10-meter anechoic chamber site
The 10-meter anechoic chamber is an EMC test laboratory designed for a 10-meter test distance. It is mainly used for electromagnetic compatibility testing of large-scale electronic systems and electronic products that need to meet specific industry standards.
Below is the detailed description:
Structure Composition
Main Anechoic Chamber
Typical internal shielded dimensions: 21 m (L) × 12 m (W) × 9 m (H).The wall absorbing materials consist of low-frequency ferrite absorbers and high-performance composite tapered ferrite absorbers. The movable floor absorbing materials are made of similar materials.A raised floor is usually installed on the ground, with a typical height of 50 cm.
Control Room
Used to house test instruments and control equipment. Operators monitor and perform tests inside the main anechoic chamber from this room.
Power Amplifier Room
Optional configuration, used to accommodate power amplifiers and other equipment, providing signal power for radiated immunity tests.
Other Auxiliary Facilities
- Shielded doors: available in sizes such as 2 m × 2 m, 3 m × 3 m, or customizable; a separate access door for staff is also provided.
- Waveguide windows: typically 600 mm × 600 mm (with flange).
- Built-in turntable: diameter of 4 m, load capacity of 3 tons.
- Antenna tower: maximum lifting height of 4 m.
Main Performance Specifications
- Shielding Effectiveness: Meets EN 50147-1 or better.
- Normalized Site Attenuation (NSA): Within 30 MHz–1 GHz, complies with CISPR 16-1-4 and ANSI C63.4, with selectable tolerances of ±3.5 dB, ±3.0 dB, ±2.5 dB.
- Field Uniformity (FU): Tested per IEC 61000-4-3, within 0–6 dB.
- Site Voltage Standing Wave Ratio (sVSWR): Within 1 GHz–18 GHz, ≤ 6 dB per CISPR 16-1-4.
- Ambient Background Noise (ABN): 10 dB below the limits specified in CISPR 22.
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