• Tests for air and contact discharge according to IEC / EN 61000-4-2
• SESD 3025 is to be only used for Air discharge

In this method, the pulse is triggered by approaching the test specimen. The high voltage applied to the test tip is discharged abruptly, resulting in a very broadband high-frequency interference spectrum. Air discharge is used where contact discharge is not possible - e.g. on plastic housings.