IEC 61196-1-209:2016

Coaxial communication cables - Part 1-209: Environmental test methods - Thermal cycling

IEC 61196-1-209:2016(E) specifies a test method to determine the ability of a coaxial cable to withstand the effects of temperature cycling on its transmission performance. The purpose of this procedure is to accelerate the effects of temperature cycling on a cable.

General Information

• Status: Published
• Publication Date: 22-Mar-2016
• ICS: 33.120.10 - Coaxial cables. Waveguides
• Technical Committee: SC 46A - Coaxial cables
• Drafting Committee: WG 3 - TC 46/SC 46A/WG 3
• Current Stage: PPUB - Publication issued
• Start Date: 23-Mar-2016
• Completion Date: 15-May-2016

Overview

IEC 61196-1-209:2016 specifies an environmental test method (thermal cycling) for assessing the ability of coaxial communication cables to withstand repeated temperature changes without unacceptable degradation of transmission performance. The procedure accelerates temperature-cycling effects to reveal potential dielectric, conductor or RF performance failures.

Key topics and requirements

• Scope: Defines a test to determine effects of temperature cycling on cable transmission performance and mechanical integrity.
• Reference test method: Uses the thermal profile in IEC 60068-2-14 with a default transition rate of 2 °C/min and a baseline of 20 cycles (one cycle = exposure at upper and lower limits).
• Sample size: Electrical and mechanical tests are performed on samples of 50 m ± 5 m unless otherwise specified; samples are loosely coiled in the chamber.
• Exposure time: Table-based exposure durations depend on specimen/fixture mass (exposure times range from 0.25 h to 8 h).
• Adjustments and acceleration:
  • Number of cycles is adjusted by transition-rate and temperature-range adjustment factors (formulas in Clauses 5.2). The transition-rate adjustment factor is limited to a maximum of 4.
  • Annex A provides a reliability acceleration factor (A_TC) for modelling accelerated test-to-use equivalence; when unknown, conservative exponents m = 2.5 and n = 1/3 are recommended.
• Measurements and acceptance:
  • Electrical tests (impedance, return loss, passive intermodulation, contact resistance, etc.) and mechanical monitoring (dielectric/conductor movement) are required.
  • Performance criteria and acceptance limits are to be specified in the detailed product specification.
• Test report must record initial/final measurements, sample details, connector type, test conditions (temperatures, rate, cycle count and duration), sample placement and any deviations.

Applications and users

IEC 61196-1-209 is used by:

• Cable manufacturers for qualification and design verification of coaxial cables.
• Independent test laboratories and quality assurance teams conducting environmental and reliability testing.
• System integrators and OEMs (telecom, broadcast, aerospace, defence, industrial RF systems) specifying environmental robustness in procurement and acceptance tests.
• R&D engineers modelling accelerated life testing and temperature-stress effects.

Related standards

• IEC 61196-1 - Generic specification for coaxial communication cables
• IEC 60068-2-14 - Environmental testing: Change of temperature
• IEC 62506 - Methods for product accelerated testing

Keywords: IEC 61196-1-209, thermal cycling, coaxial cables, environmental test methods, temperature cycling, accelerated testing, IEC 60068-2-14, transmission performance, test report.

Standards Content (Sample)

IEC 61196-1-209 ®
Edition 1.0 2016-03
INTERNATIONAL
STANDARD
Coaxial communication cables –
Part 1-209: Environmental test methods – Thermal cycling

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IEC 61196-1-209 ®
Edition 1.0 2016-03
INTERNATIONAL
STANDARD
Coaxial communication cables –

Part 1-209: Environmental test methods – Thermal cycling

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.120.10 ISBN 978-2-8322-3250-7

– 2 – IEC 61196-1-209:2016 © IEC 2016
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references. 5
3 Terms and definitions . 5
4 Symbols . 5
5 Method . 6
5.1 Thermal cycle profile method . 6
5.2 Adjustment factors . 6
5.2.1 General . 6
5.2.2 Transition rate adjustment factor . 7
5.2.3 Upper and lower temperature exposure test adjustment factor . 7
5.3 Sample . 7
5.4 Requirements . 7
6 Test report. 8
Annex A (informative) Reliability acceleration factor . 9

Table 1 – Mass and exposure times . 6

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
COAXIAL COMMUNICATION CABLES –

Part 1-209: Environmental test methods – Thermal cycling

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International Standard IEC 61196-1-209 has been prepared by subcommittee 46A: Coaxial
cables, of IEC technical committee 46: Cables, wires, waveguides, R.F. connectors, R.F. and
microwave passive components and accessories.
The text of this standard is based on the following documents:
FDIS Report on voting
46A/1298/FDIS 46A/1301/RVD
Full information on the voting for the approval of this st
...