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Documentation Altium NEXUS Documentation ... EOL - Design Objects Draftsman Design Objects

Transmission Line Table

Created: June 23, 2021 | Updated: June 23, 2021 | Applies to version: 4

This document is no longer available beyond version 4. Information can now be found here: Transmission Line Table for version 5

This documentation page references Altium NEXUS/NEXUS Client (part of the deployed NEXUS solution), which has been discontinued. All your PCB design, data management and collaboration needs can now be delivered by Altium Designer and a connected Altium 365 Workspace. Check out the FAQs page for more information.

 

Parent page: Draftsman Objects

A placed Transmission Line Table with a range of cell formatting.
A placed Transmission Line Table with a range of cell formatting.

Summary

A Draftsman Transmission Line Table is a table object that is populated with layer structure and calculated impedance data drawn from the Layer Stack Manager. Transmission Line impedance calculations that apply to all active Impedance Profiles are included in the table. The table's visual style is configurable in the Properties panel.

► See example

Availability

A Transmission Line Table is available for placement in a Draftsman document in the following ways:

  • Choose the Place » Transmission Line Table command from the main menu.
  • Click the Transmission Line Table entry () in the table objects drop-down menu on the Active Bar located at the top of the design space. Click and hold an Active Bar button to access other related commands. Once a command has been used, it will become the topmost item on that section of the Active Bar.
  • Right-click in the drawing design space then select Place » Transmission Line Table from the context menu.
  • Click the Transmission Line Table () entry in the tables drop-down menu () on the Drawing Annotations toolbar (click View » Toolbars » Drawing Annotations to enable).
The default settings for the Transmission Line Structure Table are available in the Draftsman - Defaults page of the Preferences dialog.

Placement

After launching the Transmission Line Table placement command a new table object, populated with Layer and Impedance data is drawn from the board Layer Stack, is attached to the cursor. Move the cursor to the desired position then click to confirm the placement.

To retrieve the current/latest data from the Layer Stack use the Tools » Update Board command.

Graphical Editing

The position of a placed Transmission Line Table may be graphically changed by selecting within the table object and then dragging it to a new location. Note that the table cannot be graphically resized, but will automatically scale to accommodate the font and column properties specified in the Properties panel.

Non-Graphical Editing

Properties page: Transmission Line Table Properties

The non-graphical method of editing a Transmission Line Table is available in the Draftsman Properties panel, which provides a range of editable properties and style settings for placed Draftsman objects.

The Properties panel when a Transmission Line Table is selected.
The Properties panel when a Transmission Line Table is selected.

To open the Properties panel and access the properties of a placed Transmission Line Table:

  • After selecting the Transmission Line Table object, select the Properties panel from the Panels button at the bottom right of the design space or select View » Panels » Properties from the main menus.
  • Double-click on the Transmission Line Table object in the design space.
  • Right-click on the Transmission Line Table then select Item Properties from the context menu.

If the Properties panel is already active, click on the Transmission Line Table object to access its properties in the panel.

The Transmission Line Table properties can be accessed prior to entering placement mode from the Draftsman - Defaults page of the Preferences dialog. This allows the default properties for the Transmission Line Table object to be changed, which will be applied when placing subsequent Transmission Line Tables.

Editing Multiple Objects

The Properties panel supports multiple object editing, where the property settings that are identical in all currently selected objects can be modified.

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