SIRIUSi-XHS®
TECHNICAL REFERENCE MANUAL
Image 16: Channel setup screen
2.3.3. Sample rate
One of the most important settings is the sample rate. The sample rate defines how many data points
SIRIUS will transfer to the Dewesoft. Higher sample rate also means that more data needs to be
transferred via USB to your computer.
The sampling speed mainly depends on your application. To display your signal in a time domain with a
good time resolution, you should sample 10 to 20 times faster than the frequency of the signal that you
want to measure, e.g. 1 kS/s for a 50 Hz sine-wave. If you have a lot of high frequency components, it may
be necessary to sample 100 times faster, e.g. 5 kS/s for the 50 Hz sine-wave, or even more. If you display
only the frequency domain (FFT analysis), a 2.5 times faster sampling would be sufficient (125 S/s for the
50 Hz sine-wave). The higher the sampling rate, the better the time resolution. But also the file size will
increase.
Image 17: Sample rate
SIRIUSi-XHS® - V21-2
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