I have set a global clearance of 10mil and would like the router to follow a 12mil track to SMDpad clearance rule and a 14mil via to SMDpad clearance rule. I have these additional clearance rules set in 99SE, but they do not transfer to the DSN file.
thanks duane > -----Original Message----- > From: Mike Reagan [mailto:[EMAIL PROTECTED] > Sent: Thursday, July 22, 2004 4:05 PM > To: 'Protel EDA Forum' > Subject: Re: [PEDA] Autorouting Techniques > > > Duane > > The purpose of the article was to explore interactive routing....the > interactive part and most boring part of this is manually > fanning out. FAN > out everything, boring and time consuming I know. but the > rewards are no > post clean up and very clean routes > > Just say No to the basic.do FAN Out as I suggested, take my > word for it. > > If you have components on both sides and routing channels are > not open, it > doesn't matter if you manually attempt to route .....routing > channels must > be open > > > For your question.,,,," But i still would like the router to > follow a 12mil > track-SMDpad rule and a 14mil via-SMDpad rule" What are you calling > track-SMD are you referring to the clearance to the smd > pad? Trace > widths can be controlled in Protel using net classes or identifying > individual net names in the width rules set up. Open the > DSN file using > wordpad as I suggested, and do Control F to fine the net you > assigned a > rule to. If the net rule is not changed then the design rules > are not set up > in Protel. The DSN interface is excellent to ELECTRA and > Spectra. If the > design rules are set up, and there is ample clearance to push > a 12 mil line > thru, ELECTRA will route it in a microsecond. If it is not routing in > microseconds after you type in route, then the rules are in > conflict. It is > that simple ....correct rules, yeilds efficient routing > > Mike > > > > > > > -----Original Message----- > From: Duane Foster [mailto:[EMAIL PROTECTED] > Sent: Thursday, July 22, 2004 6:37 PM > To: Protel EDA Forum > Subject: Re: [PEDA] Autorouting Techniques > > > 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] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
