Data Sheet

LABCENTER ELECTRONICS LTD.
140
Configuring Length Matching Options.
Other points to note about length matching.
You can match multiple tracks at the same time (e.g a bus).
The length of a track is shown on the status bar when it is selected.
If a track is part of a group that has been length matched the target length is also shown
in the status bar when you select the track.
The pre-production check will test all matched tracks against their target length and warn
you if their length has changed.
If you choose routes with vias the length (depth) of the via is calculated from the
thickness values you enter in the layer stackup.
The Selection Filter
Now that we have a completed board it’s worth spending a little time looking at the techniques
for selecting various object types on different layers.
The Proteus Layout module uses the Selection filter at the bottom left of the application window
to determine which objects are available for selection at any given time.
The left most button will determine whether the layer selector is active:
When this is toggled off the selection applies to all layers on the board.