All, Do you find these components (in the negative quadrant) in the gerber or pick and place outputs? jmc
Ian Wilson wrote: > > At 10:09 AM 25/10/01 +1000, you wrote: > >Ian, it's actually pretty easy to "loose parts". > >We recently have had a situation where a group of components have been > >unknowingly moved into the negative region of the database as part of a > >move selection process early in the placement stage. It turns out that the > >syncroniser matches the parts and the pins for the nets....therefore no > >missing components.....The netlist exists in the database but the physical > >ratsnest does not (I assume the physical ratsnest is only valid for the > >database extents). The DRC was 100% ok. It would appear that the DRC makes > >the assumption that if there is a valid net but no ratsnest then the net > >must be connected. (ie no broken net) (also no clearance errors either) > > > >I would be interested if anyone else has had this problem. > >We use SP6, W98 > > > >We only found it by noticing an associated text string on the left hand edge > >of the database area when zoomed right out. > > I too have seen the moving components (not for a long time though), for me > at least, they have always existed in the netlist and the component > report. I had not noticed what happens to the ratsnest when a component is > off in ga-ga land but it still exists in the database, the netlist, the > component report, the ASCII PCB version and even component browser. I have > not checked if they exist in an exported spreadsheet. > > Thanks for the info on the ratsnets not showing for the "gone-ape" > components (technical term), > Ian Wilson -- >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >John M. Cardone Electro-Mechanical Dsgn. Engr. Grp. >M/S 278-100 Mechanical Engineering Section, 352 >4800 Oak Grove Dr. NASA / Jet Propulsion Laboratory >Pasadena, Ca 91109 >Tel: 818.354.5407 MailTo:[EMAIL PROTECTED] >Fax: 818.393.4860 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/[email protected] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
