This subject is relevant to the Allegro listserver, because Allegro's treatment of positive copper pours in RS-274X is different than a number of other packages. Although Gerbtool used to represent these pours in 3 layers, they have put them on one layer for several revisions. This did not change the fact that the three layers were still there, and caused Gerbtool to have some difficulty creating a correct netlist from the gerbers. For netlists and the ipc-d-356 check, v13.5 has worked well for me, as long as I did not let the tool change small arcs to linear approximations. v14.0 appears to have cleared up the problem, but I have only been running it for a couple of months. I think Mentor still ships Gerbtool with Expedition(Veribest), but almost never the latest version. Patrick Westfeldt, Jr. 720-406-0887 -----Original Message----- From: icu-pcb-forum-bounce@xxxxxxxxxxxxx [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of chris.ball@xxxxxxxxx Sent: Thursday, September 01, 2005 6:05 AM To: icu-pcb-forum@xxxxxxxxxxxxx Subject: [PCB_FORUM] Re: Gerbtool with Allegro Hi Richard- I use gerbtool (old version 8.0.2) to view Allegro 274x output. It breaks the Cu layers into multiple files that have to be turned on together to view properly. I had a board a month or so ago that showed a short between two planes when using gerbtool. It was a drawn (not flashed) glob in an area where one plane nested inside another. Scared the pants off me. Could find nothing in the .brd to produce it. Reran gerber several times, always showed. Eventually viewed the gerbers in GCPreview and it didn't show there. Made a pic of the problem and included a warning readme, just in case. I still use Gerbtool, mainly because I'm very familiar with it (delivered with Veribest, back in the day...). The incident I related is the only case I can think of where there was a problem. Why do you ask? Best Regards, -Chris "richard moffat" <richard.moffat@alliedtele To: <icu-pcb-forum@xxxxxxxxxxxxx> syn.co.nz> cc: Sent by: Subject: [PCB_FORUM] Gerbtool with Allegro icu-pcb-forum-bounce@freel ists.org 08/31/2005 08:41 PM Please respond to icu-pcb-forum Hi all I'd be interested to hear of any stories of success or despair when using Gerbtool to validate 274X. Contact me offline if you wish. Cheers, Richard NOTICE: This message contains privileged and confidential information intended only for the use of the addressee named above. If you are not the intended recipient of this message you are hereby notified that you must not disseminate, copy or take any action in reliance on it. If you have received this message in error please notify Allied Telesyn Research Ltd immediately. Any views expressed in this message are those of the individual sender, except where the sender has the authority to issue and specifically states them to be the views of Allied Telesyn Research. ----------------------------------------------------------- To subscribe/unsubscribe: Send a message to icu-pcb-forum-request@xxxxxxxxxxxxx with a subject of subscribe or unsubscribe To view the archives of this list please login at //www.freelists.org. Our list name is icu-pcb-forum or go to //www.freelists.org/archives/icu-pcb-forum/ Problems or Questions: Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx Want to post a job listing ? DON'T DO IT HERE! Better yet, join our jobs listing forum. SUBSCRIBE: icu-jobs-forum-subscribe@xxxxxxxxxx POST: icu-jobs-forum@xxxxxxxxxx ----------------------------------------------------------- ----------------------------------------------------------- To subscribe/unsubscribe: Send a message to icu-pcb-forum-request@xxxxxxxxxxxxx with a subject of subscribe or unsubscribe To view the archives of this list please login at //www.freelists.org. Our list name is icu-pcb-forum or go to //www.freelists.org/archives/icu-pcb-forum/ Problems or Questions: Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx Want to post a job listing ? DON'T DO IT HERE! Better yet, join our jobs listing forum. SUBSCRIBE: icu-jobs-forum-subscribe@xxxxxxxxxx POST: icu-jobs-forum@xxxxxxxxxx -----------------------------------------------------------