ISO/IEC TR 11801-9904:2017 情報技術—顧客施設用の一般的なケーブルシステム—パート9904：2,5GBASE-Tおよび5GBASE-Tアプリケーションをサポートするために設置されたケーブルを使用するためのガイドライン | ページ 6

3.1.1

alien (exogenous) crosstalk

signal coupling from a disturbing pair of a channel to a disturbed pair of another channel

[SOURCE: ISO/IEC 11801:2002/AMD1:2008, 3.1.2]

3.1.2

alien (exogenous) far-end crosstalk loss

AFEXT

signal isolation between a disturbing pair of a channel and a disturbed pair of another channel, measured at the far-end

[SOURCE: SOURCE: ISO/IEC 11801:2002/AMD1:2008, 3.1.3]

3.1.3

alien (exogenous) near-end crosstalk loss

ANEXT

signal isolation between a disturbing pair of a channel and a disturbed pair of another channel, measured at the near-end

[SOURCE: ISO/IEC 11801:2002/AMD1:2008, 3.1.4]

3.1.4

attenuation to alien (exogenous) crosstalk ratio at the far-end

AACR-F

difference, in dB, between the alien far-end crosstalk loss from a disturbing pair of a channel and the insertion loss of a disturbed pair in another channel

[SOURCE: ISO/IEC 11801:2002/AMD1:2008, 3.1.7]

3.1.5

attenuation to alien (exogenous) crosstalk ratio at the near-end

AACR-N

difference, in dB, between the alien near-end crosstalk loss from a disturbing pair of a channel and the insertion loss of a disturbed pair in another channel

[SOURCE: ISO/IEC 11801:2002/AMD1:2008, 3.1.8]

3.1.6

attenuation to crosstalk ratio at the far-end

ACR-F

difference, in dB, between the far-end crosstalk loss from a disturbing pair of a channel and the insertion loss of a disturbed pair of the same channel

[SOURCE: ISO/IEC 11801:2002/AMD1:2008, 3.1.9]

3.1.7

attenuation to crosstalk ratio at the near-end

ACR-N

difference, in dB, between the near-end crosstalk loss from a disturbing pair of a channel and the insertion loss of a disturbed pair of the same channel

[SOURCE: ISO/IEC 11801:2002/AMD1:2008, 3.1.10]

3.1.8

equal level far-end crosstalk ratio

ELFEXT

difference, in dB, between the far-end crosstalk loss from a disturbing pair of a channel and the insertion loss of a disturbing pair of the same channel

[SOURCE: ISO/IEC 11801:2002/AMD1:2008, 3.1.35]

3.1.9

power sum alien (exogenous) far-end crosstalk loss

PSAFEXT

power sum of the signal isolation between multiple disturbing pairs of one or more channels and a disturbed pair of another channel, measured at the far-end

[SOURCE: ISO/IEC 11801:2002/AMD1:2008, 3.1.64]

3.1.10

power sum alien (exogenous) near-end crosstalk loss

PSANEXT

power sum of the signal isolation between multiple disturbing pairs of one or more channels and a disturbed pair of another channel, measured at the near-end

[SOURCE: ISO/IEC 11801:2002/AMD1:2008, 3.1.65]

3.1.11

power sum attenuation to alien (exogenous) crosstalk ratio at the far-end

PSAACR-F

difference, in dB, between the power sum alien far-end crosstalk loss from multiple disturbing pairs of one or more channels and the insertion loss of a disturbed pair in another channel

[SOURCE: ISO/IEC 11801:2002/AMD1:2008, 3.1.66]

3.1.12

power sum attenuation to alien (exogenous) crosstalk ratio at the near-end

PSAACR-N

difference, in dB, between the power sum alien near-end crosstalk loss from multiple disturbing pairs of one or more channels and the insertion loss of a disturbed pair in another channel

[SOURCE: ISO/IEC 11801:2002/AMD1:2008, 3.1.67]

3.1.13

power sum attenuation to crosstalk ratio at the far-end

PSACR-F

difference, in dB, between the power sum far-end crosstalk loss from multiple disturbing pairs of a channel and the insertion loss of a disturbed pair in the same channel

[SOURCE: ISO/IEC 11801:2002/AMD1:2008, 3.1.68]

3.1.14

power sum attenuation to crosstalk ratio at the near-end

PSACR-N

difference, in dB, between the power sum near-end crosstalk loss from multiple disturbing pairs of a channel and the insertion loss of a disturbed pair in the same channel

[SOURCE: ISO/IEC 11801:2002/AMD1:2008, 3.1.69]

3.1.15

power sum equal level far-end crosstalk ratio

PSELFEXT

power sum of all disturbing pairs of a channel, of the difference, in dB, between the far-end crosstalk loss and the insertion loss of each disturbing pair

[SOURCE: ISO/IEC 11801:2002/AMD1:2008, 3.1.70]