EN 55032 / CISPR 32 Class A RE Limits

Radiated Emissions Requirements for Class A Equipment

This table details the Radiated Emission (RE) limit requirements for Class A equipment according to EN 55032 / CISPR 32, covering measurements up to 1 GHz and above 1 GHz for OATS/SAC, FAR, and FSOATS facilities. Essential reference for commercial and industrial EMC compliance.

Limit Visualization Curve

Envelope

Class A Equipment Limits

Levels in dB(µV/m). Scroll horizontally to view more.

Clause	Frequency (MHz)	Facility	Distance (m)	Detector / Bandwidth	Limits
Up to 1 GHz
A2.1	30 to 230	OATS/SAC	10	Quasi Peak / 120 kHz	40
	230 to 1 000	OATS/SAC	10	Quasi Peak / 120 kHz	47
A2.2	30 to 230	OATS/SAC	3	Quasi Peak / 120 kHz	50
	230 to 1 000	OATS/SAC	3	Quasi Peak / 120 kHz	57
A2.3	30 to 230	FAR	10	Quasi Peak / 120 kHz	42 to 35
	230 to 1 000	FAR	10	Quasi Peak / 120 kHz	42
A2.4	30 to 230	FAR	3	Quasi Peak / 120 kHz	52 to 45
	230 to 1 000	FAR	3	Quasi Peak / 120 kHz	52
Above 1 GHz
A3.1	1 000 to 3 000	FSOATS	3	Average / 1 MHz	56
	3 000 to 6 000	FSOATS	3	Average / 1 MHz	60
A3.2	1 000 to 3 000	FSOATS	3	Peak / 1 MHz	76
	3 000 to 6 000	FSOATS	3	Peak / 1 MHz	80

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Details

Test Setup & Technical Overview

Detailed engineering guide for Multimedia Equipment Radiated Emissions (Class A)

Technical Overview: Protection of Wireless Services

EN 55032 (harmonized from CISPR 32) regulates the electromagnetic compatibility of Multimedia Equipment (MME).

Radiated Emission (RE) limits are established to prevent electromagnetic interference from disrupting nearby radio, television, and wireless communication services in residential, commercial, and industrial environments. Restricting these emissions is crucial for maintaining the integrity and reliability of critical spectrum services.

Test Configuration: Antenna Height Scan & Distance

RE testing under EN 55032 is conducted on an Open Area Test Site (OATS) or a Semi-Anechoic Chamber (SAC). The Equipment Under Test (EUT) is set up on a non-metallic turntable at a height of 0.8 m for table-top equipment or 1.5 m for floor-standing equipment.

During the scan, the turntable rotates 360 degrees, and the receiving antenna is continuously scanned in height from 1-4 m. Measurements are taken at a distance of 3 m or 10 m to locate the absolute maximum field strength.

Interpretation of Limits: Class A vs. Class B

EN 55032 classifies equipment into Class A (industrial, professional, or commercial environments) and Class B (residential environments).

Class A limits are less stringent, as commercial environments generally exhibit higher ambient noise margins. In contrast, Class B limits are roughly 10 dB stricter across the frequency range to safeguard residential radio reception. Devices that pass Class A limits but fail Class B cannot be marketed for residential use and must carry appropriate warning labels.