BS EN 60793-2-20:2016

What is BS EN 60793-2-20- A2 multimode fibres about? 

BS EN 60793-2-20 is a safety standard on optical fibres. 

BS EN 60793-2-20 is applicable to sub-categories A2a, A2b, and A2c. These fibres are used or can be incorporated in information transmission equipment and optical fibre cables (typically up to 2 km). 

Three types of requirements apply to these fibres: 

• General requirements as defined in IEC 60793-2 
• Specific requirements common to the category A2 multimodal fibres covered in this standard and which are given in Clause 3 
• Requirements applicable to individual sub-categories or specific applications, which are defined in the normative family specification annexes 

Who is BS EN 60793-2-20- A2 multimode fibres for?  

BS EN 60793-2-20 on sectional specification for category A2 multimode fibres is relevant to: 

• Optical fibre technicians 
• Suppliers of optical fibre 
• Testing authorities 

Why should you use BS EN 60793-2-20- A2 multimode fibres? 

An optical fibre is a cylindrical dielectric waveguide that transmits light along its axis through the process of total internal reflection.  

BS EN 60793-2-20 provides relevant mechanical, dimensional attributes, transmission attributes and test methods, measurement methods for A2b fibres. BS EN 60793-2-20 also provides relevant environmental attributes and test methods. These tests are normally conducted periodically as type-tests for a fibre design. Unless otherwise indicated, the recovery period allowed between the completion of the environmental exposure and measuring the attributes are stated in the environmental test method. 

Overall, BS EN 60793-2-20 is useful as it aids on the product specifications for category A2 multimode fibres which can be helpful for your business. 

What’s changed since the last update? 

BS EN 60793-2-20:2016 supersedes BS EN 60793-2-20:2009 which is withdrawn. 

BS EN 60793-2-20:2016 replaces the second edition, published in 2007. BS EN 60793-2-20:2016 constitutes a technical revision. 

BS EN 60793-2-20:2016 includes the following significant technical changes with respect to the previous edition: 

• Nath has been replaced by NAff 
• Specified test specimen length and measurement details for core diameter and NAff measurements