The right chamber for the measurement, not the biggest one.
A chamber gives you a quiet, known environment so a measurement can be repeated. Size, shielding and absorber all follow from what you test and which method you test to.
Which chamber does what?
Two things spoil a radiated measurement: signals from outside, and reflections from the walls. Shielding keeps the outside world out; absorber soaks up the reflections. Where the absorber sits makes the difference: a shielded room has none; a semi-anechoic chamber (SAC) has it on the walls and ceiling, over a reflecting metal floor; a fully anechoic chamber (FAC) has it on the floor too.
In the United States most digital devices are measured for FCC Part 15 using the ANSI C63.4 method (radio transmitters use ANSI C63.10), which is why the 3 m and 10 m semi-anechoic chamber is the workhorse of US test labs. Government programs working to MIL-STD-461 use a different, absorber-lined shielded enclosure, and antenna or wireless over-the-air work needs a fully anechoic room.
- Designed around your frequency range, test distance and product size
- Shielding, absorber, doors, filters and penetration panels as one package
- Site validation support on request (NSA, SVSWR), with the scope set per project
EMC chambers — the full range
Anechoic chambers (SAC / FAC)
Semi-anechoic and fully anechoic chambers for radiated emissions and immunity, in 3 m, 5 m and 10 m chamber classes (ANSI C63.4 and CISPR measure at 3 m and 10 m). Absorber is chosen for the frequency range you need to cover.
More on testups.com →Shielded rooms
Modular RF-shielded enclosures for conducted testing, control rooms and amplifier rooms — delivered with doors, filters, penetration panels and ventilation.
More on testups.com →GTEM cells
A compact way to run radiated measurements on small products when floor space rules out a chamber. Well suited to comparative checks during development.
More on testups.com →Shielded tents
Portable shielded space that goes up quickly, for on-site or temporary measurements when the equipment cannot travel to a lab.
More on testups.com →Explore the other areas
EMC labs
Turnkey EMC laboratories, from a pre-compliance bench to a full-compliance facility.
EMC systems
Emissions, immunity, transient and automotive EMC test systems.
EMC components
EMI filters, RF absorbers, LISNs, antennas, turntables and antenna masts.
Services
Testing, certification support, installation, refurbishment, validation and training.