Other topics about Setting Up the Display of Measurement Results
When you are performing phase-based measurement, you can specify whether to use degrees or radian as the phase unit applied to the scaling and marker features.
Activate the trace for which you want to set the phase unit.
To set the phase unit, your parameter must be either |Z|-θ/|Y|-θ or complex parameter. In the latter case, polar format must be selected. You should activate Trace 2 in the former case, and the trace whose axis format is polar in the latter case.
Press the Format key to display the Format menu.
Press Phase Unit > Deg|Rad to select your desired phase unit.
The E4991B provides a feature that allows you to display phase values without wrapping them at +180° or -180°. This feature, called “expanded phase,” is useful when measured phase values are in a continuous increase or decrease and some of them exceed +180° or -180°. To set up the expanded phase feature, follow these steps:
Activate the trace for which you want to use the expanded phase feature.
To expand the phase, your parameter must be angular parameter.
Press the Format key to display the Format menu.
Press Expand Phase > ON|OFF to turn On or Off the expanded phase feature.