Measuring Waveforms
TDS 420A, TDS 430A, TDS 460A & TDS 510A User Manual
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2. Select the measurement to remove from the side menu. If you want to
remove all the measurements at one time, press All Measurements
(side).
The gating feature lets you limit measurements to the portion of the waveform
between cursors (the gated region). When gating is Off, the oscilloscope makes
measurements over the entire waveform record.
When gating is ON, vertical cursors are displayed. Use these cursors to define
the gated region. Do the following steps to gate a measurement:
1. Press MEASURE
➞ Gating (main) ➞ Gate with V Bar Cursors (side)
(see Figure 3–40).
2. Move the cursors to the area of the waveform of interest.
Displaying the cursor menu and turning V Bar cursors off does 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 can cause confusion. If you
turn off horizontal locking and adjust the horizontal position of one waveform,
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.
Gate Measurements
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