Re: [PEDA] FCC and design for Manufacturability advice
Hello All, 1) Place filtering on all inputs and outputs (series R and a cap to GND) 2) Avoid traces running over GND and power plane breaks. You can play with layer stackup to do this. 3) Place series R's and potentially capacitors (to gnd) on all clock signals. Paul -Original Message- From: Mamdouh Wahab [mailto:[EMAIL PROTECTED]] Sent: Monday, April 09, 2001 5:56 PM To: Protel EDA Forum Subject: [PEDA] FCC and design for Manufacturability advice Hello all, We are in the process of finalizing a design layout, however we want to catch all unforseen surprises like meeting FCC requirements and manufacturability issues. Can anyone give us recommendations where to go from here. Thanks in advance M. Wahab * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To join or leave this list visit: * http://www.techservinc.com/protelusers/subscrib.html * - or email - * mailto:[EMAIL PROTECTED]?body=leave%20proteledaforum * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
[PEDA] FCC and design for Manufacturability advice
Hello all, We are in the process of finalizing a design layout, however we want to catch all unforseen surprises like meeting FCC requirements and manufacturability issues. Can anyone give us recommendations where to go from here. Thanks in advance M. Wahab * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To join or leave this list visit: * http://www.techservinc.com/protelusers/subscrib.html * - or email - * mailto:[EMAIL PROTECTED]?body=leave%20proteledaforum * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Re: [PEDA] FCC and design for Manufacturability advice
Mamdouh, to be succinct but polite, the issues are far too complex to sum up in even a long email. For FCC requirements it also takes some knowledge of your design, technology, required FCC class, etc.. It would be foolish to advise any measures with the lack of details provided. There is also usually not one but numerous solutions to the problems. Do you not have an experienced engineer to advise on this? Some of Paul's advise is pertinent to some designs but you also have to know how exactly to apply such measures or you could make matters worse. As for manufacturability, again a very lengthy topic. The best advice for a quick or simple guide, is to talk to your intended manufacturer. For some guide issues try the following web addresses. One is PCB DFM and the other is Assy DFM, both are somewhat limited to the publishing companies. So again, talk with your manufacturers. http://www.aimtronics.com/dfm_foyer.cfm http://www.merix.com/main_res.html Sincerely, Brad Velander Lead PCB Design Norsat International Inc. #100 - 4401 Still Creek Dr., Burnaby, B.C., Canada. V5C6G9. voice: (604) 292-9089 (direct line) fax:(604) 292-9010 email: [EMAIL PROTECTED] www: www.norsat.com > -Original Message- > From: Paul C. Brown [mailto:[EMAIL PROTECTED]] > Sent: Monday, April 09, 2001 3:03 PM > To: Protel EDA Forum > Subject: Re: [PEDA] FCC and design for Manufacturability advice > > > Hello All, > > 1) Place filtering on all inputs and outputs (series R and a > cap to GND) > 2) Avoid traces running over GND and power plane breaks. You > can play with > layer stackup to do this. > 3) Place series R's and potentially capacitors (to gnd) on all clock > signals. > > Paul > > > -Original Message- > From: Mamdouh Wahab [mailto:[EMAIL PROTECTED]] > Sent: Monday, April 09, 2001 5:56 PM > To: Protel EDA Forum > Subject: [PEDA] FCC and design for Manufacturability advice > > > Hello all, > > We are in the process of finalizing a design layout, however > we want to catch all unforseen surprises like meeting FCC > requirements and manufacturability issues. > Can anyone give us recommendations where to go from here. > > Thanks in advance > > M. Wahab * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To join or leave this list visit: * http://www.techservinc.com/protelusers/subscrib.html * - or email - * mailto:[EMAIL PROTECTED]?body=leave%20proteledaforum * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Re: [PEDA] FCC and design for Manufacturability advice
Sniff it out with a spectrum analyzer. I purchased one last year for pre-FCC testing and I love it. It's silly to put parts in places where they may or may not be needed. I can understand the advice having merit when tools aren't readily available. If you're in low volume that may be fine, but if you are building moderate to high volume, you should spend some money up front and buy the tools like I did, or hire a guy like me to sniff out your board, or take your "proto" to a certification lab and let them tell you what frequencies/tests your product fails. You can then determine a course of action from their initial report. Tony > -Original Message- > From: Paul C. Brown [mailto:[EMAIL PROTECTED]] > Sent: Monday, April 09, 2001 3:03 PM > To: Protel EDA Forum > Subject: Re: [PEDA] FCC and design for Manufacturability advice > > > Hello All, > > 1) Place filtering on all inputs and outputs (series R and a cap to GND) > 2) Avoid traces running over GND and power plane breaks. You can > play with > layer stackup to do this. > 3) Place series R's and potentially capacitors (to gnd) on all clock > signals. > > Paul > > > -Original Message- > From: Mamdouh Wahab [mailto:[EMAIL PROTECTED]] > Sent: Monday, April 09, 2001 5:56 PM > To: Protel EDA Forum > Subject: [PEDA] FCC and design for Manufacturability advice > > > Hello all, > > We are in the process of finalizing a design layout, however > we want to catch all unforseen surprises like meeting FCC > requirements and manufacturability issues. > Can anyone give us recommendations where to go from here. > > Thanks in advance > > M. Wahab > > > > * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To join or leave this list visit: * http://www.techservinc.com/protelusers/subscrib.html * - or email - * mailto:[EMAIL PROTECTED]?body=leave%20proteledaforum * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
