A distribution panel differs from a patch panel in that the interconnections on a distribution panel are intended to be permanent, while patch panels are constructed to provide moveable connections that allow the system to be modified. In addition, a device called an attenuator may be needed to reduce the optical power levels into the detector, which can be oversaturated with optical power and thus cause an increase in the bit error rate. Fiber Optic Patch Panels Patch panels are used as Intrabuilding Interconnects or main crossconnects. They provide a central location for patching, testing, monitoring, attenuating and restoring service to fiber optic transmission lines. The patch panel receives the fiber optic patch cords or jumpers from the splice panel or from equipment, and properly routes them to other pieces of equipment.
Patch panels are available with various connector styles.
Wall mount panels are usually used where floor space is limited, and there is no rack-mount equipment. Both mounting styles can usually be ordered with key-locked doors which provide security by limiting user access. The splice panel normally has splice trays to handle either fusion or mechanical splices and appropriate cable handling, routing, storage and grounding requirements. All splice trays should be designed to allow proper bend radius for both singlemode and multimode fibers. Other requirements may include the distribution of cables to various equipment rooms, buildings or cross connects in a site.