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Phase measurement using lissajous patterns

Precautions while using Cathode Ray Oscilloscope

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Phase measurement using lissajous patterns

To Measure the phase difference of two sine waves their frequencies must be equal.
1. Connect a 1Volt peak peak, 1KHz sine wave signal from the function generator to the horizontal input of the CRO.
2. Connect the output of phase shift network to the vertical input as shown in figure.
3. Adjust the vertical and horizontal gains properly for good display.
4. Observe Lissajous Patterns for different combinations of R and C values.


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Precautions
Connecting the cro to the circuit
Multimeter
Switching the cro on
Phase measurement using lissajous patterns
Heat light and sound
Features and controls
Cathode ray oscilloscope
Measuring a simple signal
Cro controls
Measuring the input signal
Adjusting the trace position and appearance
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