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7613576 |
Using EMI signals to facilitate proactive fault monitoring in computer systems
A system that monitors electromagnetic interference (EMI) signals to facilitate proactive fault monitoring in a computer system is presented. During operation, the system receives EMI signals from...
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7613580 |
Method and apparatus for generating an EMI fingerprint for a computer system
A system that generates an electromagnetic interference (EMI) fingerprint for a computer system is presented. During operation, the system executes a load script on the computer system, wherein the...
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7609071 |
Human phantom apparatus, finger phantom apparatus, and apparatus for measuring characteristic of antenna using the same phantom apparatus
A human phantom apparatus is provided with a body section, a head section connected with the body section, at least one shoulder section connected with the body section, and an arm section...
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7466142 |
Anechoic chamber for direct observation of the electromagnetic behavior of a tool
An apparatus for studying the electromagnetic behavior of an electromagnetic wave-emitting or electromagnetic wave-receiving tool is provided. An anechoic chamber is configured to receive the tool...
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7425833 |
Broad-band low-inductance cables for making Kelvin connections to electrochemical cells and batteries
A broad-band technique for reducing the distributed inductance of a four-conductor Kelvin cable is disclosed. A special inductance-canceling cable section is connected in tandem with the cable...
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7400151 |
Connector crosstalk and return loss cancellation
A device for testing data communications cabling. The device consists of a signal generator that can generate a test signal to test the data communications cabling and a receiving component that...
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7355413 |
Testing method/arrangement measuring electromagnetic interference of noise in a to-be-tested printed circuit board
A testing method for measuring electromagnetic interference of a noise on a to-be-tested printed circuit board, has the steps of: a) injecting a signal simulating an expected noise of a...
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7336230 |
Method for measuring electromagnetic radiation pattern and gain of radiator using term waveguide
A method for measuring electromagnetic radiation pattern and gain of radiator using TEM waveguide is disclosed. The method includes the steps of: a) measuring powers of output port of a transverse...
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7323884 |
RF test chamber
A system for testing radio frequency (RF) communications of a device capable of such communications is provided. The system includes a chamber for isolating the device from RF interference, an...
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7317317 |
Shielded micro sensor and method for electrochemically monitoring residue in micro features
The micro sensor is fabricated with a guard that shields the electrodes from the surrounding environment, thereby reducing loss of measurement signal through the parasitic capacitances to the...
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7317318 |
FEXT cancellation of mated RJ45 interconnect
A network test instrument provides maximum compensation of FEXT by use of mutual inductance between one or more signals. The inductance is suitably formed as a PCB trace component, or as discrete...
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7315171 |
Electronic judging apparatus for working state of the equipment
The invention provides the electronic judging apparatus to detect the working state of the other electric equipment without modifying it inside. The common mode noise around the electric power...
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7310504 |
IF frequency response characterization employing overlapping frequency bands
A method and system characterizes an IF response of a receiver under test, such that an effect on the characterization by errors associated with uncertainties in knowledge of an RF stimulus signal...
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7288943 |
Electroimpedance tomograph with common-mode signal suppression
An electroimpedance tomograph is provided with a plurality of electrodes ( 1 ), which can be placed on the body of a patient and are connected to a control and evaluating unit ( 20 ) via a selector...
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7285962 |
Method and apparatus for evaluating susceptibility to common mode noise in a computer system
A system for injecting noise signals onto power generated by a power source comprising: a voltage source; a device under test having a power input in operable communication with the noise...
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7279907 |
Method of testing for power and ground continuity of a semiconductor device
A method of testing for power and ground continuity of a semiconductor device having Input and Output (IO) pins and at least a pair of power and ground pins includes identifying the power and...
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7242176 |
Systems and methods for evaluating electromagnetic interference
Systems and methods for evaluating electromagnetic interference that may be employed, for among other things, to evaluate electronic system immunity to radiated electromagnetic fields and/or to...
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7228679 |
Electrical method of sensing operator presence on a walk-behind mower
An operator presence control assembly for a walk-behind greens mower includes a handle supported on a frame of the walk-behind greens mower, a ribbon switch on the outer perimeter of the handle,...
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7224172 |
Device and method for shielding electromagnetic emissions of equipment service vehicle
A system for shielding an engine component of an equipment service vehicle including an enclosure, wherein the enclosure includes a surface having a plurality of apertures formed in the surface of...
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7200825 |
Methodology of quantification of transmission probability for minority carrier collection in a semiconductor chip
A method for computer aided design of semiconductor chips which minimizes sensitivity to latchup is provided. The method evaluates electron transmission, reflection and absorption at geometric...
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7199593 |
Apparatus and methods for measuring parasitic capacitance and inductance of I/O leads on an electrical component using a network analyzer
Apparatus and methods are provided for measuring the potential for mutual coupling in an integrated circuit package of any type or configuration using a network analyzer in conjunction with a...
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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...
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7154278 |
Arrangement for detecting a leakage current or defect current
The invention is based on a circuit arrangement for the detection of a leakage current or defect current, by means of which the power supply of an electronic circuit can be switched off. It is...
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7106070 |
Broad-band low-inductance cables for making Kelvin connections to electrochemical cells and batteries
A broad-band technique for reducing the distributed inductance of a four-conductor Kelvin cable is disclosed. A special inductance-canceling cable section is connected in tandem with the cable...
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7081764 |
Interconnection and control of alien cross-talk test signal units
An alien cross-talking testing system employs a plurality of alien cross-talk test signal units, an alien cross-talk measurement unit and an interconnection base unit. Each alien cross-talk test...
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7081763 |
Test system and method for field measurement of alien cross-talk
An alien cross-talk method involves a victim cable and one or more disturber cables. The method encompasses a transmission of a RF test signal on each disturber cable between an alien cross-talk...
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7081762 |
Method and apparatus for measuring high speed glitch energy in an integrated circuit
A method and apparatus are provided for measuring high speed glitch energy between first and second. The method and apparatus induce a change in charge on the first node from a first charge level...
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7065655 |
Secure enclosure for key exchange
A method is disclosed comprising placing a first device in an enclosure, placing a second device in the enclosure, sealing the enclosure, and after sealing the enclosure, causing the first device...
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7051305 |
Delay estimation using edge specific miller capacitances
A method of estimating delay which includes configuring a first signal path and second signal path such that the first signal path is a victim signal path and the second signal path is an aggressor...
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7002355 |
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...
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6987391 |
Apparatus for and method of synchronous rejection
Methods of improving a signal to noise ratio using synchronous rejection are enclosed. Also disclosed are various synchronous rejection systems. In one method of synchronous rejection, the method...
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6982560 |
Method and system for determining cross-talk effects
According to an aspect of the invention, a method for determining near-end cross-talk effects is provided. A periodic test signal having a frequency increasing in predetermined steps is input into...
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6924651 |
Printed board inspecting apparatus
A printed board inspecting apparatus includes: an input unit for inputting a pulse from a first signal line; a receiving unit for receiving a voltage induced in a second signal line in response to...
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6829223 |
Computer network physical-layer analysis method and system
A method and system for computer network physical layer analysis is describe using signal analysis techniques and beginning with time-domain responses to yield highly quantitative analysis of the...
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6727721 |
Method for switching from a first operating condition of an integrated circuit to a second operating condition of the integrated circuit
The invention provides a method for switching from a first operating condition of an integrated circuit to a second operating condition of the integrated circuit differing from the first operating...
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6636048 |
Method for diagnosing performance problems in cabling
The present invention provides an apparatus for using time domain analysis of NEXT, Return Loss and the like, in conjunction with the application of time or distance referenced limits to verify and...
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6611147 |
Apparatus with interchangeable modules for measuring characteristics of cables and networks
A test apparatus for performing line testing of cable and networks. In one embodiment, the test apparatus includes a housing configured to electrically connect with an adapter module while...
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6603317 |
Leakage current reduction circuit and power supply employing the same
In a power supply (AC adapter etc.) of an electronic device, a first Y capacitor and a second Y capacitor are connected in series between two AC input lines which are connected to an input AC cable...
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6549019 |
Testing device for evaluating the immunity of an electronic device to electromagnetic noise
A testing device generates electromagnetic noise such as transients, power interruptions and Radio Frequency Interference (RFI) for application to an electronic device to test the immunity of the...
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6549018 |
Method for measuring the individual crosstalk in wavelength-division multiplex systems and wavelength division multiplex system
The invention is directed to a wavelength-division multiplex system and to a method for measuring the individual crosstalk of a specific, of a plurality or of all channels onto a payload channel in...
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6529013 |
Three-phase voltage sensor with active crosstalk cancellation
Active crosstalk cancellation in a multi-phase system is achieved using a capacitive voltage divider for each phase in the multi-phase system. A voltage measurement is obtained for the desired...
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6522152 |
Method and apparatus for adaptive cancellation of responses in cabling
An Adaptive Vector Cancellation method which uses time domain data for an instrument connection to estimate magnitude, phase, and time position of a signal response such as NEXT or Return Loss...
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6509742 |
Electromagnetic noise measurement apparatus, electromagnetic noise measurement method and recording medium
The object of the present invention is to provide an electromagnetic noise measurement apparatus, electromagnetic noise measurement method and recording medium capable of preventing erroneous...
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6426813 |
Telemetry system and method for EMI susceptibility testing of motor vehicles
A data transmission system for external use with a controller area network is installed on a motor vehicle undergoing high intensity electromagnetic interference susceptibility testing. The data...
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6417675 |
Receiver impedance calibration arrangements in full duplex communication systems
The present invention is directed to receiver impedance calibration arrangements in full duplex communication systems.
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6396286 |
Apparatus and method for testing computer equipment for susceptibility to neutral to ground noise
The power supply of equipment being tested for common mode noise problems is connected to a source of power with the power and neutral input terminals of the power supply isolated from the power...
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6344749 |
Test system for measuring frequency response and dynamic range on cable plant
A test system for measuring a frequency response of a signal path 148 by transmitting a short duration burst test signal 234 from a remote point 152 , capturing an impaired burst test signal ...
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6297647 |
Crosstalk test unit and method of calibration
A test unit for measuring crosstalk in twisted pair cable. The test unit has an output signal balance (OSB) circuit that compensates for parasitic capacitance at its output terminals. The OSB...
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6289290 |
Method for estimating radiated emission level from an EUT at an arbitrary position on the turn table at OATS
A method for evaluating radiation electric fields using output port powers of GTEM cell to obtain correlation between GTEM cell and Open Area Test Site(hereinafter, called OATS) in order to...
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6259258 |
Method and test unit for far end crosstalk measurements
A test system method for measurement of crosstalk in a multi-pair cable of the type used in local area networks. The system uses a far end signal generator at one end of the cable and a near end...
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