Acquiring and Displaying Waveforms
3–44
TDS 500B, TDS 600B, & TDS 700A User Manual
requested value sets offset time to that value. You cannot set offset to less than
the minimum offset time available when using the general purpose knob.
Selected Graticule
Zoomed Waveform Edges
Zoom Boxes
Unzoomed Waveform
Figure 3–25: Dual Zoom — Shown Dual Window (Preview) Mode
NOTE. To make setting up Dual Zoom easier, turn on Preview in the side menu.
In this dual-window mode, the zoomed display appears in the top graticule,
while the lower graticule shows the two zoomed portions enclosed in two boxes
on the unzoomed waveform. Adjusting offset moves the right box relative to the
left box, which remains stationary. The associated zoomed waveform in the
upper graticule moves to track the offset changes. You can also adjust the
waveform relative to the zoom boxes by selecting the lower graticule and
adjusting the vertical and horizontal control knobs. See Using Dual Window
Mode on page 3–42.
Using InstaVu Acquisition Mode (TDS 500B and 700A Models Only)
The TDS 500B and 700A Oscilloscopes can use InstaVu acquisition mode to
reduce the dead time between waveform updates that normally occur when
digitizing storage oscilloscopes (DSOs) acquire waveforms. InstaVu mode can
capture and display transient deviations, such as glitches or runt pulses, often
missed during longer dead times that accompany normal DSO display. This
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