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Measuring ORL (Optical Return Loss) and Reflectance is actually very simple with the right OTDR. This technical note - "ORL and Reflectance Measurement" - provides a description of the parameters to be measured plus a simplified step by step measurement procedure using Exfo's FTB-400 and it's Toolbox Software. Right Click This Link and choose "Save As" or "Save Target As" to download this PDF file. You will need Adobe Acrobat Reader (free) to open it.
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