Only the best!

Working with SIEPEL is working with the world-leading supplier of reverberation chambers. With more than 100 customers around the world, SIEPEL is THE reference when it comes to reverberation chambers and test systems.

Today, more and more standards in the fields of automotive, aeronautics or military testing are requiring the use of a reverberation chamber. Alongside an existing anechoic chamber, the reverberation chamber will become your best asset when performing immunity testing.

SIEPEL solutions cover the following standards:

  • RTCA/DO160G for aeronautics
  • MIL-STD-461F for military
  • IEC/EN61000-4-21 for automotive*

*A large number of car manufacturers (Nissan, PSA, Ford...) have released their own versions that is based on the IEC/EN61000-4-21. Contact us for more information and details.

The use of reverberation chambers in these industries is widely accepted and understood by the community.

Indeed, reverberation chambers will help testing laboratories and customers cut costs on expensive amplifiers


High field, low power

Reverberation chambers offer to use a low input power resulting in high field strength (Up to 170V/m with an input of only 1W)

SIEPEL guarantee

We are the only supplier with a 100% success rate with over 100 installations in the world. Our guarantee is our bond

Test system engineering and installation are part of our offer with power amplifiers, generators, spectrum analysers...


Main Features
  • Unique and full compliant software to allow measurements for EN61000-4-21, MIL-STD and DO160G for both EMI and EMS measurements
  • Expertise in turnkey systems with the capacity to assist in choosing the right instrumentation
  • Installation done by experienced Siepel employees
  • Real commitment of Siepel to deliver a reverberation chamber respecting the requested performances
  • Performances validated by a set of measurements at the end of the project with a traceable measurement report
  • Guaranteed normalized E-field for 1W input power considering a 3dB load in the EOLE
  • Best shielding effectiveness performances on the market in the desired working frequencies
  • Brushless stirrer motor giving the stirrer a very high reliability over time
  • Higher Q factor of the reverberation chamber due to Siepel single stirrer design
  • Guaranteed shielding effectiveness performances in the frequency range that matters with a minimum of 130 dB from 1 MHz to 1 GHz

  • Guaranteed maximum deviation of 4 dB deviation at 100 MHz and 3 dB from 400 MHz to 18 GHz (when testing according to EN61000-4-21)

  • Guaranteed field strength according to customer requirements




9.5 x 6.8 x 5.4m


80 MHz

E field:

40V/m @1GHz

EOLE 80 - Airbus France

EOLE 200


4.9 x 3.8 x 3.3m


200 MHz

E field:

60V/m @1GHz

EMC - EOLE 200 - VTUPV - Czech Republic (1)

EOLE 400


3.5 x 2.5 x 2.9m


400 MHz

E field:

85V/m @1GHz


EOLE 1000


1 x 0.9 x 1.3m


1000 MHz

E field:

175V/m @1GHz

EMC - EOLE 1000 - Swedish MoD

EMC Reverberation chambers

Download the datasheet presenting all of our EOLE reverberation chambers for more information.