Abstract: The application provides a downlight emergency power supply device, including an emergency power box having an accommodation cavity; a connection structure configured to fix a luminaire to the emergency power box, and comprising two clamping assemblies arranged oppositely, wherein the clamping assemblies are elastically connected to an outer side of the emergency power box; and a power supply assembly, fixed in the accommodation cavity, and configured to supply power to the luminaire; wherein the two clamping assemblies clamp and fix the luminaire in an inward or outward rebound state. By setting two clamping assemblies to clamp and fix the luminaire on the emergency power supply, it is simpler and less time-consuming to assemble than the screw mounting method used in the related art, without the need for manual screwing. Besides, the two clamping assemblies of the connection structure can be automatically clamped, achieving semi-automatic assembly, which is convenient and efficient.

Abstract: A tunable chromatic dispersion compensation device used to compensate chromatic dispersion of wavelength of at least one predetermined wavelength band of light signal is provided. The tunable chromatic dispersion compensation device comprises a chromatic dispersion compensator, and a controller. The chromatic dispersion compensator comprises at least a first chromatic dispersion compensation unit and a second chromatic dispersion compensation unit connected with the first chromatic dispersion compensation unit in series. The first chromatic dispersion compensation unit has a free spectral range, the second chromatic dispersion compensation unit has a free spectral range same as to that of the first chromatic dispersion compensation unit. Each chromatic dispersion compensation unit comprises an interference cavity. The controller comprises an inputting unit being configured for inputting a predetermined chromatic dispersion compensation information.

Abstract: A tunable chromatic dispersion compensation device used to compensate chromatic dispersion of wavelength of at least one predetermined wavelength band of light signal is provided. The tunable chromatic dispersion compensation device comprises a chromatic dispersion compensator, and a controller. The chromatic dispersion compensator comprises at least a first chromatic dispersion compensation unit and a second chromatic dispersion compensation unit connected with the first chromatic dispersion compensation unit in series. The first chromatic dispersion compensation unit has a free spectral range, the second chromatic dispersion compensation unit has a free spectral range same as to that of the first chromatic dispersion compensation unit. Each chromatic dispersion compensation unit comprises an interference cavity. The controller comprises an inputting unit being configured for inputting a predetermined chromatic dispersion compensation information.

Abstract: A method for configuration of a control system for an electrical switchgear assembly uses a primary device model for representation of primary devices, and a topology model of the switchgear assembly. In order to configure a first control system function, the first control system function is allocated to a primary device and to a field device, after which the primary device model and the topology model are used to automatically determine second control system functions which the first control system function requires during operation.

Abstract: A method for configuration of a control system for an electrical switchgear assembly uses a primary device model for representation of primary devices, and a topology model of the switchgear assembly. In order to configure a first control system function, the first control system function is allocated to a primary device and to a field device, after which the primary device model and the topology model are used to automatically determine second control system functions which the first control system function requires during operation.