High-Pass
4-Pole
Appendix A
Theoretical Transfer Characteristics
1
f/fc
Amp
Phase
Delay
(Hz)
(dB)
(deg)
(sec)
0.10
-80.0
345
.418
-55.9
0.20
330
.423
-41.8
0.30
314
.433
-31.8
0.40
299
.449
-24.1
0.50
282
.474
0.60
-17.8
264
.511
0.70
-12.6
245
.558
0.80
-8.43
224
.604
0.85
-6.69
213
.619
202
0.90
-5.22
.622
0.95
-3.99
191
.612
1.00
-3.01
180
.588
1.20
-0.908
143
.427
.289
1.40
-0.285
118
.204
1.60
-0.100
100
1.80
-0.039
87.6
.152
2.00
-0.017
78.0
.119
61.4
2.50
-0.003
.072
-0.001
50.7
3.00
.049
0.00
37.8
4.00
.027
5.00
0.00
30.1
.017
6.00
0.00
25.1
.012
7.00
0.00
21.4
.009
0.00
8.00
18.8
.007
0.00
9.00
16.7
.005
10.0
0.00
15.0
.004
Butterworth
Frequency Response
0
Amp (dB)
-20
-40
-60
-80
-100
0.1
2
1.0
2 3 4 5 6 7
10.0
Normalized Frequency(f/fc)
3 4 5 6 78
1.Normalized
Group Delay:
The above delay data is normalized to a corner frequency
of 1.0Hz.The actual delay is the normalized delay divided
by the actual corner frequency (fc).
Normalized Delay
Actual Delay =
Actual Corner Frequency (fc) in Hz
1784 Chessie Lane, Ottawa, IL 61350 • Tel: 800/252-7074, 815/434-7800 • FAX: 815/434-8176
e-mail: sales@freqdev.com Web Address: http://www.freqdev.com
27
FREQUENCYDEVICES [ FREQUENCY DEVICES, INC. ]
