Tag Archives: at-work/test-and-measurement

3D Cable Modeling in COMSOL Multiphysics®

Post Syndicated from IEEE Spectrum Recent Content full text original https://spectrum.ieee.org/webinar/3d_cable_modeling_in_comsol_multiphysics


Tune into this webinar to learn more about 3D cable modeling. The models can be used to virtually test, design, and optimize cable systems based on accurate multiphysics simulation techniques.

We will demonstrate and discuss best practices to set up models and run simulations. Examples will cover the computation of inductive and thermal cable properties. Topics include:

  • Geometry creation and meshing
  • Setting up twisted armor periodicity
  • Evaluating currents and magnetic losses in the armor
  • Heating and thermal effects

The live demo in the COMSOL Multiphysics® software will lead you through the typical steps to simulate 3D cables using a high-voltage submarine cable as an example. You can ask questions throughout the webinar or at the end during the Q&A session.

Impedance Analysis: Measuring Low and Fast

Post Syndicated from IEEE Spectrum Recent Content full text original https://spectrum.ieee.org/webinar/impedance_analysis_measuring_low_and_fast

MFIA webinar

Precision, accuracy and measurement speed are three critical aspects to consider in any impedance measurement. This webinar addresses all three aspects with two distinct impedance measurement scenarios featuring the Zurich Instruments MFIA Impedance Analyzer.

In the first example, you’ll learn how to use the LabOne User Compensation to measure equivalent series resistance (ESR) below 1 mOhm and equivalent series inductance (ESL) below 20 nH fior a DC-Link capacitor. You’ll also find out how the LabOne Sweeper tool can display ESR and ESL as a function of frequency, allowing you to see how these values vary at frequencies other than the test frequency given by the manufacturer.

The second example will provide you with an overview of fast capacitance measurements on the timescale of microseconds. Such fast measurements are important to investigate the transient behavior of devices and materials. When measuring capacitive transients, the goal is to find a balance between measurement speed and precision: here you’ll learn how the LabOne Plotter tool and data acquisition (DAQ) module can help you to optimize the relevant measurement parameters.

The two measurement scenarios discussed in this webinar will equip you with the knowledge required to measure your devices and material samples with confidence.

Active Multi-Beam Antennas – Testing The Drivers For Advanced Satellite Concepts

Post Syndicated from IEEE Spectrum Recent Content full text original https://spectrum.ieee.org/webinar/active_multi_beam_antennas_testing_the_drivers_for_advanced_satellite_concepts

Current trends in the satellite industry are high-throughput satellites and mega-constellations. The enabling technology in both trends are phased array antennas (PAA). This webinar examines the fundamentals of PAA, upcoming test challenges and how key antenna test parameters for active antennas need to be revised. In the second part, the webinar investigates how the test solutions by Rohde & Schwarz answer these challenges and how they guide and support you through the different development stages up to antennas in the field as part of terminals.

1000BASE-T1 Automotive Ethernet Compliance Testing

Post Syndicated from IEEE Spectrum Recent Content full text original https://spectrum.ieee.org/webinar/1000_base_t1_automotive_ethernet_compliance_testing

This webinar will focus on 1000BASE-T1 automotive Ethernet compliance testing based on the Open Alliance (OA) TC8 specification for the physical layer. We will discuss the individual test cases for 1000BASE-T1 and look at the pitfalls that an engineer might encounter during test setup and execution.

For this video, we will be using a 2 GHz R&S®RTO oscilloscope, an 8 GHz R&S®ZND two-port VNA as well as the R&S®ScopeSuite automated test software.

Build Flexible, Cost-Effective ECU Production Test Systems

Post Syndicated from IEEE Spectrum Recent Content full text original https://spectrum.ieee.org/whitepaper/build_flexible_cost_effective_ecu_production_test_systems


Modern vehicles can contain over 100 ECUs controlling everything from the drivetrain to the ADAS systems. Each ECU needs to be tested individually as well as in conjunction with other components. This white paper discusses the five main tester design challenges and five common approaches to ECU production test to give you the background and potential strategies to follow the right one for your project.

5G NR Dynamic Spectrum Sharing (DSS): Overview and Test Challenges

Post Syndicated from IEEE Spectrum Recent Content full text original https://spectrum.ieee.org/webinar/5g_nd_dynamic_spectrum_sharing_dsss_overview_and_test_challenges

With the global 5G network rollout, dynamic spectrum sharing (DSS) between 4G and 5G becomes a focal point for mobile operators. DSS is an important enabler to quickly and cost-effectively build out robust 5G services, with broad coverage areas, using the existing spectrum in mid- and low-band frequencies. Base stations will simultaneously transmit LTE and 5G New Radio (NR) services in the same 4G band, and dynamically allocate resources based on traffic demand.  
DSS deployment is imminent. This webinar provides a technical overview of this important technology. It also dives into the test and measurement challenges, mainly for the physical layer, and addresses how to overcome them to accelerate development with confidence. 

Overview of learnings

  • Learn about DSS technology, including current 3GPP definitions and planned enhancements in upcoming standard releases. 
  • Find out about new test and measurement challenges and how to overcome them. 
  • Discover test solutions for verifying DSS development with confidence. 

How to design a least privilege architecture in AWS

Post Syndicated from IEEE Spectrum Recent Content full text original https://spectrum.ieee.org/webinar/how_to_design_a_least_privilege_architecture_in_aws

Implementing a least privilege architecture can reduce risk and minimize disruptions by allowing only the minimum required authority to perform a duty or task. Adding network micro-segmentation also restricts east-west movement to reduce the number of vulnerable pathways to applications. When combined, these methods create a granular security environment that provides strong attack resistance.

In this webinar, SANS and AWS Marketplace will present examples of how to set up a least privilege stack, covering such key issues as where to start and what to prioritize. Additionally, they will present real-world use cases of least privilege stacks and effective micro-segmentation methods that have been deployed in Amazon Web Services (AWS).

New Jitter Separation Method for Debugging High-Speed Interfaces with the R&S®RTP Oscilloscope

Post Syndicated from IEEE Spectrum Recent Content full text original https://spectrum.ieee.org/webinar/new_jitter_separation_method_for_debugging_high_speed_interfaces

The analysis of jitter components and its root cause is an increasingly important task for modern data communication systems. Increasing data rates on one hand and the cost pressure on board material, connectors, etc. on the other hand are driving factors for this analysis requirement.

There are several commercial products on the market, which analyze the jitter based on the reduction of the signal information to time interval error (TIE) measurements only.

This presentation suggests a new method to analyze and decompose jitter based on a parametric signal model. One key to this model is the estimation of the step response, which describes the deterministic behavior of the transmission system. The proposed algorithm takes all information present in the input signal into account. Once the model parameters are determined, various synthetic waveforms for different deterministic jitter components such as DDJ or PJ get reconstructed based on the original bit sequence. Finally, the individual jitter components are calculated based on the reconstructed waveforms, far more accurately, providing designers with analysis details previously not possible.

The new R&S®R&S jitter algorithm is implemented in the Advanced Jitter Analysis option for the R&S®RTP oscilloscope.

Hall Effect for Sensing and Materials Characterization

Post Syndicated from IEEE Spectrum Recent Content full text original https://spectrum.ieee.org/whitepaper/hall_effect_for_sensing_materials_characterization

Since the discovery of the Hall effect in 1879 by Edwin
Hall, it has been widely applied in measurements,
particularly in materials characterization and sensing.
Today it is being used to characterize new materials,
enabling the discovery of new phenomena, such as
the quantum Hall effect, spin Hall effect and, more
recently, topological insulators [1]. The Hall effect also
serves as a platform for many device applications,
such as current sensing in the automotive industry,
metrology, non-destructive inspection and testing, and
security screening applications.

Tips and Tricks on How to Verify Control Loop Stability with an Oscilloscope

Post Syndicated from IEEE Spectrum Recent Content full text original https://spectrum.ieee.org/webinar/tips_and_tricks_on_how_to_verify_control_loop_stability_with_an_oscilloscope

This webinar deals with measuring the control loop stability of switch-mode power supplies to achieve an excellent performance and to get confidence in the design. We will be discussing the main measurement concept, emphasizing the main topics, and describing the measurements from a pragmatist’s point of view. Presenting proper measurement setups and advising key solution differentiators complete this discussion on verifying control loop stability.

PAM4 Gigabit Ethernet Electrical SERDES Analysis, Debug and Compliance Testing

Post Syndicated from IEEE Spectrum Recent Content full text original https://spectrum.ieee.org/whitepaper/pam4_gigabit_ethernet_electrical_serdes_analysis_debug_and_compliance_testing

This white paper shows how the introduction of complicated figures of merit like SNDR, COM, and ERL, plus FEC (forward error correction) changes how we think about SERDES performance. SERDES tests require more than pristine signal generation and error counting. This paper presents the key SERDES tests, the need for FEC test patterns and the ability to insert errors that can probe Reed-Solomon FEC, and techniques for calibrating interference and jitter tolerance tests.

Designing the Test Strategy for Mission Critical Mesh Network Radios

Post Syndicated from IEEE Spectrum Recent Content full text original https://spectrum.ieee.org/webinar/designing_the_test_strategy_for_mission_critical_mesh_network_radios

Creating a robust RF test plan for tactical and other mission critical radio systems requires specialized techniques. The standard RF channel modeling used in typical cellular and wi-fi tests can fall short. Mission critical devices encounter higher doppler, lower frequency ranges, multiple device-to-device paths and other challenges that make standard channel models and test approaches unsuitable. This webinar will examine the unique aspects of tactical and other mission critical mesh radio systems and their impacts on propagation. It will conclude with guidance in creating a robust test methodology that systematically covers conditions that are difficult to validate in the field.