Campbell IRGASON Manuel télécharger pdf (Page 55)

Appendix A. Filter Bandwidth and Time Delay

110

Hertz

0.0001

0.001

0.01

0.1

No Units

EC100 10-Hz Bandwidth Filter

10-Hz Bandwidth from a 50-msec Moving Average

EC100 10-Hz Filter Compared to 20-msec Moving Average (Amplitude Responses)

FIGURE A-2. Frequency response comparison of the EC100 10 Hz

bandwidth and a 50 ms moving average

TABLE A-1. Filter Time Delays for Various Bandwidths

Bandwidth (Hz) Time Delay (ms)

5 800

10 400

12.5 320

20 200

25 160

A-3

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Campbell IRGASON Manuel Page 55