Chamber Accessories
The Complete Accessory Ecosystem for EMC Chambers
Four absorber-lined walls and a conductive ground plane make an EMC chamber's basic RF environment, but a chamber only becomes a functioning, safe, and usable test facility once shielded doors, filtered power and signal penetrations, climate control, fire detection, and motorised positioning equipment are all integrated — each of these needs to maintain the chamber's shielding integrity while keeping the test environment safe and controllable for actual day-to-day use.
Shielded doors range from standard swing doors through to automatic vehicle-access gates for larger chambers handling full vehicle testing, each engineered to preserve shielding effectiveness at the door seam despite being a moving, regularly-opened component. Microwave and hybrid absorber panels line the chamber's interior surfaces to control internal reflections, essential to accurate radiated measurement. Filtered power and RF penetration points let power, signal, and data pass through the shielded boundary without compromising it — every cable or pipe entering a shielded chamber needs this kind of controlled, filtered penetration point rather than a simple unshielded hole in the wall.
Supporting equipment rounds out the range: motorised turntables rotate the device under test for multi-angle measurement, antenna masts position the measurement antenna at the correct height and can scan through a height range during a test, and magnetic shielding cabinets protect sensitive measurement equipment from ambient magnetic field interference within the chamber environment.
Frequently Asked Questions
Why do EMC chambers need filtered power and signal penetrations rather than standard cabling?
Any unfiltered conductor passing through a shielded chamber wall can act as an antenna, letting external interference in or letting the chamber's contained test signal leak out — compromising the chamber's shielding integrity. Filtered penetration points block this RF leakage path while still allowing power, signal, and data to pass through as needed.
What's the difference between microwave and hybrid absorber panels?
Microwave absorbers are optimised for higher-frequency absorption, while hybrid absorber panels typically combine different absorber materials or geometries to extend effective absorption performance across a broader frequency range, including lower frequencies where pure microwave absorber designs become less effective.
Why does a chamber need a motorised turntable and antenna mast rather than fixed positioning?
EMC test standards typically require measurement across multiple angles of the device under test and, for the antenna, across a defined height range — a motorised turntable and scanning antenna mast automate this multi-angle, multi-height measurement sequence rather than requiring manual repositioning between each measurement point.
