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 New engineer, huge flash symbols problem 

Last post Mon, Mar 12 2007 8:48 AM by archive. 8 replies.
Started by archive 12 Mar 2007 08:48 AM. Topic has 8 replies and 1037 views
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  • Mon, Mar 12 2007 8:48 AM

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    New engineer, huge flash symbols problem Reply

    Hi, I am a new engineer working at the FAA. I am verifying a PCB layout and I have a huge problem with the flash symbols used in my padstacks. I have followed the manul and I am trying to just see the flash symbol apper on the negative plane where it should be connected. If you highlight nets in picture 1 the via and the plane are connected. In picture 2 you see that the other via lookl exactly the same on the plane as the connected via, pic 3 shows my padtack set up. Picture 4 shows the 2nd tab of the pad stack set up. And lastly picture 5 shows my drawing options. No matter what I do I cant see my flash symbol. it is much larger than my drill hole. This problem is present in ALL of my through hole pins. Can someone please explain to me wut is going on and how I can fix it so I can see as follows:

    1) All the flash symbols show up on the correct plane for the correct node.2) When I select the layer I can tell which holes are connected and which are not.


    1

    2

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    5


    Originally posted in cdnusers.org by jigshuk1
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  • Mon, Mar 12 2007 8:49 AM

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    RE: New engineer, huge flash symbols problem Reply

    sorry images didnt show up, here they are:


    Originally posted in cdnusers.org by jigshuk1
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  • Mon, Mar 12 2007 8:50 AM

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    RE: New engineer, huge flash symbols problem Reply

    again


    Originally posted in cdnusers.org by jigshuk1
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  • Mon, Mar 12 2007 8:50 AM

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    RE: New engineer, huge flash symbols problem Reply

    last

     thank you your help


    Originally posted in cdnusers.org by jigshuk1
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  • Mon, Mar 12 2007 9:51 AM

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    RE: New engineer, huge flash symbols problem Reply

    Interesting problem. I tried a replicate the problem you are seeing with not much success.
    I have some suggestions / comments:

    Is the any properties attached to the Via, like NO_SHAPE_CONNECT, which will cause the via not to connect to the plane?

    Is this happening on all Pins and Vias in the design or just a particular Via padstack, Pin Padstack, Plane Layer, etc.?

    Maybe there is something wrong with the Flash Symbol PAD_42_FLASH that you are using, have you tried to recreate it?

    Mike Catrambone
    UTStarcom, Inc.


    Originally posted in cdnusers.org by mcatramb91
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  • Mon, Mar 12 2007 10:20 AM

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    RE: New engineer, huge flash symbols problem Reply

    check your cross section. planes should be negative.


    Originally posted in cdnusers.org by KenM
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  • Mon, Mar 12 2007 10:59 AM

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    RE: New engineer, huge flash symbols problem Reply

    it looks your flash was created as a fill circle.


    Originally posted in cdnusers.org by vinhly
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  • Thu, Mar 29 2007 2:35 PM

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    RE: New engineer, huge flash symbols problem Reply

    You might check your shape parameters in the board file. If you have vias set to full contact, the flash will not be used.


    Originally posted in cdnusers.org by Hpattie
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  • Fri, Mar 30 2007 5:54 AM

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    RE: New engineer, huge flash symbols problem Reply

    Hi, I think you need to change your shape parameters, you just try to "select the shape" from shape menu and than selct yr shape than on right click you found a parameter option under this option we have a tab thermal relief connect where u can set the setting how would u like to connect your pins or vis with the shapes. just try i think this will help you to solve your problem


    Originally posted in cdnusers.org by mshakir
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Started by archive at 12 Mar 2007 08:48 AM. Topic has 8 replies.