laboratory
One. Uses:
Electromagnetic compatibility (EMC) tests can be performed on communications equipment, electronics, and electrical equipment, namely Electromagnetic Interference (EMI) and Electromagnetic Sensitivity (EMS) tests. Applicable frequency 30MHz-18GHz can be extended to 40GHz.
II. Main specifications and performance
1. Shielding effectiveness, meeting EN50147-1, GB12190-90.
Technical parameters are as follows: Frequency shielding effectiveness
14kHz>60dB magnetic field 100kHz>80dB magnetic field 100kHz>100dB electric field 1MHz>100dB magnetic field 1MHz>100dB electric field 100MHz>100dB electric field 1GHz>100dB
Plane Wave 10GHz>100dB Microwave 18GHz>100dB Microwave 100MHz>100dB Electric Field 1GHz>100dB&nb
2. Normalized field attenuation measurements from 30 MHz to 1 GHz at all positions in a 3 m-diameter cylindrical dead zone and normalized attenuation (NSA) values measured according to the 10 m method in accordance with ANSI C63.4-2003 procedures and provisions. Deviation from the theoretical value of better than ±4dB; 1GHz to 18GHz frequency range using the transmission loss (TL) test method to test, only tested at 5GHz, 10GHz and 18GHz three points, the normalized attenuation (NSA) value and the theoretical value deviation Better than ±4dB. At the same time meet the CISPR16, EN50147-2, CISPR22-1997, GB9254-1998, VCCIV-3/99.05 standard on field attenuation requirements.
3. According to IEC61000-4-3 procedures and regulations, in accordance with the requirements of EN61000-4-3:1996 and GB/T17626.3-1998, field uniformity testing is performed at 30MHz to 1GHz, and the standard field is 0.8 meters above the turntable - A vertical plane of 1.5mx1.5m within 2.3m, 75% of the 16 test points required for a 3m test distance, ie 12-point field homogeneity between 0-6dB, and 1GHz to 18GHz only tested at 5GHz and 10GHz It is tested at less than 3 v/m at 18 GHz.
4. According to CISPR22ClaasB (GB9254-2008), in the frequency range of 30MHz-1GHz, without the EUT, the measured environmental level value is at least lower than the specified Class B limit of 10dB.
