Specifies the speed of light in the port extension medium relative to speed of light in vacuum. Velocity Factor of 1 represents speed of light in vacuum. This property is used in conjuction with Port Extension Distance property to compute electrical delay. This value is unitless. This property is used only when you set the Port Extension Enabled property to True and Port Extension Delay Domain property to Distance.

Use "port::<portname>" as the selector string to configure or read this property for a specific VNA port. Use "port::all" to configure the same velocity factor for all VNA ports.

The default value is 1.

Remarks

The following table lists the characteristics of this property.

Short Name Port Extension Velocity Factor
Data type cdbl.png
Permissions Read/Write
High-level VIs N/A
Resettable Yes