Scott, PADS PowerPCB does have a problem writing the RS-274-X format. I believe this is to be corrected in the latest (2.2) release. To create a good RS-274-X file, I use PC-Gerber II. RS-274-X adds the aperture data to the beginning of the gerber file. John Bauer IDEO Product Development -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Scott Holthausen Sent: Thursday, May 14, 1998 8:59 AM To: [log in to unmask] Subject: [TN] Gerber format question Hello TechNet, Can someone explain the difference between the RS-274-D and RS-274-X gerber formats? As a secondary problem, I had a vendor ask me to send him a gerber file in RS-274-X format and when I looked at it with my gerber viewer, it looked different than the same file that was in RS-274-D format? Is this a problem with my design package (PADS PowerPCB) or my gerber viewer (Lavenir ViewMate)? Any and all info is appreciated. Thanks in advance. Scott Holthausen ################################################################ 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 web site (http://jefry.ipc.org/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ################################################################ ################################################################ 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 web site (http://jefry.ipc.org/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ################################################################