Oscilloscope Rise Time - Agilent Technologies 2000 X-Series User Manual

Figure 23
So, in practice, an oscilloscope's sample rate should be four or more times
its bandwidth: f
frequency components have a greater amount of attenuation.
See Also
Evaluating Oscilloscope Sample Rates vs. Sampling Fidelity: How to
Make the Most Accurate Digital Measurements, Agilent Application Note
1587

Oscilloscope Rise Time

Closely related to an oscilloscope's bandwidth specification is its rise time
specification. Oscilloscopes with a Gaussian- type frequency response have
an approximate rise time of 0.35/f
An oscilloscope's rise time is not the fastest edge speed that the
oscilloscope can accurately measure. It is the fastest edge speed the
oscilloscope can possibly produce.
Agilent InfiniiVision 2000 X-Series Oscilloscopes User's Guide
Limiting oscilloscope bandwidth (f
reduces frequency components above the Nyquist frequency (f
Sample Rate and Oscilloscope Bandwidth
= 4f
S BW
("http://cp.literature.agilent.com/litweb/pdf/5989-
) to 1/4 the sample rate (f
BW
. This way, there is less aliasing, and aliased
based on a 10% to 90% criterion.
BW
Acquisition Control
/4)
S
).
N
5732EN.pdf")
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