Port Properties dialog box
Selecting Modify => Port Properties opens the Port Properties dialog box which allows you to modify the number, type and impedance associated with the selected port(s). It also allows you to set reference planes or calibration lengths for auto-grounded ports as well as the properties for co-calibrated internal ports. This command is only enabled when at least one port is selected in your circuit.
If the selected port is part of a component, the Component Port Properties dialog box is opened.
Port Number: Renumber the port by entering a new value in the Port Number text box.
Type: Select the port type from a drop list consisting of Standard, Autognd and Co-calibrated. Additional controls are displayed in the dialog box when Autognd or Co-calibrated are selected as Port Type.
Impedance: Enter the four impedance values in the text entry boxes: Resistance (in ohms), Reactance (in ohms), Inductance (in nanohenries), and Capacitance (in picofarads). Note that all the co-calibrated ports in a Calibration group must have the same impedance.
Autognd Port Data: This section of the dialog box allows you to set a reference plane and calibration length for an autogrounded port by entering values in the text entry boxes or by using the mouse.
Calibration Group: This section of the dialog box appears when you select Co-calibrated as your port type. Use the name drop list to assign a co-calibrated port to a Calibration group. All existing calibration groups are listed along with a choice to set up a new calibration group. The group identifier appears on the port symbol in the project editor view.
To set up or change the properties for the selected calibration group, click on the Properties button in the Calibration Group section of the dialog box to open the Calibration Group Properties dialog box. When you open this dialog box an Assistant is displayed that will help you to with the properties for the calibration group.
Calibration Group Name:
The Group Name is a letter designation provided automatically by the project editor; it is not possible for you to use a custom name. If you wish to add the selected port to an existing group, select that group from the drop list. If you wish to create a new calibration group, select the first entry in the drop list which is always "New" followed by the name that will be used for the new group.
For a detailed explanation of ports and how they are modeled,
please refer to the ''Ports'' chapter in the Sonnet User's Guide.
NOTE: If multiple objects are selected which have different parameters, the entry ''Mixed'' appears in the pertinent text entry box. Changes made in the Properties dialog boxes will affect the parameters of all selected polygons or ports.
