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The waveform before amplification is shown in the square brackets on the upper part of the screen. It can
move by horizontal position or adjusting time base to increasing or decreasing this area.
Enlarged Waveform
The enlarged waveform is displayed on the bottom part of the screen, window extension improves
resolution relative to the main time base.
Note: Window extension requires that time base position should at 20 ms/div～2 ns/div. Only in this range,
window extension can be functioned.
6.4 XY
The waveform displayed in XY mode is also called Lissajous curve.
In XY mode, input CH1 signal on the horizontal axis(X axis), input CH2 signal on the vertical axis (Y axis).
In XY mode, when CH1 is activated, use POSITION knob in the vertical control area to move XY figure
on the horizontal direction. When CH2 is activated, use POSITION knob in the vertical control area to
move XY figure on the vertical direction.
Rotate the SCALE knob in the vertical control area to adjust amplitude scale of each channel, rotate the
SCALE knob in the horizontal control area to adjust the time base, which can get a better display effect
of Lissajous curve. Waveform in XY mode as shown in Figure 6-4.
Figure 6-4
Application of XY Mode
Phase difference between in two signals with the same frequency can be easily observed through
Lissajous curve. The following figure explains the observation schematic of the phase difference.
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