thanks for your help.... see below for pointed response > -----Original Message----- > From: Mike Reagan [mailto:[EMAIL PROTECTED] > Sent: Thursday, July 22, 2004 3:08 PM > To: 'Protel EDA Forum' > Subject: Re: [PEDA] Autorouting Techniques > > > HI Duane > > Before I can give an answer to all of your question....I need > to know did > you follow my step by step instructions for fanning out? I > typically can > route any design ( large ones with several thousand components ) in 5 > passes. The secret is the routing channels must be kept > open.
i did not do any fan out.. i tried this on the premise that it is a simple board which 99SE could autoroute.. this board has some 0805s and 14 pin SOICs.. are you recommending that i fan out the SOICs? > Secondly, > what is are you calling the "basic do" is this the do file Protel > generates? (DXP only). i am referring to a file which was installed by Electra (Basic.do). > I would stay away from assigning directives like "any > direction" this will > only complicate things by not steering the router to work for > you. Two > layer designs work as easily as multilayer ....as long as you > have open > channels. That is key. On very populated tight designs I > discount the > component side as a routing layer because the components are > in the way. i have components on both sides?! Perhaps it will route if i work on the component layout. But i still would like the router to follow a 12mil track-SMDpad rule and a 14mil via-SMDpad rule. Can you illuminate how to implement these special spacing rules? > > Electra will route 100 percent, as long as your rules make > sense. Take a > closer look at your rules and make sure they make sense. ie > can a 10 mil > line fit inside a 8 mil gap Let me know how I can help. > And thanks > for reading it. > > Mike Reagan > > > -----Original Message----- > From: Duane Foster [mailto:[EMAIL PROTECTED] > Sent: Thursday, July 22, 2004 4:18 PM > To: Protel EDA Forum > Subject: Re: [PEDA] Autorouting Techniques > > > Thanks for the white paper Mike. > > I have been curious to try the Electra autorouter ( mainly > because of your > enthusiastic plugs ), and so I read your white paper and got the demo. > > I routed a small double sided board with SMD on both sides. > I was able to > get 100% routed in 99SE using 10/10 and 12mil spacing SMD-track. 99SE > router will not do my desired 14mil SMD-via spacing, so i > manually adjusted > offending vias and cleaned up. > > I am trying Electra on the same layout and initially getting > 94% completion > and no adherance to any special clearance rules. > > I tried using your DO file and it seems ROUTE 5 is inadequate. Am i > misunderstanding your intention? > > I tried the basic.do file with an addition of "rule pcb > (clearance 12 (type > smd_wire)". I did not see any adherance to this special rule in the > resulting routing. > > I have tried using small grids and assigning layers to 'any' > direction, with > some improvement. > > I would be encouraged with Electra if I could get 100% routing with > adherance to my spacing rules. Any ideas or suggestions? Or > does Electra > shine on multi-layer stuff and this simple 2 layer board is under the > Electra radar? > > Duane Foster > > > -----Original Message----- > > From: edsi [mailto:[EMAIL PROTECTED] > > Sent: Wednesday, July 21, 2004 10:40 AM > > To: Protel EDA Forum > > Subject: [PEDA] Autorouting Techniques > > > > > > Hello All, > > > > Please feel free to visit www.konekt.com and read my white > > paper on how to use the Electra Autorouter with Protel 99SE > > and DXP products. I have been posting for some time now > > that this router is one of the best products available. I > > was asked by the ConnectEDA staff to write a paper for all > > you users that are afraid to try autorouters. I have not > > accepted any payment for this effort , my only interest is > > have better design tools available and to open a new dialog > > for Protel users. > > > > Enjoy the article > > > > Mike Reagan > > EDSI > > Frederick MD > * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
