X20 system modules • Other functions • X20CM4810
X20 system User's Manual 3.10
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4.26.2.5.6.12 MaxFrequencyRaw01
This register defines the maximum channel frequency. Reducing the maximum frequency allows the frequency
resolution in the spectrum to be increased.
Bit
Description
15-12
Maximum frequency for channel 4. For possible values, see channel 1.
11-8
Maximum frequency for channel 3. For possible values, see channel 1.
7-4
Maximum frequency for channel 2. For possible values, see channel 1.
3-0
Maximum frequency for channel 1
Value
Description
15 - 6
Invalid
5
200 Hz
4
500 Hz
3
1000 Hz
2
2000 Hz
1
5000 Hz
0
10000 Hz
Table 753: MaxFrequencyRaw01
Maximum frequency
Sample frequency
Duration of measure-
ment
Frequency resolution in the frequency spectrum
10000 Hz
25781 Hz
0.3178 s
3.1471 Hz
5000 Hz
12891 Hz
0.6355 s
1.5736 Hz
2000 Hz
5156 Hz
1.5888 s
0.6294 Hz
1000 Hz
2578 Hz
3.1775 s
0.3147 Hz
500 Hz
1289 Hz
6.3550 s
0.1574 Hz
200 Hz
516 Hz
15.8875 s
0.0629 Hz
Table 754: Overview of the maximum frequency of the raw signal
Important information for configuring the maximum frequency
•
The frequency domain must be larger than the damage frequency. Otherwise, it must be kept as small as
possible in order to obtain a good resolution.
•
When using broad values (e.g. PeakRaw), only the largest peak value is returned during a measurement.
Using a longer measurement time at a lower frequency can lead to the measured value being overlooked
in some applications.
•
The maximum frequency influences the size of the sample frequency and can be configured using the
"Analog input" function.
4.26.2.5.6.13 MaxFrequencyRaw01Read
This register is used to read the configured maximum frequency for the raw signal of individual channels.