Ah Werner! You're out of your abode. Elucidate! Elucidate! Elucidate this Sir. So we can correlate design RULE/STANDARD selection with initial quality but not reliability, can we? Is there no correlation possible no matter whether 279 is used as part of the equation? How do we get there from here but for using 279 to run our own reliability testing? I just answered my question, didn't I? Anymore help greatly appreciated. This especially is true when attempting to correlate initial quality acceptance, using 610, with design rules and designing for reliability using 279. A bit confusing, don't you think? Earl --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d 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 delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------