Can't you just measure the DC resistance? If it's a simple matter of the handle not mating, then DC resistance ought to tell you that. Andy > I am doing some work about EMC. I find out that if the handle and the > panel is not connected closely, the handle will be antenna for it is > isolated. The EMI will be very critical. The panel is connected to > PGND. I want know how to measure the AC impedance between the handle > and the panel. > ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu