X20 system modules • Other functions • X20CM4810
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X20 system User's Manual 3.10
4.26.2.5.6.14 MinFrequencyEnvelope01
This register is used to configure the lowest frequency of the envelope signal still awaiting evaluation for the indi-
vidual channels.
This configuration only needs to be set for channels whose EnableVelocityCalculation bit has been set (configured
in the "SensorConfig01" register). Otherwise, the following minimum values based on the maximum frequency
("MaxFrequencyEnvelope") are used:
Maximum frequency
Frequency resolution in the frequency spectrum Minimum frequency
2000 Hz
0.6294 Hz
1.888 Hz
1000 Hz
0.3147 Hz
0.944 Hz
500 Hz
0.1574 Hz
0.472 Hz
200 Hz
0.0629 Hz
0.188 Hz
Table 755: Minimum MinFrequencyEnvelope based on MaxFrequencyEnvelope
If the EnableVelocityCalculation bit (configured in the "SensorConfig01" register) is set for the respective channel,
then the following configuration applies:
Bit
Description
15-12
Minimum frequency for channel 4. For possible values, see channel 1.
11-8
Minimum frequency for channel 3. For possible values, see channel 1.
7-4
Minimum frequency for channel 2. For possible values, see channel 1.
3-0
Minimum frequency for channel 1
Value
Description
15 - 5
Invalid
4
0.5 Hz
3
1 Hz
2
2 Hz
1
5 Hz
0
10 Hz
Table 756: MinFrequencyEnvelope01
Information:
If a channel's frequency is set lower than the minimum frequency, then the channel will be limited to
this lower frequency.
4.26.2.5.6.15 MinFrequencyEnvelope01Read
This register is used to read the lowest frequency of the envelope signal still awaiting evaluation for the individual
channels.
Bit
Description
15-12
Minimum frequency for channel 4. For possible values, see channel 1.
11-8
Minimum frequency for channel 3. For possible values, see channel 1.
7-4
Minimum frequency for channel 2. For possible values, see channel 1.
3-0
Minimum frequency for channel 1
Value
Description
15
Limited to minimum frequency
14 - 5
Invalid
4
0.5 Hz
3
1 Hz
2
2 Hz
1
5 Hz
0
10 Hz
Table 757: MinFrequencyEnvelope01
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