Hi All, I have posted this month's Technical Tidbit, Crossing Ground Plane Breaks - Part 3, Immunity to Radiated EMI. It is at http://emcesd.com with the link being the picture at the bottom of the index page. In this article, the last in a three part series on the effects of paths crossing ground plane breaks, the effects of immunity to impulsive EMI fields are investigated. As one might expect, the data presented shows a significant loss of immunity to EMI for signal paths that cross a ground plane break as compared to paths that stay over a solid ground plane. You may find the data useful in convincing your non-SI/EMC engineering friends of this layout issue. Doug -- ------------------------------------------------------- ___ _ Doug Smith \ / ) P.O. Box 1457 ========= Los Gatos, CA 95031-1457 _ / \ / \ _ TEL/FAX: 408-356-4186/358-3799 / /\ \ ] / /\ \ Mobile: 408-858-4528 | q-----( ) | o | Email: doug@xxxxxxxxxx \ _ / ] \ _ / Website: http://www.dsmith.org ------------------------------------------------------- ------------------------------------------------------------------ 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