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.

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.

Post Syndicated from IEEE Spectrum Recent Content full text original https://spectrum.ieee.org/whitepaper/new_vna_technologies_enable_millimeter_wave_broadband_testing_to_220_ghz

Application development in the mmWave frequencies for terrestrial communication, high-frequency device characterization, automotive radar and other technologies is increasing. As these applications climb from tens of GHz to over 100 GHz, the challenge of testing and characterizing the devices that enable new solutions is becoming increasingly complex. As broadband testing over hundreds of GHz of bandwidth is subject to repeatability and accuracy deficits, researchers and engineers are demanding better broadband solutions that help to overcome these challenges and simplify mmWave testing.

Post Syndicated from IEEE Spectrum Recent Content full text original https://spectrum.ieee.org/whitepaper/testing_5g_nr_devices_with_standard_waveforms

This white paper reviews the 3GPP defined 5G NR waveforms and describes how to generate standard-compliant waveforms to assess the impact of the whole transmit and receive chain. Using examples, you will learn how to generate NR-TMs (test mode) waveforms, incorporate a filter in the chain for ACLR (adjacent channel leakage ratio) reduction, compute error vector magnitude (EVM), analyze phased noise impact on modeling and investigate power amplifier impairments.

Post Syndicated from IEEE Spectrum Recent Content full text original https://spectrum.ieee.org/whitepaper/pcle_5_serdes_test_and_analysis

PCIe 5.0 operates at 32 GT/s with NRZ signaling, a huge challenge. With 36 dB of loss, CTLE and DFE at the receiver coordinate with Transmitter FFE—called “link training”—to open eye diagrams 10 mV. This paper describes the technology and guides you through the crucial SerDes tests 

Post Syndicated from IEEE Spectrum Recent Content full text original https://spectrum.ieee.org/whitepaper/keysight_wave_giveaway_2020

Join us for Wave 2020, a unique Keysight event featuring >100 test gear giveaways and tips & tricks designed to make you an engineering legend. Enter for your chance to win Keysight equipment, including oscilloscopes, power analyzers, digital multimeters, vector network analyzers, and more. You won’t want to miss a minute of this event – or your chance to score free test gear.