.SOR File Info & Viewer

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.SOR files online

Need to read a fiber optic trace? View your .SOR test data files here for free.

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Standard OTDR Record Files & more
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Extension
.SOR
Category
Data
Primary Use
Standard OTDR Record Storage
Primary Software

EXFO FastReporter

What is a SOR file?

The .SOR file extension stands for Standard OTDR Record File. This file format stores optical fiber test data. Engineers use an Optical Time Domain Reflectometer (OTDR) to test fiber optic cables. The OTDR device saves the test results as a .SOR file. The Telcordia SR-4731 standard defines the structure of this file format.

How to open SOR files?

You can open .SOR files using specialized software from OTDR manufacturers. Common programs include EXFO FastReporter and VIAVI FiberTrace. These desktop applications let you view the trace graphs, measure splice losses, and read event tables.

Analyze SOR files online

If you do not have OTDR software installed, viewer.online/sor can analyze .SOR files to identify the exact format and creator software. It allows you to inspect the file structure, extract readable text metadata, and check whether an online preview is available.

Convert and share OTDR data

You often need to share OTDR results with people who cannot open .SOR files natively. We recommend using convert.guru to convert your .SOR files into readable target formats like .PDF or .CSV.

Summary

viewer.online/sor is highly useful for identifying, inspecting, and understanding .SOR files without installing software or dealing with compatibility problems.

Frequently Asked Questions

What does SOR stand for?

SOR stands for Standard OTDR Record. It is the standard file format for saving fiber optic test traces.

Can I open a .SOR file without an OTDR machine?

Yes, you can open a .SOR file on your computer using desktop software like EXFO FastReporter or a free online tool like viewer.online/sor.

How do I read fiber optic test data from a .SOR file?

Use a dedicated viewer. A viewer application will display a graph showing light reflection over distance. It will also show an event table listing splices, connectors, and cable faults.

Why does my computer not recognize the .SOR file?

Windows and macOS do not support .SOR files natively. You must install specialized fiber testing software or use an online viewer to read the test data.

Can I convert a .SOR file to PDF?

Yes, conversion is possible. Most OTDR software allows you to export test reports to .PDF. You can also use online conversion tools like convert.guru to create a PDF report.

What is the Telcordia SR-4731 standard?

It is a universal data format standard. Telcordia created the SR-4731 standard so that OTDR files from different manufacturers, like EXFO and VIAVI, can be read by a single program.

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