A Tutorial on Centralized Optical Fiber Cabling Networks Part IV

Part IVA Tutorial on Centralized Optical FiberCabling Networksby Douglas E. Harshbarger and George H. Sellardhe centralized optical fiber A continuity test can be per- In a more sophisticated test, annetwork design consolidates formed on multimode fibers with a optical time domain reflectometerT all network electronics in a flashlight, a walkie-talkie set and (OTDR) measures and documentssingle main cross-connect (MC) and two people. No tone generator or discretely all points of loss along aprovides direct connections amplifiers are necessary. Just select cabling link.between the MC and workstations. the color-coded fiber to be tested, Attenuation testing after installa-FIBERWhen compared with convention- darken the area,and shine the flash- tion ensures the network cablingOPTICSal, decentralized premises data net- light at the end of the fiber. Confir- meets established attenuation spec-works, this design minimizes mation from a partner, in a ifications and link loss power bud-significantly the number of darkened area at the other end of gets. Documenting the test resultstelecommunications closets (TCs), the fiber, indicates link continuity. provides an invaluable as-builtconnectors and splices needed. Attenuation testing is nearly as sim- record of the system, useful for anyConsequently, the centralized opti- ple. (Note: To protect your eye- subsequent troubleshooting orcal fiber design greatly simplifies sight, do not look directly into the ...