Please Delete the following if you are not interested in the Northern Illinois Chapter IPC Designer's Council Meeting minutes for 4/30/96 ______________________________________________________________________ The Northern Illinois Designer's Council met on 4/30/96 for it's third time. We had a large turnout with 33 people attending! The meeting opened up with a welcome/introduction from Karl Bates. Karl explained the the Designer's Council was important 1.) Provide a way to get accreditation for knowledge PCB Designers have gained through experience. 2.) Give "clout" to PCB Designers Nation-wide in the development of software and other standards (IPC Standards also) 3.) Network with other PCB Designers. 4.) Provide Educational meetings and forums to enhance PCB Design knowledge like: Technical seminars film On-site inspection and educatioal understanding of Photoplotting facilities PCB Fabrication plants PCB Assembly plants many others.... Our guest speakers were: Ron Bonninger- President of DEH Joseph Hennessey- Manufacturers Representative of Greenslade Sales Jonathan Pu- IS/CAD Manager of DEH The presentation was on THE VALUE OF RS-274-X AND IPC 356D The following is straight from the slide show presented by our guest speakers. ---------------------------------------------------------------------- "Building the Data Bridge" Northern Illinois IPC Designer Council Presented By: DEH Printed Circuits, Inc... April 30, 1996 What is DEH? "Through total employee participation DEH serves its customers as a world leading expert in the manufacturing know-how required to deliver quick turn, complex printed circuit boards required for the manufacturing of new and innovative technologies that our customers develop to serve fast growing markets" The DEH Business Focus - Focus on the customer - Focus on the continuing need to stay on the leading edge of manufacturing technology - Focus on quality and continuous improvement - Focus on the complex quick-turn prototype business - Focus on the continuing need to train and develop our employees - Focus on fast growing markets The DEH Management Team - Ron Boninger - President 10 years of technology driven business mgmt. - Wayne Price - GM of Operations 20 years quickturn pcb experience - John Lewis - Production Manager 15 years pcb mgmt/5 years quality - Chris Willems - Total Quality Mgr./ISO Mgmt. Rep. 5 years Motorola mfg and quality experience - Maggie Brown - Director of Sales 10 years of quickturn IBM PCB purchasing and sales experience - IS/CAD Manager - Jonathan Pu Data General pcb fabrication experience and Tectrol design experience - David Lackey - Eng/Lam/Fab Mgr former pcb business owner/15 years experience - Efrain Aguinaga - Night Production Mgr. 13 years quickturn pcb experience DEH Capabilities - 2 mil lines, 5 mil holes - Up to eight layers in 24 hours - FR4, GTEK, Teflon, Flex, Rigid Flex, TMM, Cyanate Ester, Polyimide and BT - Cymbolic Sciences Fire 9X70 1/8 Mil Resolution Photo Plotter - Orbotech PC-1490 for Automated Optical Inspection - Probot Series 6-D Flying Probe Electrical Testing - Non-destructive testing for process monitoring - Vacuum assisted high temperature multi-layer lamination - Gerber compare to IPC 356 or Neutral File (implementation phase) - Inverted Metallurgical Microscope - 24 hours a day, 6 days a week - All production done in-house - Redundant systems for all aspects of operation The Bottom Line "Meet and exceed Customer standards for quality, on-time delivery and customer service for a quick turn, prototype supplier of complex printed circuit boards" Objective of Meeting - "Build the Data Bridge" Between Design and Manufacturing Transfer useful data in efficient formats Use power of computer data analysis - Generate Discussion and List of Implementation Issues If simple it would have been done Partnership from both sides makes sense because everyone will benefit Two Building Blocks For the "Data Bridge" - RS-274-X (Imbedded Apertures) Combines RS-274-D and Aperture List - IPC-356-D (Neutral File) Important supplement to net list extraction from Gerber - These are not the only blocks for a better bridge Opportunities for improvement exist with drilling, routing, fabrication information, electrical testing and read-me content Open communication will continue to enhance the bridge building process - A small investment in time by manufacturers, software vendors and designers can result in enormous benefits What is Wrong with RS-274D Basically, old standard that does not take advantage of new technology Pad names interpreted by someone else, not designer who knows best Dcodes manually entered can create human error Dcode software conversion programs subject to error Version of conversion program issue Handling of unique codes or changes Time consuming manual entry Time consuming because of all double checks to avoid error conditions What is Right with RS-274-X Apertures (Dcodes) imbedded with Gerber Eliminates manual entry of Dcodes Standardizes software interpretation of Dcodes Dcode interpretation done by designer who knows correct output Viewing of file is made simple ( do not need separate aperture table) RS-274-X Implementation Issues - Determine capability of your CAD software with vendor assistance - Work with your PCB vendor to understand specific data needs of your application - Determine any composite images or custom aperture needs for which macros are required - Do trial data transfer run and confirm correctness of artwork Imbedded Apertures Conclusion ULTIMATELY SAVES TIME AND MONEY BY REDUCING TIME TO MANUFACTURE AND ERROR PROBABILITY All CAD/CAM vendors should be encouraged to support outputting and accepting this format Implementation should be done in partnership with your PCB manufacturer Why is CAD (Design) Driven Net List so Important A net list derived from the CAD data provides the information the manufacturer needs to determine if the board is being manufactured correctly By definition CAD data is manipulated to become Gerber data and then Gerber data is manipulated to become manufacturing data. Having a Net List derived from original CAD design data provides the manufacturer with a tool to verify errors have not occurred during the data translation process Electrical data not just artwork information is provided to manufacturer NETS DERIVED FROM DESIGN DATA ARE EITHER IN A NEUTRAL FILE OR IPC 356D FORMAT Why is Gerber and Fabrication data not enough Gerber was created as a means of communicating graphical information to a plotter Fabrication data required for manufacturing includes information such as drill, layering and rout Neither of these documents tells the manufacturer how the board is suppose to operate electrically... What it is really suppose to do Most Common package supplied today is Gerber and Fab data MANUFACTURERS HAVE COMPENSATED FOR THIS BY DOING NET LIST EXTRACTION Net connectivity is deduced by tracing paths and using drill information "NO NET LIST EXTRACTION IS AS GOOD AS USING THE ORIGINAL" Printed Circuit Design / June 1995 At best it is a derivative of a derivative and does not catch problems that may have occurred during the data translation process What are IPC-D-350D and IPC-D-356? - IPC-D-350D IPC standard for the "exchange of PCB data at the design, drafting, tooling, manufacturing and testing level". Goal of standard is to find a "neutral level of data exchange" Excellent job of representing how PCBs are manufactured (defining artwork requirements) Falls short on net list annotation - the "monk" got tired Standard never caught on - IPC-D-356 Finishes the work of IPC 350D Focuses on defining a standard format for the data required to do bare board electrical testing - Comments Standards are user community and vendor driven, created standards are unusual...Most data transfer issues have been industry solved. Primary benefit of using Standard is to create a net list neutral file from original engineered design data How is an IPC-356D File or Neutral File used? Its usage is most valuable at the front end of the PCB manufacturing process Software (On-line in some cases!) is available to do what is sometimes called Gerber Comparison Gerber Comparison compares the extracted net to the original net as defined by the IPC-356D or Neutral File If errors occur during design translation or the manufacturing process the Gerber Comparison process will identify them BEFORE THE BOARDS ARE MANUFACTURED. Additionally, as the board moves through the manufacturing process it can also be checked against the CAD derived net at various process points and finally at electrical test. - AOI of artwork - AOI of Inner Layers - Electrical test IPC 356D or Neutral File Implementation Issues - Determine capability of your CAD software with vendor assistance - Work with your PCB vendor to understand specific data needs of your application and types of formats accepted - If original schematic is modified during design process back annotation is important Conclusion - Designers and manufacturers working together can flawlessly go from concept/design to fabrication - Standards are not a necessity - we can make it work now by working together - From these efforts a defacto standard may be created - Northern Illinois Design Council Could be Driving force. ---------------------------------------------------------------------- Lisa Williams, of IPC, gave and overview of IPC. IPC began in Chicago by 5 Board Manufacturers. Lisa also went over the history of the Designer's Council. It began in Atlanta in 1992. Nationally, different chapters are working on various areas such as: Test Patterns Data Transfer Strategy Certification Salary Survey Data Package Schematics Writing a Book Lisa went over her handouts which included: Membership Application (Dues are $50) Please call Lisa if your looking to become a member and don't have an application form 847.509.9700 x379 email [log in to unmask] or mail your application form along with $50 and the chapter you want to belong, send to: IPC 2215 Sanders Road Northbrook, IL 60062-6135 IPC Designers Council Chapter Activities Certification-both study guide information and an explanation of what it is. Objectives by Certification Level A List of Chairmen from other IPC Designer Councils A Listing of Email Forums IPC Model Designers Council Chapter bylaws Minutes of IPC Designers Council Executive Board/Steering Committee Meeting held 10/1/95 in Providence, RI IPC TechWorks '96 Lisa also went over the Executive Board Council meeting held March 18th and 19th at the PCB Design Conference in Santa Clara, CA. The board discussed: 1.) Restructuring the Designers Council to allow individuals to join on (administrative headaches gone) 2.) Certification Program was modified to 2 Levels There will be another National meeting of the IPC Designers Cuncil and its Executive Board at DesignWorks, the design conference of the Designers Council. DesigneWorks will be held in Naples, FL, October 21-25. Charlene Dwyer, had everyone introduce themselves, their company, title and software used. A survey was passed out, not many responded so if you didn't, please copy the next section, fill out and email to [log in to unmask] --------------------------------------------------------------------- 1.) Are you interested in becoming a member of the IPC Illinois Designers Council? a.)If interested, what do you expect to get out of the council? b.)If not interested, we would like to hear your comments. 2.) Are you interested in the IPC Designers Certification program? 3.) Upon becoming a member, what would be the most convenient time for meetings. How often? (quarterly, monthly, ect.) Time of day (morning, afternoon, evening) Where? (IPC headquarters, Your business, roving) 4.) What council sponsored activities would interest you? Technical seminars on Surface mount design, high speed design, crosstalk, documentation, ect., field trips to photographers, fabricators, assemblers, other. 5.) Would you be willing to become an officer in the council? 6.) Would you like to be on our mail, email, or fax list? 7.) Other suggestions or comments: ---------------------------------------------------------------------- ---------- Ken Lil talked about the upcoming meeting to be held June 21 at Excel and AMS. Excel is a board house, and AMS is a photo imaging place. Karl ended with encouragement to participate and to sign up on the email forums. Karl Bates - Northern Illinois Designer's Council President Ken Lil - Northern Illinois Designer's Council Vice President Charlene Dwyer - Northern Illinois Designer's Council Secretary/Treasurer Lisa Williams - IPC representative