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Extracting with Blind and Buried Vias |
  
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Extracting with Blind and Buried Vias |
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Extracting a netlist from Gerber and Drill data with Blind & Buried Vias. This Guide assumes that you have already imported gerber file(s) and drill file(s) into the workspace (see AutoLoad for quick loading).
Online Movie: Assign Layer Types & Stackup, Assign Blind & Buried Drills
Note: Netlist Extraction requires that all layer types are defined. To define layer types, goto menu: Setup | Layers Table...
Note: Netlist Extraction requires that you have at least 1 drill file (2 or more for blind/buried vias).
Note: Thru-Hole Drill layers use the layer type "Primary" while Blind or Buried Drills need to be assigned as layer type "Secondary"
Note: One of the primary reasons you want to extract a netlist from your Gerber data is so that you can then do a comparison against a CAD-generated IPC-D-356 netlist.
Command Sequence
Setup Blind and Buried Drill Relationships
1. Select menu: Setup | Blind and Buried Via Setup...
Note: All Secondary Drill layers (ie. Not Thru-Hole) must have the layers associated with it defined, using this dialog.
2. Assign Secondary Drill Layer (in combo box)
3. Click Button "Add" and select layer, to be associate with the current secondary drill.
4. Repeat Step#3 until all associated layer for the current secondary drill are defined.
5. If you have more than one secondary drill, click Button "Add Group", and repeat steps#2 - #4 for each additional secondary drill.
6. Press button OK when done.
Proceed with Netlist Extraction
1. Select menu: Tools | Nets | Netlist Extraction...
2. Verify Netlist Extraction Options, and press button Next.
3. Press button 'Finish' when done.
Note: The total number of extracted CAM Nets will be displayed on the Finish page.
Note: To Compare the extracted Nets against your own CAD generated netlist, goto Learn Guide: Comparing a CAM Netlist against an External Netlist.