EMI/EMC Academy 8 Modules Interactive

Radiated Immunity Testing
Keeping Working in an RF Field

Radiated immunity (IEC 61000-4-3) checks that a product keeps working when bathed in an RF field — from nearby transmitters, radios and phones. This course covers the field/frequency/modulation, the chamber setup, how RF couples into victim circuits, and how to harden inputs, cables, grounding and firmware. It complements the Radiated Emissions and Pre-Compliance courses.

8
Modules
3h+
Learning Time
4-3
Standard
5
Case Studies

Core Modules

Work through these 8 modules in order. Each builds toward the capstone.

01
Radiated Immunity — What It Tests & Why
Why RF immunity matters, the sources (transmitters, radios, phones), and what ‘susceptibility’ means.
Lesson~25 min
02
Field Strength, Frequency & Modulation
3/10 V/m levels, the 80 MHz–6 GHz sweep, and 80% AM 1 kHz modulation — and why modulation is the key.
Lesson~30 min
03
IEC 61000-4-3: Standard & Chamber Setup
The anechoic chamber, uniform-field area, field probe, antennas, and EUT arrangement and monitoring.
Lesson~30 min
04
Coupling Paths & Victim Circuits
Cables as receiving antennas, demodulation at nonlinear junctions, and high-impedance victim nodes.
Lesson~30 min
05
Fixing Susceptibility at the Source
Filtering analog inputs, layout, references and selective shielding to reduce pickup and demodulation.
Lesson~35 min
06
Cables, Connectors & Grounding
Common-mode chokes, 360° shield bonds and ferrites — RI fixes mirror emissions fixes.
Lesson~30 min
07
Firmware & System Robustness
Watchdogs, plausibility/averaging checks, recovery, and the A/B/C performance criteria.
Lesson~30 min
CS
Pre-Compliance, Debug & Case Studies
A bench RI debug workflow, an interactive susceptible-band aid, and real case studies.
Capstone~40 min

Prerequisites

Foundational electronics, analog signal chains, and PCB layout, plus familiarity with the radiated-emissions test. Many RI fixes are the mirror image of emissions fixes.