241 patents
Utility
Test and Measurement System for Analyzing Devices Under Test
4 Jan 24
A test and measurement system has a test and measurement instrument having an adaptor with an interface configured to communicate through one or more communications links with a new device under test to receive new test results, a memory configured to store a database of test results and a database of analyzed test results related to tests performed with one or more prior devices under test, a data analyzer connected to the test and measurement instrument through the one or more communications link, the data analyzer configured to analyze the new test results based on the stored test results, and a health score generator configured to generate a health score for the new device under test based on the analysis from the data analyzer.
Sam J. Strickling, Daniel S. Froelich, Michelle L. Baldwin, Jonathan San, Lin-Yung Chen
Filed: 14 Sep 23
Utility
Combined Shunt and Multi-segmented Rogowski-coil Current Sensor
28 Dec 23
A current sensor configured to measure current in a current-carrying conductor.
Josiah A. Bartlett, Daniel G. Knierim, David L. Knierim
Filed: 22 Aug 23
Utility
Analog Signal Isolator
21 Dec 23
Disclosed is a signal isolating test instrument, such as an electronics test probe.
Jonathan S. Dandy, Daniel G. Knierim
Filed: 29 Aug 23
Utility
Separating Noise to Increase Machine Learning Prediction Accuracy In a Test and Measurement System
21 Dec 23
A test and measurement instrument has an input port to allow the instrument to receive one or more waveforms from a device under test (DUT), one or more low pass filters to remove a portion of the noise from the one or more waveforms, and one or more processors to: select a waveform pattern from the waveforms, measure noise in the one or more waveforms and generate a noise representation of the noise removed, create one or more images using the waveform pattern and the one or more filtered waveforms, add the noise representation to the one or more images to produce at least one combined image, input the at least one combined image to one or more deep learning networks, and receive one or more predicted values for the DUT.
John J. Pickerd, Kan Tan
Filed: 12 Jun 23
Utility
Oscilloscope Having a Principal Component Analyzer
21 Dec 23
A system includes an input for accepting an input signal from a Device Under Test (DUT), a measurement unit for generating first measurement data and second measurement data from the input signal, and one or more processors configured to derive at least one principal component from the first and second measurement data using principal component analysis, and remap the first measurement data and the second measurement data to a principal component domain derived from the at least one principal component.
Justin E. Patterson
Filed: 13 Jun 23
Utility
Machine Learning for Measurement Using Linear Response Extracted from Waveform
21 Dec 23
A test and measurement instrument has one or more ports configured to receive a signal one or more devices under test (DUT), and one or more processors configured to execute code that causes the one or more processors to: acquire a waveform from the signal, derive a pattern waveform from the waveform, perform linear response extraction on the pattern waveform, present one or more data representations including a data representation of the extracted linear response to a machine learning system, and receive a prediction for a measurement from the machine learning system.
Kan Tan, John J. Pickerd
Filed: 15 Jun 23
Utility
Generating Test Data Using Principal Component Analysis
21 Dec 23
A system includes an input for accepting a dataset including at least two sets of data in a dataset domain and one or more processors configured to derive at least two principal components from the dataset using principal component analysis, the at least two principal components being orthogonal to one another, map the dataset to a principal component domain derived from the at least two principal components, generate additional data in the principal component domain, and remap the additional data in the principal component domain back to the dataset domain as a newly generated dataset.
Justin E. Patterson, Kan Tan
Filed: 19 Jun 23
Utility
Automated Cavity Filter Tuning Using Machine Learning
14 Dec 23
A test and measurement instrument includes one or more ports to connect to one or more devices under test (DUT) having tuning screws, and to a robot, one or more processors to configured to: send commands to the robot to position the tuning screws on the one or more DUTs to one or more sets of positions, each set of positions being a parameter set for the tuning screws, acquire a set of operating parameters for each parameter set from the one or more DUTs, generate a parameter set image for each set, create a combined image of the parameter set images, provide the combined image to a machine learning system to obtain a predicted set of values, adjust the predicted set of values to produce a set of predicted positions, send commands to the robot to position the tuning screws to positions in the set of predicted positions, obtain a set of tuned operating parameters from the one or more DUTs, and validate operation of the one or more DUTs.
John J. Pickerd, Ajaiey Kumar Sharma, Kan Tan
Filed: 19 May 23
Utility
Shunt for Use In Busbar-to-module Connections
23 Nov 23
A test and measurement accessory has a shunt configured to be located in a current path between a busbar and an electronic module and structured to minimize length added to the current path, the shunt having an opening extending through the shunt, and a resistive portion, the resistive portion configured to form a portion of the current path, and two or more contacts, at least one of the contacts extending through the opening and electrically insulated from the resistive portion of the shunt.
Daniel G. Knierim, Julie A. Campbell, David M. Ediger
Filed: 17 May 23
Utility
Transmitter Equalizer Tap Extraction
16 Nov 23
A test and measurement instrument has one or more input ports to connect the instrument to a device under test (DUT), one or more processors configured to execute code to cause the one or more processors to: receive an equalized waveform and an un-equalized waveform through the input port from the DUT, without any knowledge of a digital pattern that corresponds to the waveforms and without extracting the digital pattern from the waveforms, align the un-equalized waveform and the equalized waveform in time to produce an aligned un-equalized waveform and an aligned equalized waveform, and use the aligned equalized waveform and the aligned un-equalized waveform to determine equalizer tap values.
Kan Tan
Filed: 30 Apr 23
Utility
Test and measurement instrument accessory with reconfigurable processing component
14 Nov 23
A new test system includes a programmed device having an input port for receiving a signal for testing or measuring on the programmed device, and a reprogrammable test accessory having an output coupled to the input port of the programmed device.
Charles W. Case, Daniel G. Knierim, Joshua J. O'Brien, Josiah A. Bartlett, Julie A. Campbell
Filed: 19 Jul 21
Utility
System for continuous recording and controllable playback of input signals
14 Nov 23
A test and measurement instrument includes an acquisition memory and a processor structured to store a stream of sampled incoming data samples in the acquisition memory.
Shane L. Arnold
Filed: 7 Dec 20
Utility
Precision, high bandwidth, switching attenuator
7 Nov 23
An apparatus has at least substrate having at least two conductive paths, a least two connectors positioned in a first plane, and a movable stage connected to one of the at least one substrate to move the one substrate perpendicular to the first plane form an electrically conductive path between two of the at least two connectors.
Julie A. Campbell, Daniel G. Knierim, Barton T. Hickman
Filed: 8 Apr 22
Design
Test and measurement instrument and accessories
31 Oct 23
Chris A. Valentine, Neil Clayton, David M. Ediger, Marc A. Gessford, Taylor S. K. Heen, Brian A. Hollenberg, Steve U. Reinhold, Prashanth Thota, Satya N. Whitlock
Filed: 29 Sep 21
Utility
Multi-instrument behavior synchronization using jobs and milestones
24 Oct 23
A method of synchronizing tasks in a test and measurement system, includes receiving, at a client in the system, a task input, receiving, at a job manager running on a first device processor in the system, a call from the client to create a job associated with the task, returning to the client an action containing at least one job code block associated with the job, receiving a call for the action, executing the at least one job code block by at least one processor in the system, determining that the job has completed, and completing the task.
Timothy E. Sauerwein, Clinton M. Alter, Sean T. Marty, Jenny Yang, Keith D. Rule
Filed: 11 Sep 20
Utility
Device and Method for Waveform Searching by Example
19 Oct 23
A test and measurement instrument includes an input for accepting an input signal from a Device Under Test (DUT), acquisition memory for storing a sampled waveform derived from the input signal, an output display, and one or more processors configured to accept a portion of the sampled waveform as a search portion, search the sampled waveform for portions similar to the search portion, and visually indicate, on the output display, portions of the sampled waveform that are similar to the search portion as matched portions.
Lance H. Forsberg, Keith D. Rule, David N. Wyban
Filed: 14 Apr 23
Utility
Abstracting of digital acquisition memory
17 Oct 23
An abstracted digital memory acquisition circuit, including an analog input configured to receive an analog signal, an analog-to-digital converter configured to receive the analog signal and convert the analog signal to a first digital signal, a digital input configured to receive a second digital signal, a controller configured to receive the first digital signal and the second digital signal and output a stream of bits, the stream of bits including the first digital signal and the second digital signal, and a control signal, and an output configured to electrically connect to a digital input of a test and measurement instrument and output the stream of bits and the control signal.
Jonathan D. Clem
Filed: 17 Dec 18
Utility
Real-equivalent-time oscilloscope
17 Oct 23
A test and measurement instrument, such as an oscilloscope, having a Nyquist frequency lower than an analog bandwidth, the test and measurement instrument having an input configured to receive a signal under test having a repeating pattern, a single analog-to-digital converter configured to receive the signal under test and sample the signal under test over a plurality of repeating patterns at a sample rate, and one or more processors configured to determine a frequency of the signal under test and reconstruct the signal under test based on the determined frequency of the signal, the pattern length of the signal under test, and/or the sample rate without a trigger.
Kan Tan
Filed: 22 Feb 21
Utility
Integrated communication link testing
17 Oct 23
A test and measurement device includes an input configured to receive an analog signal from a Device Under Test (DUT), an Analog to Digital Converter (ADC) coupled to the input and structured to convert the analog signal to a digital signal, a receiver implemented in a first Field Programmable Gate Array (FPGA) and structured to accept the digital signal and perform signal analysis on the digital signal, a transmitter implemented in a second FPGA and structured to generate a digital output signal, and a Digital to Analog Converter (DAC) coupled to the transmitter and structured to convert the digital output signal from the transmitter to an analog signal, and structured to send the analog signal to the DUT.
Pirooz Hojabri, Joshua J. O'Brien, Gregory A. Martin, Patrick Satarzadeh, Karen Hovakimyan
Filed: 18 May 21
Utility
Semi-automated Oscilloscope Noise Compensation Based on Power Spectral Density Characterization
12 Oct 23
A method of dynamically determining an oscilloscope noise characteristic includes retrieving a power spectral density (PSD) model of noise from a storage based upon a current configuration of the oscilloscope, generating a representation of any filtering being applied to a waveform generated by a device under test, using the PSD and the representation to produce a modified power spectral density, and using the modified power spectral density to determine a dynamic oscilloscope noise characteristic.
Mark L. Guenther, Pavel R. Zivny
Filed: 14 Mar 23