摘要:
An electromagnetic wave measurement system includes an electromagnetic wave emitting unit, measurement condition changing unit for changing a measurement condition, a control unit controlling the electromagnetic wave emitting unit and the measurement condition changing unit based on actual measurement data of the object electronic circuit, which data has previously been measured under a predetermined measurement condition, and measurement condition data of the predetermined measurement condition in such a manner that electromagnetic waves resembling those of the object electronic circuit is emitted from the electromagnetic wave emitting unit under the same condition as the predetermined measurement condition. With this system, since the electromagnetic wave emitting unit emits electromagnetic waves exactly resembling those of electronic circuits constitute an electronic device, it is possible to perform the electromagnetic wave measurement as if all the electronic circuits are collected even when all the electronic circuits are not collected.
摘要:
This application discloses a frame unit for communication and other electronic devices including a pair of parallel side plates interconnected by upper and lower guide rails extending between and perpendicular to the side plates, and a plurality of guide members which are secured to the guide rails and which are adapted to guide therealong printed boards on which circuit elements of an electronic device are provided. The application also discloses a frame device composed of a number of such frame units.
摘要:
Electronic communication device shelf units for packing therein printed circuit boards wherein the shelf units are to be put one upon another in a cabinet, wherein each said shelf unit comprises hollow side plates provided with air inlet openings on their outer faces, and a top plate which is connected to the side plates and having a V-shaped heat diffusion plate defining thereon an air introduction space; the side plates are provided, on their inner faces, with openings communicating with the air introduction space, such that hot air diffusion for each shelf unit is independent of the other shelf units.
摘要:
An electronic device is composed of a reflector provided so as to cover a plug of a cabinet (sub-rack) into which a plug-in unit is plugged, and reflecting an electromagnetic wave which leaks from the plug; and a cable support supporting a cable connected to the plug-in unit and taken out of the plug, and forming an absorber which absorbs the electromagnetic wave reflected by the reflector.