To solve the problem that the correlation of the radiated susceptibility testing results between reverberation chamber（RC） and uniform field are always poor

we derived a formula to calculate the critical radiated interference E-field strength

which ensured the equivalency of reverberation chamber and uniform field

based on the identical received power of the sensitive elements of the equipment under test（EUT） within different testing environments.Moreover

we put forward a new radiated susceptibility testing approach in RC and analyzed its difference compared to the uniform field.An experimental validation was performed in RC and uniform field

respectively

after taking a computer case as EUT and a monopole antenna inside as the sensitive element.The results show that the radiated immunity level obtained from the presented approach is identical for the two environments

and this new approach can be applied to the radiated susceptibility testing for complex and electrically large equipment.