A 9×6×6 m semi-anechoic chamber,
engineered to spec.
Welded-steel shielded enclosure with hybrid ferrite-tile and pyramidal-absorber lining on every interior wall and ceiling. Built for radiated emissions, radiated immunity, and ALSE-method automotive testing — calibrated, validated, and signed off by an ISO/IEC 17025 lab.
Built for full-compliance radiated testing — vehicle, harness, or sub-component.
This 9×6×6 m semi-anechoic chamber (SAC) is configured for the ALSE method defined in CISPR 25 and the radiated-immunity setups in IEC 61000-4-3 and ISO 11452-2. Floor remains a conductive ground plane; walls and ceiling are fully covered with hybrid absorbers — sintered ferrite tiles for the 30 MHz–1 GHz band, pyramidal foam stacked over the ferrite to extend absorption past 18 GHz.
The shell is a fully-welded modular galvanised-steel pan-panel system with a continuous RF-gasketted pneumatic door. Validated NSA, sVSWR, field uniformity, and shielding effectiveness across the full frequency range, with documented results delivered before site acceptance.
| Headline specification | |
|---|---|
| Chamber type | Semi-Anechoic (SAC) |
| Internal W × L × H | 9 × 6 × 6 m |
| Internal volume | 324 m³ |
| Frequency range | 30 MHz – 18 GHz |
| Shielding effectiveness | ≥ 100 dB ✓ |
| Absorber configuration | Hybrid (Ferrite + Pyramid) |
| NSA tolerance | ± 4 dB (CISPR 16-1-4) |
| sVSWR | ≤ 6 dB (1–18 GHz) |
| Field uniformity area | 1.5 × 1.5 m, 16-pt |
| Quiet-zone diameter | Ø 3 m |
| Measurement distance | 3 m (1 m optional) |
| Door | Pneumatic, RF-gasketted |
Six engineered subsystems, integrated and validated together.
Every chamber TESTUPS delivers is a single mechanically- and electrically-bonded assembly — shell, absorbers, door, HVAC, lighting, and grounding — designed and signed off as one system.
Welded shielded shell
Modular galvanised steel pan-panel construction. Continuous welded seams, RF-gasketted door, fiber-optic and waveguide-below-cutoff feedthroughs.
Hybrid absorber lining
Sintered ferrite tiles cover 100% of inner walls and ceiling, layered with pyramidal polyurethane foam to extend absorption to 18 GHz and beyond.
9 × 6 × 6 m clear interior
324 m³ of usable volume. Ø 3 m quiet zone, 3 m measurement distance, room for full vehicle, 5-axis bench, or harness setup.
Mast + turntable ready
Pre-engineered mounts for fiberglass antenna mast (1–4 m) and Ø 2 m flush-mount turntable, with cable trenches and fiber feed.
Pneumatic RF door
1.2 × 2.1 m clear opening, double knife-edge RF gasket, electromechanical interlock, panic-release, ≥ 100 dB seal performance.
Honeycomb HVAC + lighting
Waveguide-honeycomb ventilation panels and EMI-filtered LED lighting maintain ≥ 100 dB shielding while delivering 18 °C–24 °C, 30–70 % RH.
Hybrid lining on every inner wall and ceiling.
A semi-anechoic configuration: floor remains a conductive ground plane (CISPR 25 §6.3); the five remaining surfaces are 100% covered with the hybrid stack below.
Ferrite tile absorbers
SINTERED · 100 × 100 × 6.7 mm
NiZn sintered ferrite tiles bonded directly to the shielded wall. Provide reliable absorption below 200 MHz where pyramidal foam alone is too thin to be effective. Non-flammable, dimensionally stable, no off-gassing.
- Reflectivity
- −18 dB @ 100 MHz
- Coverage
- 5 surfaces · 100%
- Mounting
- Adhesive + steel clip
- Fire rating
- UL 94 V-0
Pyramidal polyurethane absorbers
CARBON-LOADED PU · 600 mm tall
Carbon-loaded polyurethane foam pyramids stacked over the ferrite layer. Dissipates higher-frequency energy through resistive loading and geometric impedance matching. Treated for fire retardance and dust suppression.
- Reflectivity
- −40 dB @ 1 GHz
- Pyramid pitch
- 200 mm
- Mounting
- Hook & loop on tile
- Fire rating
- NRL 8093 / UL 94
Specified, validated, and documented against the standards your customers audit against.
Acceptance package includes raw measurement data, calibration certificates, and a third-party validation report from an ISO/IEC 17025 accredited service provider.
Eight tests. One acceptance report. No surprises at first use.
Performed on-site after installation by a third-party ISO/IEC 17025 accredited validator. Results are bundled with calibration certificates into a single sign-off package.
From spec to acceptance in 18–24 weeks.
A single accountable team owns the build from RFQ through to first calibrated measurement.
Standards, frequencies, DUT envelope, site survey.
Shielding stack, absorber map, HVAC, grounding.
Modular pan-panels, ferrite, foam, door — pre-assembled.
On-site assembly, sealing, mast + turntable integration.
ISO/IEC 17025 acceptance test pack & sign-off.
A complete CISPR 25 / EN 55032 turn-key system.
Order the chamber on its own, or as the centerpiece of a fully-integrated TESTUPS test laboratory.
Send your specification — we'll respond within one business day.
Tell us your standards, DUT envelope, and target site. You'll receive a budgetary quote, suggested chamber footprint, and an indicative validation plan from an EMC engineer — not a sales rep.
Or email [email protected]