The most reliable way to convert these files is to use the free post-processing software provided by the manufacturer of the OTDR used to take the measurement. These tools offer the best formatting for event tables and trace graphs. EXFO FastReporter / Fiber Insight:
Adds charts, maps, and "Pass/Fail" status to reports. To help you find the best tool, let me know: What brand of OTDR was used? (EXFO, VIAVI, Anritsu, etc.) Do you need to convert one file or hundreds at once ? Do you need Pass/Fail analysis included in the PDF? Otdr Sor File To Pdf Converter
If you don't want to install heavy software, several web-based tools can generate a PDF report instantly. Info-OTDR / Cloud-based Viewers: Websites like OTDRGraph.com The most reliable way to convert these files