IEC 60874-1-1:2011 This blank detail specification is not, by itself, a specification. It is part of the generic specification IEC 60874-1, Fibre Optic Interconnecting Devices and Passive Components - Connectors for optical fibres and cables - Part 1: Generic specification. It includes: - a blank worksheet with instructions for preparing detail specifications. This third edition cancels and replaces the second edition published in 2006. It constitutes a technical revision. Specific technical changes since the second edition include to reconsider quality approval and quality conformance inspection and to add the optical interface standard into the detail specification worksheet.