TS ISO 11451-1

TS ISO 11451-1 establishes the general framework and terminology for vehicle test methods used to assess immunity of road vehicles to electrical disturbances caused by narrowband radiated electromagnetic energy. Rather than defining a single test setup on its own, this part serves as the common basis for the ISO 11451 series by setting out the general conditions and shared concepts used across the vehicle immunity tests in the series.

Its scope covers passenger cars and commercial vehicles, and it applies regardless of the propulsion system, so the same general approach is used for vehicles with spark-ignition engines, diesel engines or electric motors. The electromagnetic disturbances considered are limited to continuous narrowband electromagnetic fields, and the ISO 11451 series allows a broad frequency range for immunity testing.

Core concepts in vehicle electromagnetic immunity

In general technical terms, narrowband radiated electromagnetic energy refers to radio-frequency energy concentrated within a relatively narrow frequency region, where it can unintentionally affect nearby electronic systems. Vehicle immunity testing is intended to show whether such exposure causes malfunction, performance degradation or other unwanted effects in vehicle electronics, control units, communication systems and auxiliary equipment. Clear terminology matters because it supports consistent interpretation and comparison of results across laboratories and vehicle types.

What this part contributes to the series

• Defines the general conditions and basic principles for the test series.
• Provides the key terms used throughout ISO 11451.
• Frames immunity testing over a wide frequency range.
• Creates a common technical language across different vehicle categories and propulsion systems.