144 patents
Page 2 of 8
Utility
Test and Measurement Instrument Having Spectrogram with Cursor Time Correlation
13 Jul 23
A test and measurement instrument includes an input port for accepting an input signal for measurement, a display having a first window for showing measurements of the input signal in a time domain, and having a second window for showing measurements of the input signal in a frequency domain, where the time domain of the first window and the frequency domain of the second window are related through a transform having a pre-determined resolution bandwidth, a cursor generator structured to generate a cursor at a specific location in time in the first window, a spectral generator to produce a spectral display of a portion of the input signal that is centered around the cursor and has the pre-determined resolution bandwidth, and an image generator configured to present the generated spectral display in the second window.
Gary J. Waldo, Alan Edward Wolke
Filed: 30 Nov 22
Utility
Termination Trigger Pick-off for Remote Head Sampler
6 Jul 23
A test and measurement device includes an input port to receive an input signal, a sampling circuit structured to generate a sample from the input signal, in which generating the sample from the input signal produces an amount of kickout energy, and an energy reducing circuit coupled between the sampling circuit and one or more other components of the test and measurement device, the energy reducing circuit structured to decrease the amount of kickout energy from the sampling circuit.
Pavel R. Zivny
Filed: 30 Dec 22
Utility
Method of Ctle Estimation Using Channel Step-response for Transmitter Link Equalization Test
29 Jun 23
A method of automatically selecting a continuous time linear equalization (CTLE) filter includes capturing a response waveform for a channel of a communication link of a device under test (DUT), generating a set of candidate CTLEs, and automatically selecting the CTLE from the set of candidate CTLEs using the response waveform.
Subhankar Ghose, Ankit Dash, David M. Bouse, Pradeep Joshi
Filed: 28 Nov 22
Utility
Reverse Recovery Measurements and Plots
4 May 23
A test and measurement instrument has a user interface, one or more probes to connect to a device under test (DUT), and one or more processors configured to execute code to cause the one or more processors to: receive waveform data from the DUT after activation of the DUT by application of power from a power supply, and application of at least a first and second pulse from a source instrument, locate one or more reverse recovery regions in the waveform data, determine a reverse recovery time for the DUT from the reverse recovery region, and display a reverse recovery plot of the one or more reverse recovery regions on the user interface, the reverse recovery plot being automatically configured to display one or more of the reverse recovery regions, and including at least one characteristic for the one or more reverser recovery regions annotated on the reverse recovery plot.
Vivek Shivaram, Niranjan R Hegde, Parjanya Adiga, Krishna N H Sri, Tsuyoshi Miyazaki, Yogesh M. Pai, Venkatraj Melinamane
Filed: 28 Oct 22
Utility
Flexible Wide Bandgap Double Pulse Testing Methodology
4 May 23
A test and measurement instrument has a user interface, one or more probes to allow the instrument to connect to a device under test (DUT), and one or more processors configured to execute code to cause the one or more processors to: receive one or more user inputs through the user interface, at least one of the user inputs to identify at least one analysis to be performed on the DUT, receive waveform data from the DUT when the DUT is activated by application of power from a power supply, and application of one of a first and second pulse or multiple pulses from a source instrument, perform the at least one analysis on the waveform data, and display the waveform data and analysis on the user interface.
Vivek Shivaram, Niranjan R Hegde, Parjanya Adiga, Krishna N H Sri, Tsuyoshi Miyazaki, Yogesh M. Pai, Venkatraj Melinamane
Filed: 28 Oct 22
Utility
System and Method for Developing Machine Learning Models for Testing and Measurement
30 Mar 23
A test and measurement machine learning model development system includes a user interface, one or more ports to allow the system to connect to one or more data sources, one or more memories, and one or more processors configured to execute code to cause the one or more processors to: display on the user interface one or more application user interfaces, the application user interfaces to allow a user to provide user inputs; use and application programming interface to configure the system based on the user inputs; receive data from the one or more data sources; apply one or more modules from a library of signal processing and feature extraction modules to the data to produce training data; apply one or more machine learning models to the training data; provide monitoring of the one or more machine learning models; and save the one or more machine learning models to at least one of the one or more memories.
Mark Anderson Smith, Sunil Mahawar, John J. Pickerd, Sriram K. Mandyam
Filed: 22 Sep 22
Utility
System and Method for Detection of Anomalies In Test and Measurement Results of a Device Under Test (Dut)
23 Mar 23
A test and measurement device has an interface, one or more connectors, each connector to allow the test and measurement device to connect to a test and measurement instrument, and one or more processors, the one or more processors configured to execute code to cause the one or more processors to: receive one or more user inputs through the interface identifying one or more tests to perform on a device under test (DUT); form a connection through one of the one or more connectors to the DUT to perform the one or more tests and receive test result data; apply one or more machine learning models to the test result data to identify potentially anomalous test results; and generate and present a representation of the test result data and the potentially anomalous test results.
Siby Charley Pulikottil, Sriram Mandyam Krishnakumar, Mahesha Guttahalli Lakshmipathy
Filed: 20 Sep 22
Utility
Test and Measurement Instrument with Removable Battery Pack
16 Mar 23
A test system includes a test and measurement instrument having one or more inputs for receiving one or more signals to be measured or tested, a display for outputting measurement results or test results, one or more processors for operating the instrument, a chassis housing the instrument, a power connection to receive power for powering the one or more processors from a wall connection.
Chris A. Valentine, Prashanth Thota, Steve U. Reinhold, Jonathan D. Clem, Timothy Keil
Filed: 14 Sep 22
Utility
Real-equivalent-time Clock Recovery for a Nearly-real-time Real-equivalent-time Oscilloscope
9 Mar 23
A test and measurement device has an input port configured to receive a signal from a device under test, the signal having a symbol rate, one or more analog-to-digital converters to convert the signal to waveform samples at a sampling rate, and one or more processors configured to execute code that, when aliasing is present in the waveform samples, causes the one or more processors to: up-sample the waveform samples to produce up-sampled samples; use the up-sampled samples to produce a real-time waveform; perform clock recovery on the real-time waveform to produce a recovered clock; and resample the waveform samples using the recovered clock to produce a non-aliased waveform.
Kan Tan
Filed: 24 Aug 22
Utility
Parallel Trigger Paths In a Test and Measurement Instrument
23 Feb 23
A test and measurement instrument includes an auxiliary trigger input port for receiving an auxiliary trigger signal, a digital trigger processor for generating a digital trigger signal from the auxiliary trigger signal, an analog trigger processor for generating an analog trigger signal from the auxiliary trigger signal, a user-configurable selector coupled to the digital trigger processor and to the analog trigger processor, the user-configurable selector configured to output either the digital trigger signal or the analog trigger signal as a selected trigger output signal of the instrument.
Joshua J. O'Brien, Jed H. Andrews
Filed: 19 Aug 22
Utility
Digital Twin with Machine Learning Waveform Generation Including Parameter Control for Device Under Test Emulation
23 Feb 23
A device for generating waveforms includes a machine learning system configured to associate waveforms from a device under test to parameters, a user interface configured to allow a user to provide one or more user inputs, and one or more processors configured to execute code that causes the one or more processors to receive one or more inputs through the user interface that include one or more parameters, apply the machine learning system to the received one or more parameters, produce, by the machine learning system, a waveform based on the one or more parameters, and output the produced waveform.
John J. Pickerd, Justin E. Patterson, Heike Tritschler
Filed: 22 Aug 22
Utility
Combined Tdecq Measurement and Transmitter Tuning Using Machine Learning
16 Feb 23
A test and measurement system has a test and measurement instrument, a test automation platform, and one or more processors, the one or more processors configured to execute code that causes the one or more processors to receive a waveform created by operation of a device under test, generate one or more tensor arrays, apply machine learning to a first tensor array of the one or more tensor arrays to produce equalizer tap values, apply machine learning to a second tensor array of the one of the one or more tensor arrays to produce predicted tuning parameters for the device under test, use the equalizer tap values to produce a Transmitter and Dispersion Eye Closure Quaternary (TDECQ) value, and provide the TDECQ value and the predicted tuning parameters to the test automation platform.
John J. Pickerd, Kan Tan
Filed: 29 Jul 22
Utility
Machine Learning for Taps to Accelerate Tdecq and Other Measurements
16 Feb 23
A test and measurement instrument has an input configured to receive a signal from a device under test, a memory, a user interface to allow the user to input settings for the test and measurement instrument, and one or more processors, the one or more processors configured to execute code that causes the one or more processors to: acquire a waveform representing the signal received from the device under test; generate one or more tensor arrays based on the waveform; apply machine learning to the one or more tensor arrays to produce equalizer tap values; and apply equalization to the waveform using the equalizer tap values to produce an equalized waveform; and perform a measurement on the equalized waveform to produce a value related to a performance requirement for the device under test.
Kan Tan, John J. Pickerd
Filed: 29 Jul 22
Utility
Stand for a Test and Measurement Instrument
19 Jan 23
A stand for receiving a portable test and measurement instrument includes a base plate, a first portion extending orthogonally from the generally flat base, the first portion including one or more holes spaced in a pattern through which one or more fasteners may attach the test and measurement instrument to the stand, and a second portion adjacent to and extending at an angle from the first portion, the second portion including one or more holes spaced in a pattern through which one or more fasteners may attach the test and measurement instrument to the stand.
Chris A. Valentine, David M. Ediger, Prashanth Thota
Filed: 26 Sep 22
Utility
Swept Parameter Oscilloscope
19 Jan 23
A test and measurement instrument has a user interface configured to allow a user to provide one or more user inputs, a display to display results to the user, a memory, one or more processors configured to execute code to cause the one or more processors to receive a waveform array containing waveforms resulting from sweeping one or more parameters from a set of parameters, recover a clock signal from the waveform array, generate a waveform image for each waveform, render the waveform images into video frames to produce an image array of the video frames, select at least some of the video frames to form a video sequence, and play the video sequence on a display.
John J. Pickerd, Justin E. Patterson
Filed: 11 Jul 22
Utility
Multiple Analog-to-digital Converter System to Provide Simultaneous Wide Frequency Range, High Bandwidth, and High Resolution
19 Jan 23
A composite analog-to-digital converter (ADC) has a low resolution ADC configured to receive and digitize analog data, the low resolution ADC having a low resolution and a high operating speed, one or more high resolution ADCs configured to receive and digitize the analog data, the one or more high resolution ADCs having a resolution higher than the low resolution ADC, and an operating speed lower than the high operating speed of the low resolution ADC, a sample clock generator to provide a sample clock signal to the low resolution ADC and to a clock divider, a mixer to receive the analog data and connected to the one or more high resolution ADCs, a local oscillator connected to the mixer to allow the one or more high resolution ADCs to be tuned to sample a portion of a spectrum of the first ADC.
ALEXANDER KRAUSKA
Filed: 12 Jul 22
Utility
Usage-aware Compression for Streaming Data from a Test and Measurement Instrument
12 Jan 23
A test and measurement instrument includes one or more ports including at least one test port configured to couple to one or more devices under test, a user interface to receive one or more user inputs, an acquisition memory to store waveform data acquired from the one or more devices under test, one or more processors configured to execute code that causes the one or more processors to: receive an input through the user interface; determine one or more requested data types based on the input; transform the waveform data into compressed data containing only data elements corresponding to the one or more requested data types; and transmit the compressed data to a client.
Keith D. Rule
Filed: 7 Jul 22
Utility
System and Method for Computing Direct Quadrature Zero Resultant Drive Vector Using Rotor Position
29 Dec 22
A test and measurement instrument includes one or more sensors configured to measure a mechanical position of a synchronous machine driven by analog three-phase signals, a converter to determine an instantaneous electrical angle from the measured mechanical position, a transform configured to generate DQ0 signals based on the instantaneous electrical angle, and a vector generator structured to produce a resultant vector from the DQ0 signals.
Parjanya Adiga, Niranjan R. Hegde, Krishna N H. Sri, Gary J. Waldo, Yogesh M. Pai
Filed: 24 Jun 22
Utility
Multiple Sample-rate Data Converter
22 Dec 22
A test and measurement instrument includes a first data channel including a first data converter operating at a first rate, and a second data channel including a second data converter operating at a second rate that is different than the first rate.
Joshua J. O'Brien, Timothy E. Bieber, Barton T. Hickman
Filed: 21 Jun 22
Utility
General Digital Signal Processing Waveform Machine Learning Control Application
8 Dec 22
A test and measurement system includes a machine learning system configured to communicate with a test automation system, a user interface configured to allow a user to provide one or more user inputs and to provide results to the user, and one or more processors, the one or more processors configured to execute code that causes the one or more processors to receive one or more user inputs through the user interface, the one or more user inputs at least identifying a selected machine learning system configuration to be used to configure the machine learning system, receive a waveform created by operation of a device under test, apply the configured machine learning system to analyze the waveform, and provide an output of predicted metadata about the waveform.
John J. Pickerd, Mark Anderson Smith, Kan Tan, Evan Douglas Smith, Justin E. Patterson, Heike Tritschler
Filed: 2 Jun 22