Dual Beam Oscilloscope Essay
Dual Beam Oscilloscope
In this lesson, the learner will be able to:
Define Dual Beam Oscilloscope
Explain the Multiple Beam Oscilloscope
Before heading into this topic, let us discuss the Electrocardiogramthat is (ECG) circuit, which is used with oscilloscopes .
An electrocardiogram or ECG (also known as EKG is an electrical recording of the heart and is used in the investigation of heart diseases).
The electrocardiogram or ECG / EKG is a surface measurement of the electrical potential generated by electrical activity in the cardiac tissue. Current flow is, in the form of ions, signals contraction of cardiac muscle fibres leading to the heart’s pumping action.
The ECG is a valuable, non–invasive diagnostic tool, which was first put to clinical use in 1913
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A DrDAQ data acquisition card was used to read out the output signal into a laptop, which effectively functions as a storage scope.
The graphs below show sample traces that were captured using Einthoven’s threelead ECG method:
Result of L1 and L2:
The amplifier takes the inputs from self-sticking electrodes that are attached to the body of the subject whose ECG is being taken.
It is important for the cables connecting the electrodes to the inputs of the circuit (shown as the blue, red and green circles in the diagram) to be (1) as short as possible and (2) well shielded.
The DrDAQADChas a dynamic range for voltages between 0 and 5 volts. This is not well matched to the ECG signal, which has both positive and negative–going pulses.
Now, we will learn about the Oscilloscope.
Next,we will move on to the discussion about the Oscilloscope.
Oscilloscope is a very important test instrument in electrical and electronics fields.
It is used to look at the shape of electrical signals by displaying a graph of voltage against time on its
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