Acquiring and Displaying Waveforms
3–42
TDS 500B, TDS 600B, & TDS 700A User Manual
To reset all zoom factors to their defaults, do the following step:
Press ZOOM ➞ Reset (main) ➞ Reset Live Factors or Reset All Factors
(side). Reset Live Factors resets only for live waveforms, as opposed to reference
waveforms; Reset All Factors resets for all waveforms.
The oscilloscope can display and control a waveform that is both zoomed and
unzoomed (magnified and unmagnified). To do so, it creates two 1/2 height
graticules, or windows, and displays the magnified waveform in the upper, and
the unmagnified waveform in the lower graticule. To use Dual Window Zoom
(also called zoom preview mode), do the following steps:
1. Press Zoom ➞ Mode (main) ➞ Preview (side). Note that the oscilloscope
displays the box-enclosed area on the waveform as magnified in the top
graticule. (See Figure 3–24.)
2. To scale or position the unmagnified waveform, press Selected Grati-
cule (main) ➞ Lower (side). Use the vertical and horizontal knobs to scale
and position the unmagnified waveform in the box.
Note that as you scale or move the unmagnified waveform relative to the
box, the oscilloscope alters the magnified display accordingly to include
only the waveform portion within the box.
3. To scale or position the magnified waveform, press Selected Grati-
cule (main) ➞ Upper (side). Use the vertical and horizontal knobs to scale
and position the magnified waveform.
Note that as you scale or move the magnified waveform, the oscilloscope
scales or moves the box relative to the unmagnified waveform, so the box
encloses only the waveform portion magnified in the upper graticule.
In Dual Window Zoom mode, the oscilloscope does not display the zoom
magnification factors; however, it does display the scale factors (volts/divi-
sion and time/division) for the zoomed waveform.
Reset Zoom
Using Dual Window Mode
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