What Is High Blood Pressure? Blood pressure is the amount of force exerted by the blood against the walls of the arteries. A person's blood pressure is considered high when the readings are greater than 140 mm Hg systolic (the top number in the blood pressure reading) or 90 mm Hg diastolic (the bottom number).
You are here: Fiber optic light source is a fiber optic test equipment to measure the fiber optic loss for both single mode fiber cable and multimode fiber cables; usually the fiber optic light source is used with the fiber optic power meters.
Optical fibers are not actually a light source-you can't just plug them in and turn them on. What they really are is a conduit that carries light from a remote source, an illuminator, at one end to a predetermined exit point in a counter or panel at the other end.