The electrostatic discharge simulator ESS-S3011A has Normal mode and Extra mode. Does calibration of the tester need to be performed in both Normal mode and Extra mode? Or is calibration in only one of the modes sufficient?

The electrostatic discharge simulator ESS-S3011A has Normal mode and Extra mode. Does calibration of the tester need to be performed in both Normal mode and Extra mode? Or is calibration in only one of the modes sufficient?

Calibration in either Extra mode or Normal mode is sufficient.

The reason is that the relay operation for generating the current waveform is the same in both modes, so the output current waveform is also the same.