Abstract: According to one embodiment of the present disclosure, a circuit board includes a substrate including a slot, electronic components connected to the substrate, a board connector connected to the substrate and communicatively connected to the electronic components, and an installation tool including a lug and a pedestal. The pedestal is positioned through the slot and the lug is positioned in the slot to slidably connect the installation tool to the substrate, and the installation tool extends beyond an end of the substrate.

Abstract: According to one embodiment of the present disclosure, a circuit board includes a substrate including a slot, electronic components connected to the substrate, a board connector connected to the substrate and communicatively connected to the electronic components, and an installation tool including a lug and a pedestal. The pedestal is positioned through the slot and the lug is positioned in the slot to slidably connect the installation tool to the substrate, and the installation tool extends beyond an end of the substrate.

Abstract: An assembly includes: a server rack; first side and second side outer rails attached to the rack and positionally fixed relative to the rack; a support device attached to the rack adjacent to a rear of the rack; a computer network switch having a port side positioned adjacent to the rear of the rack; and first side and second side inner rails attached to the network switch and positionally fixed relative to the network switch, the inner rails being slidably attached to the outer rails. The network switch is movable between a retracted position and an extended position, and the support device is located such that the support device physically blocks the network switch from being removed from the rear of the server rack.

Abstract: An apparatus includes a connector cover and a lever arm coupled to the connector cover, the lever arm being shaped to accommodate a portion of an activating pin, wherein contact of the activating pin with the lever arm causes a movement of the connector cover from a first position to a second position. The apparatus includes a latch assembly comprising a clamp, the clamp in a clamped position preventing the connector cover from moving from the first position to a second position. The apparatus includes a first bracket with a first indentation, the first indentation being sized to accommodate a portion of a first locating pin, wherein an insertion of the first locating pin into the first indentation moves the clamp from the clamped position to an unclamped position, the unclamped position permitting the connector cover to move when activated by the insertion of the activating pin.

Abstract: An apparatus includes a connector cover and a lever arm coupled to the connector cover, the lever arm being shaped to accommodate a portion of an activating pin, wherein contact of the activating pin with the lever arm causes a movement of the connector cover from a first position to a second position. The apparatus includes a latch assembly comprising a clamp, the clamp in a clamped position preventing the connector cover from moving from the first position to a second position. The apparatus includes a first bracket with a first indentation, the first indentation being sized to accommodate a portion of a first locating pin, wherein an insertion of the first locating pin into the first indentation moves the clamp from the clamped position to an unclamped position, the unclamped position permitting the connector cover to move when activated by the insertion of the activating pin.

Abstract: An assembly includes: a server rack; first side and second side outer rails attached to the rack and positionally fixed relative to the rack; a support device attached to the rack adjacent to a rear of the rack; a computer network switch having a port side positioned adjacent to the rear of the rack; and first side and second side inner rails attached to the network switch and positionally fixed relative to the network switch, the inner rails being slidably attached to the outer rails. The network switch is movable between a retracted position and an extended position, and the support device is located such that the support device physically blocks the network switch from being removed from the rear of the server rack.

Abstract: A method is presented for adjusting coolant flow resistance through one or more liquid-cooled electronics racks. Flow restrictors are employed in association with multiple heat exchange tube sections of a heat exchange assembly, or in association with a plurality of coolant supply lines or coolant return lines feeding multiple heat exchange assemblies. Flow restrictors associated with respective heat exchange tube sections (or respective heat exchange assemblies) are disposed at the coolant channel inlet or coolant channel outlet of the tube sections (or of the heat exchange assemblies). These flow restrictors tailor coolant flow resistance through the heat exchange tube sections or through the heat exchange assemblies to enhance overall heat transfer within the tube sections or across heat exchange assemblies by tailoring coolant flow.

Abstract: Flow restrictors are employed in association with multiple heat exchange tube sections of a heat exchange assembly, or in association with multiple coolant supply lines or coolant return lines feeding multiple heat exchange assemblies. Flow restrictors associated with respective heat exchange tube sections (or respective heat exchange assemblies) are disposed at the coolant channel inlet or coolant channel outlet of the tube sections (or of the heat exchange assemblies). These flow restrictors tailor coolant flow resistance through the heat exchange tube sections or through the heat exchange assemblies to control overall heat transfer within the tube sections or across heat exchange assemblies. In one embodiment, the flow restrictors tailor a coolant flow distribution differential across multiple heat exchange tube sections or across multiple heat exchange assemblies.

Abstract: A method is presented for adjusting coolant flow resistance through one or more liquid-cooled electronics racks. Flow restrictors are employed in association with multiple heat exchange tube sections of a heat exchange assembly, or in association with a plurality of coolant supply lines or coolant return lines feeding multiple heat exchange assemblies. Flow restrictors associated with respective heat exchange tube sections (or respective heat exchange assemblies) are disposed at the coolant channel inlet or coolant channel outlet of the tube sections (or of the heat exchange assemblies). These flow restrictors tailor coolant flow resistance through the heat exchange tube sections or through the heat exchange assemblies to enhance overall heat transfer within the tube sections or across heat exchange assemblies by tailoring coolant flow.

Abstract: A method is presented for adjusting coolant flow resistance through one or more liquid-cooled electronics racks. Flow restrictors are employed in association with multiple heat exchange tube sections of a heat exchange assembly, or in association with a plurality of coolant supply lines or coolant return lines feeding multiple heat exchange assemblies. Flow restrictors associated with respective heat exchange tube sections (or respective heat exchange assemblies) are disposed at the coolant channel inlet or coolant channel outlet of the tube sections (or of the heat exchange assemblies). These flow restrictors tailor coolant flow resistance through the heat exchange tube sections or through the heat exchange assemblies to enhance overall heat transfer within the tube sections or across heat exchange assemblies by tailoring coolant flow.

Abstract: A cooling apparatus and method are provided which include an air-to-liquid heat exchanger and system coolant inlet and outlet plenums mounted to an electronics rack door along an edge of the door remote from the edge hingedly mounted to the rack. The plenums are in fluid communication with the heat exchanger and respectively include an inlet and outlet. Coolant supply and return hoses are disposed above the electronics rack and couple the inlet plenum to a coolant supply header and the outlet plenum to a coolant return header. The hoses are sufficiently long and flexible to open or close the door. A stress relief structure is attached to the top of the door and clamps the supply and return hoses in fixed relation to relieve stress on connect couplings at the ends of the hoses to the plenum inlet and outlet during opening or closing of the door.

Abstract: Apparatuses and methods are presented for adjusting coolant flow resistance through one or more liquid-cooled electronics racks. Flow restrictors are employed in association with multiple heat exchange tube sections of a heat exchange assembly, or in association with a plurality of coolant supply lines or coolant return lines feeding multiple heat exchange assemblies. Flow restrictors associated with respective heat exchange tube sections (or respective heat exchange assemblies) are disposed at the coolant channel inlet or coolant channel outlet of the tube sections (or of the heat exchange assemblies). These flow restrictors tailor coolant flow resistance through the heat exchange tube sections or through the heat exchange assemblies to enhance overall heat transfer within the tube sections or across heat exchange assemblies by tailoring coolant flow.

Abstract: A cooling apparatus and method are provided which include an air-to-liquid heat exchanger and system coolant inlet and outlet plenums mounted to an electronics rack door along an edge of the door remote from the edge hingedly mounted to the rack. The plenums are in fluid communication with the heat exchanger and respectively include an inlet and outlet. Coolant supply and return hoses are disposed above the electronics rack and couple the inlet plenum to a coolant supply header and the outlet plenum to a coolant return header. The hoses are sufficiently long and flexible to open or close the door. A stress relief structure is attached to the top of the door and clamps the supply and return hoses in fixed relation to relieve stress on connect couplings at the ends of the hoses to the plenum inlet and outlet during opening or closing of the door.

Abstract: A method and apparatus for clamping a semiconductor mask to a carrier device is taught. The apparatus is comprised of a base member to which is attached an elongated spring. Both the base and the spring have affixed to them a means for compressively contacting the mask surface when the mask is put in place. In the preferred embodiment, that contact means is made of sapphire shaped in the form of a dome. The clamp further includes an adjustment screw that can be used to adjust the height of the contact means affixed to the base member. In this manner, the surface of the mask can be adjusted so that it is planarized to the right orientation relative to an e-Beam or laser source that will be used to scribe a pattern on the mask. Finally, the clamp includes electrical contacts, and the materials out of which the clamp is made are deliberately selected, so that no electrical or magnetic forces can build up on the clamp or the wafer that might adversely affect the scribing process.

Abstract: A method and apparatus for clamping a semiconductor mask to a carrier device is taught. The apparatus is comprised of a base member to which is attached an elongated spring. Both the base and the spring have affixed to them a means for compressively contacting the mask surface when the mask is put in place. In the preferred embodiment, that contact means is made of sapphire shaped in the form of a dome. The clamp further includes an adjustment screw that can be used to adjust the height of the contact means affixed to the base member. In this manner, the surface of the mask can be adjusted so that it is planarized to the right orientation relative to an e-Beam or laser source that will be used to scribe a pattern on the mask. Finally, the clamp includes electrical contacts, and the materials out of which the clamp is made are deliberately selected, so that no electrical or magnetic forces can build up on the clamp or the wafer that might adversely affect the scribing process.

Abstract: A device for testing multi-fiber optical cables includes a number of test stations into which an end of a cable under test is plugged. Some to the test stations provide for the attachment of an array connector, while others provide for the attachment of a number of discrete connectors. The optical input/output port of an OTDR unit is connected to each of the test stations through an optical switch, which connects this port with only one such station at a time. Within each station, signals from the optical switch are divided among a number of light paths by a splitter, which also returns signals from these light paths to the OTDR through the optical switch. The various light paths within each station include fiber optic jumpers which vary in length, so that a single test pulse from the OTDR is reflected back from a number of interfaces in the cable under test as a train of pulses.

Abstract: In a tool for measuring optical power on a fiber optic cable link, optical conditioning means in conjunction with a splitter are used to achieve measurement consistency and repeatability. In accordance with preferred embodiments of the present invention, light conditioning means are provided by disposing the optical fiber cable in a position so as to achieve mode filtering. This may be accomplished either by disposing the optical fiber in a coil, as for example in a mandrel, or disposing the coil in a series of serpentine or zig-zag paths.

Abstract: A station for testing fiber optic jumper cables includes four indexing plugboard stations. A single cable to be tested is typically attached to extend between two of the plugboard stations. Each plugboard station includes three columns of plug positions, corresponding to three styles of connecters which may be used at the ends of the cable to be tested. An upper row, and a central row, of plug positions correspond to the contact types (PC or APC) which may be used. An indexing mechanism is provided to align one of the plug positions in the central row with a reference cable extending from the plugboard station. Reference jumpers extend from the upper row, being docked in a lower row of plug positions if the cable to be tested is connected to the central row, or being plugged into the central row if the cable to be tested is connected to the upper row.