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SFS-EN 61280-4-2:en – Fibre-optic communication subsystem test procedures – Part 4-2: Installed cable plant – Single-mode attenuation and optical return loss measurement

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IEC 61280-4-2: 2014 is applicable to the measurement of attenuation and optical return loss of installed optical fibre cable plant using single-mode fibre. This cable plant can include single-mode optical fibres, connectors, adapters, splices and other passive devices. The cabling may be installe ...
https://sales.sfs.fi/julkaisu.html.stx?id=352534

SFS-EN 61280-2-9:en – Fibre optic communication subsystem test procedures – Part 2-9: Digital systems – Optical signal-to-noise ratio measurement for dense wavelength-division multiplexed systems

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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 in ...
https://sales.sfs.fi/julkaisu.html.stx?id=352528

SFS-EN 61280-2-2:en – Fibre optic communication subsystem test procedures – Part 2-2: Digital systems – Optical eye pattern, waveform and extinction ratio measurement

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IEC 61280-2-2:2012(E) describes a test procedure to verify compliance with a predetermined waveform mask and to measure the eye pattern and waveform parameters such as rise time, fall time, modulation amplitude and extinction ratio. This fourth edition cancels and replaces the third edition publi ...
https://sales.sfs.fi/julkaisu.html.stx?id=352521

SFS-EN 61280-2-12:en – Fibre optic communication subsystem test procedures – Part 2-12: Digital systems – Measuring eye diagrams and Q-factor using a software triggering technique for transmission signal quality assessment

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IEC 61280-2-12:2014 defines the procedure for measuring eye diagrams and Q-factor of optical transmission (RZ and NRZ) signals using software triggering technique as shown in 4.1. Keywords: measuring eye diagrams and Q-factor of optical transmission (RZ and NRZ) signals, software triggering techn ...
https://sales.sfs.fi/julkaisu.html.stx?id=352517

SFS-EN 61280-2-11:en – Fibre optic communication subsystem test procedures – Part 2-11: Digital systems – Averaged Q-factor determination using amplitude histogram evaluation for optical signal quality monitoring

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This part of IEC 61280 defines the averaged Q-factor and provides a procedure to measure it by using amplitude histogram parameters such as the standard deviation and average level. The standards writing body responsible for this document in Finland is Electrotechnical Standardization in Finland.
https://sales.sfs.fi/julkaisu.html.stx?id=352515

SFS-EN 61280-2-10:en – Fibre optic communication subsystem test procedures – Part 2-10: Digital systems – Time-resolved chirp and alpha-factor measurement of laser transmitters

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This part of EN 61280 sets forth standard procedures for measuring time-resolved chirp (TRC) on laser transmitters. The calculation of alpha-factor, a measure of transient chirp, is derived from the measured TRC data. Also covered is a means to verify the TRC set-ups and calculations (Annex A) an ...
https://sales.sfs.fi/julkaisu.html.stx?id=352513

SFS-EN 61280-1-1:en – Fibre optic communication subsystem basic test procedures – Part 1-1: Test procedures for general communication subsystems – Transmitter output optical power measurement for single-mode optical fibre cable

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IEC 61280-1-1:2013(E) applies to fibre optic general communication subsystems. The object of this part is to measure the optical power coupled from the output of a transmitter under test into single-mode optical fibre cable containing dispersion-unshifted fibre or dispersion-shifted fibre. This s ...
https://sales.sfs.fi/julkaisu.html.stx?id=352502

SFS-EN 3523 – Aerospace series. Steel FE-PL1505 (15CrMoV6). Air melted. Hardened and tempered. Bar for machining. De = 100 mm. 1 080 MPa = Rm = 1 280 MPa

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This standard specifies the requirements relating to: Steel FE-PL1505 (15CrMoV6) Air melted Hardened and tempered Bar for machining De = 100 mm 1 080 MPa = Rm = 1 280 MPa for aerospace applications. The standards writing body responsible for this document in Finland is Finnish Standards Associ ...
https://sales.sfs.fi/julkaisu.html.stx?id=919485
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