This document describes the LED Light Monitoring System of the Electromagnetic Barrel Calorimeter (BCAL) of the GlueX detector at Jefferson Lab. The LED Light Monitoring System was developed, manufactured and tested at the National and Kapodistrian University of Athens in collaboration with Symmetron Electronic Applications. This document was produced by Dr Euthymios Kappos for the purposes of system installation and maintenance. Address any enquiries regarding this document to ekappos@otenet.gr or contact www.symmetron.gr.
