Using Features for Advanced Applications
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TDS 684A, TDS 744A, & TDS 784A User Manual
If you wish to see the zoom factor (2X, 5X, etc.) you need to turn Zoom on:
press ZOOM ā On (side). The vertical and horizontal zoom factors appear on
screen.
Whether Zoom is on or off, you can press Reset Zoom Factors (side) to return
the zoomed integral waveform to no magnification.