DIPLOMA IN ECE

1. MEASUREMENT OF AMPLITUDE,
FREQUENCY,TIME PERIOD (USING
CRO)
.

2. INTRODUCTION
 The cathode-ray oscilloscope (CRO) is a common
laboratory instrument that provides accurate time
and aplitude measurements of voltage signals over
a wide range of frequencies.

3. CATHODE RAY OSCILLOSCOPE
 .

4. MEASUREMENTS BY USING CRO
 Measurement of Amplitude
 Measurement of Frequency
 Measurement of Time Period

5. MEASUREMENT OF AMPLITUDE
 Measuring the peak value (amplitude), peak-to-peak value, and
frequency of an ac supply using an oscilloscope. Inside the
oscilloscope, an electron beam is fired at the screen.

6. MEASUREMENT OF FREQUENCY
 That frequency is measured in Hz (Hertz) and equals the number of
times the signal repeats itself in a time of one second (the cycles per
second). The period is the interval of time of one cycle in a repeating
occurrence, thus the period is the reciprocal of the frequency.

7. MEASUREMENT OF TIME PERIOD
 CRO displays the voltage signal as a function of
time on its screen. The Time period of that
periodic voltage signal is constant, but we can vary
the number of divisions that cover one complete
cycle of voltage signal in horizontal direction by
varying time/division knob on the CRO panel.

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 THANK YOU