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The anechoic chamber is mainly used to simulate free space environment for EMC testing, and it can effectively eliminate external electromagnetic interference and a variety of reflective interference. Such 3m EMC anechoic chamber, can used to accomplish the standard 1m-distance test as MIL-STD-461F, GJB151/152A, and 3m EMC standard test for civil electronic and electrical products as civil standards GB9254-1998, GB/T 17626.3-1998.
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14KHz |
Magnetic field |
> 80dB |
|
100KHz |
Magnetic field |
> 90dB |
|
10kHz~1GHz |
Electrical field |
> 110dB |
|
300MHz~1GHz |
Plane wave |
> 110dB |
|
1GHz~ 5 GHz |
Plane wave |
> 100dB |
2. Performance of the anechoic chamber
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Normalized site attenuation bias (NSA) |
NSA < ± 4dB (GJB2926-97) |
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The test surface field uniformity (30MHz-1GHz) |
0 ~ 6dB (GJB2926-97) |
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Site voltage standing wave ratio (S－VSWR) ( 1GHz- 5 GHz ) |
S - VSWR ≤ 5.5dB (CISPR 16 - 1 - 4 : 2008 ( Ed 2.1) |
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Background level |
6dB under the required limited level (EN50147) |