IEC 61280-4-1:2019/COR1:2020

IEC 61280-4-1:2019/COR1:2020 is a corrigendum to the fibre-optic communication subsystem test procedures covering installed cabling plant and multimode attenuation measurement. As a supporting document to IEC 61280-4-1:2019, it is relevant where engineering teams, laboratories, and compliance groups need to apply the parent test procedure with the correct published corrections. For organizations managing technical review, documented evaluation, or procurement decisions, IEC 61280-4-1:2019/COR1:2020 helps ensure the referenced testing workflow aligns with the intended official text.

Overview of IEC 61280-4-1:2019/COR1:2020

This corrigendum is tied to the installed cabling plant attenuation measurement method for multimode fibre-optic communication subsystems. It does not function as a standalone testing standard, but as a modification reference connected to the parent document. In practice, users rely on it when verifying the exact wording or technical direction used for laboratory evaluation, installation acceptance, or internal compliance checks. The edition and corrected publication date support controlled document management within engineering documentation and quality workflows.

Compliance applications of IEC 61280-4-1:2019/COR1:2020

Organizations may use IEC 61280-4-1:2019/COR1:2020 during conformity assessment preparation, test method review, and validation of fibre-optic cabling measurements in installed environments. It is most relevant for teams responsible for network cabling verification, performance documentation, and technical assessment of multimode attenuation results. Procurement and compliance functions may also reference it when confirming that test documentation and acceptance criteria reflect the corrected parent text, especially where traceable testing workflows are required.

Importance of compliance with IEC 61280-4-1:2019/COR1:2020

Using the corrigendum alongside the parent document helps reduce interpretation errors in attenuation measurement procedures and supports operational consistency across testing sites. That is important for interoperability, quality assurance, and risk reduction when cabling performance data is used in engineering validation or acceptance decisions. For procurement, regulated projects, and conformity assessment, maintaining the corrected reference can improve confidence that technical documentation, test reports, and review records are based on the latest published text.

• Corrigendum linked to the parent fibre-optic cabling test procedure
• Relevant to multimode attenuation measurement in installed cabling plant
• Useful for technical review, laboratory evaluation, and acceptance documentation
• Supports controlled compliance workflows and document accuracy checks