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Profi
Message
9.2.5.10
“Rotation speed”
The DSP determines (finds and counts) the number of signal periods in the time
signal. From this, the DSP determines the signal frequency (f = 1 / T) or rotation
speed (n = 60 * f). Edge and threshold values can be set.
This frequency measurement has upper and lower frequency limits – frequencies
outside this range cannot be clearly determined (i.e. have insufficient accuracy).
The following table provides an overview as an example:
Sample rate
fs
Number of samples
ns
Lower limit Upper limit
10240 Hz
2048
10 Hz
1024 Hz
2560 Hz
2048
22.5 Hz
256 Hz
512 Hz
2048
0,5 Hz
51 Hz
268
Delphin Technology AG
Dezember 2015
Profi
Message Manual
Summary of Contents for ProfiMessage
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Page 31: ...ProfiMessage 3 5 4 ADIT 31 Delphin Technology AG Dezember 2015 ProfiMessage Manual ...
Page 32: ...ProfiMessage 3 5 5 ADVT 3 5 6 AMDT 32 Delphin Technology AG Dezember 2015 ProfiMessage Manual ...
Page 33: ...ProfiMessage 3 5 7 DIOT 3 5 8 IOIT 33 Delphin Technology AG Dezember 2015 ProfiMessage Manual ...
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