Stats

  • Locked Locked
  • Replies 3
  • Subscribers 164
  • Views 15512
  • Members are here 0
More Content
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Cross Section Chart

Wild

 Version 16.5 S017 (Latest Hotfix - 17)

Created a cross section chart, the top surface - Air is set to 63 mil, but the bottom surface is set to 0 mil.

Looked at the layout cross section  table, I do not see a way to change the top layer thickness - (air) to any value.

Any one else have this issue, and or a solution?

If not I will create a service request.

Regards,

Photo - screen capture of Layout CrossSection Table, and Cross Section created in the fab layer

i59.photobucket.com/.../Capture.jpg

  • I would look at a techfile output in a text editor to see if there is a thickness associated with the surface layer

    File >Export Techfile
    Give it a name and Export it
    Open the .tcf file in a text editor such as TextPad. Search for the Cross section part by looking for <crossSection>
    Under each layer there is a thickness listed.

    Example of what you might see.

            <attribute>
              <name>CDS_LAYER_THICKNESS</name>
              <value>63.00</value>
              <Origin>gBackEnd</Origin>
            </attribute>

    You could edit the thickness, save the file as a new techfile and then import it using File >Import >Techfile.

  • Thanks for the reply.

    Techfile has:

    <name>SURFACE_INDEX_0</name>
            <attribute>
              <name>CDS_LAYER_TYPE</name>
              <value>SURFACE</value>
              <Origin>gBackEnd</Origin>
            </attribute>
            <attribute>
              <name>CDS_LAYER_MATERIAL</name>
              <value>AIR</value>
              <Origin>gBackEnd</Origin>
            </attribute>
            <attribute>
              <name>CDS_LAYER_NEGATIVE_ARTWORK</name>
              <value>FALSE</value>
              <Origin>gBackEnd</Origin>
            </attribute>
            <attribute>
              <name>CDS_LAYER_IS_SHIELD</name>
              <value>FALSE</value>
              <Origin>gBackEnd</Origin>
            </attribute>
            <attribute>
              <name>CDS_LAYER_THICKNESS</name>
              <value>0.000</value>
              <Origin>gBackEnd</Origin>
            </attribute>
            <attribute>

    Looks like it is set to 0.000 (Note this is the first occurance of the CDS_LAYER_THICKNESS in the file.

    In the IPC356 file the board thickness is defined correctly.

    My current fix is to edit the text directly in the fab layers, however it would be nice to understand where this came from.

  • Follow up:

    After I edited the text in the cross section chart:

    When I recreated the Cross Section Chart and the information is now correct.

     

Cadence Guidelines

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.