position quickly.
VERTICAL SCALE: modify the vertical scale of the current channel. Turn
clockwise to decrease the scale and turn counterclockwise to increase. During the
modification, the amplitude of the waveform would enlarge or reduce and the scale
information (e.g. ) at the lower side of the screen would change
accordingly. Press down this knob to quickly switch the vertical scale adjustment
modes between “Coarse” and “Fine”.
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