Daan: I believe that the equivalence factors are also contained in an appendix to MIL-P-55110. Don Vischulis -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of d. terstegge Sent: Monday, September 30, 2002 8:03 AM To: [log in to unmask] Subject: Re: [TN] Ionograph measurements Thanks Ron, I'll have a look at these standards. Unfortunately so far nobody could give me the evidence that I'm allowed to use an "equivalence factor" when measuring ionic contamination. The document that Per-Erik referred to comes very close (it mentions how the "A" version of the Ansi J-std-001 had an appendix with a statement about the equivalence factor), and I'm still expecting a report from Graham. Best regards, Daan >>> [log in to unmask] 09/30/02 01:06pm >>> Daan, the info is shown in table VIII in MIL-P-28809. It probably is also in MIL-C-28809, but I cannot find my copy of "C" to verify that. Ron Dieselberg CMC ELECTRONICS CINCINNATI [log in to unmask] -----Original Message----- From: Graham Naisbitt [mailto:[log in to unmask]] Sent: Friday, September 27, 2002 11:54 AM To: [log in to unmask] Subject: Re: [TN] Ionograph measurements > Hi Technet, > > One of our customers is complaining that the upper limit for our > ionograph test is set at 3.1 micrograms/cm2 instead of the 1.56 > micrograms/cm2 that the IPC/EIA J-STD-001C prescribes is section 8.3.6. > > I know there exists a document (probably an IPC or MIL-spec) > explaining how the 1.56 limit should be corrected for the exact type of > machine. For the Alpha Ionograph 500M the conversion factor is 2, > resulting in the 3.1 micrograms/cm2 limit. > However I can't remember where exactly this information can be found, > and I don't even know if it's still valid. Does anyone has a clue for me > ? > > Daan Terstegge > Unclassified mail > Personal Website: http://www.smtinfo.net > > ---------------------------------------------------------------------------- -- > --- > Technet Mail List provided as a free 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/html/forum.htm for additional > information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 > ext.5315 > ---------------------------------------------------------------------------- -- > --- > Daan I have a copy that I shall dig out for you. If anyone else needs a copy let me know -- Regards, Graham Naisbitt [log in to unmask] Mobile: +44 (0)79 6858 2121 Concoat Limited - Engineering Electronics Reliability Web: www.concoat.co.uk AND www.concoatsystems.com NOTE: NEW ADDRESS :NOTE Sales: Millfield House, Fleet Road Fleet, Hampshire GU51 3QF UK Phone: +44 (0)1252 813706 Fax: +44 (0)1252 813709 Manufacturing and Head Office: Alasan House, Albany Park Camberley, Surrey GU16 7PH UK Phone: +44 (0)1276 691100 Fax: +44 (0)1276 691227 ---------------------------------------------------------------------------- ----- Technet Mail List provided as a free 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------- ----- ---------------------------------------------------------------------------- ----- Technet Mail List provided as a free 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------- ----- ---------------------------------------------------------------------------- ----- Technet Mail List provided as a free 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------- ----- --------------------------------------------------------------------------------- Technet Mail List provided as a free 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------