TIA issues New Practical Considerations for Implementation of Encircled Flux Launch Conditions in the Field Standard

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CONTACT:    Ashley Rook, +1.202.429.4929, AshleyRook@rational360.com
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TIA issues New Practical Considerations for Implementation of Encircled Flux Launch Conditions in the Field Standard

Arlington, VA (August 21, 2013) – The Telecommunications Industry Association, which develops standards for the information and communications technology industry, has released a new document, TSB-4979, Practical Considerations for Implementation of Encircled Flux Launch Conditions in the Field.

TSB-4979 outlines precise specifications that define the launch condition of test sources into multimode fiber which have been standardized and are mandatory for testing optical attenuation of installed multimode cabling per TIA-568. This document describes practical implementation methods for field test equipment to meet these standard encircled flux launch conditions. A purpose is to identify user-friendly, low complexity solutions for implementing multimode launch conditions that meet EF-based requirements. To that end, this document describes two possible implementation methods. The first method can be used with any light source, be it overfilling or underfilling, from any test supplier – considered a “universal controller”. The second method is a light source and launch cord combination (the launch cord could include a controlling device), perhaps from a specific test supplier, that together meet the EF requirements – considered a “matched controller”. This document describes the advantages and disadvantages of each implementation method. This document also provides uncertainty of measurements and best practices advice.

TSB-4979 was formulated under the cognizance of the TIA TR-42 Telecommunications Cabling Systems, TR-42.11 Optical Systems (568)

For more information about TR-42 and how to participate in standards development with TIA, contact Germaine Palangdao at standards@tiaonline.org.

TSB-4979 and all TIA standards may be purchased at http://global.ihs.com.

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About TIA

The Telecommunications Industry Association (TIA) represents manufacturers and suppliers of global communications networks through standards development, policy and advocacy, business opportunities, market intelligence, and events and networking. TIA enhances the business environment for broadband, mobile wireless, information technology, networks, cable, satellite and unified communications. Members' products and services empower communications in every industry and market, including healthcare, education, security, public safety, transportation, government, the military, the environment, and entertainment. Visit tiaonline.org for more details.

TIA is accredited by the American National Standards Institute (ANSI), and is a proud sponsor of ANSI's Standards Boost Business campaign. Visit www.standardsboostbusiness.org for details.

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