High-Pass

2-Pole

Appendix A

Butterworth

6

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

(sec)

Normalized Frequency(f/fc)

Theoretical Transfer Characteristics

1

Frequency Response

0.10

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.85

0.90

0.95

1.00

1.20

1.40

1.60

1.80

2.00

2.50

3.00

4.00

5.00

6.00

7.00

8.00

9.00

10.0

-0.01

-0.00

-0.00

-0.00

-0.00

-0.00

-0.40

-0.26

-0.11

-0.05

-0.02

-3.48

-3.01

-1.71

-1.01

-0.62

-9.40

-7.13

-5.37

-4.65

-4.02

-40.00

-27.97

-20.95

-16.03

-12.31

172

164

155

146

137

127

117

108

103

98.5

94.2

90.0

75.5

64.1

55.4

48.7

43.3

34.0

27.9

20.7

16.4

13.6

11.7

10.2

9.04

8.13

.009

.006

.005

.004

.003

.002

.083

.066

.041

.027

.015

.236

.225

.179

.138

.106

.271

.270

.262

.255

.246

.227

.234

.243

.255

.265

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).

Actual Delay =

Normalized Delay

Actual Corner Frequency (fc) in Hz

f/fc

(Hz)

Amp

(dB)

Phase

(deg)

Delay

0.1

1.0

10.0

2

3 4 5 6 78

2

3 4 5 6 7

-80

-60

-40

-20

0