Abstract: A circuit pack housing for providing EMI protection for a circuit pack which may be inserted into an electronics system such as a telecommunications base station cabinet. The circuit pack housing has a single piece plastic design which surrounds the enclosed circuit pack. The internal walls of the circuit pack housing are metalized, and the inner surface of the housing comprises one or more grounding tabs with metalized surfaces. The metalized plastic circuit pack housing also comprises two opposite living hinges and a self latching mechanism, such that when the circuit pack is placed inside the housing and the housing is closed on itself (i.e., with use of the living hinges), the circuit pack is sealed within the housing and protected from EMI thereby. Moreover, the housing may include protruding flexible tabs at the ends thereof, which advantageously seals around the connector which energizes the circuit pack.

Abstract: An electronics system is implemented within a compact enclosure comprising two or more hinged layers. The functionality corresponding to a shelf of a conventional cabinet resides in a corresponding layer. Backplanes are eliminated, each layer having contact surfaces that mate with matching surfaces of adjacent layers when the layers are rotated about their hinges into the closed configuration. Additional interconnection may be made through cabling housed within a special channel or compartment. Each layer may include cooling fans, which are smaller than conventional counterparts (due to shorter convection paths). Expansion may be effectuated by mating additional units of similar conformation in a modular fashion. Optionally, the functionality corresponding to a given layer may be implemented in circuitry integrated onto a single board to reduce cabling and facilitate replacement and repair. Additional functional layers may be stacked along the depth direction as well as the height or width direction.

Abstract: Techniques for determining how to translate forecast sales data of at least one configuration of assembled product into a forecast schedule of subcomponents composing the assembled product is described. To this end, forecast sales data of at least one configuration of assembled product is received. Usage factors of a plurality of subcomponents composing the assembled product are also received. Each usage factor corresponds to the at least one configuration of assembled product. The forecast schedule of subcomponents composing the assembled product is then composed by applying the usage factors of the plurality of subcomponents to the forecast sales data of at least one configuration of assembled product wherein the forecast schedule includes demand for the subcomponents over time.

Abstract: A protective enclosure includes one or more walls for surrounding an electronic device. At least one of the walls includes energy absorbing protrusions for absorbing the energies, etc., created when, and if, the electronic device unfortunately explodes due to a lightning strike.

Abstract: An electromagnetic shielding structure has conductive parts for blocking propagation of electromagnetic interference, whereof at least one has an appendage or an edge configuration that is shaped so as to bite into the edge of the other of the conductive parts, such as along a narrowing groove. The appendage or edge can have a structure resembling an insulation displacement connector, but is arranged to engage the edge of a sheet-like or planar shielding element, as opposed to biting into an insulated wire. The connection achieves both electrical and mechanical connection between the parts, preferably thereby completing at least part of a shielding enclosure.

Abstract: Optical fiber bend limiter that prevents contaminates from entering an optical fiber closure is described. The optical fiber bend limiter has an arcuate portion having a bend radius for limiting a minimum bend of an optical fiber. The bend limiter has a central recess for inserting a wall of an optical closure therein and limiting the minimum bend radius of an optical fiber. The bend limiter also includes peripheral recesses. When desired, the bend limiter is secured to a wall of the optical fiber closure via the peripheral recesses thereby closing the aperture and protecting the optical fibers from contaminants.

Abstract: An optical fiber trough includes a base member having a plurality of latches adapted to secure the optical fiber trough to an optical fiber closure. A retention member extends from the base member. The retention member includes a proximate edge supported by the base member and a distal edge. At least a portion of the distal edge is angled with respect to a plane of the base member.

Abstract: An optical fiber routing apparatus includes at least one optical fiber splice tray for retaining optical fibers therein, and at least one rack. Each rack includes at least one shelf extending from a rear wall for respectively supporting the at least one optical fiber splice tray. At least one retaining flange is respectively coupled to a front edge of each shelf, and a retaining means is respectively coupled to the rear wall proximate a rear edge of each shelf for retaining an optical fiber tray between the rear wall of the rack and the at least one retaining flange on the front edge of a shelf.

Abstract: The invention is directed to techniques and mechanisms for measuring transmission loss of a cable comprising the steps of disabling an antenna connected to a second end of the cable, feeding an input signal having an energy level into a first end of the cable for transmission of the input energy toward the second end of the cable, measuring a reflected energy, reflected back toward the first end of the cable from the second end of the cable, and comparing the reflected energy to a input energy to determine a cable loss. Directional couplers may be used to sample the input and reflected energy to be measured. The information derived from the comparison of input and reflected energy measurements can then be used to calibrate a transmitter thereby optimizing performance.

Abstract: Apparatus for enclosing a plurality of fiber optic cables in a sealed environment includes a housing, a lid, a hollow body projecting from the housing, at least one grommet disposed in the hollow body for securing one or more fiber optic cables in an orifice accessed by a slit provided therein and a cap disposed in front of the hollow body to compress the grommet and seal components passing through the grommet into the housing. The grommet is a single body with a plurality of orifices for receiving a plurality of fiber optic cables or a plurality of individually formed grommets each having one orifice.

Abstract: An optical fiber closure includes a housing having opposing walls, each of the opposing walls having an aperture defined therein. Each aperture is adapted to receive an optical fiber therethrough. A bend limiter is proximate each aperture. Each bend limiter includes a proximate edge, a distal edge, and an arcuate surface. The arcuate surface extends between the proximate and distal edges and has a radius of curvature greater than a predetermined minimum bend radius. The distal edge of each bend limiter is substantially aligned with an outer edge of a respective one of the opposing walls of the optical fiber closure.

Abstract: Optical fiber closure having a biased door adapted to cover a portion of an aperture not occupied by an optical fiber. The optical fiber closure has a wall. The wall has an aperture defined therein for receiving optical fibers. The wall also has a biased door adapted to cover a portion of the aperture not occupied by optical fibers.

Abstract: An optical connector assembly is described. In one example, a panel includes a plurality of apertures formed therein. A plurality of receptacles are respectively supported within the plurality of apertures. Each of the plurality of receptacles is adapted to communicate with an optical connector. In addition, each of the plurality of receptacles is disposed at an angle with respect to a plane of the panel, where the angle is less than 90 degrees. In another example, a housing includes opposing side walls. A panel is mounted within the housing. The panel includes a plurality of apertures for supporting optical connectors. A spool is mounted to one of the opposing side walls of the housing.

Abstract: Optical fiber bend limiter that prevents contaminates from entering an optical fiber closure is described. The optical fiber bend limiter has an arcuate portion having a bend radius for limiting a minimum bend of an optical fiber. The bend limiter has a central recess for inserting a wall of an optical closure therein and limiting the minimum bend radius of an optical fiber. The bend limiter also includes peripheral recesses. When desired, the bend limiter is secured to a wall of the optical fiber closure via the peripheral recesses thereby closing the aperture and protecting the optical fibers from contaminants.

Abstract: An optical fiber trough includes a base member having a plurality of latches adapted to secure the optical fiber trough to an optical fiber closure. A retention member extends from the base member. The retention member includes a proximate edge supported by the base member and a distal edge. At least a portion of the distal edge is angled with respect to a plane of the base member.

Abstract: An optical connector assembly is described. In one example, a panel includes a plurality of apertures formed therein. A plurality of receptacles are respectively supported within the plurality of apertures. Each of the plurality of receptacles is adapted to communicate with an optical connector. In addition, each of the plurality of receptacles is disposed at an angle with respect to a plane of the panel, where the angle is less than 90 degrees. In another example, a housing includes opposing side walls. A panel is mounted within the housing. The panel includes a plurality of apertures for supporting optical connectors. A spool is mounted to one of the opposing side walls of the housing.

Abstract: An optical fiber routing apparatus includes at least one optical fiber splice tray for retaining optical fibers therein, and at least one rack. Each rack includes at least one shelf extending from a rear wall for respectively supporting the at least one optical fiber splice tray. At least one retaining flange is respectively coupled to a front edge of each shelf, and a retaining means is respectively coupled to the rear wall proximate a rear edge of each shelf for retaining an optical fiber tray between the rear wall of the rack and the at least one retaining flange on the front edge of a shelf.

Abstract: The invention is directed to techniques and mechanisms for measuring transmission loss of a cable comprising the steps of disabling an antenna connected to a second end of the cable, feeding an input signal having an energy level into a first end of the cable for transmission of the input energy toward the second end of the cable, measuring a reflected energy, reflected back toward the first end of the cable from the second end of the cable, and comparing the reflected energy to a input energy to determine a cable loss. Directional couplers may be used to sample the input and reflected energy to be measured. The information derived from the comparison of input and reflected energy measurements can then be used to calibrate a transmitter thereby optimizing performance.

Abstract: Optical fiber closure having a biased door adapted to cover a portion of an aperture not occupied by an optical fiber. The optical fiber closure has a wall. The wall has an aperture defined therein for receiving optical fibers. The wall also has a biased door adapted to cover a portion of the aperture not occupied by optical fibers.

Abstract: Optical ribbon cable fan-out device includes a top cover portion, a fan-out portion and a bottom portion formed as a unitary body. The fan-out portion has an array of guides housing individual fibers of the optical ribbon cable. The top cover portion and bottom cover portion are connected respectively to the fan-out portion by first and second hinges. The top cover portion and the bottom cover portion each have a plate projecting respectively therefrom to secure a ribbon cable in an axis extending longitudinally through the fan-out apparatus. The fan-out portion is so configured that a first portion of the arrayed guides is co-linear with the axis, a second portion of the arrayed guides is above the axis and a third of the arrayed guides is below the axis. The fan-out apparatus defines pathways for individual optical fibers having a bend radius of at least approximately 1.5 inches.