The ETS-Lindgren SMARTTM 80 (Statistical Mode Averaging Reverberation Test-Site) Chambers use the latest developments in proven reverberation technology and experienced chamber construction to create an electromagnetic environment (EME) for immunity testing. Compared with other test methods, SMARTTM chambers offer the advantages of lower cost, higher field-to-input power ratios, and the ability to accept large test systems.
SMARTTM chambers operate by using their interior surfaces to reflect internally radiated RF fields. One or more rotating paddles, or tuners, are used to change the cavity boundary conditions. This creates fields having statistical isotropy and field homogeneity over a large working volume. ETS-Lindgren's patent pending tuner design ensures fast settling times and maximum through put during mode tuning tests. Due to recent advances in reverb statistical theory, the field measured at one point can be used to predict the maximum field at any other position.
The reverberation chamber has intrinsic properties of isotropy and homogeneity that provide several unique features for testing. Assuming proper configuration and a given uncertainty level; field measurement results will be the same regardless of where in the room they are taken; reconfiguration of the EUT will have minimal effect on those measurements; EUT measurements made between one or more chambers will be the same. The benefits are high measurement repeatability and test result reproducibility.
Adding to the appeal of reverberation chambers is that robust field strengths can be generated using less power than required by other test environments. The benefit is that less expensive amplifiers can be used without sacrificing performance. SMARTTM chambers are well suited to simulate the complex EMC of cavities, such as computer rooms, medical equipment rooms, aircraft avionics bays, and vehicle engine compartments. A SMARTTM chamber simulates all wave polarizations and incidence angles during a full test.
ETS-Lindgren understands reverberation chamber technology, and can design a chamber to meet your exact needs. We can work with you to detemine the correct chamber volume for achieving frequency range, select interior finishes to optimize mode density and Q-bandwidth, and recommend the right antenna and amplifier combination for field strength requirements.
Standard Configuration
Reverberation test per draft IEC 61000-4-21 (in steps from 80 MHz to 1 GHz) per the recommended procedure
Interior nominal shield-to-shield dimensions of 14.33 m x 7.32 m x 6.71 m (47' x 24' x 22')
Dielectric floor underlay. 1/8" thick
One single-leaf, Series 201, recessed contact mechanism (RCM), manually operated, RF-sheilded door, 1.2 m x 2.13 m (4' x 7') high
One connector panel, 20.32 cm x 20.32 cm (8" x 8")
Two 5.08 cm (2") threaded brass pipe penetrations with flange nuts and caps
Eight incandescent light fixtures with floodlights (electrical distribution not included)
Modular shielded room and support structure
Installation of enclosure and EMCO equipment
Shield test per MIL-STD-285, one frequency test at 1 GHz
Guaranteed performance and a one year limited warranty (one year on filters and moving parts)
Two Connector panels, 6" x 24"
One door maintenance kit
Two waveguide vents, 30.48 cm x 30.48 cm (12' x 12') in the ceiling
One threaded brass ground stud 1.27 cm (0.5") diameter x 12.7 cm (5") long
Four corner-mounted light fixtures with floodlights (electrical distribution not included)
One EMCO Model 2090 dual device controller
Options
One ULW 2 x 30 amp, 60 Hz power line RF filter
Two EMCO Model 4860 Z-Fold aluminum paddles and mounting shafts, 1.21 m x 1.52 m x 6.70 m (48" x 60" x 22')
Two 20 m fiber optic cables
Field uniformity testing per MIL-STD 461E
Reverberation performance evaluation per SAE J1113/27
Custom room sizes
Shielded control room
Fire detection and suppression systems
CCTV monitoring system
Electrical distribution
Additional filtering
Seismic structural package
Sliding and/or non0threshold shielded doors
Large equipment access doors
Specifications
ABSORBER TYPE
INTERNAL WORKING AREA
SHIELD ROOM INNER DIM
OVERALL STRUCTURE DIM
FT-100 Ferrite Tile FT-100c Ferrite Tile
(L) 13.4 m .... 44.0 ft
(W) 6.1 m .... 20.0 ft
(H) 4.9 m .... 16.0 ft
(L) 14.33 m 47.01 ft
(W) 7.32 m 24.01 ft
(H) 6.71 m 22.01 ft
SMART™ 80
