半电波暗室中辐射骚扰的测试距离汇总
Standards | Measurement distance | ||
3m | 10m | ||
EN 55011: 2009+A1: 2010 | 150 kHz-30 MHz | √ | - |
30 MHz-1000 MHz | √ | √ | |
1 GHz-18 GHz | √ | - | |
EN 55013: 2001+A1: 2003+A2: 2006 | 30 MHz-1000 MHz | √ | - |
EN 55014-1: 2006+A1: 2009 | 30 MHz-1000 MHz | - *1 | √ |
EN 55015: 2006+A1: 2007+A2: 2009 | 30 MHz-300 MHz | - | √ |
EN 55022: 2006+A1: 2007 | 30 MHz-1000 MHz | - *2 | √ |
1 GHz-6 GHz | √ | - | |
EN 61000-6-3: 2007 | 30 MHz-1000 MHz | - *3 | √ |
EN 61000-6-4: 2007 | 30 MHz-1000 MHz | - | √ |
EN 60601-1-2: 2007 | Same as EN 55011 | ||
Same as EN 55014-1 | |||
Same as EN 55015 | |||
EN 61326-1: 2006 | Same as EN 55011 | ||
*1 Note:
According to standard EN 55014-1: 2006+A1: 2009, this measurement may be made at closer distance, down to 3 m. An inverse proportionality factor of 20 dB per decade shall be used to normalize the measured data to the specified distance for determining compliance.
*2 Note:
According to standard EN 55022: 2006+A1: 2007, if the field-strength measurement at 10 m cannot be made because of high ambient noise levels, or for other reasons, measurement of class B EUTs may be made at closer distance, for example 3 m. An inverse proportionality factor of 20 dB per decade should be used to normalize the measured data to the specified distance for determining compliance.
*3 Note:
According to standard EN 61000-6-3: 2007, radiated disturbance may be measured at 3 m distance using the limits increased by 10 dB.
For standard EN 55015, frequency range for radiated disturbance is lower; for standard EN 61000-6-4, generally the equipment under test is larger, so the distance between antenna and the EUT is 10 m, not 3 m, in order to avoid near field effect.
