This part of IEC 61753 defines C/3 minimum initial test and measurement requirements and
severities which a single-mode connector/cable assembly must satisfy in order to be
categorized as meeting the IEC standard category C (controlled environment), as defined in
Clause A.2 of IEC 61753-1.
IEC 61753-021-2:2007 history
2007IEC 61753-021-2:2007 Fibre optic interconnecting devices and passive components performance standard - Part 021-2: Grade C/3 single-mode fibre optic connectors for category C - Controlled environment
2002IEC 61753-021-2:2002 Fibre optic interconnecting devices and passive component performance standard - Part 021-2: Fibre optic connectors terminated on single-mode fibre for category C; Controlled environment