dB
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Return Loss @ 100 MHz
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8.0 dB
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Propagation Delay @ 10 MHz
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555 ns
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Delay Skew |
50 ns |
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category 5e standard |
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New cabling standards are continually being considered for improvement. Advanced GUI applications are placing great demands on existing network cable speeds and it´s not even close to being over. The original category five standard has been in place for many years. The category 5 enhanced standard has only been released for a little over a year and category 6 is almost finalized as it´s replacement.
Category 5 enhanced operates at the same frequency (100MHZ) as CAT 5, with increases in certain channel performances. |
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category 5e specifications |
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Standard |
Transmission parameter |
Channel performance |
Improvement over Cat 5 standard |
Highest frequency
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CAT 5 Enhanced
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NEXT @ 100 MHz |
30.1 dB
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+ 3.0 dB
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100 MHz
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PSNEXT @ 100 MHz
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27.1 dB
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same
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Attenuation @ 100 MHz
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24.0 dB
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+ 0.4 dB
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ELFEXT @ 100 MHz
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17.0 dB
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same
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PSELFEXT @ 100 MHz
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14.4 dB
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+ 2.0 dB
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Return Loss @ 100 MHz
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10.0 dB
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same
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Propagation Delay @ 10 MHz
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555 ns
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same |
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Delay Skew |
50 ns |
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category 6, the next step |
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Well, the long awaited Category 6 standard has finally been approved and finalized. The Standard was officially released in early July. The latest specifications will be added to our site very soon.
What´s waiting in the wings?
Recommendations are currently being considered for Category 7 and the not yet named "Category 8" standards. Frequencies are expected to increase to 600 MHZ!!! |
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category 6 proposed specifications |
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Standard |
Transmission parameter |
Channel performance |
Improvement over Cat 5 standard |
Highest frequency
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CAT 5 Enhanced
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NEXT @ 100 MHz |
39.9 dB
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+ 9.8 dB
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250 MHz
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PSNEXT @ 100 MHz
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37.1 dB
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+10.0dB
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Attenuation @ 100 MHz
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21.2 dB
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- 2.8 dB
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ELFEXT @ 100 MHz
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23.2 dB
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+5.8 dB
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PSELFEXT @ 100 MHz
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20.2 dB
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+5.8 dB
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Return Loss @ 100 MHz
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12.0 dB
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+2.0 dB
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Propagation Delay @ 10 MHz
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555 ns
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same |
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Delay Skew |
50 ns |
same |
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