IEC 61935-1-1-2019 PDF

Full title and description

Specification for the testing of balanced and coaxial information technology cabling — Part 1-1: Additional requirements for the measurement of transverse conversion loss (TCL) and equal level transverse conversion transfer loss (ELTCTL). This document provides supplementary reference measurement procedures and field-tester accuracy requirements used to verify TCL and ELTCTL measurements in accordance with ISO/IEC 11801‑1 and related cabling standards.

Abstract

IEC 61935‑1‑1:2019 specifies additional reference measurement procedures for level V field testers and defines requirements for measuring transverse conversion loss and equal level transverse conversion transfer loss, including accuracy and verification methods necessary to meet the requirements of ISO/IEC 11801‑1. It is intended to be used with the main IEC 61935‑1 reference procedures and other applicable IEC cabling and connector documents.

General information

• Status: Current / Published international standard.
• Publication date: 2019 (published September/October 2019).
• Publisher: International Electrotechnical Commission (IEC), TC 46.
• ICS / categories: 33.120.10 (Coaxial cables; waveguides).
• Edition / version: Edition 1.0 (2019).
• Number of pages: Approximately 26 pages (bilingual English/French national editions report 26 pages).

Scope

This part (1‑1) provides additional measurement requirements and reference procedures specifically for transverse conversion loss (TCL) and equal level transverse conversion transfer loss (ELTCTL). It addresses the measurement methods and performance/accuracy requirements for field test instruments (notably level V testers) when assessing TCL and ELTCTL on installed balanced and coaxial cabling as required by ISO/IEC 11801‑1 and related specifications. The document is used alongside IEC 61935‑1 which contains broader reference and field measurement procedures for cabling parameters.

Key topics and requirements

• Definitions and measurement principles for transverse conversion loss (TCL) and equal level transverse conversion transfer loss (ELTCTL).
• Reference measurement procedures for laboratory and field verification of TCL/ELTCTL.
• Accuracy and performance requirements for level V (and other relevant) field testers used to measure TCL and ELTCTL.
• Test setup, calibration and uncertainty considerations relevant to TCL/ELTCTL measurement.
• How the additional procedures integrate with IEC 61935‑1 and the measurement requirements of ISO/IEC 11801‑1.

Typical use and users

Typical users include test and measurement engineers, cabling installers and contractors, certification laboratories, equipment manufacturers (testers, cabling and connector vendors), and compliance managers who must verify installed cabling performance for TCL and ELTCTL. The standard is used when precise field verification of unbalance-to-balance coupling and related immunity/compatibility characteristics is required.

Related standards

IEC 61935‑1‑1:2019 is intended to be used with and referenced by: IEC 61935‑1 (reference and field measurement procedures for installed balanced cabling), ISO/IEC 11801‑1 (generic cabling requirements for customer premises), the IEC 61156 family (cable construction), IEC 60603‑7 family and IEC 61076 series (connectors), and other IEC/ISO cabling/testing documents that define cabling topologies and field test levels.

Keywords

Transverse conversion loss (TCL), ELTCTL, field tester accuracy, level V tester, cabling testing, IEC 61935, ISO/IEC 11801‑1, cable assembly measurement, reference measurement procedures, test uncertainty.

FAQ

Q: What is this standard?

A: IEC 61935‑1‑1:2019 is a technical specification that provides additional measurement requirements and procedures for assessing transverse conversion loss and equal level transverse conversion transfer loss on information technology cabling.

Q: What does it cover?

A: It covers reference and field measurement procedures, instrument performance and accuracy requirements (particularly for level V field testers), test setups, calibration and uncertainty considerations specifically for TCL and ELTCTL measurements.

Q: Who typically uses it?

A: Test and measurement engineers, cabling installers and certifiers, manufacturers of cabling and test equipment, and laboratories involved in cabling verification and compliance testing.

Q: Is it current or superseded?

A: IEC 61935‑1‑1:2019 is the published 2019 edition and is listed as the current published document (no newer international replacement published as of the document publication and current listings). National adoptions and translations exist; users should verify national status with their national committee for the latest confirmation.

Q: Is it part of a series?

A: Yes — it is a subpart of the IEC 61935 series. It supplements IEC 61935‑1 (installed balanced cabling reference/field procedures) and is related to other parts in the 61935 series (for cords, assemblies and related test procedures).

Q: What are the key keywords?

A: TCL, ELTCTL, field tester, level V, cabling testing, reference measurement, ISO/IEC 11801‑1.