Reverberation chamber
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Reverberation chamber - 1

EMC REVERBERATION CHAMBERS www.siepel.com The reverberation chambers present the advantage of making it possible to operate immunity and emission tests in compliance with international standards on a wide range of frequencies, close to those of EMC standards related to anechoic chambers, without absorbers. They are thus an operational and compliant test facility for a reduced cost, which ensures enhanced testing competitiveness and a faster return on investment. However, the limitations in terms of lowest frequency of use for an MSRC with reasonable dimensions make this test setup hardly suitable for full-compliance EMI testing at low frequencies. Therefore, MSRC should not be seen as an alternative to anechoic chambers, for both test setups complete each other in terms of targeted applications. Furthermore, as soon as very high power levels are required, the limits of the market instrumentation (amplifiers, in particular) can rapidly be reached: For example, above 1 GHz, the latest versions of military and aeronautics standards impose tests at levels in the order of 3,500 V/m CW or even 6,000 V/m in pulse modulation, levels that cannot be achieved with conventional instruments. This technical constraint can be resolved using MSRC test facilities, since one of their most advantageous properties is the fact that high E-fields can be obtained in them from a low incident power (for example 100 V/m at 1 GHz for 1 W of input power on the connector of the field generating antenna in a 3.5m x 2.5m x 2.9m MSRC). STANDARDS BUSINESS FIELDS REVERBERATION CHAMBERS / SIEPEL REFERENCES 1/4 SIEPEL SAS – Parc d’Activités de Kermarquer - 56470 La Trinité-sur-Mer FRANCE Ph.+33(0)2 97 55 74 95- Fax +33(0)2 97 55 84 55 – www.siepel.com International Sales Manager: Matthieu GUESNÉ m.guesne@siepel.com Domestic Sales Manager: Stéphane TANGUY s.tanguy@siepel.com Customer Relations Manager: Stéphanie JÉGAT s.jegat@siepel.com –

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Reverberation chamber - 2

EMC REVERBERATION CHAMBERS www.siepel.com DIMENSIONS vs FREQUENCIES SIEPEL STANDARD MODELS* EOLE 80 Lowest Usable Frequency (LUF) Working volume External Dimensions (incl. stiffeners) Internal Dimensions *Customized models available upon request (larger EUT size, other LUF, …) Not real scale – See exact dimensions in the board above NORMALIZED E FIELDS Following normalized E fields are achievable with 1 watt input power. These values have to be considered for an empty chamber: coaxial or waveguide loss not included SIEPEL Model: Galvanized steel EOLE 80 the DO160 standard 2/4 SIEPEL SAS –...

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Reverberation chamber - 3

Michael Faraday's Heritage SIEPEL Model: Galvanized steel EOLE 200 1JEPEL SAS - Pare d'Activites de Kermarquer - 56470 La Trinite-sur-Mer FRANCE I International Sales Manager: Matthieu GUESNE m.guesne@siepel.com 1 Domestic Sales Manager: Stephane TANGUY s.tanguv@siepel.com Customer Relations Manager: Stephanie JEGAT s.iegat@siepel.com

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Reverberation chamber - 4

EMC REVERBERATION CHAMBERS www.siepel.com TURNKEY SYSTEMS SIEPEL provide complete test facilities comprising Reverb Chamber, software, instrumentation set-up and training. Based on the customer inputs (applicable standard, LUF, EUT dimensions, available instrumentation), SIEPEL can define the test facility globally and to determine the power of the amplifiers, taking into account the losses from coaxial cables, harmonic filters, etc. Measurement software All rights reserved. Information presented in this document are subject to modifications The key element when performing EMC testing in...

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