Q = 1

Q = 2

Q = 5

Q = 10

f

f

f

f

Amp

(dB)

f /fO

f /fO

f /fO

f /fO

f /fO

f /fO

f /fO

f /fO

-0.10 0.824 1.214

0.907 1.102

0.962 1.040

0.981 1.020

-0.25 0.783 1.277

0.884 1.131

0.952 1.051

0.976 1.025

-0.50 0.747 1.338

0.863 1.159

0.943 1.061

0.971 1.030

-1.00 0.705 1.418

0.837 1.194

0.931 1.074

0.965 1.036

-1.50 0.677 1.478

0.820 1.220

0.923 1.083

0.961 1.041

-2.00 0.654 1.529

0.805 1.242

0.916 1.091

0.957 1.045

-2.50 0.635 1.574

0.792 1.262

0.910 1.098

0.954 1.048

-3.00 0.618 1.617

0.781 1.280

0.905 1.105

0.951 1.051

-5.00 0.563 1.776

0.742 1.348

0.886 1.129

0.941 1.062

-10.00 0.457 2.189

0.657 1.523

0.842 1.188

0.917 1.090

-15.00 0.368 2.720

0.572 1.748

0.792 1.263

0.889 1.125

-20.00 0.290 3.445

0.485 2.062

0.733 1.364

0.855 1.170

-25.00 0.225 4.439

0.399 2.506

0.664 1.507

0.811 1.233

-30.00 0.173 5.795

0.319 3.130

0.585 1.709

0.758 1.320

-35.00 0.131 7.630

0.250 3.999

0.500 2.000

0.693 1.443

-40.00 0.099 10.09

0.193 5.192

0.414 2.414

0.618 1.618

-45.00 0.075 13.41

0.147 6.814

0.333 3.001

0.535 1.869

-50.00 0.056 17.83

0.111 9.002

0.262 3.819

0.449 2.228

-55.00 0.042 23.75

0.084 11.94

0.202 4.945

0.365 2.737

-60.00 0.032 31.65

0.063 15.87

0.154 6.479

0.290 3.453

-65.00 0.024 42.19

0.047 21.13

0.117 8.552

0.225 4.443

-70.00 0.018 56.25

0.036 28.15

0.088 11.33

0.172 5.798

-75.00 0.013 75.00

0.027 37.52

0.066 15.06

0.131 7.632

-80.00 0.010 100.0

0.020 50.01

0.050 20.05

0.099 10.10

Band-Pass

2-Pole Pair

Appendix A

1784 Chessie Lane, Ottawa, IL 61350 • Tel: 800/252-7074, 815/434-7800 • FAX: 815/434-8176

e-mail: sales@freqdev.com

Amplitude Response Curves

0.1

1.0

10.0

2

3 4 5 6 7 8

2

3 4 5 6 7 8

Normalized Frequency (f/fo)

-80

-70

-60

-50

-40

-30

-20

-10

0

Normalized Frequency (f/fo)

1.0

0.9

0.8

0.7

0.6

-5

-4

-3

-2

-1

0

1.1 1.2

1.4

1.3

1.5 1.6

Q1

Q2

Q5

Q10

Q1

Q2

Q5

Q10

39