Data record `std.tia-526-7-a.definition.optical-return-loss`

Verified 2026-10-25 Confidence: High

Clause 3.1.7 of ANSI/TIA-526-7-A (2015) defines optical return loss as the ratio of the power sent into the cabling to the power coming back from it, expressed in decibels as a positive number.

Provenance. Where this record comes from and where it is used: the cited source, the record itself and the entry that cites it.

Provenance: the chain from source to entry.
Step	Item	Detail
Source	ANSI/TIA-526-7-A	Licensed standard, clause 3.1.7
Data record	std.tia-526-7-a.definition.optical-return-loss	Verified 2026-10-25
Entry	ANSI/TIA-526-7-A	No revisions

Subject: ANSI/TIA-526-7-A (Standards)
Kind: Definition
Source: ANSI/TIA-526-7-A, 2015 edition, clause 3.1.7, Measurement of Optical Power Loss of Installed Single-Mode Fiber Cable Plant, Adoption of IEC 61280-4-2 edition 2: Fibre-Optic Communications Subsystem Test Procedures, Part 4-2: Installed Cable Plant, Single-Mode Attenuation and Optical Return Loss Measurement, TIA.

History

Every recorded change to this data record, oldest first.
Date	Change
2026-10-25	created
2026-10-25	review_status unreviewed -> software_reviewed

Cite this page

Cite the governing standard for the fact itself; cite this page as the finding aid.

"Data record std.tia-526-7-a.definition.optical-return-loss." Fiber Optic Reference. 2026-10-25. https://www.fiberopticreference.com/data/std.tia-526-7-a.definition.optical-return-loss/.

Fiber Optic Reference, Data record std.tia-526-7-a.definition.optical-return-loss (Oct. 25, 2026), https://www.fiberopticreference.com/data/std.tia-526-7-a.definition.optical-return-loss/.

@misc{etr-data-std-tia-526-7-a-definition-optical-return-loss,
  title = {Data record std.tia-526-7-a.definition.optical-return-loss},
  howpublished = {\url{https://www.fiberopticreference.com/data/std.tia-526-7-a.definition.optical-return-loss/}},
  organization = {Fiber Optic Reference},
  publisher = {Fiber Optic Reference},
  year = {2026},
  note = {last substantive change 2026-10-25}
}

{{cite web |title=Data record std.tia-526-7-a.definition.optical-return-loss |website=Fiber Optic Reference |publisher=Fiber Optic Reference |url=https://www.fiberopticreference.com/data/std.tia-526-7-a.definition.optical-return-loss/ |date=2026-10-25 |access-date=}}