Analog and Frequency Inputs | 12
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12.2.5 Digital filter details
C 80 uses A/D converter oversampling and digital filtering to recording rate.
Digital filters eliminate ‘out-of-band’ noise
Cut-off frequency automatically adjusted to recording rate
Example:
– 100 Hz recording rate (10 ms)
– <40 Hz pass band (>99 %)
– >50 Hz stop band (<1 %)
Linear phase – no signal distortion
0
500
1000
1500
2000
2500
3000
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
Abtastwerte (roh)
Wert
10000Hz Abtastrate
0
5
10
15
20
25
30
-1.5
-1
-0.5
0
0.5
1
1.5
Abtastwerte (gefiltert)
Wert
100Hz Abtastrate
0
5
10
15
20
25
30
-1.5
-1
-0.5
0
0.5
1
1.5
Abtastwerte (dezimiert)
Wert
100Hz Abtastrate
Sensor signal with noise
Recorded signal 100Hz
(unfiltered)
Recorded signal 100Hz
(filtered)
Latency compensation – no filter delay in recorded data
– Filtering is (smart) averaging over several samples
– Filtered signal is delayed with respect to real time signal
Summary of Contents for C 80
Page 1: ...Data Logger and Sensor Interface C 80 Manual Version 1 0 04 08 2021 ...
Page 11: ...Mechanical Drawing 5 Bosch Motorsport Manual_C_80 11 144 5 Mechanical Drawing ...
Page 30: ...8 First Steps 30 144 Manual_C_80 Bosch Motorsport ...
Page 141: ...Bosch Motorsport Manual_C_80 141 144 ...
Page 142: ...142 144 Manual_C_80 Bosch Motorsport ...
Page 143: ...Bosch Motorsport Manual_C_80 143 144 ...
Page 144: ...Bosch Engineering GmbH Motorsport Robert Bosch Allee 1 74232 Abstatt www bosch motorsport com ...