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OTDR.

Also written Optical time-domain reflectometer.

What is an OTDR?

An OTDR sends a pulse of light down a fibre and reads the reflections, drawing a map of the whole run: every splice, every connector, every bend, and the distance to each. It is how a fault gets found at a stated metre mark instead of somewhere in two kilometres of duct. Loss testing says whether a link passes; the OTDR says where and why it does not.

OTDR Tester (OFP-100-Q), a OTDR part supplied by Data Systems
OTDR in the catalogue: OTDR Tester (OFP-100-Q), OFP-100-Q. Catalogue illustration.

Published by Data Systems, network material suppliers in Secunderabad, Hyderabad since 1984, which is forty years of experience with these parts. Written from the standards named above. Last checked 2026-08-13. How we check this, and what we got wrong.

Data Systems, a network material supplier in Secunderabad, Hyderabad since 1984 with branches in Vijayawada and Visakhapatnam, supplies OTDR across India through official channels. Send a list, get one quote.

OTDR Tester

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