The pulse width to be adjusted according to test distance. Normally, within 10 km the pulse width can be set to 10ns or 30ns to realize effective data collection, if the fiber quality severely down, larger pulse width to be adopted for measurementAll OTDRs regardless of brand have four basic setup requirement i. A shorter pulse, like 5 nanoseconds (ns), gives you fantastic resolution and smaller dead zones, allowing you to distinguish events that are very close together. This is perfect for. The Optical Time Domain Reflectometer (OTDR) is useful for testing the integrity of fiber optic cables. It can verify splice loss, measure length and find faults. Later, comparisons can be made. Manual OTDR mode lets you optimize the OTDR trace for viewing specific events. Tip: To see the settings used for an OTDR test. How to set the key instrument OTDR is the vital to the optical cable line maintenance. ), the test wavelength generally follows the principle of corresponding to the system. How to use OTDR? Expert in access network, PON, GPON, etc.
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