[Useful Materials] Overview and Challenges in the 150kHz to 1GHz Range

An overview of the ALSE characteristic verification method adopted as a reference annex from the 4th edition.

This document introduces the verification method for ALSE (Absorber-Lined Shielded Enclosure) characteristics, which has been adopted as an informative annex in CISPR 25, 4th edition, along with its overview and features. It includes actual measurement results regarding known issues such as the discrepancy between reference values and ALSE measurement values in the long wire method, and also explains the reference method for comparison purposes with the long wire method. Please use this as a reference material to gain a deeper understanding of CISPR 25, a major emission measurement standard in the automotive field. [Contents] ■1. Introduction ■2. Model of Reference Values ■3. Verification Method ■4. Known Issues and Responses ■5. Supplement ■6. Conclusion *For more details, please download the PDF or feel free to contact us.

EMC Testing