CISPR 25 (EN 55025)

CISPR 25:2021

Vehicles, boats and internal combustion engines - Radio disturbance characteristics - Limits and methods of measurement for the protection of on-board receivers

Abstract

CISPR 25:2021 contains limits and procedures for the measurement of radio disturbances in the frequency range of 150 kHz to 5 925 MHz. This document applies to vehicles, boats, internal combustion engines, trailers, devices and any electronic/electrical component intended for use in vehicles, boats, trailers and devices. Refer to International Telecommunications Union (ITU) publications for details of frequency allocations. The limits are intended to provide protection for on-board receivers installed (per the manufacturer’s guidelines) in a vehicle from disturbances produced by components/modules in the same vehicle. The receiver types to be protected are, for example, broadcast receivers (sound and television), land mobile radio, radio telephone, amateur, citizens' radio, Satellite Navigation (GPS etc.), Wi-Fi, V2X, and Bluetooth. This document does not include protection of electronic control systems from radio frequency (RF) emissions or from transient or pulse-type voltage fluctuations. These subjects are included in ISO publications. The limits in this document are recommended and subject to modification as agreed between the customer (e.g. vehicle manufacturer) and the supplier (e.g. component manufacturer). This document is also intended to be applied by vehicle manufacturers and suppliers which are to be added and connected to the vehicle harness or to an on-board power connector after delivery of the vehicle. This document defines test methods for use by vehicle manufacturers and suppliers, to assist in the design of vehicles and components and ensure controlled levels of on-board radio frequency emissions. The emission requirements in this document are not intended to be applicable to the intentional transmissions from a radio transmitter as defined by the ITU including their spurious emissions.

NOTE 1 This exclusion is limited to those intended transmitter emissions, which leave the EUT as radiated emissions and are coupled onto the wire line in the measurement setup. For conducted transmissions on frequencies intentionally produced by the radio part of an EUT, this exclusion does not apply.

NOTE 2 It is usual for customers and suppliers to use radio regulation standards to manage the effect of spurious emissions from a radio transmitter unless limits of spurious emission are agreed in the test plan.

This fifth edition cancels and replaces the fourth edition published in 2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:

inclusion of new frequency bands,
deletion of the annex on TEM cells,
inclusion of annexes on measurement uncertainty,
overall improvement.

OTHER PRODUCTS IN THE SAME STANDARD:

EMSCOPE, 9kHz - 110MHz, 2 channel Receiver/LISN

EMI Measurements:

FFT-based dual-channel receiver
According to CISPR16-1-1
Peak, Quasi-Peak, and Average Detectors
Resolution Bandwidth Filters of 200 Hz, 9 kHz, and 120 kHz (CISPR), and 1 kHz and 10 kHz (MIL)
The fastest receiver in the market: Line and Neutral measurements with the 3 detectors simultaneously (6 simultaneous measurements)

EMSCOPE-RX2, 9kHz - 110MHz, 2 channel Receiver

EMI Measurements:

FFT-based dual-channel receiver
According to CISPR16-1-1
Peak, Quasi-Peak, and Average Detectors
Resolution Bandwidth Filters of 200 Hz, 9 kHz, and 120 kHz (CISPR), and 1 kHz and 10 kHz (MIL)
The fastest receiver in the market: Line and Neutral measurements with the 3 detectors simultaneously (6 simultaneous measurements)

EMSCOPE-RX4, 9kHz - 110MHz, 4 channel Receiver for 3 phase

EMI Measurements:

FFT-based dual-channel receiver
According to CISPR16-1-1
Peak, Quasi-Peak, and Average Detectors
Resolution Bandwidth Filters of 200 Hz, 9 kHz, and 120 kHz (CISPR), and 1 kHz and 10 kHz (MIL)
The fastest receiver in the market: Line and Neutral measurements with the 3 detectors simultaneously (6 simultaneous measurements)
Measure 4 lines of 3 phase LISN
The picture is shown with internal LISN [EMSCOPE RX4 LZ2]

Absolute EMC has designed low-cost pre-compliance systems to meet a wide range of RF emissions and immunity needs. Some form of pre-complaint testing is a must for any company that needs to demonstrate their product for EMC compliance. This enables companies to be responsive when issues happen and to also be proactive before going to the lab to better your chances of passing the first time.

The fiber connector cleaning kit allows for cleansing the fiber optic connector to ensure reliable operation of the LSProbes and other Fiber optic products.

VAMP 9243, 9 kHz - 30 MHz, Vertical Active Rod Antenna

Vertikal Active Rod Antenna
9 kHz - 30 MHz
BNC
reduced noise floor
with mounting nut for AM 9144 and rechargeable battery
Meeting requirements of MIL-STD-461, CISPR 25, and others

CISPR 25 (EN 55025)

Categories

Automotive +

Component +

International Product Standards +

International Test Standards +

Military & Avionics +

Safety +

Telecom/Wireless +

CISPR 25 (EN 55025)

CISPR 25:2021

Vehicles, boats and internal combustion engines - Radio disturbance characteristics - Limits and methods of measurement for the protection of on-board receivers

Abstract