Darrell, Please allow me to try again phrasing my questions in detail. When a committee was discussing and working out on an EMC standard they usually first set up a reasonable model that MOST LIKELY represents the EMC situation concerned in the real life. Say, CISPR 22 Class B was based on a model that the radiated emission from the DUT should not interfere with the reception of an ordinary TV set located 10 meter apart. Then they figured out 30/37 dBuV/m limits for Class B DUT. Therefore, my questions are "What is the model that 8/4 kV of IEC 1000-4-2 are based on?" and "How did they make the measurements on the model and figure out the 8/4 kV specs?"
Thanks. Best Regards, Barry Ma ------------- Original Text From: "Darrell Locke (MSMail)" <[email protected]>, on 5/6/98 12:50 PM: Barry, Where does the standard IEC 1000-4-2 specify that 8kV and 4kV are the most likely? I have the 1995 edition. Thanks Darrell Locke Advanced Input Devices ---------- From: Bailin Ma To: [email protected] Subject: fwd: ESD level measurement on equipment List-Post: [email protected] Date: Wednesday, May 06, 1998 8:25AM A related question: How come the IEC regulated that +/- 8kV air & +/- 4kV contact ESD in IEC 1000-4-2 most likely represent ESD in the real life. They must have been based on many measurement data. Barry Ma ------------- Original Text From: "Campi, Mike" <[email protected]>, on 5/5/98 4:08 PM: To: We manufacture laptops and docking stations. Our QA department has discovered a problem that may be due to an ESD issue when we dock our laptop into the docking station. Is there a way of measuring the potential between these devices reliably? Is there equipment that can do this? and where can we get this equipment? Someone mentioned that a charge plate monitor may be able to do the job. Anybody have experience with this equipment? Thanks, Mike Campi Corporate Compliance Engineer Fujitsu PC Corp.
