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(EMC) Lamp Standard Radiation Chamber Replacement Method - CDNE Testing Method

Author.

LCS

Source:

Post time:

2026-02-02

CDNE testing method

In the lighting standards, the CDNE method has always been used to measure electric fields above 30MHz. The advantages of this method include relatively low equipment costs, easy test setup, and widespread use by many customers and factories. This method has been updated with relevant limits in CISPR 15-2018 and corrected to the CDNE method (formerly known as the CDN method). Compared to the darkroom method, the CDNE method has lower uncertainty and slightly higher pass rate.



 



 



 



 



 

Experimental setup


 



 



 



 



 

The prerequisite for CDNE method to replace darkroom method

EUT size less than 3 meters * 1 meter * 1 meter;

EUT cables shall not exceed 2 wires;

The rated power supply voltage shall not exceed 600 volts;

The clock frequency of EUT is less than or equal to 30MHz

 

 

Note: Not all products can use CDNE method!


 



 



 



 



 

Special reminder

Note: This method is only applicable to standards such as IEC/CE/TICK for lighting fixtures, and non compliant use is prohibited for non lighting standards.

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