摘要:
A computer enclosure includes a chassis (10), a resilient clip (30), and a cover (50). The chassis defines at least a through hole (16). An outer surface (13) and an inner surface (15) are defined on the chassis. The cover is secured to the chassis. The resilient clip is secured to the inner surface of the chassis. At least a finger (34) is formed on the resilient clip. The finger projects from the through hole and abuts against the cover for shielding EMI. The cover is electrically contacted with the chassis through the resilient clip. Which not only further secures the cover firmly to the chassis but also prevents EMI leaking from the chassis.
摘要:
A fixing apparatus is for fixing a motherboard (60) in a chassis (20). The chassis includes a supporting board (30). The supporting plate includes a number of clips (36, 38), and a screw hole (391). The motherboard (60) defines a number of through holes (62) corresponding to a number of standoff (40) disposed on the supporting plate, a number of apertures (64), and a fixing hole (66). The through holes each include a circular hole (622), and a slot (624). The standoffs each comprise a head (42), a neck (44), and a base (46). The clips each include a shoulder (367, 387), and a catch (366, 386). The standoffs and the clips engage the through hole and the apertures of the supporting plate to attach the motherboard in the chassis. A stud extends through the fixing hole and engages the screw hole to secure the motherboard in the chassis.
摘要:
An optical signal transmitter is disclosed that transmits an optical signal with corresponding Wavelength Division Multiplexing (WDM) channels and Time Division Multiplexing (TDM) channels. The transmitter is comprised of a laser, a dispersion system, and a modulator. The laser generates and transmits a narrow laser pulse comprised of a plurality of wavelength channels. The dispersion system broadens the narrow laser pulse into a wide laser pulse. The modulator modulates the wide laser pulse based on an electric modulation signal comprised of a plurality of time slot channels wherein the time slot channels in the electric modulation signal correspond to the wavelength channels in the wide laser pulse respectively. The modulator transfers a modulated wide laser pulse. Channels of the modulated wide laser pulse are hybrid wavelength and time slot channels. The transmitter singularly transmits a WDM optical signal comprised of multiple wavelength channels. The transmitter also allows a filter to drop time slot channels from a TDM optical signal instead of an expensive demultiplexer.
摘要:
An optical fiber protection switch comprises an optical interface and an optical switching system. The optical interface exchanges optical signals with optical fibers that are deployed in a ring configuration. The optical switching system exchanges the optical signals with the optical interface. The optical switching system performs ring switching of the optical signals in the optical domain in response to a first fault. The optical switching system performs span switching of the optical signals in the optical domain in response to a second fault.
摘要:
A monitor adjusting apparatus include a monitor (10), a base (20) and an adjusting device (30). The adjusting device includes a first pivot assembly (40) connected with the monitor, a second pivot assembly (50) connected with the base, and a connecting assembly (70) mounted between the first pivot assembly and the second pivot assembly. The first pivot assembly generates a friction moment. The monitor generates a first gravity moment opposite to the friction moment. The second pivot assembly generates a twist moment. The monitor and the connecting assembly generate a second gravity moment opposite to the twist moment. The monitor stays at any obliquity under a balance of the friction moment and the first gravity moment, and stays at any height under a balance of the twist moment and the second gravity moment.
摘要:
An optical signal transmitter is disclosed that transmits an optical signal with corresponding Wavelength Division Multiplexing (WDM) channels and Time Division Multiplexing (TDM) channels. The transmitter is comprised of a laser, a dispersion system, and a modulator. The laser generates and transmits a narrow laser pulse comprised of a plurality of wavelength channels. The dispersion system broadens the narrow laser pulse into a wide laser pulse. The modulator modulates the wide laser pulse based oh an electric modulation signal comprised of a plurality of time slot channels wherein the time slot channels in the electric modulation signal correspond to the wavelength channels in the wide laser pulse respectively. The modulator transfers a modulated wide laser pulse. Channels of the modulated wide laser pulse are hybrid wavelength and time slot channels. The transmitter singularly transmits a WDM optical signal comprised of multiple wavelength channels. The transmitter also allows a filter to drop time slot channels from a TDM optical signal instead of an expensive demultiplexer.
摘要:
A system for reducing the influence of polarization mode dispersion (PMD) in high speed fiber optical transmission channels. A signal is forward error correction (FEC) encoded according to an FEC code that defines a specified error tolerance per codeword. The invention then effectively randomizes the input polarization of the signal before transmission, in order to reduce the likelihood that PMD will distort one or more codewords beyond the allowed error tolerance. The invention will thereby increase the PMD-limited transmission distance in an optical transmission system.
摘要:
An electronic device includes an enclosure, a bracket, a connector, and a fan. The enclosure includes a bottom plate and two side plates located on the bottom plate. The bracket is secured to the side plates and includes a bottom wall. The bottom wall is substantially parallel to the bottom plate and defines an installing opening. Two locking pieces extend from two opposite edges of the installing opening. Each of the locking pieces defines a locking hole. The connector is secured in the installing opening, the connector comprising two resilient portions. A locking protrusion protrudes from each of the resilient portions. The locking protrusions of the resilient portions engage in the locking holes of the locking pieces. The resilient portions are deformable to disengage the locking protrusions from the locking holes. The fan is received in the bracket and adapted to be electrically coupled to the connector.
摘要:
A vibration dampening structure mounted on a mounting apparatus for a storage module includes a dampening member and a fastener. The dampening member defines a through hole. The fastener includes a head portion and a neck portion extending from the head. The neck portion is received in the through hole. The head portion has a smooth face to decrease friction between the head portion and the data storage module movable relative to the head.
摘要:
A server enclosure includes an enclosure body, and a cover panel located between the first side panel and the second side panel. The enclosure body includes a bottom panel, a first side panel, a second side panel extending from the bottom panel. The first side panel includes a side panel body and a mounting protrusion extending from the side panel body. The cover panel includes a connecting plate, a first cover plate pivotally mounted to the connecting plate, and a mounting element movably mounted to the first cover plate. The mounting element defines a cutout receiving the mounting protrusion. The first cover plate rotates about an axis. The mounting element moves along a first direction from a first position to a second position to enable the mounting protrusion to engage with the cutout.