CISPR 16-1-4-2025 PDF

Full title and description

Specification for radio disturbance and immunity measuring apparatus and methods - Part 1-4: Radio disturbance and immunity measuring apparatus - Antennas and test sites for radiated disturbance measurements. This edition (2025) specifies the characteristics and performance of equipment used for the measurement of radiated disturbances and includes detailed specifications for antennas and test sites covering the CISPR indicated measurement range.

Abstract

CISPR 16-1-4:2025 (5th edition) provides the technical requirements for antennas, test-site designs and associated ancillary apparatus used when performing radiated disturbance measurements. It applies to equipment and test arrangements that support radiated emission measurements in the CISPR measurement range and updates definitions and apparatus requirements (including the introduction of a VHF-LISN and new reference-ground related definitions). The publication replaces the 2019 edition and its subsequent amendments and constitutes a technical revision.

General information

• Status: Published / Active international standard (5th edition).
• Publication date: 3 October 2025.
• Publisher: International Electrotechnical Commission (IEC) / CISPR technical committee.
• ICS / categories: 33.100.10, 33.100.20 (Electromagnetic compatibility — Emission and Immunity).
• Edition / version: Edition 5.0 (2025).
• Number of pages: 346 pages.

Scope

This part of CISPR 16 specifies characteristics and performance requirements for apparatus and test sites used to measure radiated disturbances in the CISPR indicated frequency range (measurement equipment indicating range). It covers the design and validation of antennas and open area / semi-anechoic / reverberation test sites, related ancillary equipment items and definitions necessary to ensure repeatable, traceable radiated emission measurements. The standard is a basic EMC publication intended for use by product committees when determining applicable EMC tests.

Key topics and requirements

• Performance and characterization requirements for broadband and calibrated antennas used in radiated disturbance measurements.
• Specifications and validation criteria for test sites (open area test sites, semi-anechoic chambers, reverberation chambers) for radiated field-strength measurements.
• Definitions and requirements for new ancillary devices, including the introduction of a very high frequency line impedance stabilization network (VHF‑LISN).
• Added and revised definitions (for example: VHF‑LISN, reference ground, reference ground plane, TN‑C‑S power system) to improve clarity and applicability.
• Cross-references to measurement methods and uncertainty/statistical guidance provided in other CISPR 16 parts (notably CISPR 16-2-3, CISPR TR 16-3 and the CISPR 16-4 series).
• Editorial and drafting-rule alignment to harmonize terminology across CISPR 16 series documents.

Typical use and users

Used by EMC test laboratories, antenna and test-site manufacturers, test-equipment vendors, product standards committees, regulatory agencies and compliance engineers to specify, design, validate and operate test sites and measurement antennas for radiated emission testing. The standard is also referenced by product committees when defining applicable EMC tests for specific product families.

Related standards

Closely related to other parts of the CISPR 16 series, especially CISPR 16-2-3 (methods of measurement for radiated disturbance measurements), CISPR TR 16-3 (technical reports and guidance), and the CISPR 16-4 series (uncertainties, statistics and limit modelling). Other CISPR 16 Part 1 documents (eg. 16-1-1, 16-1-5) provide complementary apparatus specifications.

Keywords

CISPR 16-1-4, radiated disturbance, antennas, test site, semi-anechoic chamber, open area test site, reverberation chamber, VHF‑LISN, EMC measurement apparatus, radiated emissions, measurement uncertainty.

FAQ

Q: What is this standard?

A: CISPR 16-1-4:2025 is the 5th edition of the CISPR basic publication that specifies the characteristics and performance of apparatus (notably antennas and test-site requirements) used for radiated disturbance measurements.

Q: What does it cover?

A: It covers antenna performance and calibration parameters, validation and construction/acceptance criteria for test sites (open area, semi-anechoic, reverberation), and ancillary apparatus for radiated emission measurements, together with revised definitions and new ancillary device specifications such as the VHF‑LISN.

Q: Who typically uses it?

A: EMC/EMI laboratories, test-house engineers, equipment and antenna manufacturers, regulatory bodies and standards/product committees use it to design, validate and operate radiated emission test sites and to specify measurement apparatus.

Q: Is it current or superseded?

A: As published in October 2025, CISPR 16-1-4:2025 is the current edition and supersedes the 2019 edition and its amendments (Amendment 1:2020 and Amendment 2:2023). The IEC catalogue lists the 2025 edition as the active replacement.

Q: Is it part of a series?

A: Yes — it is part of the CISPR 16 series (Specification for radio disturbance and immunity measuring apparatus and methods). Other parts include the measurement methods (CISPR 16-2 series), CISPR TR 16-3 (technical reports) and the CISPR 16-4 series addressing uncertainty, statistics and limit modelling.

Q: What are the key keywords?

A: Antennas, test sites, radiated disturbance, EMC measurement apparatus, VHF‑LISN, semi-anechoic chamber, open area test site, reverberation chamber, calibration, measurement uncertainty.