EMC testing models

Reverb chamber: how to choose ?

The choice of a reverberation chamber is made according to three main deciding criterion:

  • The dimensions of the equipment under test (EUT),
  • The operating frequency range,
  • The available power level and the desired field strength.

Large reverb chambers are designed for low-frequency measurements and offer attractive minimum normalized fields (field strength obtained with 1 Watt).

Small reverberation chambers can be used at high frequencies and offer high normalized field levels.

Eole: Siepel reverberation chambers models

Siepel has defined models characterized by the Low Usable Frequency (LUF):

EOLE 80 EOLE 100 EOLE 200 EOLE 400 EOLE 1000
Lowest Usable Frequency (LUF)
according to
MIL STD 461, IEC/EN 61000-4-21
DO 160, ISO 11452-11

≥80 MHz
≥ 80 MHz
≥100 MHz
≥ 100 MHz
200 MHz
≥ 100 MHz
with option
≥ 400 MHz
≥ 100 MHz
with option
≥ 1000 MHz
≥ 1000 MHz
Working volume
Length x width x height
4.10 x 3.30 x 2.00 m 3 x 2.44 x 2.11 m 2.72 x 1.69 x 2.11 m 2.36 x 2 x 1.16 m 0.72 x 0.56 x 0.40 m
External dimensions (include stiffeners) 9.57 x 6.80 x 5.40 m 7.65 x 5.17 x 4.52 m 4.88 x 3.76 x 3.12 m 3.15 x 3.15 x 2.90 m 1.02 x 0.86 x 1.28 m
Internal dimensions 9.30 x 6.10 x 4.96 m 7.44 x 4.96 x 4.11 m 4.84 x 3.72 x 2.86 m 3.11 x 3.11 x 2.86 m 0.98 x 0.82 x 1.24 m
Internal walls Steel Steel Steel or aluminium Aluminium Aluminium

EOLE 80

Applications: Defence / Automotive / Aeronautics

Tests: according to RTCA DO 160 and MIL STD 461

Between 80 MHz and 40 GHz

Guaranteed normalized E fields prediction for 1W (coaxial or waveguide loss not included):

According to DO160

According to MIL STD 461 and EN61000-4-21

EOLE 100

Applications: Defence / Automotive / Aeronautics

Tests: according to RTCA DO 160 and MIL STD 461

Between 100 MHz and 40 GHz

Guaranteed normalized E fields prediction for 1W (coaxial or waveguide loss not included):

According to DO160

According to MIL STD 461 and EN61000-4-21

EOLE 200

Applications: Defence / Automotive / Aeronautics

Tests: according to RTCA DO 160 and MIL STD 461

Between (100) 200 MHz and 40 GHz

Guaranteed normalized E fields prediction for 1W (coaxial or waveguide loss not included):

According to DO160

According to MIL STD 461 and EN61000-4-21

EOLE 400

Applications: Defence / Automotive / Aeronautics

Tests: according to RTCA DO 160 and MIL STD 461

Between (100) 400 MHz and 40 GHz

Guaranteed normalized E fields prediction for 1W (coaxial or waveguide loss not included):

According to DO160

According to MIL STD 461 and EN61000-4-21

EOLE 1000

Applications: Defence / Aeronautics

EMC radiated immunity test according to RTCA DO160 and MIL STD 461

Advantages:

Guaranteed normalized E-field prediction for 1W (coaxial or waveguide loss not included):

According to DO160

According to MIL STD 461 and EN61000-4-21

Customisable RVC

These models have been defined to meet the most common requirements of the market. Being a designer and manufacturer, we are able to adapt the standard dimensions to meet your specific needs or the constraints of the location. Upon request and specification, a customized solution or a combination of several RVC can also be offered.

Additional services for reverberation chambers

Option to reduce the low frequency: LUF extender

We have developed a solution to lower the working frequency of the Eole 200 & Eole 400 to 100 MHz without increasing the size of the CRBM; only the working volume is slightly reduced; ask us for more information!

Measurement system including RVC and instrumentation

Is your project requiring a turnkey system? We can advise you or define the whole test facility and determine the required output power for the amplifiers taking into account the losses of coaxial cables, harmonic filters, etc.

Reverberation chamber measurements

Please refer to the page dedicated to measurement services for more information

Our commitment to RVC performance

Regardless of the proposed model, we already indicate in our quotations the normalized E-field that will be obtained with 1 watt of injected power. After installation, verification measurements will confirm these expected results.