1. Whether there are connector-linked cables on the line and, if so, the loss value caused by that connector connection.
2. Whether there are spliced cables on the line and, if so, the loss value resulting from the splice.
3. Whether there is a "splitter" on the line and, if so, whether the loss falls within specified limits.
4. Whether there is a "macrobend" (bending of the fiber cable in a way that prevents light transmission at desired levels) on the line.
The OTDR evaluates the results above against pre-set pass/fail thresholds and provides a final "pass" or "fail" verdict.
CD/PMD tests are used to determine dispersion values that cannot be measured by an OTDR.
CD (Chromatic Dispersion) is a type of dispersion caused by the different colors (frequencies) of light reaching the destination at different times.
PMD (Polarization Mode Dispersion) is the dispersion experienced by light components traveling in different polarization modes as they pass through a fiber core that deviates from ideal geometry. Since CD/PMD concepts and testing involve complex subject matter that is not widely understood, our experienced team offers a comprehensive training package covering what CD/PMD is, how it is measured, and how to operate the testing equipment.
An OSA (Optical Spectrum Analyzer) is used to measure the properties of light across a specific electromagnetic spectrum.
iFiber offers OTDR, CD/PMD, and OSA devices that provide the best price-performance ratio to meet all your needs.
