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A norma TIA/EIA-568-B especifica os testes. O cabo de cobre deve passar todos os teste antes de

A norma TIA/EIA-568-B especifica os testes. O cabo de cobre deve passar todos os teste antes de poder ser utilizado em redes locais.

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A norma TIA/EIA-568-B especifica os testes. O cabo de cobre deve passar todos os teste antes de

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  1. A norma TIA/EIA-568-B especifica os testes. O cabo de cobre deve passar todos os teste antes de poder ser utilizado em redes locais. 􀂾 Malha Elétrica (Wire Map) 􀂾 Comprimento (Cable Lenght) 􀂾 Diafonia (Crosstalk )(NEXT) 􀂾 Retardo de Propagação (Propagation Delay) 􀂾 Inclinação de Retardo (Delay Skew) 􀂾 Atenuação (Attenuation) 􀂾 Impedância (Impedance)

  2. Uma NIC transmite sinais nos pinos 1 e 2 e recebe sinais nos pinos 3 e 6. Um hub ou um switch recebe sinais nos pinos 1 e 2 e transmite sinais nos pinos 3 e 6.

  3. Mapa de Fios

  4. Falhas de Fios

  5. Medidas de Crosstalk O crosstalk é medido em quatro testes separados: NEXT PSNEXT FEXT. ELFEXT

  6. Tipos de Crosstalk Existem três tipos de crosstalk: Near-End crossTalk – NEXT Far-End crossTalk – FEXT Power Sum Near-End crossTalk – PSNEXT

  7. NEXT – Near-end Crosstalk

  8. FEXT – Far-end Crosstalk

  9. PSNEXT - Power Sum Near-end Crosstalk

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