Gold Tie Bars Creation is a read-write DFM action. This action:
This new action is part of the Advanced DFM Actions, and requires a special license option: goldtie .
The action works in three stages:
For each net that needs to be processed, the action finds the feature that is closest to the (specified) edge of the board, and then tries to "draw" a polyline from this feature to the edge of the board.
If no test points need to be added, the action will extend every polyline by the value of the variable extension length . If test points need to be added, the action will draw the polylines up to the board limits.
Each line is assigned
the
.tie
attribute.
If adding a tie will create a short, and the problematic tie is inside the profile limits, the tie will not be added. The net that needs the problematic tie is reported in the Failed to Connect category.
The action sorts all the tie lines that were added to each side of the board. For each board side, it extends the lines and adds to them the test points and clearances. Each test point is assigned the .test_req attribute.
The connection between tie lines and test points will be made by straight lines and not diagonal lines. See the example below.