[email protected] wrote: > > Good Afternoon, > > I have a brief question about IEC 801-3 test methodology: > When conducting air discharges, is it legitimate to discharge to pins on > unterminated > connectors ?
Yes, with testing done on equipment I've had tested. > What about a case where the air discharge is not directed at > the pins but rather the connector shell, but ultimately arcs over to the > pins ? Yes. The answer I got was too bad. > In this case, is this test point legit, or is this particular > dicharge deleted from the test data and repeated ? It is legit. Basically the test is ESD accessibility. Anything goes for anything that's accessible. Now in the case of terminators on connectors to protect them from ESD, I've had to use 'non-impedence' style terminators (the simple threaded kind with no resistor inside with the technical name "cap"). Why? I had instances where the resistor inside the terminator used for the impedence is a pathway to the circuitry it was trying to protect! In other words, a 75 ohm terminator did not block ESD suffciently with its 75 ohm resistor. So we had to change to plain BNC or F style caps. > As always, thanks to all who may reply, > > J.C. Fix, P.E. ******************************************************* ------------------------------------------------------- The comments and opinions stated herein are mine alone, and do not reflect those of my employer. ------------------------------------------------------- *******************************************************
