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3 Event - define Events settings and Pass/ Fail Settings. 4 Job Settings - define Job, End Locations, and Operator parameters. Press tabs to display test data as follows: Event Type Definition Possible Cause OTDR Port The tester’s OTDR port connector. The tester identifies the OTDR port connection and grades its quality, as shown on the OTDR details screens.

Figure 8. The OTDR pulse length limits its resolution . There is a tool that will help here. It is called a "visual fault locator". This "Trick" Can Help. There is a trick you can try if you are desperate. The reflection at an event that causes overloading the OTDR receiver can be tamed by using "index matching fluid" to reduce the effect that causes the reflection.

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4 Job Settings - define Job, End Locations, and Operator parameters. Press tabs to display test data as follows: The OTDR measures distance and loss at an event - a connector or splice - between the two markers but calculates the best fit line between the two points using the "least squares" method to reduce noise. By NATE BROWN, FIS -- Optical Time Domain Reflectometers (OTDRs) are a valuable tool for measuring the performance of optical cables.

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The OTDR may even indicate a negative splice loss. Se hela listan på viavisolutions.com Identifies each event on the network and obtains straightforward fiber link status via Optical Link View Provides prompt diagnosis enabling network issues to be fixed quickly and efficiently Generates OTDR trace files (.sor) OTDR Pulse Width Attenuation dead zone The minimum distance needed after a reflective event in order to perform a loss measurement. It is the distance between: Beginning of event Point on trailing edge where receiver detects +0.5 dB from normal backscatter level -2.00-4.00-6.00-8.00-10.00 100.00 110.00 120.00 130.00 140.00 150.00 160.00 dB 2020-08-17 · What Does Optical Time Domain Reflectometer (OTDR) Mean?

Event Dead Zone Distance Range specifies the distance that the OTDR will display on the X axis events include ghosts, gainers, hidden, and unplanned loss events. Figure 2 shows examples of events on an OTDR trace. An expert fiber technician can usually identify these types of events on a trace without the help of an automatic event analyzer and event table that many OTDRs now possess.
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The OTDR pinpoints these irregu-larities in the fiber, measures the distance to them, the attenu- An OTDR event table. Setting up the OTDR with desired preset test conditions for maximum attenuation and reflection values will easily identify only those fibers that do not meet either component or span values and show pass/fail notations.

OTDR.
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Non-Reflective Event. Gain Spice. Sometimes when two fibers are spliced together, the backscatter level at the splice point shifts up instead of down.

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They are often used to create a "picture" of a fiber optic cable when it is first installed so later comparisons can be made to help with troubleshooting network problems. Figure 1. Non-Reflective Event. Gain Spice.