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Using Linear Sweep Tooth Saw Vertical Show Entry




To view a sinusoidal signal, it is necessary to use a scanning signal in the horizontal channel, so that the signal applied to vertical channel may be seen on the face of the tube. The exposure resulting in a CRO is a linear horizontal scan and a vertical sinusoidal input in the channel. For one cycle of signal to be exposed, it is necessary that the frequencies of the signal and the linear sweep being synchronized. If there is any difference, the display appear to move (not synchronized), unless the frequency is a multiple of the scanning frequency sinusoidal. Reducing the frequency sweep, more cycles of sinusoidal signal can be observed. Moreover, an increased frequency reduces the scanning signal range which can be viewed. In this case, there is a zoom into a section of the waveform signal.

The numbers in each waveform permit associating the waveform displayed on the oscilloscope variation of the input signal voltage and the scanning during a cycle.



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