A device for indicating the connected-in-place condition of a removable subassembly in a rack-mounting arrangement

摘要

In a device for indicating the connected-in-place condition of a physically removable subassembly (7, 8) having connections intended to mate and disengage with and from fixed connections in a rack-mounting arrangement (1) in response to corresponding translational movements, use is made of light whose source (2) is in the rack (1). Light propagation in an optical fiber (4') disposed in the subassembly (7, 8) and terminating on a visible side thereof is used to provide a visual indication.;Another optical fiber (4, 5, 6) may extend from the light source (2) in the rack (1) to the subassembly (7, 8). The fiber end facing the subassembly is then connected to that end of the fiber in the subassembly (7, 8) facing the rack (1) by means of a fiber optic connector (10, 27) consisting of two halves (10', 11). The connector (10, 27) contains a flexible, slit diaphragm (31) which is penetrated by the end of a fiber (4') when the connector halves are fully mated.