:GRAPh:T:PERCent:X:UNITs

Command Syntax

:GRAPh:T:PERCentN:X:UNITs {SECond | METer}

Where N specifies one of four {1:4} waveform content windows.

Query Syntax

:GRAPh:T:PERCentN:X:UNITs?

Description

For the specified Time-% waveform content window, sets the X-axis units to be either time (seconds) or distance (meters). When meters are selected, you can accurately scale the X-axis distance for the velocity of propagation through the DUT path. This can be accomplished by entering either the DUT's Velocity Factor (:VFACtor sibling command) or Dielectric Constant (ε_r) (:DCONstant sibling command). Defining the X-axis in meters allows you to directly measure the cable and trace lengths or correlate the impedance of discontinuities with physical structures such as connectors and vias.

If you save a Time-% waveform to a file, the file's X-axis units will be the same as the displayed graph. When the file is recalled into a waveform memory, it can only be displayed in a Time-% graph that has the same X-axis units as defined in the file. The default setting is time (seconds).