Sealey TA4000 - Manual (Page 91)

91
The Application of the X-Y Operation
X-Y Plot acts to analyse a correlation of data between two channels. A diagram is
displayed on the screen when you use X-Y Plot, which enables you to compare frequencies,
amplitudes and phases of waveforms against the reference waveform. This makes it
possible to compare and analyze frequency, amplitude and phase between input and output.
Follow the steps below :
1. Set the probe attenuation to “ x10”. Set the switch to “x10” on the probes.
2. Connect the CH1 probe to the input of the circuit, and connect the CH2 probe to the
output of the circuit.
3 . Adjust the vertical scale and offset to display approximately the same amplitude
sig nals on each channel.
4 . Select X-Y format at the Horizontal window. The oscilloscope will displays a Lissajous pat-
tern representing the input and the output characteristics of the circuit.
5 . Adjust the scale and offset of the horizontal and vertical to a desirable waveform dis-
play. The following picture shows a typical example.
6 . Apply the Ellipse Method to observe the phase difference between the two channels.
Original Language Version TA4000 Issue: 1 - 06/09/11