Tuesday, August 2, 2016

OTDR Ghost




What is OTDR Ghost?

In the change from glass to air, energy reflected back to the OTDR is of such intensity that the light pulse is reflected off of the connector at the OTDR and is again returned a second time. As the OTDR converts the travel time of the light pulse into distance, the reflective event is painted on the screen a second time—thus, a ghost. - Charles Lohrma

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