Figure 1-5 shows the same 489-ps pulse sampled at 4 GSa/s. You cannot tell
from the picture, but there are still ten acquisitions. Notice that the
oscilloscope now acquires enough data on each acquisition so that it can
more faithfully reconstruct the signal. Also notice that the statistics results
indicate that the measurements are much more repeatable.
Use the real-time sampling mode when:
•
The signal occurs once or infrequently.
•
The sample rate is four times or greater than the highest frequency
components (that you are interested in) in the signal.
Figure 1-5
How the Oscilloscope Works
Sampling Overview
1–14
To Next Page
Loading...
