IEC 61935-1-2:2018

Specification for the testing of balanced and coaxial information technology cabling - Part 1-2: Installed balanced cabling as specified in ISO/IEC 11801 - Additional requirements for measurement of resistance unbalance with field test instrumentation

IEC 61935-1-2:2018 specifies additional reference measurement procedures for measurement of resistance unbalance with field test instrumentation, and the requirements for field tester accuracy to measure resistance unbalance according to the requirements of ISO/IEC 11801-1.

Spécification relative aux essais des câblages symétriques et coaxiaux des technologies de l’information - Partie 1-2: Câblages symétriques installés tels que spécifiés dans l’ISO/IEC 11801 – Exigences supplémentaires pour le mesurage de l’asymétrie

l’IEC 61935-1-2:2018 spécifie les procédures de mesure de référence supplémentaires pour le mesurage de l’asymétrie de résistance avec des instruments d’essai sur site et les exigences relatives à l’exactitude des contrôleurs sur site pour mesurer l’asymétrie de résistance conformément aux exigences de l'ISO/IEC 11801-1.

General Information

• Status: Published
• Publication Date: 13-Dec-2018
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.120.10 - Coaxial cables. Waveguides
• Technical Committee: TC 46 - Cables, wires, waveguides, RF connectors, RF and microwave passive components and accessories
• Drafting Committee: WG 9 - TC 46/WG 9
• Current Stage: PPUB - Publication issued
• Start Date: 19-Oct-2018
• Completion Date: 14-Dec-2018

Standards Content (Sample)

IEC 61935-1-2 ®
Edition 1.0 2018-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Specification for the testing of balanced and coaxial information technology
cabling –
Part 1-2: Installed balanced cabling as specified in ISO/IEC 11801 – Additional
requirements for measurement of resistance unbalance with field test
instrumentation
Spécification relative aux essais des câblages symétriques et coaxiaux des
technologies de l’information –
Partie 1-2: Câblages symétriques installés tels que spécifiés dans
l’ISO/IEC 11801 – Exigences supplémentaires pour le mesurage de l’asymétrie

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IEC 61935-1-2 ®
Edition 1.0 2018-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Specification for the testing of balanced and coaxial information technology

cabling –
Part 1-2: Installed balanced cabling as specified in ISO/IEC 11801 – Additional

requirements for measurement of resistance unbalance with field test

instrumentation
Spécification relative aux essais des câblages symétriques et coaxiaux des

technologies de l’information –

Partie 1-2: Câblages symétriques installés tels que spécifiés dans

l’ISO/IEC 11801 – Exigences supplémentaires pour le mesurage de l’asymétrie

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.120.10 ISBN 978-2-8322-6168-2

– 2 – IEC 61935-1-2:2018 © IEC 2018
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Reference measurement procedure for resistance unbalance . 5
4.1 Reference measurement procedure for resistance unbalance within a pair. 5
4.2 Reference measurement procedure for resistance unbalance between pairs . 6
4.3 Measurement setup for field measurement of resistance unbalance
parameters . 6
5 Field tester requirements for resistance unbalance measurements . 6
5.1 General . 6
5.2 Data reporting and accuracy . 7
5.2.1 Detailed results . 7
5.2.2 Summary results . 7
6 Field tester accuracy performance requirements for resistance unbalance
measurements . 8
7 Accuracy models . 8
7.1 Error model for DC loop resistance . 8
7.2 Error model for resistance unbalance . 9
7.3 Comparison to reference measurements . 9
7.4 Procedures for determining field tester parameters . 9
7.4.1 General . 9
7.4.2 Constant error term of DC loop resistance for loop resistance
measurements . 9
7.4.3 Error term proportional to the DC loop resistance for loop resistance
measurements . 9
7.4.4 Constant error term of resistance unbalance for resistance unbalance
measurements . 9
7.4.5 Error term proportional to the DC loop resistance for resistance
unbalance measurements . 10

Figure 1 – Measurement setup . 6

Table 1 – Additional field test requirements for resistance unbalance measurements . 7
Table 2 – Field tester summary reporting requirements for resistance unbalance
measurements . 8
Table 3 – Accuracy requirements for resistance unbalance measurements . 8

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATION FOR THE TESTING OF BALANCED AND COAXIAL
INFORMATION TECHNOLOGY CABLING –

Part 1-2: Installed balanced cabling as specified in ISO/IEC 11801 –
Additional requirements for measurement of resistance unbalance
with field test instrumentation

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International Standard IEC 61935-1-2 has been prepared by IEC technical committee TC 46:
Cable
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