Abstract: A pipeline pig that can traverse dual- or multiple-diameter pipes or pipelines has collapsible and expandable sealing elements that support the pig, provide a sliding (dynamic) seal with the pipe wall, and maintain the necessary pressure for driving or cleaning as the elements collapse and expand. The sealing elements each have an internal cavity sized to house a first volume of a fluid and a reservoir sized to house a second volume of the fluid. The cavity and reservoir are arranged so that a portion of the volumes of the fluid can move between each. An accumulator maintains a pressure of the first and second volumes of the fluid so that regardless of the sealing element's current size, or whether the element is transitioning between sizes, the element can maintain a sliding seal engagement with the pipe wall and perform the primary function of driving or cleaning (or both).

Abstract: A flow assurance system and method includes procedures to query current valve states and determine the likely effect of new valve states on product flow when using an automated pig launcher. The system and method allows for modulating the mainline bypass valve, kicker valve, and isolation valve between fully opened and fully closed states; prevents flow blocking of the pipeline during this modulation; enables new and different, as well as a broader range of, pig launching options for an automatic pig launcher; and integrates with existing automatic pig launchers.

Abstract: A flow assurance system and method includes procedures to query current valve states and determine the likely effect of new valve states on product flow when using an automated pig launcher. The system and method allows for modulating the mainline bypass valve, kicker valve, and isolation valve between fully opened and fully closed states; prevents flow blocking of the pipeline during this modulation; enables new and different, as well as a broader range of, pig launching options for an automatic pig launcher; and integrates with existing automatic pig launchers.

Abstract: A pipeline pig that can traverse dual- or multiple-diameter pipes or pipelines has collapsible and expandable sealing elements that support the pig, provide a sliding (dynamic) seal with the pipe wall, and maintain the necessary pressure for driving or cleaning as the elements collapse and expand. The sealing elements each have an internal cavity sized to house a first volume of a fluid and a reservoir sized to house a second volume of the fluid. The cavity and reservoir are arranged so that a portion of the volumes of the fluid can move between each. An accumulator maintains a pressure of the first and second volumes of the fluid so that regardless of the sealing element's current size, or whether the element is transitioning between sizes, the element can maintain a sliding seal engagement with the pipe wall and perform the primary function of driving or cleaning (or both).

Abstract: A device is configured to evaluate electromagnetic characteristics of an integrated circuit. The device includes a fluid chamber, a first impeller, a second impeller, and a radio frequency measurement antenna. The fluid chamber is configured to receive the integrated circuit and to cool the integrated circuit. The first impeller is disposed within the fluid chamber and configured to distribute a first electromagnetic field produced by the integrated circuit within the fluid chamber along a first axis. The second impeller is within the fluid chamber and configured to distribute the first electromagnetic field produced by the integrated circuit within the fluid chamber along a second axis. The radio frequency measurement antenna is disposed proximate the fluid chamber and configured to measure an electric field and a magnetic field of the first electromagnetic field.

Abstract: A chassis shielding effectiveness evaluation system includes a chassis having a chassis ground. A board is located in the chassis and includes a board ground layer. A signal generator includes at least one ground member coupled to the chassis ground and a signal member coupled to the board ground layer. The signal generator is operable to send a signal through the signal member to the board ground layer.

Abstract: A device is configured to evaluate electromagnetic characteristics of an integrated circuit. The device includes a fluid chamber, a first impeller, a second impeller, and a radio frequency measurement antenna. The fluid chamber is configured to receive the integrated circuit and to cool the integrated circuit. The first impeller is disposed within the fluid chamber and configured to distribute a first electromagnetic field produced by the integrated circuit within the fluid chamber along a first axis. The second impeller is within the fluid chamber and configured to distribute the first electromagnetic field produced by the integrated circuit within the fluid chamber along a second axis. The radio frequency measurement antenna is disposed proximate the fluid chamber and configured to measure an electric field and a magnetic field of the first electromagnetic field.

Abstract: A system for operating a data storage device having a plurality of sectors and at least one port, each port having a transmitter and a receiver, is disclosed. In one embodiment the system includes coupling at least one of the transmitters to at least one of the receivers, providing power to the data storage device, detecting that the transmitter is coupled to the receiver, and executing code for exercising the data storage device.

Abstract: A device is configured to evaluate electromagnetic characteristics of an integrated circuit. The device includes a fluid chamber, a first impeller, a second impeller, and a radio frequency measurement antenna. The fluid chamber is configured to receive the integrated circuit and to cool the integrated circuit. The first impeller is disposed within the fluid chamber and configured to distribute a first electromagnetic field produced by the integrated circuit within the fluid chamber along a first axis. The second impeller is within the fluid chamber and configured to distribute the first electromagnetic field produced by the integrated circuit within the fluid chamber along a second axis. The radio frequency measurement antenna is disposed proximate the fluid chamber and configured to measure an electric field and a magnetic field of the first electromagnetic field.

Abstract: An information handling system includes a digital circuit having a first terminal connected to a first voltage reference, and a second terminal connected to a second voltage reference. The digital circuit is configured to be coupled to a radio device. The system also includes a band pass filter having a first terminal connected to the first voltage reference, and a second terminal connected to the second voltage reference. The bandpass filter is configured to produce a low impedance response, to reduce a radio frequency noise generated at a specific frequency band of the band pass filter, and to reduce a radio frequency interference produced by the digital circuit and received at the radio device.

Abstract: A communication interface employing a differential circuit and method of use is disclosed. In one form, a circuit operable to communicate signals via a communication bus can include a differential signaling circuit operable to be coupled to a communication bus. The differential signaling circuit can include a first current carrying element and a second current carrying element. The circuit can also include a shunt circuit including a first transformer. The first transformer can include a primary transformer element and a secondary transformer element. The first transformer can be operably associated with the communication bus.

Abstract: A chassis shielding effectiveness evaluation system includes a chassis having a chassis ground. A board is located in the chassis and includes a board ground layer. A signal generator includes at least one ground member coupled to the chassis ground and a signal member coupled to the board ground layer. The signal generator is operable to send a signal through the signal member to the board ground layer.

Abstract: A device is configured to evaluate electromagnetic characteristics of an integrated circuit. The device includes a fluid chamber, a first impeller, a second impeller, and a radio frequency measurement antenna. The fluid chamber is configured to receive the integrated circuit and to cool the integrated circuit. The first impeller is disposed within the fluid chamber and configured to distribute a first electromagnetic field produced by the integrated circuit within the fluid chamber along a first axis. The second impeller is within the fluid chamber and configured to distribute the first electromagnetic field produced by the integrated circuit within the fluid chamber along a second axis. The radio frequency measurement antenna is disposed proximate the fluid chamber and configured to measure an electric field and a magnetic field of the first electromagnetic field.

Abstract: A system for operating a data storage device having a plurality of sectors and at least one port, each port having a transmitter and a receiver, is disclosed. In one embodiment the system includes coupling at least one of the transmitters to at least one of the receivers, providing power to the data storage device, detecting that the transmitter is coupled to the receiver, and executing code for exercising the data storage device.

Abstract: A data storage device includes a plurality of sectors and a port, the port having a transmitter and a receiver. In one embodiment a method includes coupling the transmitter to receiver, providing power to the data storage device, detecting that the transmitter is coupled to the receiver, and executing code for exercising the data storage device.

Abstract: An information handling system includes a digital circuit having a first terminal connected to a first voltage reference, and a second terminal connected to a second voltage reference. The digital circuit is configured to be coupled to a radio device. The system also includes a band pass filter having a first terminal connected to the first voltage reference, and a second terminal connected to the second voltage reference. The bandpass filter is configured to produce a low impedance response, to reduce a radio frequency noise generated at a specific frequency band of the band pass filter, and to reduce a radio frequency interference produced by the digital circuit and received at the radio device.

Abstract: Electromagnetic compatibility of an information handling system and peripheral for achieving defined electromagnetic interference constraints is tested through a test adapter that interfaces with an external cable connecting the information handling system and peripheral. Signals from the external cable are passed through an isolation resistor and parallel capacitance to compensate for input capacitance of a signal tester. A common mode choke isolates a common mode component of the signal at the external cable. A noise generator applies a signal through the test adapter to the external cable to allow measurement of signals emitted from the peripheral due to injected noise.

Abstract: A method for operating a data storage device having a plurality of sectors and at least one port, each port having a transmitter and a receiver, is disclosed. In one embodiment the method includes coupling at least one of the transmitters to at least one of the receivers, providing power to the data storage device, detecting that the transmitter is coupled to the receiver, and executing code for exercising the data storage device.

Abstract: A communication interface employing a differential circuit and method of use is disclosed. In one form, a circuit operable to communicate signals via a communication bus can include a differential signaling circuit operable to be coupled to a communication bus. The differential signaling circuit can include a first current carrying element and a second current carrying element. The circuit can also include a shunt circuit including a first transformer. The first transformer can include a primary transformer element and a secondary transformer element. The first transformer can be operably associated with the communication bus.

Abstract: EMI from an operating information handling system is managed by disposing a stirring device in the chassis of the information handling system to mechanically modulate the resonance of predetermined RF signals emitted from processing components within the chassis. For example, a cooling fan disposed in the chassis has a reflective surface formed on its blades so that rotation of the blades mechanically modulates the RF signals. The blades have a depth of at least one-quarter of the wavelength of the RF signal and are coated with a low resistance material, such as steel, aluminum, copper, carbon loaded plastic or a high dielectric ceramic. The fan rotates at the faster of the speed required to provide desired cooling or the speed desired to produce a desired average RF signal amplitude.