The Stub Routing Length Rules dialog is used to define the maximum routed distance from the edge of a pad to another node (junction, via, pad etc).
The general rule matching mechanism is described here.
Shortcuts
Menu: Setup
Default Keys: T
Command: Technology
Locating this option
Available from: Setup menu > Technology option > Rules - DFM/DFT - Stub Routing Length page
Using the Stub Routing Length Rules dialog
On selection, the Technology dialog opens, select Stub Routing Length. The existing Stub Routing Length Rules for the Technology being used will be presented.
Navigation
Press the New button to add a new entry to the list. To edit an existing entry, select it, the row will be underlined with a red line. The information can then be edited directly in the cell row or in the editing pane below it.
Remove items from the list by selecting it and pressing the Delete button.
Each line in the grid represents a separate rule, rules are used in priority from the top of the list down. Use the Up and Down buttons to re-order the rows to make them more or less significant. These rules are applied in the order defined in this list, until the first match is found. You should therefore have the more specific rules (in terms of layer, area and sub net) defined at the top of the list.
Using the Selected button will report where the selected rule is used in the Technology. Likewise, using the All button will report where all the rules in this dialog are used in the Technology.
Using the editing pane
The appropriate Stub Routing Length rule is found for each net item by working down the list of rules until the first match is found. Hence, the order of the rules is important. A match is when the specified Attribute Name and Match Value match attributes of a net item. So the Stub Routing Length rule must have the given attribute, and it’s value must wildcard match the value.
Max Distance
Max distance defines the maximum routed distance between the edge of the pad and another node.
Export and Import CSV
Use the Export CSV button to export the data in your PCB design into a CSV format file. Using the Export CSV option will provide you with a formatted template ready for you to edit in your own data.
Use the Import CSV button to import data back into the PCB design using a CSV format file.
The data in the file represents a spreadsheet of dialog contents with the data headings along the top row.
Units
The Units button allows you to locally switch between Metric and Imperial units whilst in this dialog. Once the dialog is closed, the units revert back to the original design units. If switching to different units to the design units, the value typed will be converted when you next enter this page.
Related Topics
Net Styles | Track Styles | Design Rule Check | Export CSV | Import CSV