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Scaling and Positioning Waveforms
TDS 620A, 640A & 644A User Manual
2Ć25
You can use zoom to see more detail without changing the acquired signal.
When you press the ZOOM button, a portion of the waveform record can be
expanded or compressed on the display, but the record points stay the
same.
Zoom is very useful when you wish to temporarily expand a waveform to
inspect small feature(s) on that waveform. For example, you might use zoom
to temporarily expand the front corner of a pulse to inspect its aberrations.
Use zoom to expand it horizontally and vertically. After you are finished, you
can return to your original horizontal scale setting by pressing one menu
button. (The zoom feature is also handy if you have acquired a waveform
while using the fastest time per division and want to further expand the
waveform horizontally.)
Autoset lets you quickly obtain a stable waveform display. It automatically
adjusts a wide variety of settings including vertical and horizontal scaling.
Other settings affected include trigger coupling, type, position, slope, and
mode and display intensities. Autoset on page 3Ć8 describes in detail what
autoset does.
See Autoset, on page 3Ć8.
See Delayed Triggering, on page 3Ć20.
See Horizontal Control, on page 3Ć66.
See Vertical Control, on page 3Ć136.
See Zoom, on page 3Ć151.
Zoom
Autoset
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