EMC FLEX BLOG A site dedicated to Automotive EMC Testing for Electronic Modules

Validation Testing for Compliance to Automotive EMC Specs/Standards - EMC Test Plan

29. March 2020 05:35 by Christian in EMC/EMI, Load Simulator
A successful electronic module validation testing depends on:DUT Design Performance (60%).Load Simul

A successful electronic module validation testing depends on:


  1. DUT Design Performance (60%).
  2. Load Simulator & Support Equipment EMC compliance (20%). 
  3. EMC Test Plan (20%).

The Load Simulator must be CISPR-25, ISO 11452-2, and ISO 11452-4 compliant.

EMC Test Plan:

  • Select representative samples covering multiple vehicle platforms having design differences.
  • Select all applicable test methods except those that:
    • are not required for certain module category as outlined by OEM spec selection matrix.
    • are in conflict with design requirements imposed by Component Technical Specification (CTS).
  • Define for each DUT Type/Model:
    • Known sources of RF noise.
    • Functions Performance Classification.
    • Operating Modes per Test Method:
      • DUT Configuration:
        • Block Diagram including grounding scheme.
        • Connectors Pinout.
        • Test Harness Type & Mate Connectors:
          • standard 1.7 to maximum 2 m.
          • customized (inserted banana jacks & plugs @ 20cm from DUT  connectors).
          • ESD mate connectors with 2.5 solid core wire.
      • Activation Method:
        • Load Simulator HW/SW Configuration - Operating Manual.
        • Other DUT Support Equipment (e.g pneumatic activation).
        • Other DUT Support Software.
      • Monitoring Method:
        • DUT Test Points.
        • Load Simulator Test Points.
        • LS Configuration (e.g. switches, I/O lines). More details in LS Operating Manual.
      • How to evaluate a HW/SW Reset condition.
      • How to evaluate successful Self-Recovery.
      • Measurable Parameters & Tolerances:
        • Support Equipment:
          • Resolution (e.g. use oscilloscope vs DMM during voltage transients/dips/drops).
          • Fiber Optic (CAN, USB, E-Net, LVDS, etc). Must be 200 V/m compliant.
        • Support Software:
          • Configuration, data files format.
      • Differences between DUT Reset and Support Equipment Reset.
      • Pass/Fail Criteria per Test Point and DUT Function.
    • Reporting Data type and format (e.g. tables, plots, pics).
  • Negotiate EMC compliance deviations based on known DUT design limitations driven by cost/delivery.