Equalize Net Lengths

Parent process: PCB:EqualizeNetLengths

Applied parameters: None

Summary

This command is used to match the length of nets identified by the Matched Net Lengths design rule. First, make sure you have set up a Matched Net Lengths design rule, covering the nets whose length you wish to equalize.

Availability

In PCB Editor, run command Tools » Equalize Net Lengths.

Details

After launching the command, the track segments will be added to all nets in the set covered by the design rule, that are shorter than the longest net in the set. The track segments will be added using the style attributes defined in the rule.

The command will attempt to add track to these shorter nets until the specified tolerance condition in the rule has been met.

A design rule check will be performed, for this rule only, and the report (DesignName.REP) opened as the active document. The report will inform of how far outside of the tolerance each net in the set is.

Notes

This command will override differential pair routings and may alter tuned lengths. On differential pair or length tuned nets you may benefit from locking those routes out from this command.

You may find it easier to create a net class whose members are the set of nets you wish to equalize in length. The Matched Net Lengths design rule can then be set up to target this net class.

By setting a tolerance of 0mil in the design rule, this command will endeavor to make all nets governed by the rule the same length.

The success of the command depends on the amount of space available for the added track, the style chosen for the added track segments and the tolerance that is to be attained.

The report will be created in the same location as the PCB document and added to the Projects panel as a free document, under the Text Files sub-folder.