Tektronix THS3014 4- Channel hand-held oscilloscope, Scope-Meter, hand-held THS3014 Guida Informativa
Codici prodotto
THS3014
To capture glitches you need speed!
Nyquist said that a signal must be sampled at least twice as fast as its highest
frequency component to accurately reconstruct it and avoid aliasing (showing
artefacts that are not actually there). Nyquist however is an absolute minimum
– it applies only to sine waves, and assumes a continuous signal. Glitches are
by definition not continuous, and sampling at only twice the rate of the highest
frequency component is usually not enough. Conclusion: A high sample rate
increases resolution, ensuring that you’ll see intermittent events.
frequency component to accurately reconstruct it and avoid aliasing (showing
artefacts that are not actually there). Nyquist however is an absolute minimum
– it applies only to sine waves, and assumes a continuous signal. Glitches are
by definition not continuous, and sampling at only twice the rate of the highest
frequency component is usually not enough. Conclusion: A high sample rate
increases resolution, ensuring that you’ll see intermittent events.
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12 THINGS TO CONSIDER WHEN CHOOSING AN OSCILLOSCOPE
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CONTENTS
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6 7 8 9 10 11 12 CONTACT
INTRO
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