we are currently running into some problems with the our double sided e-test machine.. for the most part, everything runs perfectly.. no problems whatsoever.. but, there are a few problem part numbers that we cannot seem to get out from under. with these part numbers, we have checked everything out on the machine, and cannot find anything that would make these parts different than any other parts. the last thing i can think of is that there might be a problem with our fixture system. we currently use the post and donut fixtures. at some point, everett charles told us that it might be better to use the "christmas tree" type fixtures, so we ordered a set of those. not enough to switch over, but enough to test the setup. the problem is, when we run those sketchy parts, we end up with a ton of opens that aren't really there, and sometimes end up testing and retesting to get a good test.. when we manually probe the errors, they are in fact false, but this slows down the whole etest department to a complete stop.. my question is.. does anyone have any experience with both types of fixtures, and have you found that the christmas tree types are more stable than the post and donut types? any input is appreciated.. also.. one more question.. has anyone come up with a set of criteria for what makes the decision of type of fixture to use? thanks again! ____ Sergio T. Ruiz technology and MIS Philway Products, Inc. (419) 281-7777 x232 --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 847-509-9700 ext.5315 -----------------------------------------------------