Integration Guide

Table Of Contents

LEON-G100/G200 - System Integration Manual

GSM.G1-HW-09002-F3 Preliminary Design-In

Page 87 of 101

2.5 ESD Immunity Test Precautions

The immunity to EMS phenomenon Electrostatic Discharge of the device (i.e. the application board where the

module is mounted) must be certified complying the testing requirements standard [9] and the requirements for

radio and digital cellular radio telecommunications system equipments standards [10] [11].

The ESD test is performed at the enclosure port [10] referred as the physical boundary through which EM field

radiates. If the device implements an integral antenna [10] the enclosure is intended as all insulating surfaces

housing the device. If the device implements a removable antenna [10] the enclosure port is limited to the

antenna port [10] hence the enclosure port comprises the antenna element and its interconnecting cable

surfaces.

The applicability of the ESD test depends to the device classification [10], as well the test on other ports [10] or

on interconnecting cables to auxiliary equipments depends to the device accessible interfaces and manufacturer

requirements.

Contact discharges [9] are performed at conductive surfaces whereas air discharges [9] are performed at

insulating surfaces. Indirect contact discharges are performed to the measurement setup horizontal and vertical

coupling planes [9].

In order to satisfy ESD immunity test requirements [9] [10] [11] performed at device enclosure complying the

category level [10] shown in the following table, some precautions should be implemented as described in the

following sections.