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9021086 |
System and method for network management
System and methods for inferring network topology are described, including a method comprising determining a normalized transmit power of a first device, identifying a second device based upon a... |
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8917097 |
Method and system for detecting and locating by reflectometry electrical faults in metal structures
A method for detecting and locating by reflectometry electrical faults in a metal structure includes injecting a probe signal into an electrical propagation line held at a substantially constant... |
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8896318 |
Electrical interconnect status monitoring system
Disclosed are advances in the arts with novel methods and apparatus for detecting faulty connections in an electrical system. Exemplary preferred embodiments include basic, ASIC, AC, DC, and RF... |
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8829917 |
Cable tester
A physical layer device configured to interface with a plurality of pairs of wires. The physical layer device includes a cable test module configured to transmit a pulse over the plurality of... |
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8823534 |
Electricity meter tampering detection
Tampering with an electricity network is detected from an electricity meter by transmitting a probe signal over at least part of the electricity network (12) from a signal source (106a) in the... |
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8803069 |
Electro-optical radiation collector for arc flash detection
An electro-optical (EO) radiation collector for collecting and/or transmitting EO radiation (which may include EO radiation in the visible wavelengths) for transmission to an EO sensor. The EO... |
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8670335 |
Reduced power transmission
Reduced power transmission is described. In embodiments, networked devices communicate via a network connection. A characteristic of the network connection between the networked devices can be... |
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8620605 |
Method for improving fault detection and positioning precision using reflectometry in a wired electrical network
A method for detecting and determining a position of faults using reflectometry in a wired electrical network including: injecting a test signal e(t) into a cable in the electrical network, a... |
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8575945 |
Subsea line monitoring device
A subsea line monitoring device includes a diagnostic unit adapted to be deployed, in use, in a subsea location and having a first connector, the diagnostic unit being operable, in use, to output... |
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8564302 |
Test instruments for pulse TDR, step TDR and transmission analysis
The test instrument is used to perform both time domain reflectometry (TDR) and analysis of transmission signals on a line under test. Further, the test instrument provides for both pulse TDR and... |
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8558552 |
Home network characterization method and system
A method of characterizing a wiring network is implemented in a system which includes a test controller and at least two probes. On commands from the test controller, at least one of the probes... |
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8552739 |
Electronic device and method for correcting time-domain reflectometers
In an electronic device and a method of correcting time-domain reflectometers, two channels of a time-domain reflectometer are connected to a corrector using cables, and the two channels are... |
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8548760 |
Detecting nonlinearity in a cable plant and determining a cable length to a source of the nonlinearity
An apparatus and a method for detecting a nonlinearity in a cable plant and for determining cable length to a source of the nonlinearity are disclosed. Upstream signal peaks are detected by... |
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8461848 |
Cable diagnostics for Base-T systems
An apparatus and method for cable diagnostics is disclosed for deployment as part of an Ethernet communication system to conduct diagnostics. The system transmits one or more pulses which are... |
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8461847 |
Electrical interconnect status monitoring system
Disclosed are advances in the arts with novel methods and apparatus for detecting faulty connections in an electrical system. Exemplary preferred embodiments include basic, ASIC, AC, DC, and RF... |
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8416699 |
Cable tester
A physical layer device for a network interface, in which the physical layer device includes a cable-test module and a data processing module. The physical layer module is configured to... |
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8295163 |
Reassigning signals to cable channels
Devices, systems, methods, and other embodiments associated assigning signals to cable channels are described. One example device includes a networking device that includes a transceiver to... |
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8279425 |
Frequency domain reflectometry (FDR) lethality assessment method and system for determining impact point and damage propagation in detection surface
A system and method for performing lethality assessment utilizes frequency domain reflectometry (FDR) to determine impact point and damage propagation faults in a detection surface. The detection... |
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8269505 |
Locating short circuits in printed circuit boards
One embodiment provides a method of locating a short circuit in a printed circuit board. Test signals may be injected at different test points on the circuit board. The distance between each test... |
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8242785 |
System and method for detecting anomalies along telecommunication lines
An anomaly detection system comprises an echo canceler and anomaly detection logic. The echo canceler has a plurality of taps respectively associated with a plurality of tap coefficients. The... |
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8179144 |
Cable tester
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... |
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8161516 |
Fraud detection in a cable television
One or more of a topology location test and a distance test are applied to determine if a CPE device has moved in a cable plant. An indication of service fraud is provided if the CPE topology... |
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8022711 |
Wire fault locating in distributed power systems
An electrical fault locating system for distributing power from an input to a plurality of output channels provides fault detection and locating for each of the plurality of output channels. Each... |
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8013614 |
System and method for enhanced accuracy in cable diagnostics of cable length
A system and method for enhanced accuracy in cable diagnostics of cable length. Conventional cable diagnostics such as time domain reflectometry can be used to determine cable length. This... |
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7994797 |
Implementing a coded time domain transmission distance meter
A method and circuit for implementing a coded time domain transmission distance meter, and a design structure on which the subject circuit resides are provided. A first transmitter module... |
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7986147 |
Fast cable tester
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... |
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7977950 |
Time-domain reflectometer
The present invention provides a time domain reflectometer for testing an electrical cable. The time domain reflectometer includes a test signal generator, at least one line feed resistor,... |
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7977951 |
Methods and apparatus for measuring a length of a cable
A first physical layer (PHY) device includes an auto-negotiation module, a first cable-length measuring module, and a first control module. The auto-negotiation module exchanges data rates of the... |
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7979224 |
Configurable voltage regulator
A configurable semiconductor device includes at least one select pin configured to connect to one of a plurality of impedances. The impedances are external to the configurable semiconductor device... |
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7979219 |
Transmission medium testing apparatus and method
The invention provides a method for testing a transmission medium used in a full-duplex communication system comprising an endpoint that comprises a transmitting end (TX) and a receiving end (RX);... |
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7973536 |
Traveling wave based relay protection
An apparatus includes at least one Rogowski coil and a processor. The at least one Rogowski coil is positioned within an electrical power distribution network to detect a first traveling wave... |
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7940056 |
Time-domain reflectometry
The present invention provides a method of time domain reflectometry including transmitting a test signal along a cable under test from one end and sensing and recording a reflected signal from... |
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7924023 |
Method and apparatus for measuring data rates
A method, computer readable storage medium and apparatus for measuring data rates is disclosed. A method that incorporates the teachings of the present disclosure may include, for example,... |
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7906973 |
Cable tester
A physical layer module (PHY) of a network device includes a control module and a cable-test module. The control module selectively generates a cable-test enable signal to test a cable including... |
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7893696 |
Pulse circuit using a transmission line
A circuit is provided wherein a test pulse is provided to a device under test. A module allows the test pulse to pass through to the device under test. The module blocks a reflected pulse from... |
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7893695 |
Apparatus, method, and computer program for obtaining a time-domain-reflection response-information
An apparatus for obtaining a time-domain-reflection response-information has a signal driver adapted to apply two pulses of different pulse lengths to a TDR port in order to excite a first TDR... |
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7884615 |
Cable tester
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... |
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7868621 |
Power line communication based aircraft power distribution system with real time wiring integrity monitoring capability
A power line communication-based aircraft power distribution system may allow for both power line communication (PLC) technology and spread spectrum time domain reflectometry (SSTDR) technology to... |
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7847561 |
Network device, network connection detector and detection method thereof
A network device, a network connection detector and a detection method thereof are disclosed. The network device includes a socket, a waveform generator and a reflected wave detector. The waveform... |
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7839770 |
Branch element for operation in a communication network, network and method for operating the branch element
A branch element is specified for use in a communication network, whereby in the interplay of two branch elements designed according to the invention, a cleared fault in a communication medium... |
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7808247 |
Fast cable tester
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... |
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7808249 |
Methods and apparatus for measuring a length of a cable
A physical layer (PHY) device of a network device includes a first module, a first cable-length measuring (CLM) module, and a first control module. The first module determines whether a remote PHY... |
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7808226 |
Line tracing method and apparatus utilizing non-linear junction detecting locator probe
A method, device, and apparatus for tracing a conductive line and locating any concealed surveillance devices coupled to the line uses a signal generator to produce a test signal having a... |
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7788053 |
Configurable voltage regulator
A configurable semiconductor has a device characteristic that is controllable as a function of at least one external impedance. A measurement circuit measures an electrical characteristic of the... |
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7777496 |
Remote sensor system for monitoring the condition of earthen structure and method of its use
A system and associated method permit remote monitoring of subsurface structure for purposes of early detection and location of hidden anomalies, e.g., water seepage in levees. Anomalies may be... |
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7768251 |
Superconducting coil testing
A method of testing a superconducting coil path formed in a layer of superconducting material. The material is provided on a former (6) having a substantially curved surface. The method comprises... |
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7683628 |
Cable tester
A physical layer device includes a cable test module that transmits a test pulse on a cable, measures a reflection amplitude, calculates a cable length, and determines a cable status based on the... |
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7679371 |
Advanced time domain reflection cable testing
A cable testing system that tests cable includes a pulse generation module that transmits a first pulse on a first communications channel of the cable. A sampling module waits a predetermined time... |
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7652483 |
Network device, network connection detector and detection method thereof
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... |
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7652482 |
Network analyzer, network analyzing method, automatic corrector, correcting method, program, and recording medium
The error of a measurement system can be corrected even if the frequency of an input signal of a device under test is different from that of the output signal. A signal output acquiring section... |