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Question About the application of wrist strap and bench mat, it is a basic requirement to ground. How can we measure whether the ground point itself is properly grounded to the ground? Where can I find an internet training center that has an ESD course? The best one is that they can issue a certification proved by ESD Association. - Anonymous, Sweden
Answer You can check the integrity of the grounding system with a basic ohmmeter. As long as the grounding cord doesn’t have a 1 megohm resistor in series, then the maximum resistance in the cord to ground circuit should be less than 1 ohm. Check this resistance from the common point ground to the physical power, earth, or dedicated ground. It should read less than 1 ohm. As far as Internet courses, I believe there are some companies like CBTC and maybe IMC that either have one or are working on an Internet ESD control course, but they are not ESDA approved. We will be coming out with a Internet based training course that is being written by a NARTE ESD Control Engineer and ESDA active member.
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