I tried for years to conduct HALT tests. "No need" they said, and I tried again and again to incorporate HALT into the R&D qualification process. Then came a customer, who required this in the contract. We made no preparations and passed. "You see", they said, "we told you". "Well", I said, "The system is over-designed". But they already went away. Regards Ofer Cohen Manager Quality Assurance, Reliability and Production Technologies Seabridge Ltd. - A Siemens Company Siemens COM FN A SB > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Phil Nutting > Sent: Tuesday, June 28, 2005 5:22 PM > To: [log in to unmask] > Subject: Re: [TN] HALT&HASS&MTBF > > Ingemar, > > We have uses HALT for initial design testing with HASS as follow-on > production testing. It is not cheap, but we were able to find > weaknesses in the design. IMO, by association, that should bring better > MTBF. We perform these tests on our complete assembly. That is where > we see the most interaction. > > Another test we are performing is the shipping packaging test. With the > completed working unit packed in it's special packaging materials, the > unit is placed on a shaker table for 1 hour and then dropped 12 times on > different faces, edges and corners. This has been very useful. An > electrically well designed unit is of no use if it can't get to the end > user without breaking. > > Phil > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Ingemar Hernefjord > (KC/EMW) > Sent: Tuesday, June 28, 2005 10:54 AM > To: [log in to unmask] > Subject: [TN] HALT&HASS&MTBF > > Anyone out there who use these and really got higher MTBF? And was it > worth the cost? > Not much discussed about in TN? Maybe wrong forum? > Just in case someone was applying HALT&HASS. > My very q is this: can you apply this on whole equipment, or just on > single functions or > reduced areas because of too many parameters? > Cheers > Ingemar Hernefjord > Ericsson Microwave Systems > > --------------------------------------------------- > 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 847-615-7100 > ext.2815 > ----------------------------------------------------- > > --------------------------------------------------- > 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 > 847-615-7100 ext.2815 > ----------------------------------------------------- --------------------------------------------------- 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 847-615-7100 ext.2815 -----------------------------------------------------