Bev, We've done quite a bit of exactly what you're asking about. I believe all requirements we have worked against are proprietary. Leading me to believe that there isn't public standards. We have some non-rocket-science IP on microsection prep, and imaging analysis. Electrical event detection/test vehicles are pretty common. From what we've found, your only other viable option is some sort of specialized CT scan. This makes even expensive (destructive) microsections look like a good option. IPC 5-32b (SIR/ECM) has an appointment with Brian and his group for the electrical side of the story. Chris --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------