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The App Notes/LAB Brief section of the Teledyne LeCroy Technical Library lets you search for, browse, and print the latest technical documentation. A search aid allows you to filter documents by category or keyword.

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App Notes/LAB Brief

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Analyzing Variable-Flux Electric Machines with MDA810 Motor Drive Analyzer

Rotors with magnets configured for variable magnetization can minimize losses in a propulsion motor at different rotor speeds and loads. Varying the magnetization requires the motor drive control system to acquire data and make calculations during a very short magnetization period. Teledyne LeCroy’s MDA810 Motor Drive Analyzer acquires and analyzes the controlled energy pulse trajectory to ensure proper operation of the motor drive and control system.

Volt-second Sensing Control Analysis in a DB-DTFC with MDA810 Motor Drive Analyzer

Deadbeat-direct torque and flux control (DB-DTFC) is being explored as an alternative to field-oriented controls (FOC) or direct torque control (DTC) due to its ability to achieve fast torque dynamics, manipulate losses without compromising torque, and utilize full DC bus voltage at voltage-limited operation. Evaluating the Volt-second sensing accuracy requires a precise measurement of Volt-seconds as the reference. Teledyne LeCroy’s MDA810 Motor Drive Analyzer provides such capabilities over each power-semiconductor switching period.

Examining a Vehicular Propulsion Motor with MDA810 Motor Drive Analyzer

One road to thorough characterization and analysis of a vehicular propulsion motor and its associated drive circuitry involves use of analog torque load cells and analog tachometers to assess drive output to motor-shaft mechanical output efficiency. Whereas traditional power analyzers provide only a static mean measurement capability, Teledyne LeCroy’s MDA810 Motor Drive Analyzer provides static and dynamic power analysis coupled with long acquisition times for comprehensive analysis of the motor/drive’s performance and efficiency.

Testing a Battery-Powered Brushless DC Motor/Drive with MDA810 Motor Drive Analyzer

Thorough characterization and analysis of a brushless DC motor and its associated drive circuitry requires the ability to view waveforms during dynamic events and to visualize the measurements over time. Whereas traditional power analyzers provide only a static mean measurement capability and, perhaps, viewing of very short waveform acquisitions, Teledyne LeCroy’s MDA810 Motor Drive Analyzer provides static and dynamic power analysis coupled with long acquisition times for comprehensive analysis of the motor/drive’s performance and efficiency.

Testing AC Induction Motor Drives with MDA810 Motor Drive Analyzer

Thorough characterization and analysis of an AC induction motor drive requires the ability to view waveforms during dynamic events and to visualize the measurements over time. Whereas traditional power analyzers provide only a static mean measurement capability and, perhaps, viewing of very short waveform acquisitions, Teledyne LeCroy’s MDA810 Motor Drive Analyzer provides static and dynamic power analysis coupled with long acquisition times for comprehensive analysis of the motor drive’s performance and efficiency.

Radar Measurement Techniques: Characterizing PRI Stagger During Walkoff

Accurate time domain measurements such as PRI (pulse repetition interval) stagger during walkoff have not been possible using traditional frequency domain equipment. With the advent of ultra-high bandwidth real time oscilloscopes and timing parameter tracking, accurate time domain ECM (electronic countermeasures) flightline testing such as gated PRI, PRI stagger variation, and parametric timing measurements of a demodulated pulse are now possible using high bandwidth real time oscilloscopes. This technical brief describes how these complex measurements can be performed using an oscilloscope.

Accurate ESD Pulse Testing Using Oscilloscopes

This application brief discusses the recommended methods and best practices for testing ESD (electrostatic discharge) pulses using real-time oscilloscopes.

Capture of an NVMe Boot up trace

In order for the LeCroy Summit Protocol analyzer to properly decode and display traces for NVMe, the analyzer software must have record of which PCIe devices are Mass Storage, what is the MBAR address, what address each queue has, as well as several other pieces of information that is typically established shortly after a PCIe link is established and devices under test come online. Typically the easiest way for the analyzer to get this information, and properly decode an NVMe trace, is to capture a trace at boot up. Every trace captured after this boot up trace will used the same decoding mapping, eliminating the need for future boot up captures. While this is a simple process, there are a few settings that may help get the complete trace with all relevant details needed for the SSD decode mapping.
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