Immunity Test of Electronic Device for Electrostatic Discharge

Abstract

Due to the increasing susceptibility of electronic device, the importance of electromagnetic immunity to interference also increasing. The basic task of testing the electromagnetic susceptibility of electronic device on the harmful interference is comparison of the data obtained by testing with data which are required by the relevant standards for the device. When the electronic device does not have a sufficient immunity can occur a deterioration of its functionality, temporary failure or even a permanent damage to the device. The aim of this paper is perform the test of electromagnetic susceptibility for the electrostatic discharge at the keyboard of the alarm system. Immunity test will be performed according to instructions in the standards of electromagnetic compatibility.

Electromagnetic Interference (EMI): Measurement and Reduction Techniques

“…62 ESD can occur due to factors such as improper insulation or defective grounding in the circuit of the instrument. It can hamper or interfere with the operations of an electronic device in three ways 63 :…”

“…Direct contact discharge Discharging through an air gap Indirect discharging through a vertical plane IEC 61000-4-2 is the internationally accepted system level standard for immunity testing of an electronic device against ESD 64 and the required test voltage levels for contact discharge and air discharge immunity testing, prescribed by it are shown in Table I. 63 X can take any value above, below or in between the specified values. X strictly depends upon the equipment specification.…”

“…Air discharge immunity testing is more complicated as reproducibility is not guaranteed by it. 63,65 Schematic of measurement setup for ESD immunity testing is shown in Fig. 11.…”