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How to use a Flashlight to Test Multimode Fiber Optic Cable: Quick and Easy Method
Did you know that you can use a flashlight to test a newly installed multimode fiber optic cable? Have one person stand on one end of the fiber, and another person at the other end. Then simply take a LED flashlight and shine light into each of the fiber strands one at a time. If there are no breaks in the fiber, the light will pass easily to the other end.
