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Cursor Measurements
You can measure waveform data using cursors. Cursors are horizontal
and vertical markers that indicate X-axis values (usually time) and Y-axis
values (usually voltage) on a selected waveform source. The position of
the cursors can be moved turning the Entry knob. When you press the
Cursors key, it will illuminate and the cursors will turn on. To turn cursors
off, press this key again until it is not illuminated, or press the Quick Meas
key.
Cursors are not always limited to the visible display. If you set a cursor,
then pan and zoom the waveform until the cursor is off screen, its value
will not be changed, and if you pan the waveform back again it will have
the cursor in the original place.