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Ex. 3: When the band pass filter is used under the following conditions
• To input a SIN wave, the frequency of analog inputs is changed from 100Hz to 400Hz, and 400Hz to
1000Hz.
• Sampling cycle: 80µs (Sampling frequency: 12.5Hz)
• Averaging process setting: Band pass filter
• Pass band edge frequency (Low): 320Hz
• Pass band edge frequency (High): 580Hz
• Attenuation band width: 200Hz
The response time is 16.72ms (= Sampling cycle (80µs) × Filter degree (209)).
[digit]
Input wave
0
0
[digit]
100Hz
Frequency that is
attenuated
400Hz
Frequency that
passes through
1000Hz
Frequency that is [Time]
attenuated
Response time
(16.72ms)
Wave after
digital filtering 0
0
88
[Time]