Configure Switch Operation (IVI Switching Mode)

Path Tab

Because of issues like calibration, you may want to have deterministic control over the path the instrument creates between two channels. Use the Paths tab to specify the exact path, in terms of the Configuration channels used, to create.

The instrument creates a connection between the channels using Configuration channels. These intermediary steps are called the legs of the path. The format of the leg of the path is "ch1->conf1" , where the "ch1" and "conf1" are the two channels used to establish the connection between the first and the last channel. The path syntax is a comma-delimited list of path legs that obey the following rules:

• The second channel of a leg in the path must be the same as the first channel in the subsequent leg.
• Every channel in the path, other than the first and last channels, must be Configuration channel.

An example of a path is: "ch1->conf1,conf1->ch2" .

This string is not interchangeable because the names of switches within the switch module are not required to be interchangeable and depend on the internal architecture of the switch module.

The Path tab for the Configure Switch operation contains the following channel-specific option:

• Expression —The expression TestStand evaluates at run time to determine the path set.

The Path tab also contains a listbox with a list of paths. The display name in the listbox contains the end channel names from the specified paths. Use the Add and Remove buttons to add new paths and remove existing paths from the list.