Time at Edge
The Oscilloscope mode and TDR/TDT mode Time at Edge is the measure of the time at which the specified waveform edge occurs on the displayed waveform. This measurement may be compatible with PAM4 signals, depending on the PAM4 waveform.
When this measurement is selected, a dialog appears from which you select the edge number, direction, threshold value, and if it is restricted to a measurement region. The measurement can be performed on any waveform that is displayed in one of a Waveform content windows.
PAM4 Compatibility in Oscilloscope mode. Because this measurement is based on waveform top and base levels and the passing of the waveform's edge through proximal, mesial, and distal thresholds, the measurement is not designed for PAM4 signals. However, the measurement may be able to be made on PAM4 signals if the waveform top and base definitions are manual set. This can be attempted using the Top-Base Definition tab of the Configure Measurements dialog.
This measurement may be compatible with PAM4 signals, depending on the PAM4 waveform. PAM measurement capability requires the Research and Developement or Manufacturing package license or the legacy PAM-N Analysis license.
Configurable Measurement Parameters
This measurement is affected by the following settings (click Measure > Configure Base Measurements):
- Top-Base Definition tab
- Thresholds tab
To measure
- Click the button and select the waveform edge number, threshold, and direction at which to perform the measurement.
- If measurement regions are enabled, select the area over which the measurement is to be performed: a Region or the Entire Display.
SCPI Command
:MEASure:OSCilloscope:TEDGe