Sample time setting for high frequency systems
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What sample time should I use when simulating a system operating at 100 kHz?
It seems to me that the typical 0.2 seconds would be to small.
Are there quidelines for determining the appropriate sample time?
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Fangjun Jiang
on 15 Aug 2011
A 100kHz signal means its period is 10us. If the signal is a sine wave, you would need about 20 data points to represent a complete cycle of a sine wave with good quality. That means 0.5us is your maximum step size or sample time. 0.2 seconds is way bigger.
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Stephen
on 15 Aug 2011
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Fangjun Jiang
on 15 Aug 2011
Sure. The proper sample time should be determined by the need of the application. To measure the noise level and temperature of a living room, for example, could have quite different sample time.
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