precautions while using cathode ray oscilloscope

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measurement of frequency

Precautions while using Cathode Ray Oscilloscope

The cathode-ray oscilloscope (CRO) is a common laboratory instrument that provides accurate time.
measurement of frequency

An unknown frequency source signal generator is connected to y plates of C.R.O . Time base signal is connected to x plates internally connected . We get a sinusoidal wave on the screen, after the adjustment of voltage sensitivity band switch Y plates and time base band switch X plates . The horizontal length l between two successive peaks is noted. When this horizontal length l is multiplied by the time base m i.e. sec div , we get the time period T .The reciprocal of the time period 1 T gives the frequency f . This can be verified with the frequency, measured by the multi meter.


Lichtenberg figures
Measurements of voltage
Cathode ray oscilloscope
Ensuring the cro is calibrated correctly
Cathode ray tube
Heat light and sound
Horizontal sweep section
Procedure
Phase measurement using lissajous patterns
Cro controls
Cro operation
Adjusting the trace position and appearance
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