Electronic circuit pack and shelf and electronic circuit pack combinations

摘要

An electronic circuit pack having a printed circuit board with a faceplate at a front of the board. The faceplate has two end regions carrying latches for holding the board into a shelf. A front wall of the faceplate has an intermediate part between the end regions, the intermediate part extending forwardly of the end regions and lying at least between the latches. Preferably, the intermediate part of the front wall extends as far as a frontal vertical plane of the shelf which is the foremost position allowable for a shelf and a circuit board combination. The intermediate part of the front wall lying in this forward position provides additional space behind it for extending the electronic circuitry of the circuit pack for a unitary shelf size. This additional space is occupied by the printed circuit board with conductors and electronic components and/or connectors for test purposes and memory cards. <IMAGE>