Abstract: In the present disclosure, there is provided a permeability measurement jig including a first waveguide, wherein a signal line of the first waveguide comprises an excited magnetic part at one end side, and a magnetic field is generated at the excited magnetic part by an excitation signal, and a second waveguide, wherein a signal line of the second waveguide comprises a detection part at one end side, a detection signal is induced at the detection part due to an action of the magnetic field generated at the excited magnetic part to a measurement sample, and the detection part is placed on the excited magnetic part to face the excited magnetic part at a predetermined distance. A permeability measurement device having the permeability measurement jig and a permeability measurement method are disclosed.

Abstract: Delivery of an implantable wireless receiver-stimulator (R-S) into the heart using delivery catheter is described. R-S comprises a cathode and an anode and wirelessly receives and converts energy, such as acoustic ultrasound energy, to electrical energy to stimulate the heart. Conductive wires routed through the delivery system temporarily connect R-S electrodes to external monitor and pacing controller. R-S comprises a first temporary electrical connection from the catheter to the cathode, and a second temporary electrical connection from the catheter to the anode. Temporary electrical connections allow external monitoring of heart's electrical activity as sensed by R-S electrodes to determine tissue viability for excitation as well as to assess energy conversion efficiency.

Abstract: A system of the present disclosure has a host testing device having a first wireless transceiver and having host testing device logic configured to transmit a test command via the first wireless transceiver. Additionally, the system has a remote testing device coupled to a system component. The remote testing device has a second wireless transceiver and remote testing device logic that receives the test command from the host testing device and executes the test command on the system component.

Abstract: A detection apparatus and a detecting method thereof are provided. In the method, an input impedance structure, a sensing impedance structure and an output impedance structure are provided. The sensing impedance structure is connected to the input impedance structure. At least two impedances are formed in the sensing impedance structure. The output impedance structure is connected to the sensing impedance structure. At least three discontinuous impedance surfaces are formed in the input impedance structure, the sensing impedance structure and the output impedance structure. A detection signal is inputted into the input impedance structure, and the detection signal passes through the three impedance structures. Then, a variation of at least one of the discontinuous impedance surfaces can be determined according to the outputted detection signal from the output impedance structure.

Abstract: A method can be used for phase selection using multi-terminal measurements of a transmission line of a power system. The method includes obtaining, using measurements from a plurality of terminals of the transmission line, delta differential current values ?IdiffA(t), ?IdiffB(t), ?IdiffC(t), at time t, between pre-fault differential current measurements and post-fault differential current measurements from all three phases (A, B, C) of the transmission line. The method also includes determining at least one of the phases to be faulty when the absolute value of the corresponding delta differential current value is larger than k times the minimum of all the absolute values I?IdiffA(t)|, |?IdiffB(t)|, |?IdiffC(t)| of the delta differential current values, where k>1 is a scale factor.

Abstract: There is described a method for assembling or repairing a connectorized electrical equipment in an environment. The method comprises connecting an Automated Test Equipment (ATE) to an origin connector of the connectorized electrical equipment to be assembled or repaired, for tracking connections. A connection between the origin connector and a destination electrical component is identified using the ATE and sent to a computing device. The computing device compares the connection identified by the ATE with a connectivity list required for the connectorized electrical equipment to determine a next step of the assembling or the repairing which depends on the connection identified by the ATE. A visual aid representative of the next step is generated and outputted to an apparatus which provides, to a user, the visual aid superimposed with the environment or in a virtual environment. A plurality of workers can receive a personalized visual aid on their own apparatus.

Abstract: An interface control circuit complying with an interface specification includes: an interface signal transceiver circuit and a protection circuit. The interface signal transceiver circuit is coupled to a first interface connection pin and a second interface connection pin of a first interface connector circuit. The interface signal transceiver circuit is for transmitting and/or receiving an interface signal according to the interface specification. When the interface signal transceiver circuit operates under a first state, the protection circuit determines whether a foreign object exists between the first interface connection pin and the second interface connection pin according to a voltage change or a current change at the second interface connection pin. Under the first state, the interface signal transceiver circuit generates a pull-up signal and a pull-down signal which are toggled with each other at the first interface connection pin.

Abstract: This disclosure provides systems, methods and apparatuses, including computer programs encoded on computer-readable media, for near ultra-low energy field (NULEF) headset communications. In some aspects, a source device, located in a seat headrest, can generate a modulated magnetic field capable of transferring data via a magnetic communication link, such as a NULEF communication link. The source device can establish a wireless data transfer session with one or more sink devices, and at least one of the sink devices can be implemented to receive data via the NULEF communication link.

Abstract: Method and apparatus are provided for detecting objects behind an opaque surface. An exemplary device for detecting objects behind an opaque surface, comprising a housing configured to hold a plurality of components of the device, one or more sensors, coupled to the housing, configured to collect sensor data of an object behind the opaque surface, a controller, residing inside the housing, configured to process the sensor data collected by the one or more sensors, at least one printed circuit board, residing inside the housing, configured to hold the controller and the plurality of components of the device, and a display configured to convey information about a detected object to a user.

Abstract: A DC-powered device controller (101), comprising a DC-power unit (102) configured to be electrically connected via a wired power line (105) to an external DC-power supply device (104), a control unit (112) connected with the DC-power unit and configured to receive from a DC-voltage monitoring unit (108) response signals indicative of a current voltage amount of the DC-power and to receive, from a mark-event timer unit (110), an extended-mark-time signal when a measured mark-event time exceeds a predetermined mark-event duration threshold, and to enable delivery of the currently received DC-power to an external electrical load unit (106) in event of either one of a) detecting that the current response signal is indicative of the currently received voltage amount falling into an operating voltage interval, and b) detecting that the extended-mark-time signal has been received.

Abstract: Methods, systems and locators for detecting faults in an insulation layer of an insulated conductor buried beneath a ground surface are described. The locator comprises a magnetometer arranged to detect a magnetic field generated by the alternating current and to generate a current signal on the basis of the detected magnetic field, and an Alternating Voltage Gradient receiver comprising a pair of probes arranged to make electrical contact with the ground surface, which is arranged to generate a voltage signal indicative of a voltage between the pair of probes. A processor is configured to substantially synchronously sample the current signal and the voltage signal. This enables improved detection of faults in the insulation layer of the insulated conductor.

Abstract: A method for testing a multicore cable including a single common shield covering plural insulated wires to identify a correspondence relation between one end portion and the other end portion of the insulated wires exposed from both ends of the multicore cable. The testing method includes allowing the common shield to have a same potential as a measurement system ground, inputting a test signal, by capacitive coupling, to an end portion of the insulated wire under test among end portions of the insulated wires exposed at one end of the multicore cable, and measuring voltages of output signals output by capacitive coupling respectively from end portions of the insulated wires exposed at the other end of the multicore cable, and identifying the other end portion of the insulated wire under test based on the measured voltages.

Abstract: Test system and methods for testing a wiring harness. In one embodiment, a remote tester of the test system includes a connector member comprising a terminal end having one or more terminals configured to mate with terminals in an electrical connector of the wiring harness, and a tester control member integrated on a back end. The tester control member includes a housing that protrudes from the back end of the connector member, test circuitry electrically coupled to the terminals of the connector member, a wireless transceiver that communicates with a central controller to receive a test program, and a battery. The test circuitry performs a test on the wiring harness based on the test program, and reports test results to the central controller.

Abstract: There is described a method for testing equipment using a test box unit and a mate-in interface having a unique mate-in interface ID, the equipment comprising a plurality of contacts. The method comprises connecting a mate-in interface to the test box unit, connecting the mate-in interface to the contacts of the equipment; selecting a mate-in interface for testing using the unique mate-in interface ID; in the mate-in interface as selected, selecting any one of the contacts for testing; and testing the any one of the contacts of the selected mate-in interface to ground and against each other one of the contacts by inputting a signal and measuring the signal through the selected mate-in interface. There can then be automatically created a list of connections for the equipment making use of the detected or otherwise obtained unique mate-in interface ID.

Abstract: A method for testing a multicore cable including not less than three insulated wires to identify a correspondence relationship between one end portion and an other end portion of the insulated wires exposed from both ends of the multicore cable. The method includes inputting a test signal, by capacitive coupling, to an end portion of the tested insulated wire among end portions of the insulated wires exposed at one end of the multicore cable, inputting a phase-inverted test signal in an opposite phase to that of the test signal, by capacitive coupling, to an end portion of the insulated wire, other than the end portion of the tested insulated wire, and measuring voltages of output signals output respectively from end portions of the insulated wires exposed at the other end of the multicore cable to identify an other end portion of the tested insulated wire based on the measured voltages.

Abstract: A mark and hold system comprising a main power supply, a mark voltage power supply and a detection current source. After detection, and optionally classification, the main power supply is disconnected from the PD and instead the PD is connected to the mark voltage power supply. The detection current source draws current through a port resistance of the PSE and the PD. The voltage across the port resistance is monitored to determine whether the PD is still connected to the port.

Abstract: A method for testing a multicore cable that includes a single common shield covering plural insulated wires. The testing method includes inputting a test signal, by capacitive coupling, to an end portion of the insulated wire under test among end portions of the insulated wires exposed at one end of the multicore cable, and measuring voltages of output signals output by capacitive coupling respectively from end portions of the insulated wires exposed at the other end of the multicore cable, and identifying the other end portion of the insulated wire under test based on the measured voltages. The voltages of output signals are measured in a state that an output variation reduction capacitive element is connected in series with a coupling capacitance generated by the capacitive coupling.

Abstract: In some embodiments, an apparatus includes a substrate having a smoothly bending surface to fit into a human hand. The substrate includes a start test switch, a first connector to couple to a first end of a cable, and a second connector to couple to a second end of the cable. The cable has an impedance. The electronic circuit is coupled to the, first connector and the second connector. In operation, the electronic circuit provides a first signal when the first end of the cable is coupled to the first connector and the second end is coupled to the second connector, the start switch is activated, and the impedance is between a minimum impedance value and a maximum impedance value. The electronic circuit provides a second signal when the first end of the cable is coupled to the first connector and the second end is coupled to the second connector, the start switch is activated, and the impedance is greater than the maximum impedance value.

Abstract: An S-parameter of an object to be measured is measured, which includes (i) three transmission lines configured such that a ternary signal is transmitted through a corresponding one of the three transmission lines and (ii) six ports as total ports included in the three transmission lines each having a pair of ports. Based on the measured S-parameter, a parameter is calculated, which shows transparent characteristics in each mode among mixed-mode S-parameters in accordance with transition patterns of signal levels on the three transmission lines.

Abstract: An Ethernet network switch is disclosed. The network switch includes multiple Ethernet ports, each port including Ethernet transceiver circuitry forming one end of an Ethernet link. The switch also includes control logic to, when the switch is connected to multiple Ethernet cables defining Ethernet links, 1) initiate a diagnostic mode of operation, 2) control at least two of the multiple Ethernet links to measure a parameter associated with alien crosstalk, and 3) configure operation parameters for the links based on the measured parameter.

Abstract: The present document describes an assembly for connecting a test unit to a wiring harness or equipment to be tested, and a method for testing using the assembly. The assembly may comprise a test box unit, a generic mate-in interface, and at least one specific mate-in interface. The generic mate-in interface is for connection to the test box unit on one end, and to the at least one specific mate-in interfaces at the other end. The mate-in interfaces are for testing different existing wiring harnesses or equipment. Each one of the generic and specific mate-in interfaces has a specific ID comprised in an ID support on the electrical path of the generic mate-in interface and the specific mate-in interface, for example, on any one of the end connectors of the interfaces or on their wiring. Information relating to the IDs of the connectors and the contact configuration of each mate-in interface is stored in a database of the test unit for identifying the appropriate test contacts that should be used for testing.

Abstract: Methods and systems for the adaptive selection of an isolation ground for a differential interface are provided. A system for adaptively selecting an isolation ground for a differential interface includes a first body having a first ground reference. The system additionally includes a second body having a second ground reference. Further, the system includes a differential interface through which the first body communicates electrical signals with the second body. Also, the system includes a common ground connection shared between the first body and second. Moreover, the system includes an adaptive isolation connection that adaptively connects the common ground connection to one of the first ground reference and the second ground reference.

Abstract: A device receives an analog voltage signal over a single physical electrical connection. The analog voltage signal can be converted into a digital value which can then be correlated to (i) an indication of a connection state of the primary device, and (ii) information about another device (or set of devices) which is connected to the device.

Abstract: Systems are provided to determine a location of an electrical fault in an electrical system of a vehicle. A test apparatus can include a control unit and a plurality of scan circuits. The control unit is configured to electrically couple the plurality of scan circuits to the electrical system and trigger the plurality of scan circuits to pass electrical signals to the electrical system. Each scan circuit is configured to detect a presence of an electrical fault in the electrical system based on an electrical signal passed. Each scan circuit provides information indicative of a location of the electrical fault in the electrical system, when detected, to the control unit.

Abstract: Connectivity between components in a system is monitored by applying a low voltage at one end of an RF cable, interpreted as a “0” logical state, and determining whether a similar voltage appears at the other end of the cable. If the cable is connected properly, the DC voltage applied at one end will appear at the other end and a proper indication is generated. If the expected voltage level does not appear at the other side, it means that RF connection was not correctly established and an alert is generated. Test systems for testing connectivity may include a first component comprising at least one port, at least one capacitor, and at least one resistor for providing high impedance. A controller provides a first logic state to the at least one port, scans multiple input ports of the system, and records a link corresponding to the applied first logic state.

Abstract: The driver system according to the invention includes an infrared receiver module and a Johnson counter. The infrared receiver module receives an infrared signal and performs filtering using a low-pass filter to convert the infrared signal into a driving signal which is transmitted to the Johnson counter. Upon receiving the driving signal, the output terminals of the Johnson counter are sequentially activated to output a control signal for shifting the operation of an electrical device from one operation state to another.

Abstract: Systems are provided to determine a location of an electrical fault in an electrical system of a vehicle. A test apparatus can include a control unit and a plurality of scan circuits. The control unit is configured to electrically couple the plurality of scan circuits to the electrical system and trigger the plurality of scan circuits to pass electrical signals to the electrical system. Each scan circuit is configured to detect a presence of an electrical fault in the electrical system based on an electrical signal passed. Each scan circuit provides information indicative of a location of the electrical fault in the electrical system, when detected, to the control unit.

Abstract: A voltage sensor and the method for compensating installation position variation thereof are disclosed. The voltage sensor may comprise a casing, two substrates, a plurality of voltage sensing units and an iterative operation unit. One side of the casing may include two grooves. The substrates may be respectively disposed in the grooves, and an accommodating space is formed between the substrates. The voltage sensing units may be disposed on the substrates to measure a plurality voltage parameters of a dual-wire power cable disposed in the accommodating space. The iterative operation unit can be disposed in the casing and connected to the voltage sensing units, wherein the iterative operation unit can perform an iterative operation process according to a compensation database and the voltage parameters for compensating the horizontal and vertical displacements occurring when installing the voltage sensor on the cable, and calculate the estimated input voltage of the cable.

Abstract: Aspects of the subject disclosure may include, for example, identifying a device coupled to a transmission medium that obstructs a propagation of guided electromagnetic waves propagating on an outer surface of the transmission medium when the device is subjected to a liquid, and applying a material to a portion of the device to mitigate the obstruction. Other embodiments are disclosed.

Abstract: A method for characterizing alien crosstalk between an aggressor link and a victim link is disclosed. The method includes operating a transmit transceiver coupled to the aggressor link in a transmit mode of operation. A receive transceiver is coupled to the victim link in a receive mode of operation. Using the receive transceiver, a parameter is measured that is associated with alien crosstalk due to transmissions from the aggressor link.

Abstract: The methods and apparatus described herein are designed and configured to allow one user to test cable continuity using a wire-configurable directional connector. The methods and apparatus may transmit a first and second voltage pulse through a first and second wire of a cable under test, respectively, having a wire-configurable directional connector attached. Both voltage pulses travel through the wire-configurable directional connector. The first voltage pulse selectively leaves at least one of the second wire and a third wire of the cable under test and the second voltage pulse selectively leaves the third wire. The methods and apparatus may store a pre-determined pattern of a returning voltage pulse specific to the cable under test, and determine a state of the first, second, and third wires in response to receiving the first and second voltage pulses.

Abstract: A method for detecting the presence of an energized e-field in a space, wherein the space includes at least one electrically conductive element disposed in the space and coupled with a controller, the method including receiving in the controller a signal from the at least one electrically conductive element, determining that an energized e-field occupies the space, and sending a signal from the controller indicative of the presence of the energized e-field in the space.

Abstract: A ground fault detection circuit is configured to detect a ground fault in a circuit or system that has more than one ground reference. In an embodiment, an electronic circuit includes a first circuit coupled to a first ground node. The first ground node is coupled to a first ground reference. The electronic circuit also includes a second circuit coupled to a second ground node. The second ground node is coupled to a second ground reference. The ground fault detection circuit is configured to detect an open circuit between the first ground node and the first ground reference or between the second ground node and the second ground reference by comparing a voltage at the first ground node to a voltage at the second ground reference or comparing a voltage at the second ground node to a voltage at the first ground reference.

Abstract: A communication cable connector includes a first connector section to be connected to one end of a communication cable including at least two or more signal lines, a second connector section to be connected to an other end of the communication cable, a first voltage applying circuit mounted to the first connector section to apply a DC voltage between any signal lines of the communication cable, and a first light emitting circuit mounted to the second connector section to emit light when the DC voltage is applied between the any signal lines of the communication cable by the first voltage applying circuit.

Abstract: There is provided a non-contact voltage measuring sensor (1) in which a detection probe (11) is configured with a leaf spring and in which, when an external force is applied, the detection probe (11) deforms winding in a direction in which a tension of the leaf spring acts.

Abstract: Described herein is a method and apparatus for measuring the potential on a modern shielded high-voltage cable such as those used in medium-voltage distribution networks. A capacitive sensor arrangement (100) is constructed on a cable (110) using pre-existing structures (114, 116, 118, 120) within the cable (110). The use of implicit guarding methods is also described that allows the use of the semiconductor layer (116) present in modern cable design to be retained and to form part of the capacitive sensor arrangement (100). Performance of the sensor arrangement (100) can also be improved using temperature compensation techniques.

Abstract: An apparatus (10) and method for monitoring power transmission, disturbances and forecasts in a power grid is disclosed. The apparatus (10) comprises a plurality of magnetic field sensors (30) or voltage sensors (50) for measuring a change in the magnetic field (35) or voltage over time at the electric power transmission line (20).

Abstract: Methods, systems and computer readable media for providing AC power over a computer network (e.g., Ethernet) are disclosed.

Abstract: The present invention provides a method and a device for detecting function of a loudspeaker module, belonging to the field of detection technology and being capable of solving the problems of noise interference, inaccurate detection result and high manpower consumption in existing function detection of the loudspeaker module. According to the method and the device for detecting the function of the loudspeaker module in the present invention, a test resistor is adopted to substitute a mode that a loudspeaker is directly connected to a test circuit, so that noise-free and automatic detection of the function of the loudspeaker module is realized.

Abstract: A wiring test device for electronics cabinets having internal signal wiring between a first section having a matrix-like arrangement of inputs and outputs and a second section having inputs and outputs is provided. The test device includes a needle adapter having a number of test points arranged in the manner of a matrix to be placed on and make contact with the inputs and outputs of the first section, and test adapter communicating with the needle adapter and having a test point to make contact with individual inputs and outputs of the second section, and a monitoring device which, for each of the inputs and outputs of the second section of the selected electronics cabinet with which contact is made, checks whether the internal signal wiring thereof corresponds to a previously stored wiring list for the electronics cabinet.

Abstract: A system and apparatus for detecting and monitoring cavitation inside a flow control device, such as a control valve, includes an acoustic emission sensor coupled to the flow control device in a manner to acquire acoustic signals caused by cavitation. A processor receives acoustic information from the acoustic emission sensor. The processor selectively identifies cavitation events from the acoustic information that meet certain predefined criteria. Cavitation levels are monitored based on at least one of a rate of cavitation events and intensity of individual cavitation events. The cavitation levels may be used to identify the presence of cavitation in the flow control device, to track accumulated cavitation in the flow control device, and/or to identify significant changes in the cavitation levels over time. This information may be used to reduce cavitation, estimate repair and maintenance, and/or monitor performance of the flow control device.

Abstract: A cable measuring device for measuring a cable of a predetermined LAN cable category wherein the cable has at least one twisted conductive pair and jacket covering the same includes a computer based device which removes tail up effect on the impedance/return loss measurement and which addresses the effects of jacket removed on the reflection test results of LAN cables.

Abstract: A test instrument provides suggested next operational step function to provide a user with assistance during testing. A display is provided to show the amount of a project that has been completed, for example as a percentage completed value. Individual test results may be saved to a ‘fix later’ list, which may be later accessed to re-test items that may not have passed on initial testing.

Abstract: A probe uses a small diameter insulated needle to accurately penetrate the jacket and thin outer semiconductor sheath of URD cable so as to capacitive couple to the high voltage center conductor and determine its energized status (live or dead) and phase attribute. A precision needle depth gauge, mechanical hard stop, and digital display ensures that the needle does not penetrate the thick center conductor insulation material and provides an indication of the center conductor voltage. The probe can be combined with either internal or external phase identification circuitry to determine the phase attribute of the URD cable.

Abstract: A method of detecting a wire break in a high voltage generating device that is configured to detect a wire breakage in a low-voltage cable is disclosed. The method of a wire break includes: detecting whether a wire break has occurred in each of the lines in accordance with a combination pattern of whether the time differential value of an IM signal value of a CW circuit obtained when an operating voltage is boosted is positive, negative, or 0, and whether the time differential value of a VM signal value obtained after the operating voltage is boosted by the CW circuit is positive, negative, or 0; and identifying which of the lines is broken.

Abstract: A method of detecting the states of power cables in an inverter system supplying power generated from an inverter to a motor by using three phase power cables is provided. The method includes: calculating the location of a current space vector for a first period when the first period arrives; using the calculated location of the current space vector for the first period to calculate the predicted location of the current space vector for a second period; calculating the actual location of the current space vector for the second period when the second period arrives; comparing the calculated predicted location with the actual location; and detecting the states of the three phase power cables according to a comparison result.

Abstract: An apparatus for testing a cable or other capacitive load object with a VLF alternating cosine square, rectangular or trapezoidal test voltage, includes one or two DC voltage sources and a switching arrangement controlled by a measuring and control unit, to produce the test voltage with alternating switched polarity. The apparatus further includes a choke coil serving as an energy store, which is controlled by a switching element to be activated if the voltage/time slope arising during the switch-over after a respective half-wave of the test voltage falls below a defined threshold value.

Abstract: An antenna system for electromagnetic compliance testing within a frequency range includes a driven element mounted on a boom and including opposed first and second length-adjustable conductors. A length-adjustable passive element is mounted on the boom and spaced apart from the driven element and including opposed third and fourth length-adjustable conductors. An RF input connector is coupled between a feed path to a feed end of each length-adjustable conductors in the driven element. The feed path is configured to minimize stray reactances and stub effects within the frequency range.

Abstract: A method of detecting oscillations is disclosed. An input signal is received. A time delay is added to the input signal. A coherence between the input signal and the time-delayed input signal is estimated. The coherence is greater than a predetermined threshold. The time delay may be greater than or equal to one sampling interval.

Abstract: A method includes coupling an electrical cable, including multiple wires, to circuitry including a resistor bank connected to the wires. A gain of the circuitry is measured including the cable. Based on the measured gain, one or more of the wires in the cable that are defective are identified. An indication of the defective wires is output.