Understanding CISPR 25: Automotive EMC Testing Guide
A comprehensive guide to CISPR 25 standard for measuring radio disturbance in vehicles, boats, and spark-ignition devices. Learn about test setups, limits, and compliance.
What is CISPR 25?
CISPR 25 is the international standard that specifies limits and measurement methods for the protection of on-board receivers from radio disturbances produced by electrical and electronic components and modules in vehicles, boats, and devices with internal combustion engines.
Key Test Requirements
The standard covers both conducted and radiated emissions measurements across a wide frequency range from 150 kHz to 2.5 GHz. Testing is performed in a shielded enclosure to ensure accurate and repeatable measurements.
Conducted Emissions
- Frequency range: 150 kHz to 108 MHz
- Measured on power supply lines and signal lines
- Uses artificial networks (LISNs) specific to automotive applications
Radiated Emissions
- Frequency range: 150 kHz to 2.5 GHz
- Measured using rod antennas, biconical antennas, and log-periodic antennas
- Test distance typically 1 meter from the equipment under test
TESTUPS Solutions for CISPR 25
Our AM-741R Active Monopole Antenna is specifically designed to meet CISPR 25 measurement requirements in the 9 kHz to 30 MHz range, providing engineers with the precision they need for accurate automotive EMC testing.