Abstract: The disclosed computer-implemented method may include providing test signals from a panel test board included in a fixture to a device under test included in a carrier including providing interface signals from the panel test board to a connector included on a fixture interposer block included in the fixture, interfacing the connector on the fixture interposer block with one or more pogo pins included on a panel interposer board included in the carrier, the interfacing providing the interface signals as inputs to a re-timer circuit included on the panel interposer board, generating, by the re-timer circuit, output interface signals whose signal strength is greater than a signal strength of the interface signals input to the re-timer circuit, and providing the interface signals output from the re-timer circuit to the device under test. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: An active load circuit that includes a diode bridge having first through fourth nodes, wherein a voltage buffer is connected with the first node, a source current mirror is connected with the second node, the third node is configured for connection to a device under test (DUT), and a sink current mirror is connected with the fourth node. A first current mirror is connected with the source current mirror, and a second current mirror is connected with the sink current mirror. A first differential pair is connected with the first current mirror and includes an input connected with the DUT and a second input connected with the input voltage. A second differential pair is connected with the second current mirror and includes a first input connected with the DUT and a second input connected with the input voltage.

Abstract: A current detection circuit can include: a detection power switch coupled to a power switch to be detected; a current control circuit configured to control voltages of power terminals of the detection power switch in order to generate a detection current flowing through the detection power switch when the power switch is on; and where a flowing direction of the detection current is consistent with a flowing direction of a current flowing through the power switch.

Abstract: The present disclosure provides a display panel and a method for testing for occurrence of a crack in the display panel. The display panel includes a panel body, a ground line, a first ground connecting portion, a first testing portion, a second ground connecting portion, a second testing portion, a first switch and a second switch, the ground line surrounds the display region, the first ground connecting portion and the first testing portion are parallel connected to one end of the ground line, the second ground connecting portion and the second testing portion are parallel to another end of the ground line, the first switch is electrically connected between the first ground connecting portion and one end of the ground line, the second switch is electrically connected between the second ground connecting portion and another end of the ground line.

Abstract: A probe pin includes a coil spring extending and contracting along a center line, a first contact disposed on one side of the center line and having a rectangular cross section, and a second contact disposed on the other side of the center line and having a rectangular cross section. The first contact and the second contact are supported so as to be reciprocable via the spring coil and are electrically connected to each other. In particular, a contact surface of at least one of the first contact and the second contact is an inclined surface inclined so as to descend along a thickness direction.

Abstract: Example embodiments associated with characterizing a sample using NMR fingerprinting are described. One example NMR apparatus includes an NMR logic that repetitively and variably samples a (k, t, E) space associated with an object to acquire a set of NMR signals that are associated with different points in the (k, t, E) space. Sampling is performed with t and/or E varying in a non-constant way. The NMR apparatus may also include a signal logic that produces an NMR signal evolution from the NMR signals and a characterization logic that characterizes a tissue in the object as a result of comparing acquired signals to reference signals. Example embodiments facilitate distinguishing diseased tissue from healthy tissue based on tissue component fractions identified using the NMR fingerprinting.

Abstract: Devices, systems and methods for process monitoring are presented. For instance, the device includes a crystal and a reactance sensor. The crystal is connected to a frequency measurement circuit. The reactance sensor is connected to the crystal. The reactance sensor is configured to detect a change in a process parameter. The frequency measurement circuit detects the change in the process parameter as a change in the frequency of the crystal. In another example, the system includes a reactance sensor and a measurement device. The reactance sensor is disposed in a process chamber, and has a variable reactance responsive to a change in a process parameter. The measurement device is disposed outside the process chamber and has a frequency measurement circuit. The frequency measurement circuit includes a crystal and is connected to the reactance sensor, and detects the change in the process parameter as a change in the frequency of the crystal.

Abstract: The invention involves a multimeter with a meter probe module and phasing probe module capable of wireless communication, proximity measurements, and accurately reading phase degrees. The meter probe module and the phasing probe module can communicate wirelessly, via a wired cable interface, or any combination thereof. The meter probe module and phasing probe module have unique radio frequency serial numbers that allow the probe modules to only communicate with its paired partner probe module while ignoring all other probe modules. The multimeter has a measurement point capable of taking direct contact measurements. The multimeter also has a measurement point capable of taking a voltage measurement without directly contacting the object to be measured. This is accomplished by taking voltage readings from the electric field of the air surrounding said object. The improved multimeter may allow an operator to more safely gather accurate information about an object being measured.

Abstract: An input module may include a first resistor and a second resistor coupled in series with the first resistor. The input module may also include a switch that may electrically isolate the second resistor based on a voltage output by an additional input module electrically coupled to the input module via a terminal base.

Abstract: An LED fault detection circuit is provided for detecting a fault in at least one LED. The circuit may include a test voltage generator for applying at least one test voltage level to the at least one LED, wherein the at least one test voltage level is less than a nominal operating voltage range; a current measuring circuit for measuring at least one current draw by the at least one LED at the at least one test voltage level; and a processing circuit coupled to the test voltage generator for causing the at least one test voltage level to be applied to the at least one LED, the processing circuit coupled to the current measuring circuit for detecting a fault in the at least one LED when the at least one measured current draw has a profile that does not correspond to an expected current draw profile.

Abstract: A method for updating a crank position tooth number in a crank position sensor signal obtained from a crankshaft position sensor of an engine of a vehicle includes: calculating, in platform software of an engine control unit (ECU), a pulse width of a crank position sensor signal, determining, in the platform software of the ECU, a forward rotation and a reverse rotation of an engine, and updating, in the platform software of the ECU, the crank position tooth number.

Abstract: Estimating a charge state for a flat-voltage profile battery can be accomplished using impedance measurements. For example, an impedance measurement can be used to form a fuel gauge for a lithium-air (Li-Air) battery. As the impedance of a Li-Air battery increases during discharge, it corresponds to a state of charge (i.e., a charge state). The impedance can be used to create charge state data to use with a fuel gauge.

Abstract: A multi-probe anechoic chamber (MPAC) for beam performance testing of a phased array system, including an active electronically steered array (AESA) system. The MPAC may comprise: an AESA antenna having a plurality of subarrays capable of emitting RF energy; an anechoic chamber having a wall, comprising a plurality of horn antennas for receiving the RF energy; a switch electrically coupled to the horn antennas for selectively coupling of the horn antennas to one or more output channels; various instruments electrically coupled to the output channels for measuring the RF energy; and a processor electrically coupled to the switch and the instruments for controlling the selective coupling of the switch, such that the processor and instruments cooperatively monitor and measure various beam parameters associated with the RF energy.

Abstract: Provided are a method for measuring the magnetic transformation rate of a steel sheet in an annealing furnace and an apparatus for measuring the same, and a continuous annealing process and a continuous galvanizing process which utilize the method and the apparatus. One such method includes delivering an alternating-current driving signal to the surface of the steel sheet by using an air-core driving coil having a size larger than, a width of the steel sheet, measuring the driving signal reflected by the steel sheet by using air-core receiving coils having a size larger than the width of the steel sheet, and determining the magnetic transformation rate of the steel sheet by using a measurement processing unit based on a distance between the steel sheet and the driving coil which has been corrected by using the measured values of the driving signal obtained by using the receiving coils.

Abstract: Systems and methods for testing a protection relay, such as a primary bus protection relay, may include a testing device for providing current signals imitating current on both sides of a bus to the primary bus protection relay. The signals may be provided using signals corresponding with a signal format from merging units or other monitoring devices. The testing device may be configured to receive communications from the primary bus protection relay for evaluation of the operation of the primary bus protection relay.

Abstract: A rotation angle sensor system for an optical system that includes a rotor and a stator, includes a stator-based coil system having an inductance and for generating and transmitting a magnetic alternating field, and a rotor-based target that functions as an eddy current element for receiving the magnetic alternating field and generating a magnetic eddy current field. The coil system and the target are mounted or mountable fixedly, with respect to rotation, on the stator and the rotor, respectively, in such a way that different overlaps and/or spatial proximities between the coil system and the target, with correspondingly different effects on the magnetic alternating field of the coil system, result as a function of the rotation angle and/or of the orientation between the stator and the rotor.

Abstract: A method for determining a direction of a spin axis of a rotating apparatus which includes an XYZ-magnetic field sensor. The method includes determining a global direction of a magnetic field; rotating the rotating apparatus around the spin axis, measuring at least one magnetic field value as a function of time with the XYZ-magnetic field sensor when the rotating apparatus is rotating about the spin axis, computing a magnetic field component of the magnetic field in a direction of a local body co-ordinate of the spin axis of the rotating apparatus from the measured at least one magnetic field value and determining a direction of the spin axis using the computed magnetic field component of the magnetic field and the determined global direction of the magnetic field.

Abstract: In a device for sensing the position of a shift fork in a transmission, the shift fork is connected to a piston rod of a shifting piston which is guided axially in a shifting cylinder. The shift fork engages an axially slidable sliding sleeve, which slides on a transmission shaft, to engage or disengage a transmission stage. A magnet functioning as a signal generator is arranged on an actuating element, such as the switching piston, piston rod or shift fork. A 3D Hall sensor positionally fixed relative to the magnet functions as a signal receiver, sensing a magnetic field generated by the magnet. An electronic control unit connected to the 3D hall sensor determines the position of the shift fork from the relative positions of the magnet and 3D Hall sensor and transmits the position as a signal, taking into account linear, rotational, and/or pivoting movements of the actuating element.

Abstract: Disclosed is an aircraft sensor fault detection system. The system includes a sensor system having a sensing apparatus to measure a parameter of an environment and a measurement circuit coupled to the sensing apparatus. The system includes a source of alternating current connected to the sensor system. The system further includes an alternating current measurement system that measures alternating current passing through the sensor system and indicates an error when a threshold based on a change in impedance of the sensing apparatus is exceeded.

Abstract: A tool, system, and method are disclosed for locating a hidden stud and identifying angles on a finished wall. The tool includes an elongated housing, at least one magnet, and at least one level. The housing has a generally planar contact surface disposed opposite a viewing surface. The at least one magnet is secured to the housing such that a magnetic field from the at least one magnet extends from the contact surface. The level is secured to the housing such that the level is viewable from the viewing surface. The at least one magnet, the level, and the housing are sized relative to each other such that a magnetic attraction between the at least one magnet and a metallic element in the wall is sufficient to maintain the tool on the wall without external support.