How Do I Use XY Time Mode?

How Do I Use XY Time Mode?

The XY time mode can be used to plot the voltage of one channel against the voltage of another channel. Complete the following steps to configure XY time mode.

1. Click the icon in the upper right corner of the MSO.
2. Select Time Mode > XY.
3. In the XY settings panel to the right of the graph, select two channels to use as XY sources.
4. Configure the Volts/Div settings of the XY sources using your scroll wheel on the graph or the Volts/Div controls on the channel configuration panes.
   • Panning vertically on the graph changes the Y axis source's vertical offset.
   • Panning horizontally on the graph changes the X axis source's vertical offset.
5. Use the Time/Div control above the graph to adjust the acquisition window size.

How Do I Use XY Time Mode to Measure the Phase Offset of Two Analog Channels?

1. Turn on and configure XY time mode to use one of the two input channels as its X source and the other as its Y source.
2. Confirm that the XY plot that appears on the graph is in the shape of an ellipse.
3. Click on the Cursor Settings icon below the graph and select Manual cursors.

4. Use the cursors to measure and record the total width of the XY plot as A.
5. Use the cursors to measure and record the distance between the XY plot’s two X intercepts as C.

If the top of the plotted ellipse is in the first quadrant, then the phase difference is:

   ±sin⁻¹(C/A)

If instead the top of the plotted ellipse is in the second quadrant, then the phase difference is:

  ±[180°−sin⁻¹(C/A)]