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OTDR Education

Today's world relies on fiber optic communications.

From intercontinental optical transmissions to interstate or inter-providence,
an optical fiber transmission must have little loss and be free of breaks.

That’s where OTDRs come in.
They are a vital tool in testing the reliability of today’s optical networks.


What is an OTDR?

Optical Time Domain Reflectometer - also known as an OTDR, is a hardware device used for measurement of the elapsed time and intensity of light reflected on optical fiber.

How it works

The reflectometer can compute the distance to problems on the fiber such as attenuation and breaks, making it a useful tool in optical network troubleshooting.

Learn more about how Agilent OTDR technology works.
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Agilent Model N3900A
Modular Network Tester Mainframe
Shown with optional accessories
Troubleshooting Info
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All content featured on this site used with authorization from the Agilent Optical Transmission Americas Team.