Jami, you need to learn the definition of a bug I guess. Bitch all you want about Protel, I don't care. Just be accurate. You're a professional, not some high school hack. You should be able to refer to a problem as either a bug or a poor implementation, a lack of implementation, or something you just don't like. There is a difference between all four.
"So here I will be content to simply to state that it is a SUPER GIANT ENORMOUSY GLARING DESIGN OMISSION OF UNPRECIDENTED MAGNITUDE AND PROPORTIONS." YES!!! Tony > -----Original Message----- > From: JaMi Smith [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, July 23, 2002 3:23 PM > To: Protel EDA Forum > Cc: JaMi Smith > Subject: Re: [PEDA] Microstrip footprints > > > Protel understands nothing of microstrip mitered corners or microstrip > components such as inductors. > > There are two parts to the problem, one concerning "unconnected" > copper, and > the other with "shorts". > > The first, unconnected copper, is similar to a question raised > here in this > forum a while back regarding "dual footprints" for a crystal, where a > "library component" needs to contain more "copper" than just a "pad" or > "hole", and in that particular instance, a "pad" and a "hole" connected > together with copper. > > This is a problem in Protel, and the current Official "soultion" > is to make > whatever copper "shapes" that you need in your "library > component", and then > "check" the box that says "include copper" when you are doing an "update" > (syncronizing) from the Schematic to PCB. > > You can also do a form of this in the "Netlist Manager" menu, > where you can > also include the connected copper. > > This will solve most Netlist problems and DRC errors (except the > short, for > which see below), but the problem is that you have to remember to do this > every time you "update", and I hate to use the "Netlist Manager" functions > because they "scare" me, having on occasion had it short nets together and > lose others completely, forcing me to go back to do another "update". > > The real problem is that you should be able to design copper > areas within a > "library component" and have those copper areas remain permanently > "attached", electrically (or netlist) speaking, to whatever > electical "pad" > of "land" it is connected to, but Protel simply isn't smart enough to do > that in it's current incarnation. > > We can only hope it will show up in DXP Service Pack 3 or 4. > > If I were to call this a "bug" here in this form, I would instantly be > trashed with reasons why it should not be so. > > So I will be content to state that it is simply a GLARING DESIGN OMISSION. > > A secondary issue that you will find when you do this is the "short". This > has been discussed at length here in this forum, and there really is no > acceptable way aroud the "DRC" error problem here (although you can search > the archives for the "Lomax Short", which some claim to be at least a > partial solution to the problem). > > Here again, the real problem is that you should be able to design copper > areas within a "library component" and have those copper areas remain > permanently "attached", even if it constitutes a short, but once again > Protel simply isn't smart enough to do that in it's current incarnation. > > Again, calling this a "bug" here in this form would simply > instantly invoke > responses. > > So here I will be content to simply to state that it is a SUPER GIANT > ENORMOUSY GLARING DESIGN OMISSION OF UNPRECIDENTED MAGNITUDE AND > PROPORTIONS. > > In answer to your current problem, I would simply design a "library > component" for both PCB and Schematic for your "miter", and > simply add it to > your schematics and also your pcb's and "live" with the DRC error. > > I think that you will find that this is what you will have to do with > virtually any "RF" parts such as these miters in transmission lines or > certain types of inductors that would constitute a short at "DC". > > Respecting resistors, capacitors and transmission lines, you might find it > useful to note that a 20 mil wide pad on an 0402 surface mount R > or C mates > perfectly with a 20 mil wide 50 ohm line derived with 12 mil of FR4 over a > ground plane (assuming you can tolerate FR4 in your design). > > JaMi Smith > [EMAIL PROTECTED] > > * * * * * * * * * * > > ----- Original Message ----- > From: "Daniel Webster" <[EMAIL PROTECTED]> > To: "'Protel EDA Forum'" <[EMAIL PROTECTED]> > Sent: Tuesday, July 23, 2002 10:31 AM > Subject: Re: [PEDA] Microstrip footprints > > > > > > Has anyone developed footprints for microstrip sections ? I have been > trying > > to do this with pads set to certain length and widths. Mitered > corners are > > particularly challenging to make as a library footprint. I have used two > > pads placed side by side at a 45 degree angle with the desired > measurements. > > If I add fills to this footprint to complete the desired pattern then I > will > > get DRC errors on my board once I load a netlist. It would be nice for > this > > situation to have various pad shapes available (user defined), > triangular, > > trapazoidal, etc. If anyone has found a solution, or knows where I can > find > > microstrip footprints, please let me know. > > > > Thanks, > > Daniel > > > > > > > > > > ************************************************************************ > > * Tracking #: 302C7AEC4E668747A3931191787D4A780F50FC92 > > * > > ************************************************************************ > > > * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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/proteledaforum@techservinc.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
