3m Compliant EMC Anechoic Test Chambers (Semi-Anechoic)

Designed for accuracy. 3m Compliant EMC Anechoic Test Chambers (3m-SAC-C) is purposely designed for commercial EMC testing. Combining compliant emissions and immunity testing into one facility, the 3m-SAC-C provides the complete solution to ensuring your products meet both national and international standards for EMC compliance.


From the very start of product design to final compliance testing, having your own in house test facility becomes a fast, efficient and versatile way to demonstrate your products complies with applicable EMC standards and are compliant and ready to market.

3m Compliant Semi-Anechoic EMC Test Chamber - Global EMC

Choose The Test Chamber For

Electrical and electronic devices must comply with Electromagnetic Compatibility (EMC) standards for both radiated emissions and immunity in most countries. Our 3m Compliant EMC Anechoic Test Chambers ensure compliant emission and immunity tests can be performed to a wide range of standards.

Global EMC - CE Accreditation

CE Marking

EMC directive and FCC requirements.

Global EMC - Compliant Emissions Testing


Complaint Radiated Emission - Electro-Magnetic Interference (EMI) to CISPR 16-1-4 / EN55016-1-4.

EN IEC 6100 - Global EMC


Compliant Radiated Immunity - Electro-Magnetic Susceptibility (EMS) to EN/IEC6100-4-3.

CISPR 32 - Multimedia Equipment - Global EMC

CISPR Standards

Compliant for CISPR 32 (Multimedia), CISPR 11 (Medical) and CISPR 25 (Vehicle) standards.

Shaped Around Your Products

Our 3m Compliant EMC Anechoic Test Chambers are designed and manufactured to meet the dimensions, weight and required test standards of your products. With an external height of 5.5 meters, the test chamber can perform sweeping height antenna measurements from 1.0 to 4.0 meters whilst seamlessly coordinating with the flush-mounted turntable installed in the test chamber.


The modular shielding system enables the test chamber to be designed for larger product ranges by increasing the dimensions in 100mm increments. A large range of high-performance accessories allows all services and penetrations to be integrated into the shield, without compromising the shielding performance.


All test chambers require a point of entry. The design and manufacture of the shielded door is critical to both ease of use and shield effectiveness. Each shielded door is handcrafted in Great Britain to the exact dimensions required. This ensures the equipment under test can be easily transported inside the test chamber regardless of weight or size. With a full range of ultra-low friction manual swing, pneumatic or sliding doors entering and exiting a test chamber has never been easier.

Our 3m EMC Anechoic Chambers


A 3-meter test distance between the antenna and equipment under test is available in this test chamber. This test distance is widely used and accepted around the world in a large range of regulatory or standard-based test configurations.


The walls and ceiling are lined with anechoic material to absorb reflections of electromagnetic waves inside the chamber. This creates a stable and repeatable environment to perform testing, mimicking and open area test site (OATS).


Electromagnetic compatibility or EMC testing gives the manufacturer of a product the ability to demonstrate the ability of their product. That it can function without causing interference to other devices (Emissions) and can also work satisfactorily in the proximity of other electrical and electronic devices (Immunity). The 3m-SAC-C can be used for both Immunity and Emission testing.

Test Facility

The external construction is an EMI/RFI shielded room, using a Faraday cage principle. This is to stop unwanted signals from the ambient environment entering the chamber and causing interference whilst tests are being performed. It also provides a safe and legal environment for immunity testing to take place. This means that, unlike Open Area Test Sites (OATS), the 3m-SAC-C can be installed in Urban and Industrial environments where high levels of RF interference are present.

High-Performance Anechoic Lining

Ferrite Tiles & Absorbers – The walls and ceiling of the test chamber are precisely lined with the latest generation gapless Hybrid Pyramid absorbers and Ferrite tiles. The Pyramidal absorbers are precisely doped to ensure a smooth transition between the high performance of the Ferrite tiles at lower frequencies to the Pyramidal absorbers in higher frequencies. The “plug-in” base system of the absorbers means that individual absorber cones can be replaced if accidentally damaged during operation of the test chamber. This reduces the cost of repairs and time taken for the test chamber to become fully operational again.

Frequency Test Range







Minimum Dimensions







Shielding Effectiveness tested to EN 50147-1

Every Global EMC anechoic chamber is provided with a Faraday cage shield. The shielded enclosure provides both an area free from external ambient signals but also protection during Immunity testing for personnel working outside the chamber.

The measure of shielding performance is conventionally known as “shielding effectiveness”. 100dB in plane and microwave frequencies is generally regarded by most standards as a very high level of shielding suitable for scientific use.

Global EMC offer two levels of shielding Standard and Extended Performance. Standard performance is suitable for most shielding requirements and is typically seen in commercial testing situations. Extended Performance is usually used in high-performance Military applications along with certain high frequency needs.

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RLT Range Hybrid Absorber

GF102 Ferrite Tile

3m Compliant Chamber

3m Compliant EMC Anechoic Test Chambers (Semi)

Radiated immunity - Compliant to IEC/EN 61000-4-3 80 MHz – 6,000 MHz (18 GHz optional).

Radiated emissions - Compliant to CISPR 16-1-4 frequency range of 30 MHz to 6 GHz (18 GHz optional).

Shield effectiveness to EN 50147-1.

Designed and manufactured to the highest standards in Great Britain.

Bespoke solution upon request. Test facility can be configured to your exact requirements.

Up to 3 meters measuring distance between the Antenna and EUT.

Industry-leading low maintenance shielded door with copper-beryllium knife-edge seals.

Lighting, power filter, penetration and static ventilation panels all as standard.

Latest technology high-performance GF 102 ferrite tiles to all walls, ceiling and partial floor covering.

Moulded polystyrene pyramidal Hybrid Absorbers to all walls, ceiling and partial floor covering. (Absorber coverage as far as physically possible).

External Dimensions

9m (L) x 6m (W) x 5.5m (H)*

Shielded Pedestrian Door (Clear Opening)

1000mm (W) x 2000mm (H)*

Steel Structure

Self-supporting structure to industry standards.


Modular 2mm steel “pan” shield.

Frequency Test Range

30 MHz to 18 GHz (40 GHz optional).

Floor Loading (Standard)



1 x 32A 230V Single phase (2 line).

Penetration Panel Connectors

2 x Precision N type, & 2 x Fibre.

Honeycomb Vents

2 x 300mm (W) x 300mm (H) (static air).

Access Ramp

This feature is optional.


4 x LED Lighting 1 x Emergency light.

Power Distribution

4 x 230V AC DSSO Sockets.

3m EMC Anechoic Chambers Additional Options Include:
Turntable, mast, controller, Air conditioning / HVAC, Anti chamber (control room), Fume extraction, Fire detection, CCTV, White caps to absorbers, additional filters & Audio communication.
*All dimensions and quantities can be altered upon request (subject to compatibility).

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