Please explain why the waveform specification at the CDN output section in IEC 61000-4-4 Ed3.0 became a rise time of 5.5ns and a half-value width of 45ns (whereas Ed2 had a rise time of 5ns and a half-value width of 50ns).

Please explain why the waveform specification at the CDN output section in IEC 61000-4-4 Ed3.0 became a rise time of 5.5ns and a half-value width of 45ns (whereas Ed2 had a rise time of 5ns and a half-value width of 50ns).

The waveform specification was changed in consideration of the wiring length (inductance) from the generator section to the CDN section.