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Evaluating Oscilloscope Sample
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2010-07-30
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Introduction
Digital storage oscilloscopes (DSO) are
the primary tool used today by digital
designers to perform signal integrity
measurements such as setup/hold
times, eye margin, and rise/fall times.
The two key banner specifications than
affect an oscilloscope’s signal integrity
measurement accuracy are bandwidth
and sample rate. Most engineers
have a good idea of how much
bandwidth they need for their digital
measurements. However, there is often
a lot confusion about required sample
rates — and engineers often assume
that scopes with the highest sample
rates produce the most accurate digital
measurements. But is this true?
Digital storage oscilloscopes (DSO) are
the primary tool used today by digital
designers to perform signal integrity
measurements such as setup/hold
times, eye margin, and rise/fall times.
The two key banner specifications than
affect an oscilloscope’s signal integrity
measurement accuracy are bandwidth
and sample rate. Most engineers
have a good idea of how much
bandwidth they need for their digital
measurements. However, there is often
a lot confusion about required sample
rates — and engineers often assume
that scopes with the highest sample
rates produce the most accurate digital
measurements. But is this true?
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