OTDR (Optical Time-Domain Reflectometer) is a testing device used to measure the loss and reflectance of optical fibers. The following are the important parameters of an OTDR:
Wavelength: The wavelength of light used to launch into the fiber.
Pulse width: The width of the light pulse sent into the fiber.
Dynamic range: The range of optical loss measurement.
Dead zone: The length of the fiber where events cannot be detected.
Sampling resolution: The distance between measurement points.
Event dead zone: The minimum distance required between two events for them to be detected as separate.
Pulse Repetition Frequency (PRF): The number of pulses per second sent into the fiber.
Spatial resolution: The minimum distance between two events that can be distinguished as separate.
Accuracy: The measurement error of the OTDR.
Connector inspection: The capability to inspect connector end-faces for defects.
These parameters play an important role in determining the performance and accuracy of an OTDR and must be considered while selecting the right OTDR for a particular application.
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