EMC - Open Area Test Site (OATS)

MIRA provides the complete range of automotive EMC test services on behalf of off-highway and road vehicle manufacturers and their supply chain. Our extensive suite of ISO 17025 accredited automotive test laboratories are used for development, design verification and certification tests. A dedicated team of over 50 qualified EMC technicians and engineers with more than 400 man years of automotive engineering experience aim to provide the best quality service at very competitive prices.

Off-board Vehicle Radio Frequency Emission Measurements

MIRA’s open area test site, sem-anechoic and fully-anechoic chambers provide the ideal environment for performing radio frequency measurements of the level of interference (RFI) from small components up to the largest road vehicle. The 40m by 12m ground plane of our OATS or 22m by 10m semi-anechoic chamber are used by vehicle manufacturers to ensure compliance with mandated maximum levels of permissible interference. Both laboratories have a large diameter turntable capable of rotating large vehicles, that provides a capability for measuring the directional gain of antennas or polar response of receivers at ranges of 3m and 10m. If you are seeking directional responses at distance of up to 100m then our open area test site can meet your requirements. If you want to measure the directional response of systems in a fully anechoic environment then our fully anechoic chamber

provides both 3m and 5m ranges.

On-board Vehicle RF Emissions Measurements

One of the key quality features that can define customers’ perception of your vehicle is the suppression of interference to on-board radio broadcast reception. As the complexity of vehicles’ electrical systems increase so does the potential for interference with radio reception. Although discrete electronic control modules and components may comply with mandated emissions limits their interaction with other on-board electronic equipment when integrated into the complete vehicle electrical system may result in unacceptable audible noise.

Using the AM/FM broadcast radio reception antenna fitted to the vehicle we measure emissions generated by the vehicle’s electrical system and through route cause analysis identify the source of emission. Our EMC design experts are available to identify the most cost-effective route to suppress interference, which may include modifications to the component or the vehicle’s wiring harness design and layout. MIRA can evaluate the EMC performance of all infotainment and wireless broadcast and data communications systems, such as LW, MW, FM & DAB radio reception, CD, tape, television, mobile phones, RKE and Bluetooth.