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| Number | Title | Issue Date |
| 8058880 | Calibrated two port passive intermodulation (PIM) distance to fault analyzer A PIM measurement circuit enables making forward and reverse PIM measurements on any 1 port (reflection) or 2 port (transmission) device with the ability to determine in distance where individual PIM impairments are located as well as their magnitude. The PIM measur... | 11/15/2011 |
| 8035409 | System and method implementing short-pulse propagation technique on production-level boards with incremental accuracy and productivity levels A system and method for performing a test for characterizing high frequency operation of PCB boards. More particularly, a system and methodology is provided to implement a time-domain short pulse propagation (SPP) technique on the production line, on large, multi-la... | 10/11/2011 |
| 7924020 | Free-state modal frequency response testing An apparatus and associated method is provided for suspending a test object in a gravitational field from a support member, exciting the test object by noncontactingly engaging it with a predetermined waveform force, and characterizing the test object qualitatively ... | 04/12/2011 |
| 7619418 | Magnetic flowmeter output verification A magnetic flowmeter transmitter includes a flowtube and measurement circuitry which provides an output related to flow through the flowtube. Output circuitry, such as analog and pulse output circuitry, provides transmitter output(s) related to flow through the flow... | 11/17/2009 |
| 7501831 | Process for the detection of a malfunction in a device for wire sawing and device for practicing said process The invention relates to a process for the detection of malfunctions, in particular the detection of breakage of a wire in a wire sawing device. The process consists in applying an alternating signal to the layer of wires (4) of the sawing device and measurin... | 03/10/2009 |
| 7443232 | Active load arrangement An active load arrangement is used to provide proper output load to an object TO under test. The arrangement Z comprises a voltage_controlled transistor MOSFET having a source S, a gate G and a drain D. The drain D is associated with the gate G and connected to an a... | 10/28/2008 |
| 7417438 | Battery voltage measurement apparatus A voltage measurement circuit includes a plurality of voltage input terminals that are supplied with voltage outputted by secondary batteries via voltage measurement lines, a plurality of voltage sensors connected between each of the plurality of voltage input termi... | 08/26/2008 |
| 7391218 | Method and apparatus for generalized arc fault detection A method and an apparatus detect series and/or parallel arc faults in AC and DC systems. The method according to one embodiment inputs an AC current signal; extracts a fundamental component of the AC current signal and monitoring an amplitude variation profile for t... | 06/24/2008 |
| 7372279 | Power generation unit condition monitor using frequency profile analysis A power generator unit condition monitoring system can receive a frequency profile generated by a frequency generating component and can transmit the received frequency to a frequency profile analyzer. The frequency profile analyzer analyzes the transmitted frequenc... | 05/13/2008 |
| 7342400 | Method and apparatus for measuring employing main and remote units A test instrument employs main and remote test units at respective ends of a cable under test. The units operate in an active or passive measurement mode, wherein one of the units begins as the active unit, applying test signals to the cable under test to make a set... | 03/11/2008 |
| 7337079 | Time-frequency domain reflectometry apparatus and method An apparatus and method for high-resolution reflectometry that operates simultaneously in both the time and frequency domains, utilizing time-frequency signal analysis and a chirp signal multiplied by a Gaussian time envelope. The Gaussian envelope provides time loc... | 02/26/2008 |
| 7315974 | Method for detecting faults in electronic devices, based on quiescent current measurements The present invention is related to a method for testing a micro-electronic device, by applying a plurality of test vectors to said device, and measuring for each test vector, the quiescent supply current IDDQ, to said device, wherein each IDDQ | 01/01/2008 |
| 7302379 | DSL system estimation and parameter recommendation Estimates of a communication system configuration, such as a DSL system, are based on operational data collected from a network element management system, protocol, users and/or the like. The operational data collected from the system can include performance-charact... | 11/27/2007 |
| 7285961 | Insulation degradation diagnostic device An insulation degradation diagnostic device (1a) comprises a current transformer (7a), a first amplifier (15), a first high-pass filter (17), a low-pass filter (19), a second amplifier (20), a second high-pass ... | 10/23/2007 |
| 7282924 | Computerized electricity system having an arc fault detecting sub-system A computerized electricity system for connecting loads to a power source, including: (a) an arc fault detecting sub-system having at least one module including: (i) a relay unit, electrically associated with a particular load, for connecting and disconnecting to a p... | 10/16/2007 |
| 7276914 | System and method for guided TDR/TDT computerized tomography A system for detecting a defect or discontinuity in media or at an interface of the media includes a signal generator; a transmission path coupled to the signal generator, wherein the transmission path is arranged along or through the media; a detection circuit for ... | 10/02/2007 |
| 7254511 | Method and apparatus for calibrating a frequency domain reflectometer A calibration system is provided for calibrating frequency domain reflectometers in the field by using both the scattering parameters of the multi-port junction determined at the factory and changing the offset and gain terms used in generating a complex reflection ... | 08/07/2007 |
| 7253637 | Arc fault circuit interrupter system In order to determine whether arcing is present in an electrical circuit, a sensor signal corresponding to current in said electrical circuit is processed. The sensor signal is filtered to determine the presence of noise in a predetermined frequency range and produc... | 08/07/2007 |
| 7231415 | Method and system for provisioning facility-based displays in support of repairing outside network facilities The present invention provides a method and system for providing facility-based aerial displays to field personnel in support of repairing outside network facilities. The invention relates to a method and system for displaying a series of selected frames to generate... | 06/12/2007 |
| 7215126 | Apparatus and method for testing a signal path from an injection point The invention includes an apparatus and method for testing an electronic signal path. The apparatus includes a signal generator (102) configured to inject a test signal into the electronic signal path at an injection point when coupled to the signal path. The... | 05/08/2007 |
| 7212008 | Surveillance device detection utilizing non linear junction detection and reflectometry An apparatus for detecting concealed surveillance devices coupled to a transmission line uses either a time domain or frequency domain reflectometry operation to locate any impedance anomalies on the transmission line and a non-linear junction detection operation to... | 05/01/2007 |
| 7212496 | Remote test unit A remote test unit (RTU) and method of operation are provided for utilizes the ability of an access matrix ability to route signals. The RTU can emulate a central Digital Subscriber Line Modem (DSLM-C) for testing customer premises equipment containing a remote Digi... | 05/01/2007 |
| 7208958 | Antenna for detection of partial discharges in a chamber of an electrical instrument A sensor for picking up partial discharges in an electrical equipment tank filled with a dielectric fluid includes an antenna responsive to the electromagnetic waves generated by such partial discharges. In the sensor, the antenna is formed by two electrodes that ar... | 04/24/2007 |
| 7190144 | System and method for adjusting a PID controller in a limited rotation motor system An adjustment system is disclosed for adjusting a proportional, integral, derivative controller in a limited rotation motor system. The adjustment system includes a first transform unit, a second transform unit, a model identification unit, and a PID adjustment unit... | 03/13/2007 |
| 7183791 | Reliability circuit for applying an AC stress signal or DC measurement to a transistor device An integrated circuit is provided, which includes a transistor device under test, an AC drive circuit, an AC bias circuit and a DC bias circuit. The AC drive circuit generates an AC drive signal. The AC bias circuit biases the transistor device under AC bias conditi... | 02/27/2007 |
| 7183788 | Wireless radio frequency technique design and method for testing of integrated circuits and wafers The present invention is for an apparatus and method for the wireless testing of Integrated Circuits and wafers. The apparatus comprises a test unit external from the wafer and at least one test circuit which is fabricated on the wafer which contains the Integrated ... | 02/27/2007 |
| 7183774 | Method of detecting partial discharges and diagnostic system for electrical apparatus The invention provides a method of detecting partial discharges in an electrical appliance insulated in a receptacle and a system of diagnosing the state of the appliance using this method. With the help of an UHF antenna placed in the receptacle of the appliance, t... | 02/27/2007 |
| 7171638 | Methods of screening ASIC defects using independent component analysis of quiescent current measurements A method and computer program for screening defects in integrated circuit die includes steps of receiving as input measurements of quiescent current for each die in a sample lot of semiconductor die and generating a test matrix from the quiescent current measurement... | 01/30/2007 |
| 7164243 | System and method for establishing motor efficiency during balanced or unbalanced operating conditions A system and method for establishing a plurality of operating parameters of a multiphase motor. The plurality of electrical parameters may be established from stator resistance data and electrical input data. The system and method may be used to decompose the electr... | 01/16/2007 |
| 7154280 | Apparatus and method for communications testing A communications connector tester for quickly and accurately analyzing communications connectors at production to determine whether the connectors are fit for use in certain communications applications is disclosed. Test signals at several discrete frequencies are s... | 12/26/2006 |
| 7151656 | Arc fault circuit interrupter system A system for determining whether arcing is present in an electrical circuit in response to a sensor signal corresponding to current in the circuit includes a circuit for analyzing the sensor signal to determine the presence of broadband noise in a predetermined rang... | 12/19/2006 |
| 7141986 | Using time domain reflectometry to detect mismatched cable/connector interface A system for detecting connector compatibility with a time domain reflectometry (TDR) circuit on a peripheral device. A cable connects the peripheral device and a second peripheral device. A first connector is for mating to a second connector on the second periphera... | 11/28/2006 |
| 7136265 | Load recognition and series arc detection using bandpass filter signatures A method and system for determining whether arcing is present in an electrical circuit includes sensing a change in an alternating current in the circuit and developing a corresponding input signal, analyzing the input signal to determine the presence of broadband n... | 11/14/2006 |
| 7096168 | Circuit configuration for simulating the input or output load of an analog circuit In order to simulate the input or output load of an analog circuit, the output of the analog circuit is connected to the input of a driver stage. A measuring element is placed between the input of the driver stage and the reference potential, in order to record the ... | 08/22/2006 |
| 7091727 | Method and IC for detecting capacitance variation A method and an integrated circuit for detecting capacitance variation includes the steps of: generating a detection frequency for capacitance variation and a detection frequency which lags the detection frequency by k times, wherein the detection frequencies are ba... | 08/15/2006 |
| 7092947 | Browser on test equipment A portable telecommunication test set, such as a telephone line butt set, with a web browser incorporated therein. A standard HTML (Hyper Text Mark-up Language) or WAP (Wireless Application Protocol) browser may be incorporated within the portable test set, allowing... | 08/15/2006 |
| 7076374 | Methods and systems for detecting and locating damage in a wire Methods, systems, and articles of manufacture consistent with the present invention provide for identifying and locating wire damage on a wire. Broadband impedance phase and magnitude information for the wire is obtained. Potential wire damage on the wire is identif... | 07/11/2006 |
| 7071705 | Apparatus and method for communications testing A communications connector tester for quickly and accurately analyzing communications connectors at production to determine whether the connectors are fit for use in certain communications applications is disclosed. Test signals at several discrete frequencies are s... | 07/04/2006 |
| 7071700 | Characterizing analog and digital telephone circuits and other types of wiring systems using frequency domain reflectometry (FDR) The structural and termination characteristics of a telephone or other wiring circuit can be determined by generating a continuous stream of low-energy electrical signals, injecting these into the circuit under test, and analyzing the energy reflected at impedance c... | 07/04/2006 |
| 7068480 | Arc detection using load recognition, harmonic content and broadband noise A method of determining whether arcing is present in an electrical circuit includes sensing a change in current in the circuit and developing a corresponding input signal, analyzing the input signal to determine the presence of broadband noise in a predetermined ran... | 06/27/2006 |
