![]() In this way, the vertical signal from channel A and horizontal signal from channel B is provided to the CRT for the operation of the oscilloscope. The signal from the horizontal amplifier is fed to the electronic switch by either sweep generator or channel B by switch S 0 and S 2. The circuit also has a trigger selector switch that permits the circuit triggering with either A or B channel input or with the externally applied signal. This switch only passes a single channel input particularly at a time to the vertical amplifier. The outputs of the two separate preamplifiers and attenuator stage are then provided to the electronic switch. As we can see in the above figure that it has two individual vertical input channels namely A and B.īoth the inputs are separately fed to the preamplifier and attenuator stage.
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