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Parent page: PCB Objects
A placed Baseline Dimension
A baseline dimension is a group design object. It allows for the dimensioning of a linear distance of a collection of references, relative to a single base reference. The first point chosen is the 'base'. All subsequent points are relative to this first point. The dimension value in each case is therefore the distance between each reference point and the 'base', measured in the default units. The references may be objects (tracks, arcs, pads, vias, text, fills, polygons, or components) or points in free space.
Baseline dimension objects are available for placement in both the PCB editor and the PCB Library editors in one of the following ways:
PCB Editor:
PCB Library Editor:
After launching the command, the cursor will change to a cross-hair and you will enter dimension placement mode. Placement is made by performing the following sequence of actions:
Additional actions that can be performed during placement are:
This method of editing allows you to select a placed baseline dimension object directly in the workspace and change properties such as the position of its text and its reference points graphically.
When a baseline dimension object is selected, the following editing handles are available:
A selected Baseline Dimension
If the baseline dimension object is totally non-referenced (i.e. it is not attached to any reference design objects) click anywhere on it – away from editing handles – and drag to reposition it. While dragging, the baseline dimension can be rotated (Spacebar/Shift+Spacebar) or mirrored (X or Y keys to mirror along the X-axis or Y-axis respectively).
Non-Graphical Editing
The following methods of non-graphical editing are available:
Properties page: Baseline Dimension Properties
This method of editing uses the associated Baseline Dimension dialog and Properties panel to modify the properties of a Baseline Dimension object.
The Baseline Dimension dialog on the left and the Baseline Dimension mode of the Properties panel on the right.
During placement, the Baseline Dimension mode of the Properties panel can be accessed by pressing the Tab key. Once the Baseline Dimension is placed, all options appear.
After placement, the Baseline Dimension dialog can be accessed by:
After placement, the Baseline Dimension mode of the Properties panel can be accessed in one of the following ways:
Panel page: PCB List, PCB Filter
The PCB List panel allows you to display design objects from one or more documents in tabular format, enabling quick inspection and modification of object attributes. Used in conjunction with appropriate filtering - by using the PCB Filter panel, or the Find Similar Objects dialog - it enables the display of just those objects falling under the scope of the active filter – allowing you to target and edit multiple design objects with greater accuracy and efficiency.
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