:GRAPh:T:PERCent:X:VFACtor

Command Syntax

:GRAPh:T:PERCent{1:4}:X:VFACtor <velocity factor>

Where the <velocity factor> is a double ranging from 0.1 to 1.0.

Where the {1:4} specifier identifies one of four waveform content windows.

Query Syntax

:GRAPh:T:PERCent{1:4}:X:VFACtor?

Description

For the waveforms in the selected Time-% waveform content window, specifies the Velocity Factor of the DUT path. As shown in the following equation, Velocity Factor (VF) is a ratio of the propagation velocity through a DUT (V_P) to the speed of an RF signal in a vacuum. This enables accurate scaling of the graph's X-axis when distance (meters) is selected using the :UNITs sibling command. The default setting for the X-axis is time (seconds). If you know the Dielectric Constant (ε_r) for the DUT path, you can accomplish the same task using the :DCONstant command.