International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference EN 61280-2-9:2009
Title Fibre optic communication subsystem test procedures - Part 2-9: Digital systems - Optical signal-to-noise ratio measurement for dense wavelength-division multiplexed systems
Project Number 21827
Abstract/Scope IEC 61280-2-9:2009 provides a parameter definition and a test method for obtaining optical signal-to-noise ratio (OSNR) using apparatus that measures the optical spectrum at a multichannel interface. Because noise measurement is made on an optical spectrum analyzer, the measured noise does not include source relative intensity noise (RIN) or receiver noise. Three implementations for an optical spectrum analyser (OSA) are discussed: - a diffraction-grating-based OSA, - a Michelson interferometer-based OSA, - and a Fabry-Perot-based OSA. This second addition cancels and replaces the first edition published in 2002 and constitutes a technical revision. The main changes from the previous edition are as follows: - A paragraph has been added to the Scope describing the limitations due to signal spectral width and wavelength filtering; - and Annex B has been added to further explain error in measuring noise level due to signal spectral width and wavelength filtering.


Current Stage code 6060
Current Stage code date 2009-04-22
Current Stage code deadline 2010-01-01
Deadline date for vote  


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IEC Technical Body IEC/SC 86C
Reference Document IEC 61280-2-9:2009 (EQV)
ICS 33.180.20 - Fibre optic interconnecting devices
Keywords Fibre; Optic; Communication; Digital; Noise ratio
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2009-04-22 2010-01-01 export to doc file  EN  FR  DE
5099 2009-04-01 2009-06-01  
5061 2009-02-24 2009-04-01  
5060 2008-09-12 2008-12-31 export to doc file  EN
5020 2008-03-28 2008-09-05  
1090 2008-03-26 2008-03-28  

Implementation Dates

date of Ratification (DOR) (1) 2009-04-01
date of Availability (DAV) (2) 2009-04-22
date of Announcement (DOA) (3) 2009-07-01
date of Publication (DOP) (4) 2010-01-01
date of Withdrawal (DOW) (5) 2012-04-01


Supersedes EN 61280-2-9:2002
Superseded by  
Normative reference (6) EN 61290-3-1:2003
EN 62129:2006
corr. December 2006

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.