Datasheet

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Press 〖Direction〗key and select Horizon. Press 〖Point〗key and set the horizontal
coordinate to be 410. Generator will horizontally zoom as the center of point. Press
〖Zoom〗and set the zoom ratio to be 200%. The waveform point (400, 4.000V) is
displayed. Continue to increase the zoom ratio to 500%, you will see the points
clearer:
(4) Vertical Zoom: Press 〖Point〗key and set the horizontal coordinate to be 260.
Generator will vertically zoom as the center of point. Press〖Zoom〗and set the zoom
ratio to be 500%. The waveform point (250, 550mV) is displayed.