Acquiring Waveforms
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TDS5000 Series User Manual
H Interpolation (normal acquisition mode is used instead)
H Vectors in equivalent-time sampling mode (waveforms are displayed as dots
instead)
H Saving nonactive waveforms
H Math waveforms
H Measurements
Consider the mode you want to use to acquire data:
Automatic Selection. Fast Acquisitions automatically selects record length and
sample rate to optimize the displayed image by minimizing dead time. Fast
Acquisitions selects sample rates up to 1.25 GS/s and record lengths up to
1,000,000 points, and compresses them to 500 pixels to produce the maximum
display content.
Waveform Capture Rate. Figures 3--14 and 3--15 illustrate how Fast Acquisitions
mode differs from the normal acquisition mode used by digital storage oscillo-
scopes. Note that normal mode follows a “capture waveform-digitize waveform-
update waveform memory-display waveform” cycle. Normal mode misses events
occurring during the long dead times. Typical waveform capture rates are
50 waveforms per second.
Fast Acquisit ions display Normal DSO display
Figure 3- 14: Normal DSO and Fast Acquisitions displays
Using Fast Acquisitions
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