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Homepage>BS Standards>33 TELECOMMUNICATIONS. AUDIO AND VIDEO ENGINEERING>33.180 Fibre optic communications>BS EN IEC 61280-4-3:2022 Fibre optic communication subsystem test procedures Installed passive optical networks. Attenuation and optical return loss measurements
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immediate downloadReleased: 2022-10-31
BS EN IEC 61280-4-3:2022 Fibre optic communication subsystem test procedures Installed passive optical networks. Attenuation and optical return loss measurements

BS EN IEC 61280-4-3:2022

Fibre optic communication subsystem test procedures Installed passive optical networks. Attenuation and optical return loss measurements

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Standard number:BS EN IEC 61280-4-3:2022
Pages:64
Released:2022-10-31
ISBN:978 0 580 51318 3
Status:Standard
DESCRIPTION

BS EN IEC 61280-4-3:2022


This standard BS EN IEC 61280-4-3:2022 Fibre optic communication subsystem test procedures is classified in these ICS categories:
  • 33.180 Fibre optic communications
  • 33.180.01 Fibre optic systems in general
IEC 61280-4-3: 2022 describes the measurement of attenuation, optical return loss and optical power in installed passive optical networks (PONs) using single-mode fibre. This document specifies two methods for measuring the attenuation before activation of the PON:
  • method A: one-cord method using a light source and a power meter (LSPM);
  • method B: optical time-domain reflectometer (OTDR) method in upstream direction only, with reduction of uncertainties due to the variation of backscatter coefficient.
In addition, method C, which is described in informative Annex C, provides an estimate of the attenuation after partial activation of the PON by using a U band filtered optical time-domain reflectometer (FOTDR) in an upstream direction. This publication contains an attached file titled "Supplemental Data" in the form of an Excel spread sheet. This file is intended to be used as a complement and does not form an integral part of the standard.
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