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Acquiring and Displaying Waveforms
TDS 500C, TDS 600B, & TDS 700C User Manual
3–55
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Figure 3–27: Dual Zoom — Shown Dual Window (Preview) Mode
Using InstaVuT Acquisition Mode
The TDS 500C and 700C 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
section describes how to use InstaVu mode and how it differs from normal
acquisition mode.
Figure 3–29 illustrates how InstaVu acquisition mode differs from the normal
acquisition mode used by digital storage oscilloscopes. Note that normal mode
follows a “capture waveform–digitize waveform–update waveform memory–dis-
play waveform” cycle. Normal mode misses short term deviations occurring
during the long dead times. Typical waveform capture rates are 50 waveforms
per second.
Waveform Capture Rate