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Removable Media Module for ESD Waveform Acquisition

IP.com Disclosure Number: IPCOM000237780D
Publication Date: 2014-Jul-10
Document File: 2 page(s) / 122K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method whereby a set of components positioned within an equipment under test (EUT) can reveal the current or voltage waveform as the result of an electrostatic discharge (ESD). These important wave forms can show the paths and levels taken within the EUT that can help to pinpoint the location of an undesired response to ESD within the EUT.

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Removable Media Module for ESD Waveform Acquisition

A method is discussed whereby a set of components positioned within an equipment under test (EUT) can reveal the current or voltage waveform as the result of an electrostatic discharge (ESD). These important wave forms can show the paths and levels taken within the EUT that can help to pinpoint the location of an undesired response to ESD within the EUT. Basically, a full capture circuit is placed within the EUT that is triggered to start a data capture when triggered. The trigger signal passes into the EUT from a non-metal-clad fiber optic cable that is triggered externally by the ESD source. The fiber optic cable completely blocks the entrance of an external field from the ESD source except for the entrance hole that can be configured as a wave guide beyond cutoff. The current or waveform resultant from ESD is stored within the storage media, media removed, and data revealed with an appropriate software application. After analysis, the path and culprit may be determined.

    It is very difficult to monitor an internal ESD current as it travels through an EUT. Entrance of a conductive probe breaks the shielding effectiveness of the enclosure that confounds the results to be essentially unusable. Various methods have been used to obtain a response to the ESD current, but a method of capturing the full waveform is needed for complete analysis;
i.e., multiple threshold crossings, etc. The process explained uses a micr...