YOKOGAWA DL750 - Page 711

App-38
IM 701210-06E
• IIR (Butterworth) Band-pass: Pass-band Width 2%
-80
-60
-40
-20
0
IIR (Butterworth) Band-pass Frequency Characteristics Pass-band Width 2%
30%
25%20%15%10%5%2%1.20%
0 f 0.1 f 0.2 f 0.3 f 0.4 f 0.5 f
dB
0
20
40
60
80
100
120
140
160
s/Ts
IIR (Butterworth) Band-pass Group Delay Characteristics (1) Pass-band Width 2%
1.20%
2%
0f 0.1 f 0.2 f 0.3 f 0.4 f 0.5 f
0
5
10
15
20
25
30
35
s/Ts
IIR (Butterworth) Band-pass Group Delay Characteristics (2) Pass-band Width 2%
5%
10% 15%
20%
25%
30%
0 f 0.1 f 0.2 f 0.3 f 0.4 f 0.5 f
(f: sampling frequency [Hz])
Appendix 6 DSP Channel Computation (Optional)