Abstract: An improved total field calibration system and method is disclosed for reducing the rotational misalignment between magnetic and gravity sensors in a directional sensing system. A method of calibrating a tri-axial directional sensor comprising orthonormal accelerometers and orthonormal magnetometers, comprises measuring Earth's magnetic and gravity fields with said directional sensor in at least 4 sensor orientations; obtaining at least one reference field value of dip drift of Earth's magnetic field from at least one source independent of said directional sensor corresponding to said orientations; and, determining and applying rotational misalignments between said magnetometers and said accelerometers so that measured magnetic dip drifts are substantially equal to said reference values. The calibration process can be performed without monitoring the declination change during the calibration process.

Abstract: An improved total field calibration system and method is disclosed for reducing the rotational misalignment between magnetic and gravity sensors in a directional sensing system. A method of calibrating a tri-axial directional sensor comprising orthonormal accelerometers and orthonormal magnetometers, comprises measuring Earth's magnetic and gravity fields with said directional sensor in at least 4 sensor orientations; obtaining at least one reference field value of dip drift of Earth's magnetic field from at least one source independent of said directional sensor corresponding to said orientations; and, determining and applying rotational misalignments between said magnetometers and said accelerometers so that measured magnetic dip drifts are substantially equal to said reference values. The calibration process can be performed without monitoring the declination change during the calibration process.

Abstract: An improved total field calibration system and method is disclosed for reducing the rotational misalignment between magnetic and gravity sensors in a directional sensing system. A method of calibrating a tri-axial directional sensor comprising orthonormal accelerometers and orthonormal magnetometers, comprises measuring Earth's magnetic and gravity fields with said directional sensor in at least 4 sensor orientations; obtaining at least one reference field value of dip drift of Earth's magnetic field from at least one source independent of said directional sensor corresponding to said orientations; and, determining and applying rotational misalignments between said magnetometers and said accelerometers so that measured magnetic dip drifts are substantially equal to said reference values. The calibration process can be performed without monitoring the declination change during the calibration process.

Abstract: An improved total field calibration system and method is disclosed for reducing the rotational misalignment between magnetic and gravity sensors in a directional sensing system. A method of calibrating a tri-axial directional sensor comprising orthonormal accelerometers and orthonormal magnetometers, comprises measuring Earth's magnetic and gravity fields with said directional sensor in at least 4 sensor orientations; obtaining at least one reference field value of dip drift of Earth's magnetic field from at least one source independent of said directional sensor corresponding to said orientations; and, determining and applying rotational misalignments between said magnetometers and said accelerometers so that measured magnetic dip drifts are substantially equal to said reference values. The calibration process can be performed without monitoring the declination change during the calibration process.

Abstract: Systems and methods for the measurement of geomagnetic field and an axial magnetic interference field using a directional sensor at a survey point are described. Generally, the directional sensor is used to make axial magnetic field measurements at three or more separate locations inside the directional sensor along the sensor tool axis. A computing system receives the axial magnetic field measurements and solves a set of simultaneous equations to obtain the axial component of the geomagnetic field.

Abstract: An improved total field calibration system and method is disclosed for reducing the rotational misalignment between magnetic and gravity sensors in a directional sensing system. A method of calibrating a tri-axial directional sensor comprising orthonormal accelerometers and orthonormal magnetometers, comprises measuring Earth's magnetic and gravity fields with said directional sensor in at least 4 sensor orientations; obtaining at least one reference field value of dip drift of Earth's magnetic field from at least one source independent of said directional sensor corresponding to said orientations; and, determining and applying rotational misalignments between said magnetometers and said accelerometers so that measured magnetic dip drifts are substantially equal to said reference values. The calibration process can be performed without monitoring the declination change during the calibration process.

Abstract: An improved total field calibration system and method is disclosed for reducing the rotational misalignment between magnetic and gravity sensors in a directional sensing system. A method of calibrating a tri-axial directional sensor that includes orthonormal accelerometers and orthonormal magnetometers is disclosed. The method includes measuring Earth's magnetic and gravity fields with said directional sensor in at least 4 sensor orientations; obtaining at least one reference field value of dip drift of Earth's magnetic field from at least one source independent of said directional sensor corresponding to said orientations; and, determining and applying rotational misalignments between said magnetometers and said accelerometers so that measured magnetic dip drifts are substantially equal to said reference values. The calibration process can be performed without monitoring the declination change during the calibration process.

Abstract: An improved total field calibration system and method is disclosed for reducing the rotational misalignment between magnetic and gravity sensors in a directional sensing system. A method of calibrating a tri-axial directional sensor comprising orthonormal accelerometers and orthonormal magnetometers, comprises measuring Earth's magnetic and gravity fields with said directional sensor in at least 4 sensor orientations; obtaining at least one reference field value of dip drift of Earth's magnetic field from at least one source independent of said directional sensor corresponding to said orientations; and, determining and applying rotational misalignments between said magnetometers and said accelerometers so that measured magnetic dip drifts are substantially equal to said reference values. The calibration process can be performed without monitoring the declination change during the calibration process.

Abstract: An improved total field calibration system and method is disclosed for reducing the rotational misalignment between magnetic and gravity sensors in a directional sensing system. The effect of variation of surface components of the Earth's magnetic field during the calibration process on magnetometer misalignment may be completely eliminated by requiring the magnetic dip derived from the sensing system to match that of the Earth's field obtained from a reference source. The calibration process can be performed without monitoring the declination change during the calibration process. Directional sensing systems can be calibrated accurately during a period when the Earth's magnetic field changes rapidly.

Abstract: An improved total field calibration system and method is disclosed for reducing the rotational misalignment between magnetic and gravity sensors in a directional sensing system. The effect of variation of surface components of the Earth's magnetic field during the calibration process on magnetometer misalignment may be completely eliminated by requiring the magnetic dip derived from the sensing system to match that of the Earth's field obtained from a reference source. The calibration process can be performed without monitoring the declination change during the calibration process. Directional sensing systems can be calibrated accurately during a period when the Earth's magnetic field changes rapidly.

Abstract: An electronic module package that includes an electronic module configured to receive input signals and process the input signals to provide output signals. The module package also includes an interposer having a board substrate with opposite mounting and substrate surfaces. The mounting surface has a mounting array of electrical contacts. The substrate surface has a module array of electrical contacts and a component array of electrical contacts. The electronic module is attached to the substrate surface and electrically coupled to the module array. The interposer includes first conductive pathways that electrically couple the module array and the mounting array and also includes second conductive pathways that electrically couple the module array and the component array.

Abstract: A photonic assembly includes a midplane connector having connector channels extending therethrough. Fiber optic connectors are positioned within the connector channels of the midplane connector. The fiber optic connectors retain ferrules of midplane optical fibers and aligning the ferrules of the midplane optical fibers within the midplane connector. A midplane substrate is provided having an opening extending therethrough. The midplane connector is positioned within the opening of the midplane substrate. The midplane connector floats within the opening of the midplane substrate to position the ferrules of the midplane optical fibers.

Abstract: An electronic module package that includes an electronic module configured to receive input signals and process the input signals to provide output signals. The module package also includes an interposer having a board substrate with opposite mounting and substrate surfaces. The mounting surface has a mounting array of electrical contacts. The substrate surface has a module array of electrical contacts and a component array of electrical contacts. The electronic module is attached to the substrate surface and electrically coupled to the module array. The interposer includes first conductive pathways that electrically couple the module array and the mounting array and also includes second conductive pathways that electrically couple the module array and the component array.

Abstract: A photonic assembly includes a midplane connector having connector channels extending therethrough. Fiber optic connectors are positioned within the connector channels of the midplane connector. The fiber optic connectors retain ferrules of midplane optical fibers and aligning the ferrules of the midplane optical fibers within the midplane connector. A midplane substrate is provided having an opening extending therethrough. The midplane connector is positioned within the opening of the midplane substrate. The midplane connector floats within the opening of the midplane substrate to position the ferrules of the midplane optical fibers.

Abstract: Power connector including a connector housing having a mating side configured to engage an electrical connector. The connector housing also has a mounting side configured to interface with a circuit board. The connector housing includes a housing cavity that opens to the mating side. The power connector also includes a power contact that is held within the housing cavity. The power contact includes a body panel that extends along a contact plane and has board terminals and a contact terminal that extend from the body panel. The board terminals extend away from the body panel in a mounting direction to engage the circuit board. The contact terminal extends in a different direction that is one of parallel to the circuit board or away from the circuit board. The power contact is configured to transmit electrical power through the board terminals and through the contact terminal.

Abstract: A connector assembly adapted for mounting to a panel having a cutout includes a connector having a body including sides defining a perimeter configured to fit within the cutout. The connector includes a flange extending outward from one of the sides of the body, and the flange is configured to engage a front surface of the panel to define a stop against the panel when the connector is in a mated position. The connector is configured to be one of either front loaded through the cutout from a front of the panel to the mated position or rear loaded through the cutout from a rear of the panel to the mated position.

Abstract: A connector assembly adapted for mounting to a panel having a cutout includes a connector having a body including sides defining a perimeter configured to fit within the cutout. The connector includes a flange extending outward from one of the sides of the body, and the flange is configured to engage a front surface of the panel to define a stop against the panel when the connector is in a mated position. The connector is configured to be one of either front loaded through the cutout from a front of the panel to the mated position or rear loaded through the cutout from a rear of the panel to the mated position.