Abstract: Two EPT-200 high frequency noise generators are assessed with respect to the enhancement of the capability of the 2163m³ reverberation chamber in the range of high frequency. Their performances are tested in open loop acoustic environments, and the capability of the 2163m³ reverberation chamber is tested in the range of high frequency in close loop acoustic environments. The results show that the performances of the two generators meet the requirements and the capability of the 2163m³ reverberation chamber in the range of high frequency is improved.