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The use of modern fiber optic test equipment can be used to help phone companies keep their networks operating without interference,sac longchamp pliage. When a long distance telephone line goes down, it’s not the type of publicity phone companies revel in,converse all star. Fiber optical technology continues to grow to ensure the dependability of phone companies to all their customers,sac longchamp pas cher. In addition to the underlying stability and dependability of these networks, fiber optical measurement tools play a large role in keeping these networks operating smoothly,converse pas cher femme.

During installation,longchamp, commissioning and maintenance, fiber optic cables,sac longchamp, connectors and splices are routinely tested for flaws. These tests are done by using specialized test equipment such as fiber optic power meters,converse pas cher, optical time domain reflectometers (OTDR),longchamp pas cher 46141
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During installation and maintenance,chaussures converse pas cher, it is important to view the continuity of the fiber optic link,longchamp pas cher. This procedure can only be done by using the OTDR. An OTDR consists of a pulsed optical transmitter,sac longchamp pas cher, an optical coupler and a photo diode-based receiver,sac longchamp, signal-processing circuitry and display screen,sac longchamp. By using the connectors and the adapters,converse pas cher, the OTDR is connected to one end of an fiber optic cable. Its transmitter sends short-duration pulses along the cable that are back scattered by imperfections of the fiber optic itself (Raleigh scattering),converse all star, or reflected from splices,converse pas cher, connectors,sac longchamp pas cher, breaks and fiber end (Fresnel reflections).

The returned pulses are oriented through the fiber optic coupler to the receiver, where it measures the levels and the traveling time of the returned pulses,converse all star. Loss and reflection values are shown on a display versus the location of these events,sac longchamp, calculated with the traveling time and speed of light inside the fiber core,converse pas cher 98719
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Depending on the power level of the transmitter and the pulse width,longchamp pas cher, OTDR’s can reach distances of 50 km to 200km,longchamp pas cher. Longer pulses,sac longchamp pas cher, due to their higher energy level,converse all star, are used to cover long-haul applications. Higher resolution, as necessary in short-haul applications,chaussure converse all star, can only be achieved by shorter pulse widths,longchamp. The measurement resolution describes how far apart two faults can occur and still be accurately measured.

An OTDR is often used by phone companies to isolate breaks or faults within their operation, such as in areas of extreme signal loss within a cable,longchamp pas cher. Resolving a break to within a meter or less narrows down the section of cable that must be replaced,longchamp pas cher, saving expense and time for the service crew,sacs longchamp 2013. As the OTDR also enables the measurement of the overall length of the fiber optic link,converse pas cher, it’s results are often used as a base for the expense calculation of the installation company,converse pas cher.

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