Pin Pair Width Check

For differential pairs and E-Nets that you select on the canvas, the Pin Pair Width Check command displays any track width errors for pin pairs. This is helpful when reporting errors related to use of pin pairs for Impedance Balanced Routing (IBR).

Errors are listed in the Width Errors (Pin Pair) dialog for the relevant track segment. For each track, the entire track is checked. For each track segment in the selection, the actual track width is compared to the value in the rule stack in Rule Editor. The following hierarchy of rules is used to check track widths.

1. Pin Pair
2. Net
3. Net Class
4. E-Net
5. E-Net Class
6. The default value that is set for the pin pair in Rule Editor.

Toggle on this command by selecting Report > Design Rule Checking > Pin Pair Width Check on the ribbon in eCADSTAR PCB Editor. On the canvas, select a track or via. The Width Errors (Pin Pair) dialog is automatically displayed. Alternatively, select an item on the canvas and then toggle on this command.

• Select Exit on the assist menu to toggle off this command.
• If you select a different item on the canvas, then the contents of the dialog are immediately updated.

 

 

For selected tracks, any errors are listed in the Width Errors (Pin Pair) dialog, described below. If there are no errors, then a dialog is displayed to confirm this. This displays the names of the relevant nets.

Item		Description
Width errors table		Lists any track width violations for the pin pairs in each track segment. Errors are shown if the actual width of the track is wider or narrower than the width defined in the rule stack in Rule Editor. If you select a row in the table, then the canvas is zoomed to show the selection. The current layer is changed to the layer of the selected track. If multiple rows are selected, then it is changed to the most common layer. Select multiple rows using the CTRL or Shift keys, or by dragging the cursor. Change the order of the columns in the this dialog by dragging them. If you click a column, then the displayed data is sorted by that column. Click the column again to reverse the sort order. The formatting which you set is reflected in the data that is saved or printed from this dialog.  If you change the size or position of this dialog, or the width of a column, then these changes are saved automatically when you close the dialog. However, the column that is used for sorting and the sort order are not saved. Note The following limitations should be considered. The errors displayed in the dialog are not updated automatically when routing or relevant constraints are changed. If you change the units or decimal places in the in Canvas View Settings dialog, then the new values are used when the dialog is next updated.
	Net	The name of the selected net. By default, the table is sorted by this value.
	Pin Pair	The name of the pin pair. The order of the pin names may be opposite to the value in Constraint Browser. To display the pin names as they are listed in Constraint Browser, point the cursor at a value in this column.
	Routing Width	The track width that is defined for the pin pair. The units and decimal places are used that are currently set in eCADSTAR PCB Editor.
	Actual Width	The track width of the pin pair that is selected on the canvas, rather than the value specified in Rule Editor. The units and decimal places are used that are currently set in eCADSTAR PCB Editor.
	Layer	The Conductor layer of the relevant pin pair.
	Track	The coordinates of the start and end points of the relevant track segment. They are separated using the "->" characters. The units and decimal places are used that are currently set in eCADSTAR PCB Editor.
Save As		Saves the contents of the dialog to a location that you specify. You can select from the following formats. .txt .rep .log .htm .html If you change the order of the columns by dragging them, or the order of the values in a column by clicking the column header, then these changes are reflected in the saved data.
Print		Prints the contents of the dialog. If you change the order of the columns by dragging them, or the order of the values in a column by clicking the column header, then these changes are reflected in the data that is printed.
Close		Closes the Width Errors (Pin Pair) dialog. Alternatively, press the Esc key. It is also closed if you switch or close the design. If you change the size or position of this dialog, or the width of a column in the table, these changes are saved automatically when it is closed.