Those are input signals A & B, External signal (Ext) and Line input. We can choose any one of these four signals as trigger input to the trigger circuit by using a switch. So, we can apply the two signals, namely A & B as input of channel A & Channel B respectively. There are two channels in Dual Beam Oscilloscope. The combination of the following blocks together is called a channel. Its block diagram is shown in below figure.Īs shown in above figure, the CRT of Dual Beam Oscilloscope consists of two sets of vertical deflection plates and one set of horizontal deflection plates. The Oscilloscope, which displays two voltage waveforms is called Dual Beam Oscilloscope. Now, let us discuss about these special purpose oscilloscopes one by one.
We will get special purpose oscilloscopes just by including few additional blocks to the basic oscilloscope based on the requirement.įollowing are the special purpose oscilloscopes.
In previous chapter, we had discussed about Cathode Ray Oscilloscope (CRO), which is a basic oscilloscope.
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