IEC 62343-3-1:2016(E) provides a performance specification template for the dynamic channel equalizer (DCE). The object of this performance specification template is to provide a framework for the preparation of detail specifications on the product or performance of dynamic channel equalizers. Additional specification parameters may be included for product specifications or performance specifications. However, specification parameters specified in this standard should not be removed from the product specifications or performance specifications. Technical information regarding dynamic channel equalizers and their applications in DWDM systems is described in IEC TR 62343-6-1. This second edition cancels and replaces the first edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical change with respect to the previous edition: modification of terms and definitions and references. Keywords: dynamic channel equalizer (DCE)