Hi guys, Valor has a tool that does this. However many companies that do not use Valor, or have scripts written to extract netlist signal name intelligence, send netlist data to the board suppliers under non-disclosure agreements for netlist to Gerber comparison. This sure beats the golden board technique which we've all been burned by at least once in the past! Rgds, Mike -----Original Message----- From: Robert D. Green [mailto:[log in to unmask]] Sent: Monday, May 24, 1999 1:23 PM To: [log in to unmask] Subject: [TN] Re[2]: [TN] Fab E/T Gerber comparisons I too, would like to know if any such tool exists. The D-365 file is generated at the same time as the gerbers by the layout/design checking software, hence there should be no difference. What there needs to be is a piece of software that will run the IPC-D-365 netlist against the original electrical schematic capture software such as ORCAD or ViewLogic. (or am I cooked again you CAD guys?) ------------------------------------------------------------- Robert D. Green - Supervisor, Test Engineering Hadco - Value Added Manufacturing e-mail [log in to unmask] ______________________________ Reply Separator _________________________________ Subject: Re: [TN] Fab E/T Gerber comparisons Author: Ed Cosper <[log in to unmask]> at smtplink-hadco Date: 5/24/99 3:24 PM Hi all, Got a question regarding electrical test net list Vs Gerber data. Our existing software package ( Tibor Darvis ) will generate a net list file from supplied gerber data. They call this snap grip and it is used as a base line for comparing net list ends to edited gerbers. The purpose is to have a customer supplied base line end point configuration to compare against after you have panelized and optimized customer supplied one up gerber data. My question is this. Does anyone know if there is a software medium that compares the end item gerber data to the design schematic? Basically my customer is asking me if I have a way to detect any designs problems in his supplied gerber files as it relates to the original design intent. Based on my conversations with my customer, apparently he has had problems in the past where a person or company that originated some plots inadvertently built in a short which our net list test didn't detect. He indicated that he could provide the IPC-D-356 net list file and feels that if we check the gerbers against this file we should detect any difference. However, It is my understanding that the D-356 net list file is generated from gerber data and should not be different. Any thought or help would be appreciated. Ed Cosper ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################ ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################