SIST EN IEC 55016-1-1:2019/oprA1:2024 (Frag 2)

Overview

EN IEC 55016-1-1:2019/prA1:2024 (Fragment 2) - Discontinuous Analyzers is an amendment to the international standard for radio-interference measurements and the statistical methods used in electromagnetic compatibility (EMC) testing. Developed by CLC and aligned with IEC and CISPR committees, this document addresses measurement procedures for discontinuous analyzers, specifically focusing on the detection and analysis of discontinuous electromagnetic disturbances in the presence of continuous background noise.

The amendment is relevant to EMC professionals, manufacturers of electronic and electrical devices, and regulatory bodies overseeing compliance with EMC standards, ensuring reliable testing and accurate assessment of electronic disturbances.

Key Topics

• Discontinuous Analyzers: Clarifies the requirements and measurement techniques for equipment that detects and analyzes discontinuous electromagnetic disturbances.
• Modification to Clause 10.3.1: Articulates procedures for adjusting measurement setups when automatic Discontinuous Disturbance Analyzers (DDAs) are insufficient due to varying background noise from Equipment Under Test (EUT).
• Continuous vs. Discontinuous Disturbances:
  • Continuous disturbances act as background noise and can obscure the detection of short, transient or "click" pulses.
  • Procedures are included for distinguishing and measuring these short-duration disturbances despite continuous interference.
• Manual Measurement Techniques:
  • Guidance for employing a manually operated oscilloscope or manual DDA settings to correctly assess discontinuous disturbances.
  • Instructions on adjusting dynamic thresholds and triggering levels, helping to ensure more accurate measurement results.
• IF Reference Levels and Compliance: Recommends setting the intermediate frequency (IF) reference level and dynamic thresholds appropriately as per test tables, such as Table 14 and Table F.1, to evaluate duration and compliance of disturbances.

Applications

• EMC Testing Laboratories: Used as a procedural update for technical staff conducting compliance measurements on electronic equipment, ensuring that both continuous and discontinuous disturbances are correctly identified and quantified.
• Product Development and Certification:
  • Manufacturers gain guidance on measuring discontinuous electromagnetic emissions, a crucial aspect for product certification under regulatory frameworks.
  • Supports improved product designs that comply with EMC requirements by addressing real-world testing challenges.
• Regulatory Compliance: Assists notified bodies and market surveillance authorities in applying harmonized methods for testing and verifying compliance with EMC directive requirements for electronic and electrical devices.
• Instrument Calibration and Setup: Provides detailed recommendations for the calibration and setup of measurement instruments, such as DDAs and oscilloscopes, used in EMC testing scenarios.

Related Standards

• CISPR 16-1-1 (IEC 55016-1-1): Core international standard for specification of radio disturbance and immunity measuring apparatus and methods.
• CISPR 16-2-1: Concerns methods of measuring radio disturbance and immunity.
• IEC 61000 Series: General EMC testing and measurement techniques.
• EN 55016 Family: European standards equivalent to the CISPR 16 series, defining EMC measurement procedures and instrument criteria.

Key Terms: discontinuous analyzers, EMC testing, radio disturbance, CISPR 16, continuous disturbance, electro-magnetic compatibility, manual measurement techniques, DDAs, oscilloscope, IF reference level, compliance assessment.

By adhering to the updated procedures outlined in EN IEC 55016-1-1:2019/prA1:2024 (Fragment 2), organizations can achieve greater precision and reliability in measuring discontinuous electromagnetic disturbances, leading to enhanced product quality and compliance with international EMC requirements.