The Difference Between OTDR and Optical Power Meteradmin
OTDR can measure the length of the fiber break point, the optical power meter can only test the received optical power!
OTDR is shining, so that can measure the distance between the fiber break point and test point. Optical power meter can only received light and optical power to determine if the fiber is cut.
Optical power meter can test the received optical power, and by contrasting with the light-emitting power can obtain the wastage. If you do not receive the optical, it means the fiber is cut.
OTDR can also test wastage, but it is less accurate than optical power meter. OTDR can also test the location of the break point.
The using process of OTDR is to focus on the full line wastage, the joint position, joint distance, etc., can also be used for fiber, while with a built-in optical power module and a light source. Optical power meter, basically to see how much the cable wastage is to give you a specific number. And basically a fixed value, more to check the barrier.