The EMC laboratory

SP has seven test facilities for EMC testing. The largest is the Faraday semi-anechoic test chamber, followed by Tesla, Edison, Weber, Hertz, Maxwell and Fourier, all with their speciality application areas. Faraday - for vehicle testing
Faraday - for vehicle testing

Faraday, our large test hall, is designed specifically for vehicle testing, with the Swedish automotive industry having contributed to its design.  In addition to testing of complete road vehicles, we also have many years' experience of testing forest machinery, earth-moving machinery, military vehicles etc. 

The Faraday test hall can accept vehicles and other items for testing weighing up to 60 tonnes.  Field strengths of over 100 V/m can be applied at up to 18 GHz, which is a requirement of certain automotive and military standards.  Radar pulses of several kV/m can be generated in the L, S, C and X bands.  The test turntable incorporates a 4-wheel chassis dynamometer having a sophisticated control system, with a further two roller outside the turntable.  Systems as GSM, GPS, DAB etc. can be emulated during tests. 

Tesla – a versatile test chamber

Tesla is a semi-anechoic chamber for small and medium-sized test objects.  It is used for such applications as immunity testing of IT and industry products up to 18 GHz.  In terms of size, it can accept objects up to the size of cars. 

Emissions are measured at 3 m or 5 m, as specified in the most important test methods.  The chamber has FCC approval and approval for type-testing of automotive components. 

The absorbent material is a combi-absorber, which guarantees good test conditions over a wide range of frequencies.  The chamber's performance has been measured by an independent third party, and its performance confirmed as exceeding the requirements of the standards.  Areas for conductive testing and ESD testing are provided outside the chamber. 

Edison - with substantial measurement facilities

Edison duplicates most of the facilities in Tesla.  The measurement distance is 3 m, and the laboratory can contain test objects up to the size of equipment cubicles.  Both Edison and Tesla are fully automated in order to deliver short set-up and measurement times. 

Weber - for automotive components

Weber is the latest addition to our test chambers.  Although designed primarily for CISPR25 and ISO 11452-x series testing of automotive components, it can also be used for testing industrial products. 

The chamber includes equipment for testing hybrid components and systems such as DC power units and high-voltage DC filters. 

Hertz - designed for high frequencies

Hertz is a fully anechoic chamber that has been designed for emission measurements in accordance with modern standards as well as for normal immunity testing.  It is also suitable for ERP measurements of radio transmitters.  All surfaces are covered with high-performance absorbers for antenna measurements and probe calibrations from 30 MHz up to high in the microwave region.  The facility also includes facilities for conductive tests and ESD testing.

Maxwell - for outdoor measurements 

Test site Maxwell is suitable for antenna calibration.

Maxwell is an open area test site with a ground plane and 10 m measurement distance. With its good performance, it is suitable for antenna calibration.

Fourier - for research

The Fourier test laboratory is not a shielded room, but a laboratory that is used mainly for research but also for some testing.  It includes facilities for measurements in a reverberation chamber for frequencies down to about 400 MHz. 

SP Technical Research Institute of Sweden, Box 857, SE-501 15 Borås Phone +46 10-516 50 00, E-mail