Measuring Waveforms
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TDS 684A, TDS 744A, & TDS 784A User Manual
2. Using the general purpose knob, move the selected (the active) cursor. Press
SELECT to change which cursor is active.
Displaying the cursor menu and turning V Bar cursors off will not turn
gating off. (Gating arrows remain on screen to indicate the area over which
the measurement is gated.) You must turn gating off in the Gating side menu.
NOTE. Cursors are displayed relative to the selected waveform. If you are making a
measurement using two waveforms, this behavior can be a source of confusion. If
you turn off horizontal locking and adjust the horizontal position of one waveform
independent of the other, the cursors appear at the requested position with respect
to the selected waveform. Gated measurements remain accurate, but the displayed
positions of the cursors change when you change the selected waveform.
Figure 3–54: Measure Menu — Gating
The oscilloscope provides two settings, histogram and min-max, for specifying
how measure determines the High and Low levels of waveforms. To use the
high-low setup do the following step:
Press MEASURE ➞ High-Low Setup (main) ➞ Histogram or Min-Max
(side). If you select Min-Max, you may also want to check and/or revise values
using the Reference Levels main menu.
Define High-Low Setup
