Testing Archives - In Compliance Magazine

Automotive EMC Testing: CISPR 25, ISO 11452-2 and Equivalent Standards, Part 1

This two-part article provides an overview of current automotive EMC standards and the intricacies of chamber testing automotive systems and components. In Part 1 of this article, we’ll provide details on the current editions of CISPR 25 and ISO 11452-2.

Evaluation of Intelligent and Non‑Static Power Sources: A Rational Clarification

Product standards, such as IEC 62368‑1 for ITC equipment, struggle to keep up with technology changes, even when they are designed to be adaptable – such as this hazard-based standard. Unexpected consequences can develop with the introduction of disruptive technology that takes advantage of a seeming loophole in a standard and move forward without getting a full evaluation under the standard. Fault managed power systems, such as PoE, push the standard in getting proper evaluation. This paper is a case study including a detailed proposal as to how to address an issue such as this within the standard.

Why Histograms and Free Run Matter

Oscilloscopes are key tools for power integrity measurements. With decreasing DC voltages and tolerances, techniques for accurate power rail testing have to be refined constantly. This article presents a new, widely unknown approach which reduces test times significantly. It combines waveform histograms and free run trigger mode, which lets developers capture and analyze a much higher percentage of rail activity than the traditional method.

Performing Proximity Magnetic Fields Immunity Testing

This article summarizes the changes in IEC 60601-1-2:2014 Amendment 1:2020 and describes how to conduct proximity magnetic fields immunity testing as required by the standard.

High Voltage ESD Protection for Automotive Ethernet Applications

Ethernet solutions have been popular in industrial and computing applications for several decades but were not widely adopted in the automotive area. Automotive ethernet enables fast and robust data communication, with high flexibility in bus topologies for multiple electronic control units (ECUs).

Tailoring Safety Into Audio Frequency Power-Line Susceptibility Testing

Solar Electronics founder Al Parker used to say about EMI testing, “There’s more than one way to skin a cat.” Here are a couple more.

Health Monitoring and Prediction of Cells in a Battery Module or Pack Under Operating Condition

The state of health of cells in a battery pack under operating condition is difficult to obtain through existing IEC and ISO standard methods under laboratory conditions. However, a cell state of health (SOH) profile shall be able to establish by the comparison of electro-impedance spectroscopy (EIS) generated statically versus dynamic operating data retrieved by battery management system (BMS) communication interface as fragments of EIS.