IEC 60869-1 Ed. 3.0 b:1999

Applies to fibre optic attenuators which have all of the following general features: they are passive in that they contain no optoelectronic or other transducing elements; they have two ports for the transmission of optical power, and attenuate the transmitted power in a fixed or variable fashion; the ports are optical fibres or optical fibre connectors. It establishes requirements and procedures for quality assessment.