Acquiring and Displaying Waveforms
TDS 684A, TDS 744A, & TDS 784A User Manual
3–39
5. Adjust the horizontal zoom factor using the horizontal SCALE knob. Adjust
the horizontal position of the zoomed waveform using the horizontal
POSITION knob.
Depending on the selection for Horizontal Lock in the side menu, Zoom
affects the displayed waveforms as follows:
None — only the waveform currently selected can be magnified and
positioned horizontally (Figure 3–23).
Live — all “live” (as opposed to reference) waveforms can be magnified and
positioned horizontally at the same time. If a reference or math waveform is
selected and Horizontal Lock set to Live, only the selected reference or math
waveform is magnified and positioned.
All — all waveforms displayed (live, math, and reference) can be magnified
and positioned horizontally at the same time.
Only the selected
waveform (the top one)
changes size.
Figure 3–23: Zoom Mode with Horizontal Lock Set to None
6. TDS 684A only: Press Horizontal Lock (side) to choose which waveforms
to zoom horizontally. Repeatedly press Horizontal Lock (side) to cycle
through the three choices.
TDS 700A models only: Press ZOOM ➞ Lock (main) ➞ All, Live, or
None (side).
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