Abstract: A network device including a physical layer (PHY) device and an autonegotiation module. The PHY device is configured to interface with N cable pairs, where N is greater than 1. The PHY device includes a cable test module configured to diagnose a short circuit in one of the N cable pairs. The autonegotiation module is configured to i) selectively perform autonegotiation to establish a link with a link partner at one of a first link speed and a second link speed that is lower than the first link speed, and ii) select between the first link speed and the second link speed in response to the cable test module diagnosing the short circuit.

Abstract: An IC package includes an integrated circuit for transmitting and receiving a pair of differential signals composed of a signal having positive polarity and a signal having negative polarity, a first signal terminal for transmitting the signal having positive polarity, a second signal terminal for transmitting the signal having negative polarity, and a third terminal arranged between the first signal terminal and the second signal terminal. The first and second terminals are electrically connected to the integrated circuit, and the third terminal is not electrically connected to the integrated circuit.

Abstract: Cell voltages within a battery pack and a voltage delivered to a load or drive system, along with a current delivered to the system, are monitored and used to detect a possible abnormal condition of a wiring harness.

Abstract: A method for adapting the signal transmission between two electronic devices (1, 2) that are connected to each other via a physical interface and that each have a transmitter (8a, 8b) and a receiver (7a, 7b), wherein analog signals are transmitted from the transmitter (8a, 8b) of one device (1, 2) along a transmission path (9a, 9b) to the receiver (7a, 7b) of the other device (1, 2). Known scattering parameters (10a, 10b, 10c, 11d) for describing the electromagnetic wave propagation in the transmission path (9a, 9b) between the receiver (7a, 7b) of the first device (1, 2) and the transmitter (8a, 8b) of the second device (1, 2) are retrieved by the first device (1, 2), transmitted to the second device (1, 2), and parameters of the transmitter (8a, 8b) in the second device (1, 2) are adapted with reference to a high-frequency description of the transmission path (9a, 9b) as a function of all of the scattering parameters (10a to 10d, 11a to 11d) known to the two devices.

Abstract: Disclosed herein is a Fourier transform-based phasor estimation method and apparatus capable of eliminating the influence of exponentially decaying DC offsets. According to a Fourier transform-based phasor estimation method according to an embodiment of the present invention, an input signal is sampled, and samples of one-cycle data of the input signal are separated into at least two sample groups. A Discrete Fourier Transform (DFT) is performed on each of the sample groups. A DC offset included in the input signal is calculated on a basis of results of the DFT on each of the sample groups, and an error caused by the DC offset is calculated using the calculated DC offset. A phasor of a fundamental frequency component included in the input signal is estimated by eliminating the calculated error, caused by the DC offset, from the results of the DFT on the input signal.

Abstract: An electronic apparatus to allow data to be sent and received between a master unit and a slave unit through a peripheral component interconnect (PCI) bus is provided. Each of the master unit and the slave unit comprises a data interface having a plurality of pins through which request data is sent to and received from an external device, and additional pins through which size information of the request data is sent to and received from the external device. If the master unit sends address information and the size information of the request data to the slave unit through the plurality of pins and the additional pins, the slave unit processes data of an address corresponding to the received address information according to size corresponding to the size information.

Abstract: A powered device can provide information to another device (such as a power sourcing equipment) via a powered communications interface when operating power is not being provided to the powered device via the powered communications interface, enabling a variety of functions and applications. Relatively low voltages and currents of the type used for detection and classification of the powered device are used in an extended way to achieve the communications. The power sourcing equipment performs additional detections and/or classifications, and the powered device responds by presenting corresponding signatures or identity networks that convey additional information beyond the presence and power requirements of the powered device. As an example, a powered device can present a sequence of signatures signifying that power should be applied to the powered device notwithstanding an active policy of withholding power in furtherance of a power conservation scheme.

Abstract: Methods and systems for cable inspection operate by generating a relative motion between an electrical cable including multiple wires and a magnetic field. An electrical signal induced in the wires is measured responsively to the magnetic field. A variation in the electrical signal is sensed due to the relative motion. In response to the variation, a defect is detected in the electrical cable.

Abstract: Methods and systems for detecting changes in currents are disclosed, including: dividing a main current into two or more subcurrents, combining a first magnetic flux of a first subcurrent of the two or more of the subcurrents with another magnetic flux of another current to generate a combined magnetic flux, and sensing the combined magnetic flux to determine relative changes between the first subcurrent and the other current.

Abstract: A material medium, such as an optical fiber or electrical cable, is commonly used to carry services, such as telecommunications or energy service. The current invention identifies the following problems which may be encountered when monitoring a material medium. They are: (1) requiring a time and labor intensive investigation to find a fault, (2) needing a significant change in a current material medium infrastructure to support a monitoring effort, or (3) reducing available bandwidth in a material medium due to a monitoring device intruding into the material medium to send data. These problems are solved, in accordance with a feature of the current invention, by monitoring a material medium with at least one diagnostic sensor, and using an electromagnetic (EM) signal, such as radio frequency (RF), signal to wirelessly transmit the sensor data. The diagnostic sensor may measure the operational health of the material medium, or may measure local environmental conditions around the material medium.

Abstract: The invention relates to a method and a device for analyzing electric cables in a network, for the detection and location of defects in networks comprising at least one junction from which there depart N secondary cable stretches. The method includes interposing in the network, in series at the input of each the secondary stretches (T2, T3) starting from the junction (A), a respective bidirectional passive filter (FR2,FR3) able to cut off a frequency band associated with this stretch. The filters all allow through the useful frequencies for the normal operation of the network. A pulsed test is applied to the input of the network signal modulated by N different carrier frequencies each situated in one of the N frequency bands of the filters. The temporal position of test signal spikes reflected for each of the N frequencies is detected, and deducing therefrom the position of possible defects on a stretch of cable of the network.

Abstract: In order to make it possible to detect a fault location, safely, reliably and with a high response sensitivity, in a braided wire which has a plurality of individual wires, an electric current is passed through the braided wire and the magnetic field which is formed as a result of the braided wire through which current flows is detected by a sensor and is evaluated. A fault location is deduced if the measured magnetic field has an oscillation whose length is a multiple of a lay length of the braided wire, and in particular corresponds to the lay length. The method is also used in particular for non-destructive testing of the quality of a contact connection of a contact element to the braided wire.

Abstract: A device and method for dynamically determining an impedance of a network is disclosed. The device includes at least a processing system for measuring a network voltage and network current when said network is determined to be in a first state, measuring a network voltage when said network is determined to be in a second state, estimating said impedance value dependent upon said measured voltages and current, adapting said estimated impedance based on at least one prior impedance value and storing at least said adapted impedance.

Abstract: A system and method for using a physical layer device to locate a thermal signature in a cable plant for diagnostic, enhanced, and higher power applications. Cable heating in specific sections of a network cable is detected through an automatic identification of a thermal signature in electrical measurements of a network cable. The correlation of the thermal signature to a specific section of the network cable enables network personnel to locate hot spots in the network cable with ease.

Abstract: An electronic identification device for identifying, among conductors of a wiring system including multiple conductors, at least one conductor that is series-connected to a magnetically controlled switch. The device comprises a test connector having pins that are connected to respective conductors to be tested, a microcontroller commanding, in a predetermined order and in two steps, the sending of a test signal to each of the pins of the test connector, and conducting measurements and comparisons for the identification of the conductors, a signal source that is connected both to the pins of the test connector and to the microcontroller, a magnetic field source, and a display for the display of the identification.

Abstract: A trigger mechanism including sensing electronics, a power source and a length of bifilar wire. The bifilar wire has two electrically conductive filaments separated by an insulator, with a first end in electrical connection with the sensing electronics and the power source and a second end that is free. A circuit can be created by fusing together the two filaments in a section of the bifilar wire. The sensing electronics are configured to monitor the status of a circuit created between the bifilar wire, sensing electronics and power source and to output a signal when the circuit is broken.

Abstract: A modified Series A universal serial bus (USB) receptacle connector is equipped with the functionality to allow the electronic system in which it resides to be configured either as a host device or a peripheral device. The modified USB Series A receptacle connector, according to one embodiment of the invention may include a mechanism such as an additional pin or a mechanical switch to detect the presence of a standard USB Series A plug being inserted into it. Upon detection of a plug, an algorithm may allow the system to determine whether it is to act as a host device or a peripheral device and to determine which device supplies power.

Abstract: A system includes a first electrical component, a second electrical component, and at least two cables connecting the first and second electrical components. Time varying signals are transmitted through the cables with at least one of the cables carrying an injected DC signal. The system associates the cable carrying the DC signal with a predetermined time varying signal and is capable of electronically switching the routes of the time varying signals if the cables are incorrectly physically attached to the first and second electrical components.

Abstract: A physical layer (PHY) device including a first transmitter, a first analog-to-digital converter (ADC) module, and a control module. The first transmitter is configured to transmit a first pulse on a first conductor of a first pair of conductors of a cable. The first ADC module is configured to generate a first set of outputs, in response to the transmission of the first pulse, by sampling an input from a second conductor of the first pair of conductors a plurality of times at a predetermined time interval. The control module is configured to determine a first distance from the PHY device to (i) an open-circuit, (ii) a short-circuit, or (iii) a termination of the first pair of conductors based on the first set of outputs.

Abstract: An apparatus includes power circuitry and hazard detection circuitry connectable to a multi-conductor cable. The power circuitry transfers electrical power from a power-sourcing equipment (PSE) to a powered device (PD) over the multi-conductor cable. The hazard detection circuitry senses an electrical characteristic of the multi-conductor cable and generates a detection signal indicating whether a potentially hazardous abnormal operating condition exists in the multi-conductor cable based on the sensed electrical characteristic. Examples include short-circuit detection circuitry which detects a hazard-producing short-circuit connection between sets of conductors that can cause a “stacking” or additive combining of PSE output voltages, and hot-cable detection circuitry detecting the presence of full operating voltage on the cable under abnormal conditions.

Abstract: A system and method for determining the status of each monitored conductor, and optionally indicating peak current or other parameters are provided. Wireless self-powered sensor elements can eliminate much of the wiring required in traditional systems, and greatly ease the installation in difficult underground locations.

Abstract: An Ethernet cable for use with an Ethernet test-set which allows a single connection to an Ethernet port of a network element while maintaining individual connections to two separate ports on the test-set, thereby allowing a successful test of a signal path in an Ethernet network to be conducted when the far-end of the signal path is a single Ethernet cable port having its transmit and receive pins interconnected. The far-end port interconnections cause a test signal which has traveled to the far-end port to be returned to the test-set and, in view of the cable configuration, to be received in a test-set port other than the port from which the signal test signal originated. Test-sets do not permit test signals to be returned to ports from which they originate. In an embodiment, two signal paths can be simultaneously tested with the same test-kit.

Abstract: Disclosed are systems and methods for monitoring an electrical flat wire. An appropriate safety device is utilized to monitor the electrical flat wire. The safety device includes a line side input configured to connect a line side power source and receive an electrical power signal from the line side power source. Additionally, the safety device includes a flat wire connection configured to connect to an electrical flat wire. The safety device further includes at least one relay configured to control the communication of the electrical power signal onto the electrical flat wire. The safety device also includes a control unit configured to test the electrical flat wire for at least one of miswires, wire faults, or abnormal conditions and, based at least in part on the results of the testing, to control the actuation of the at least one relay.

Abstract: An antenna cable break detector used with a construction machine wireless communication apparatus to detect a break in an antenna cable. The antenna cable 4 includes a central wire 6 and an armor wire 7 that is positioned concentrically outside the central wire. One end of the central wire and the armor wire is connected to a communication device. The other end of the central wire is connected to an antenna 3. The other end of the armor wire is grounded. The antenna cable break detector has a direct current shutoff device that is connected to the armor wire to shut off the flow of direct current 15 from the armor wire to the communication device. There is also a current shutoff detection device that is connected to the armor wire to detect the shutoff of the flow of a direct current to the armor wire.

Abstract: A portable electronic device with projection function including a host, a projection module, a signal line, a first adjusting leg and a second adjusting leg is provided. The host has a chamber at its side. The projection module is for outputting an image light beam. The projection module is connected to the host through the signal line. The first adjusting leg is pivoted to the projection module. The second adjusting leg is pivoted to the projection module, wherein the first adjusting leg and the second adjusting leg can be stored into the chamber with the projection module after pivoting.

Abstract: An automatic multi-cable continuity tester. The multi-conductor electrical continuity tester includes a controller that is configured to generate a first serial stream of input test signals. The first serial stream of input test signals includes a plurality of signals equal in number to a plurality of conductors in a cable. A data input module is configured to convert the first serial stream of input test signals into a first parallel stream of test signals. A data output module is configured to receive and convert the first parallel stream of test signals to a first serial stream of output test signals.

Abstract: A network interface includes a physical layer (PHY) device that provides an interface to a cable. The PHY device includes an autonegotiation module that selectively performs autonegotiation to establish a link with a link partner based on link parameters and a cable test module that performs a cable test before the autonegotiation begins, that determines a cable performance parameter during the cable test, and that compares the cable performance parameter to a predetermined threshold. The autonegotiation module selects at least one of the link parameters based on the comparison.

Abstract: A method of prioritizing anomalies in a linear conductor buried under a ground surface includes the steps of obtaining prioritization values for a plurality of anomalies along a linear conductor, and ranking the prioritization values according to magnitude. For each anomaly, a prioritization value is obtained by: locating an anomaly; for each anomaly, determining a current, a depth of cover, and a voltage gradient using spaced voltage probes; using the depth of cover and the voltage gradient, calculating an effective probe spacing of the first and second voltage probes relative to the anomaly on the conductor; and determining the prioritization value of the anomaly based on a linear relationship between the voltage gradient and the product of the current and the effective probe spacing.

Abstract: A modified Series A universal serial bus (USB) receptacle connector is equipped with the functionality to allow the electronic system in which it resides to be configured either as a host device or a peripheral device. The modified USB Series A receptacle connector, according to one embodiment of the invention may include a mechanism such as an additional pin or a mechanical switch to detect the presence of a standard USB Series A plug being inserted into it. Upon detection of a plug, an algorithm may allow the system to determine whether it is to act as a host device or a peripheral device and to determine which device supplies power.

Abstract: A repeater, useable for connecting switches in a data communication network, is provided in a distributed and/or modular fashion. The repeater includes a plurality of separate and distinct components or modules connected to or at least partially housed in, the various switches which the repeater modules couple. Preferably, the repeater autodetects and/or autoconfigures some or all aspects of repeater operations, such as detecting and/or configuring appropriate full/half-duplex mode operation or detecting and/or configuring in response to appropriate or approved cable-type connections. The distributed and/or modular repeater facilitates accommodating various switching or repeater needs as a network grows or contracts.

Abstract: A system and method for wireharness testing includes at least one probe attachable to a connector of a wireharness, the at least one probe in wireless communication with a controller to identify a potential lack of continuity in the wireharness therebetween.

Abstract: The invention relates to a method for testing a communication connection in a communication network in an aircraft with at least a first controller, a second controller and a third controller.

Abstract: Cell voltages within a battery pack and a voltage delivered to a load or drive system, along with a current delivered to the system, are monitored and used to detect a possible abnormal condition of a wiring harness.

Abstract: A physical layer (PHY) device of a network device includes a signal generator module that generates a first test signal and that transmits the first test signal on a first conductor of a first pair of a cable at time T1, an analog-to-digital converter (ADC) module that has an input that communicates with a second conductor of the cable and an output that generates first S outputs at times (T1+(S*t)), where S is greater than 1, and t>0, and a control module that determines a distance from the PHY to one of an open-circuit and short-circuit of the first pair based on the first S outputs.

Abstract: A system and method for using a physical layer device to locate a thermal signature in a cable plant for diagnostic, enhanced, and higher power applications. Cable heating in specific sections of a network cable is detected through an automatic identification of a thermal signature in electrical measurements of a network cable. The correlation of the thermal signature to a specific section of the network cable enables network personnel to locate hot spots in the network cable with ease.

Abstract: A cable detection apparatus includes; a plurality of conductors which transmit signal information, a detection control circuit operably connected to a first conductor of the plurality of conductors, wherein the detection control circuit outputs an output signal as a first detection signal when a predetermined signal level is detected from the first conductor and outputs a second detection signal when the predetermined signal level is not detected from the first conductor, and a multiplexer operably connected to the detection control circuit which receives one of the first and second detection signals and selects between a digital signal input and an analog signal input based on the output signal of the detection control circuit and outputs the selected signal input to a conductor of the plurality of conductors.

Abstract: Methods and systems for cable inspection operate by generating a relative motion between an electrical cable including multiple wires and a magnetic field. An electrical signal induced in the wires is measured responsively to the magnetic field. A variation in the electrical signal is sensed due to the relative motion. In response to the variation, a defect is detected in the electrical cable.

Abstract: A system and method for using a physical layer device to locate a thermal signature in a cable plant for diagnostic, enhanced, and higher power applications. Cable heating in specific sections of a network cable is detected through an automatic identification of a thermal signature in electrical measurements of a network cable. The correlation of the thermal signature to a specific section of the network cable enables network personnel to locate hot spots in the network cable with ease.

Abstract: The present document describes a system for offline testing of an installed wiring harness, comprising: at least a first and a second testing module, having: a communication module for receiving test specifications and for sending test measurements; testing equipment for generating the test measurements from the test specifications; each of the first and second testing modules being adapted for connection at a connection point in the wiring harness; a central network management module, having: a communication module for providing the test specifications to the testing modules and for receiving the test measurements; and a test management module for controlling the testing modules.

Abstract: A port width module operating in association with SAS controllers determines the operational state of communication across an SAS cable by comparing the number of links at opposing controllers that are capable of supporting communication with the number of links in DWord synchronization. For example, an information handling system capable of communication of four links at an SAS connector communicates in a normal state across two links where the opposing device is a switch that supports only two links at an SAS connector. An LED at the information handling system indicates normal operations with two links in DWord synchronization by receiving the port width of the opposing device, retrieving its own port width, and comparing the port widths with the number of links in DWord synchronization.

Abstract: A cable fault detection component (168) receives input data indicative of a fault in an electrical power system. The component (168) analyzes the input data to determine if the fault is indicative of a self-clearing cable fault and generates corresponding output data (276). In one implementation, the cable fault detection component (168) is implemented as a software module which operates on a computer (105) of a substation intelligence system (104).

Abstract: An apparatus includes power circuitry and hazard detection circuitry connectible to a multi-conductor cable. The power circuitry transfers electrical power from a power-sourcing equipment (PSE) to a powered device (PD) over the multi-conductor cable. The hazard detection circuitry senses an electrical characteristic of the multi-conductor cable and generates a detection signal indicating whether a potentially hazardous abnormal operating condition exists in the multi-conductor cable based on the sensed electrical characteristic. Examples include short-circuit detection circuitry which detects a hazard-producing short-circuit connection between sets of conductors that can cause a “stacking” or additive combining of PSE output voltages, and hot-cable detection circuitry detecting the presence of full operating voltage on the cable under abnormal conditions.

Abstract: The present disclosure relates to a system and method for analyzing a superconducting wire. A method in accordance with at least one embodiment described herein may include performing a voltage/current (VI) test for each of a plurality of portions of superconducting wire. The VI test may include determining a plurality of VI data points for each of the plurality of portions of superconducting wire at a first VI datapoint of about (Ic (critical current), Ec (critical electric field)) and at a second VI datapoint of about (Ix, Ex). Ex may be at least 10 times Ec and Ix may be approximately equal to the current resulting at that voltage drop. The method may further include analyzing the plurality of VI data points for each portion of superconducting wire to determine if one or more of the portions of superconducting wire are defective. Of course, numerous other embodiments are also within the scope of the present disclosure.

Abstract: A network device, a network connection detector and a detection method thereof are disclosed. The network device comprises a socket, a waveform generator and a reflected wave detector. The waveform generator sends a first test wave to at least a first contact of a plurality of contacts of a socket and then the reflected wave detector detects a first reflected wave that is corresponding to the first test wave and is reflected from the first contact. Thus a first control signal is generated according to detection result of the first reflected wave.

Abstract: A system and method for detecting an arc of a medium voltage power line, such as an underground power line cable, is provided. In one embodiment the method comprises receiving voltage measurement data of the alternating voltage of the medium voltage power line, receiving current measurement data of the current of the medium voltage power line, detecting a current surge based on received current measurement data and upon detecting the current surge, processing the received voltage measurement data to determine whether the current surge initiated during a peak of the alternating voltage. In addition, the method may comprise transmitting a notification of the concurrent current surge. The transmission may be over the medium voltage power line, wirelessly, via fiber, via coaxial cable, or other suitable method. The current surge detection process may also comprise determining that the current surge lasts for less than a predetermined duration.

Abstract: A method and computer program product for detecting faults in cables. The invention comprises receiving a first reflected signal; comparing the first reflected signal amplified with a first predetermined receiver gain setting with a first threshold; if the value of the amplified first reflected signal is greater than the value of the first threshold, then terminating detecting; if the value of the amplified first reflected signal is not greater than the value of the first threshold, then comparing a second reflected signal amplified with a second predetermined gain setting different from the first gain setting with a second threshold.

Abstract: A method and apparatus for detecting faults in cables. The invention comprises computing a plurality of thresholds representing a corresponding plurality of values of reflections in the cable; comparing a received reflection to a given threshold; if the received reflection value is greater than the given threshold value, then determining the location of the cable fault; and if the received reflection is not greater than the given threshold value, then taking no further action.

Abstract: The present invention relates to a broken lead testing device for determining whether a lead in a balanced lead pair of a datacom circuit is broken or faulty. Terminated leads are subjected to a phase difference and/or a voltage difference test, while unterminated leads are subjected to a current injection test.

Abstract: A method and apparatus for detecting faults in cables. The method and apparatus comprise receiving a reflected signal; multiplying an estimation of the reflected signal from an echo canceller by a predetermined gain factor; subtracting the value obtained as a result of the multiplication from the received reflected signal; and generating an error signal to adapt the echo canceller tap weight to match the real received reflected signal.

Abstract: A Localizer cable fault analyzer that memorizes which antenna in a Localizer antenna array caused a fault. The Localizer equipment monitors the antenna transmit and monitor cables for continuity using a DC voltage. The present invention senses the voltage drop on the antenna circuit when a fault occurs and causes an indicator device to signal the presence of the fault in that particular antenna circuit. The indicator device continues to signal the presence of a fault until a reset switch is activated.