Altium designer creates the design rule for you.
Altium room definition between.
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Any net constraint is applied between any two primitive objects belonging to any net in the design.
Changing the values of the clearance constraints in altium designer.
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Same net only constraint is applied between any two primitive objects belonging to the same net e g.
Any net constraint is applied between any two primitive objects belonging to any net in the design.
Default constraints for the room definition rule.
There should be a room called roomdefinition change its name to bgawidth and copy that name so it can be used in a moment.
This is the most comprehensive of the three options and covers.
Between a via and pad on the same net or within the same track of a differential pair.
The design rooms submenu has a number of room definition commands.
It is a region that assists in the placement of components.
Display the placement section and then the room definition section.
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In this case we left the second object match set to all.
Creating the room rule.
Room locked allows you to lock the room in its current position within the design preventing accidental movement either manually or by the autoplacers.
A placement room is also a design rule.
A room is a primitive design object.
It is a region that assists in the placement of components.
To add a new width design rule right click on the word width and select new rule from the.
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While you can create the rule then define the room from the design rule dialog it can be more efficient to do it the other way around interactively create the room.
Once again we have set up our new net class test as the object match but in a clearance rule you have two object matches in order to check the clearances between both.
If you attempt to move the room when it has been locked a warning dialog will appear asking whether you wish to go ahead with the move.
Now go to the routing section of the rules dialog and display all the width rules.
Rectangular or polygon type rooms can be placed on either the top or bottom layer of the board and can either be placed empty associating components at a later stage or placed around components in the design automatically associating them to the room.
This is the most comprehensive of the three options.