What is BS EN IEC 61280‑4‑5 about?
BS EN IEC 61280 discusses fibre-optic communication subsystem test procedures. BS EN IEC 61280‑4‑5 is applicable to the measurement of attenuation and determination of polarity and length of installed multimode and single-mode optical fibre cabling plant. These cables are terminated with MPO connectors, using test equipment having an MPO interface.
In BS EN IEC 61280‑4‑5 the optical fibres that are addressed include sub-categories A1-OMx, where x = 2, 3, 4 and 5 (50/125 μm) multimode optical fibres, as specified and category B-652 and B-657 (9/125 μm) single-mode optical fibres.
Note 1: BS EN IEC 61280‑4‑5 does not include descriptions of cabling that is not exclusively MPO to MPO.
Who is BS EN IEC 61280‑4‑5 for?
BS EN IEC 61280‑4‑5 on fibre-optic communication subsystem is useful for:
- Telecommunication companies
- Fibre optic cable and equipment manufacturers
- Computer networking sectors
- Design engineers
Why should you use BS EN IEC 61280‑4‑5?
The fibre-optic communication subsystem helps you to transmit information from one place to another by sending pulses of infrared light through an optical fibre. BS EN IEC 61280‑4‑5 defines the attenuation measurement of MPO terminated fibre optic cabling plant using test equipment with MPO interfaces.
The attenuation measurements of the other multimode and single-mode categories can also be measured using a light source and power meter (LSPM) or optical time-domain reflectometer (OTDR) utilising an internal or external optical switch having one MPO interface.
Multimode measurements as discussed in BS EN IEC 61280‑4‑5 are made with an 850 nm source because transceivers used for parallel optics applications having an MPO interface only operate at 850 nm; 1 300 nm measurements are optional. And the single-mode measurements are made with a 1 310 nm and/or 1 550 nm source because transceivers used for parallel optics applications have an MPO interface operating at these wavelengths.
Using the tests given in BS EN IEC 61280‑4‑5 help you to measure the attenuation and determine the polarity of your multimode and single-mode optical fibres.