Xy Display

1. Obtain a baseline trace.

2. Use equal-length coaxial cables, or the two 10X probes supplied with the instrument, to apply the horizontal signal (X-axis) to the CH 1 OR X input connector and to apply the vertical signal (Y-axis) to the CH 2 OR Y input connector.

3. Select X-Y mode by switching the SEC/DIV switch to its fully counterclockwise position.

4. Advance the AUTO INTENSITY control setting until two dots are displayed. The display can be positioned horizontally with the Horizontal POSITION control and vertically with the Channel 2 POSITION control.


The display obtained when sinusoidal signals are applied to the X- and Y-axis is called a Lissajous figure. This display is commonly used to compare the frequency and phase relationships of two input signals. The frequency relationship of the two input signals determines the pattern seen. The pattern will be stable only if a common divisor exists between the two frequencies.

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