An oscilloscope is a measurement and testing instrument thet measures AC waveforms with two-axis on screen :
1. Vertical Axis
Represent the voltage.
2. Horizontal Axis
Represent the time or phase angle.
The quantities can be shown on the screen of an oscilloscope :
1. Amplitude ( Peak value, Vp).
2. Peak-to-peak value (Vpp).
3. Period (T) and frequency (f).
Example :
From figure as shown below, shows a AC sine wave displayed on the screen of an oscilloscope. The voltage knob is set at 5 v/div. Calculate the Peak-to-peak value (Vpp).
Solution :
Givev:
The variable value (v/div) = 5v/div
The number of vertical division = 6.4 division.
Therefore, peak-to peak value (Vpp) :
Vpp
= 5v/div X 6.4div
= 32V
Vp = Vpp/2
=16V
