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Figure a-2, Table a-1, Table a-1) – Campbell Scientific EC155 CO2 and H2O Closed-Path Gas Analyzer and EC100 Electronics with Optional CSAT3A 3D Sonic Anemometer User Manual

Page 57

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Appendix A. Filter Bandwidth and Time Delay

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

bandwidth and a 50-msec 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

1

10

70

Hertz

0.0001

0.001

0.01

0.1

1

10

N

o U

ni

ts

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)

A-3