The shutter scanning operation can also be seen by observing some of the waveforms arising. Given an input signal, a waveform trigger is obtained to provide a signal scanning. The sweep starts at a time instant of the cycle of the input signal and ends within a period set by controls scanning. Therefore, the oscilloscope waits until the input reaches a similar point in its cycle before starting another scan. The duration of the scan will be seen determines how many cycles, while the shutter ensures that the synchronization is performed.
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