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Recent content by Scottm

  1. S

    flooding pad problem in OrCAD v16.5 PCB Editor

    It should work much like allegro, and if you select the shape then right click and got to parameters there should be an option in one of the tabs to select connection type. Select the smd pins and change to full contact
  2. S

    positive coppler plane and thermal pad in cadence 16.3

    yes soodamanikannan but you don't have to maually draw the thermals as allegro will do that for you depending on what you have set in global/local shape parameters.
  3. S

    positive coppler plane and thermal pad in cadence 16.3

    THe regular pad will be used and depending on what settings you have for the positive plane it will either add the spokes of the thermal connection or it will fully flood over the pad. The thermal pad in the padstack will only be used in negative planes.
  4. S

    how to open soldermask in etch file ???

    You will need to add a shape on the soldermask layer to create your clear area of soldermask, you will then need to add a shape on the pastemask layer to signify where you want the solderpaste to be
  5. S

    Which software to use to view .art Gerber files

    .art is the default name for gerbers that have been created by cadence allegro. Now until the OP posts the header no one really knows what it is !!
  6. S

    Creating plane separation in Allegro

    Re: allegro pcb create islands Have you got anti-etch for the same layer surrounding you inner plane shape ?
  7. S

    Refresh Problem in Allegro tool

    best i can say is look up the internet. I don't run windows 7
  8. S

    Refresh Problem in Allegro tool

    I have heard that some people in windows 7 that do not disable the windows 7 aero option have an issue with the refresh rate. Not usre if this is your problem but it may help.
  9. S

    Allegro - few questions

    Crevars is correct also, If you are using CIs for your schematic capture the pin numbers on the footprint must match the pin numbers in the schematic, otherwise you will have a problem when trying to get the netlist into allegro. Another small annoying thing in CIS is if you have multiple pins...
  10. S

    Allegro - few questions

    The only thing that is neede to map these two together is in the schematic symbol there is a property called PCB footprint, You put the footprint name into that field of the schematic symbol properties and when you create the netlist from CIS the footprint name will come through to allegro.
  11. S

    how to create layer stackup like this ???

    Your image of the stack-up is just a drawing. If you want to change it you will have to copy the shapes change the text to be whateve you want but it will have no effect on the cross section of the board.
  12. S

    [SOLVED] Differential pair assigninment

    It sounds like you are using Allegro L software. to have and use diff pairs you need to have Allegro XL.
  13. S

    How to generate cam data for PICK AND PLACE Machine in allegro

    YOu should be able to use the placement file. File - Export - Placement
  14. S

    polar command(allegro)

    you could place the first LED as per normal then copy it around using the polar command. You will then use the Logic/assign refdes command to place the remaining LED's

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