ISO/IEC TS 11801-9903:2021

Information technology - Generic cabling for customer premises - Part 9903: Matrix modelling of channels and links

ISO/IEC 11801-9903:2021 establishes a matrix-model for formulating limits for mixed mode parameters within and between two pairs of balanced cabling. This is for the purpose of supporting new, improved balanced cabling channel and link specifications.

General Information

• Status: Published
• Publication Date: 16-Mar-2021
• ICS: 35.200 - Interface and interconnection equipment
• Technical Committee: ISO/IEC JTC 1/SC 25 - Interconnection of information technology equipment
• Drafting Committee: WG 3 - ISO/IEC JTC 1/SC 25/WG 3
• Current Stage: PPUB - Publication issued
• Start Date: 24-Mar-2021
• Completion Date: 17-Mar-2021

Relations

• Revises: ISO/IEC TR 11801-9903:2015 - Information technology - Generic cabling systems for customer premises - Part 9903: Matrix modelling of channels and links
• Effective Date: 05-Sep-2023

Standards Content (Sample)

ISO/IEC TS 11801-9903
Edition 1.0 2021-03
TECHNICAL
SPECIFICATION
colour
inside
Information technology – Generic cabling systems for customer premises –
Part 9903: Matrix modelling of channels and links

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ISO/IEC TS 11801-9903
Edition 1.0 2021-03
TECHNICAL
SPECIFICATION
colour
inside
Information technology – Generic cabling systems for customer premises –

Part 9903: Matrix modelling of channels and links

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 35.200 ISBN 978-2-8322-9498-7

– 2 – ISO/IEC TS 11801-9903:2021
 ISO/IEC 2021
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 9
2 Normative references . 9
3 Terms, definitions and abbreviated terms . 9
3.1 Terms and definitions . 9
3.2 Symbols and abbreviated terms . 10
4 Matrix model . 11
5 Matrix definition . 11
5.1 General . 11
5.2 Quadriports . 11
5.3 Matrix port definition for a two-pair system representative for modelling
purposes . 11
5.4 Operational scattering matrix . 12
5.5 General naming convention. 12
5.6 S-matrix . 13
5.7 Passivity . 13
5.8 Operational reflection loss matrix . 14
5.9 Transmission matrix (T-matrix) . 14
5.10 S-matrix of cabling . 14
6 Calculation with matrices using limit lines . 15
7 Extracting limit lines . 15
8 General case using mixed-mode matrices. 16
8.1 General . 16
8.2 M-parameters . 16
9 Submatrix DD . 17
9.1 General . 17
9.2 Equations to extract the cabling limit lines . 17
9.2.1 General . 17
9.2.2 Operational attenuation . 17
9.2.3 Near-end crosstalk . 17
9.2.4 Attenuation to far-end crosstalk ratio . 17
9.2.5 Reflection (RL) . 18
10 Component values to be used as input to the model . 18
10.1 General . 18
10.2 Cable . 19
10.2.1 General . 19
10.2.2 Wave attenuation . 19
10.2.3 Near-end crosstalk . 19
10.2.4 Far-end crosstalk . 19
10.2.5 Reflection . 20
10.3 Connections . 21
10.3.1 General . 21
10.3.2 As a point source of disturbance . 21
10.3.3 As a transmission line . 21
11 Submatrices CC, CD and DC . 22

 ISO/IEC 2021
11.1 General . 22
11.2 Submatrix CD . 22
11.3 Submatrix DC . 22
11.4 Submatrix CC . 22
Annex A (informative) Matrix conversion formulas . 23
A.1 Overview. 23
A.2 Formulas. 23
A.2.1 Mixed-mode to T-matrix . 23
A.2.2 T-matrix to M-matrix . 23
A.2.3 Conversion matrices . 23
Annex B (normative) Channel and permanent link models for balanced cabling . 25
B.1 General . 25
B.2 Insertion loss . 25
B.2.1 Insertion loss of the channel configuration . 25
B.2.2 Insertion loss of the permanent link configurations . 26
B.2.3 Assumptions for insertion loss . 26
B.3 NEXT . 27
B.3.1 NEXT of the channel configuration . 27
B.3.2 NEXT of the permanent link configurations . 27
B.3.3 Assumptions for NEXT . 28
B.4 ACR-F . 31
B.4.1 ACR-F of the channel configuration . 31
B.4.2 ACR-F for the permanent link configurations . 31
B.4.3 Assumptions for ACR-F . 32
B.5 No Return loss . 32
B.5.1 Return loss of the channel and permanent link configurations . 32
B.5.2 Assumptions for the return loss circuit analysis method . 33
B.6 PS ANEXT link modelling . 36
B.6.1 General . 36
B.6.2 PS ANEXT between connectors . 36
B.6.3 PS ANEXT between cable segments . 36
B.6.4 Principles of link modelling . 36
B.7 PS AACR-F link modelling . 37
B.7.1 General . 37
B.7.2 PS AFEXT between connectors . 37
B.7.3 PS AACR-F between cable segments . 37
B.7.4 Principles of link modelling . 37
B.7.5 Impact of PS AACR-F in channels and links with substantially different
lengths . 38
B.8 Component assumptions for modelling purposes. 41
Annex C (informative) Terms and definitions . 43
C.1 Comparison of namings . 43
C.2 General . 44
C.3 Background of terms and definitions . 44
C.3.1 Operational attenuation . 44
C.3.2 Operational transfer function (T ) . 46
B
C.3.3 Image or wave transfer function (T) . 46
C.3.4 Insertion transfer function of a two-port (T ) . 46
BI
– 4 – ISO/IEC TS 11801-9903:2021
 ISO/IEC 2021
C.3.5 Insertion transfer function (T ) measured with a vector network
BI
analyser . 46
C.3.6 Operation
...